} PROCEEDINGS OF The Academy of Natural Sciences OF PHILADELPHIA Volume LXV1II 1916 philadelphia : The Academy of Natural Sciences LOGAN SQUARE 1916 The Academy of Natural Sciences of Philadelphia. January 15, 1917. I hereby certify that printed copies of the Proceedings for 1916 were mailed as follows: — Pages 1-32 March 7, 1916. 33-64 March 15, 1916. 65-84 March 31, 1916. 85-196 May 9, 1916. 197-314 May 23, 1916. 315-378 June 21, 1916. 379-426 August 14, 1916. 427-474 August 30, 1916. 475-538 .' November 21, 1916. 539-602 December 7, 1916. 603-618 January 29, 1917. EDWARD J. NOLAN, Recording Secretary. PUBLICATION COMMITTEE: Henry Skinner, M.D., Sc.D., Witmer Stone, A.M., Sc.D., Henry A. Pilsbry, Sc.D., William J. Fox, Edward J. Nolan, M.D., Sc.D. The President, Samuel Gibson Dixon, M.D., LL.D., ex-oficio. EDITOR: Edward J. Nolan, M.D., Sc.D. ///'/£ < : o N T E N T S. For Announcements, Reports, etc., see General Index. PAGE Alexander, Charles P. New or little-known crane-flies from the United States and Canada: Tipulidse, Ptychop- teridae, Dipt era. Part 3 (Plates XXV-XXXI) 480 Banks, Nathan. Revision of Cayuga Lake spiders (Plates X, XI) 68 Barringer, Daniel M. A possible partial explanation of the visibility and brilliancy of comets. With an addendum by Elihu Thomson. 472 Berry, S. Stillman. Cephalopoda of the Kermadec Islands (Plates VI, VII, VIII, IX) 45 Cockerell, T. D. A. Some bees from Australia, Tasmania, and the New Hebrides 360 Colton, Harold, S. On some varieties of Thais lapillus in the Mount Desert region, a study of individual ecology 440 Crawley, Howard. The sexual evolution of Sarcocystis muris (Plates I, II, III, IV) 3 The zoological position of Sarcosporidia 379 Dall, William H. A new species of Onchidiopsis from Bering Sea 370 Daniels, L. E. See Henderson, Junius. Fowler, Henry W. Cold-blooded vertebrates from Costa Rica and the Canal Zone 389 Notes on fishes of the orders Haplomi and Mycrocyprini 415 Heath, Harold. The nervous system of Crepidula adunca and its developments ... 479 Hebard, Morgan. See Rehn, James A. G. Henderson, Junius, and L. E. Daniels. Hunting Mollusca in Utah and Idaho (Plates XV, XVI, XVII, XVIII) 315 Jacobs, Merkel H., Ph.D. Temperature and the activities of animals 85 IV CONTENTS. PAGE Pilsbry, Henry A. Notes on the anatomy of Oreohelix, with a catalogue of the species (Plates XIX, XX, XXI, XXII) 340 IIkiin. . I ames A. G., and Morgan Hebard. Studies in the Dermaptera and Orthoptera of the Coastal Plain and Piedmont Section of the southeastern United Stales (Plates XII, XIII, XIV) 87 Thomson, Elihu. See Barringer, D. M. Viereck, Henry L. New species of North American bees of the genus Andrena from west of the 100th Meridian contained in the collections of The Academy of Natural Sciences of Philadelphia 550 Wade, Bruce. New genera and species of Gastropoda from the Upper Cretaceous (Plates XXIII, XXIV) 455 PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES |OF PHILADELPHIA. 1916. January 18. The President, Samuel G. Dixon, M.D., LL.D., in the Chair. Thirty-six persons present. The death of Daniel Giraud Elliot, a member, December 22, 1915, was announced. The Publication Committee announced the presentation of papers under the following titles: "Revision of Cayuga Lake spiders," by Nathan Banks, December 2, 1915. "Studies in the Dermaptera and Orthoptera of the Coastal Plains and Piedmont Region of the southeastern United States," by James A. G. Rehn and Morgan Hebard, January 17. "Fossil birds' eggs," by Dr. R. W. Shufeldt, January 18. Prof. William P. Magie and Daniel Moreau Barringer made communications on the Meteor Crater of Arizona, illustrated by lantern slides. (No abstract.) The following were elected members: Walter Sonneberg. William S. Huntington. Samuel T. Bodine. David Wilbur Horn, Ph.D. The following was ordered to be printed: PROCEEDINGS OF THE ACADEMY OF [Jan., THE SEXUAL EVOLUTION OF SARCOCYSTIS MUEIS. BY HOWARD CRAWLEY. A number of years ago, at the University of Pennsylvania, an investigation of the early stages of the evolution of Sarcocystis maris in the intestinal cells of the mouse was undertaken. This investiga- tion was interrupted for several years, but was resumed at the laboratory of the Zoological Division of the Bureau of Animal Industry, Washington, D. C, and the first definite results obtained were outlined in a preliminary note published in 1914 (Crawley, 1914). In this note it was shown that following ingestion of the so-called spores of this parasite, penetration of the intestinal cells of the mouse was effected within about two hours. Once within the cells the spores rapidly underwent profound changes and after the lapse of about nine hours they had separated into two categories, which were interpreted to represent males and females. In the case of the supposed males, development took the form of a loss of most if not all of the cytoplasm, so that the parasite became reduced to a nucleus . which, however, was of considerably larger size than that of the original spore. Later, the chromatin of this nucleus became col- lected into a number of small rounded masses placed at the periphery. These masses, at first granular, later became solid and eventually transformed themselves into elongated, thread-like bodies, which were interpreted to be microgametes. This evolution was completed at the end of 18 hours. Meanwhile others of the original spores went through a wholly different course of development, which was not at the time considered in detail. It was evident, however, that these elements retained their cytoplasm and eventually transformed themselves into oval cells, with rather dense cytoplasm and a vesicular nucleus containing a large karyosome. These, which were interpreted to be females, also reached the end of their development within 18 hours. Finally, appearances suggesting fertilization were noted. At the time when this preliminary notice was prepared, my material for the later stages, from 12 to 18 hours, was abundant and the conclusions as published were based on the findings in a number of mice. On the other hand, for the early stages only three mice were 191(5.] NATURAL SCIENCES OF PHILADELPHIA. 3 available, these representing, respectively, the 2 to 2\ hour, the 3 to 3| hour, and the 3 and (5 hour stages, the last being a mouse given two infecting U'^U between which was an interval of 3 hours, and killed 3 hours after the second meal. It was therefore con- sidered desirable to obtain more material for these earlier stage-, and the results to be set forth herein are based upon the examination of a number of mice killed at periods of from one hour onward. Material and Methods. A list of the mice used, with appropriate explanatory matter, is placed at the end of the present section. During the entire course of the studies on sarcosporidiosis, every mouse obtained in whatsoever manner was given a number. In many cases these were trapped gray mice, or else white mice which had never been inoculated. Hence those used for the microscopical study of the evolution of the parasites in the cells represent but a portion of the entire series. It has been considered better, howTever, to retain the numbers origin- ally given, since no confusion can possibly arise from such a procedure. In the list appended the time in hours elapsing between the infect- ing meal and the death of the mouse has been placed immediately after the number of the mouse, since this is the most important datum. After this the fixing fluid is noted, and finally a statement with reference to the quantity of infectious material which the mouse ate is appended. The omission of these data in a number of cases indicates a failure to keep the record complete. The list as given includes"38 mice, and the conclusions as set forth herein are thus based on this number of experimental animals. It is desired to lay emphasis on this point on account of the possibility of confusion with other intestinal Protozoa, such as Coccidia. Erdmann (1914) endeavored to obtain mice in which the possi- bility of extraneous infection was excluded. The procedure was to raise mice from birth under as sterile conditions as possible. This, of course, is the ideal method, but, as Erdmann states, it is tedious and difficult. The other method is to use a large series of mice, which will presumably yield results that cannot be questioned. Thus, if, after feeding, parasites are found in the cells which are evidently Sarcocystis spores and if, as time passes, these intracellular elements undergo serial changes it would seem to be hypercritical to question their identity as stages in the evolution of Sarcocystis muris. For it would be necessary to assume that each experimental mouse harbored Coccidia in addition to the Sarcosporidia and that 4 PROCEEDINGS OF THE ACADEMY OF [Jan., in each and every case the Coccidia happened to be in precisely such a stage as to resemble the Sarcosporidia. The mathematical proba- bility of this taking place diminishes with the number of mice used and when this number is large becomes a vanishing quantity. Of course, since protozoan infections naturally tend to assume the epizootic form, if one or two mice from a given cage were found to be infected with Coccidia, the surmise would be warranted that many or all of the others were so infected. But in the case of the series upon which the present studies were based, the mice were obtained from various sources and from various places and in many cases had never been in contact. It is therefore believed that the results as stated are valid, so far as concerns the possibility of confusion with Coccidia. The mice selected for inoculation were deprived of food for 24 hours. This served a two-fold purpose. It rendered them more prone to eat the infectious material when given and it served to free the intestine of half-digested vegetable food, the presence of which interferes with sectioning. For the short periods, up to 18 hours or so, the mice were given a piece of infected muscle of what was regarded as an appropriate size. This was larger or smaller, according to the number of cysts it contained; and when these were abundant the portion given had a weight of the order of one-tenth of a gram. When the mouse is given its infecting meal, any one of several things may happen. Some mice positively refuse to touch the meat, while others merely play with it for a time and then abandon it. More usually, however, the mous£ feeds, and the customary method is for it to hold the food in its forepaws and nibble at it until it is all consumed. This procedure, however, may be inter- rupted by delays, but if the entire time required to finish the meal is short in comparison with that to elapse between feeding and death, the mouse may be used. Finally, in some cases the meal was bolted in the manner in which a dog feeds. At the end of the proper period the mouse was chloroformed, opened, and the alimentary canal removed. In nearly all cases it was placed in the killing fluid entire, being neither cut into pieces nor slit open. The intestine of a mouse has such thin walls that the fluids have no difficulty in penetrating, and this procedure does away with the rough handling necessary in slitting the intestine. It more- over retained the intestinal contents, an obvious advantage, and a comparison with slit intestines showed that the fixation was equally accurate. The only disadvantage was that at times the penetration- 1910.] NATURAL SCIENCES OF PHILADELPHIA. 5 of the fluids from the muscularis toward the epithelium resulted in the latter being torn loose from the underlying connective tissue. At least this phenomenon was not infrequently manifesl and is presumably to be credited to the direction of entrance of the fluids. Following fixation, each intestine was cut into piece- of a con- venient length for embedding in paraffin. In general, the small intestine was cut into 25 to 30 pieces which were numbered, as a rule, from the anterior to the posterior end. Thus, int. 1 of a given mouse indicated the piece immediately following the stomach, the highest or last number that piece immediately in front of the csecum. Sometimes, however, this process was reversed, the last piece of the intestine being designated as int. — 1; the next to the last, int. — 2, and so on, the negative sign's serving to distinguish such cases from the more usual procedure. This, as already noted, is applicable to the small intestine alone, the caecum and large intestine being given other designations. The procedure as outlined above was not, however, always followed. The fixing fluids used were: 1. Hermann's fluid, stronger formula. 2. Zenker's fluid. 3. Picro-acetic acid, made by reducing a saturated aqueous solution of picric acid to one-half strength with water, and adding 1 per cent, glacial acetic acid. 4. An alcoholic-corrosive-acetic mixture, designated in the text as A. C. A. The formula for this is as follows: Saturated aqueous solution of mercuric chloride 50 parts. Alcohol, 95 percent 50 parts. Glacial acetic acid '5 parts. Of these, Hermann's fluid and the picro-acetic mixture, the latter despite Lee's strictures, gave the most delicate fixation. Zenker's fluid is not to be recommended, since it leaves the tissues in poor condition for staining and is at best a mediocre fixative. The A. C. A. fluid, while scarcely so accurate as Hermann's fluid, is none the less a very good fixative. It is, moreover, very con- venient, since the tissues can be passed directly from it into alcohol, and it leaves the material in excellent condition for staining. The material was stained both in bulk and on the slide. While t here is a prejudice against the former method for delicate cytological work. Delafield's hematoxylin counterstained on the slide with alcoholic eosin or acid fuchsin dissolved in 95 per cent, alcohol, gives 6 PROCEEDINGS OF THE ACADEMY OF [Jan., results not far short of the best slide staining. The use of counter- stains in alcohol is a great time-saving device, since the preparation has but to be passed from xylol, to absolute alcohol, to 95 per cent, alcohol, to the stain and back again to be ready for the Canada bal- sam. Moreover, if acid fuchsin be used, one quick dip in the stain is sufficient. For slide staining, iron hsematoxylin, Wright's and Giemsa stains and thionin were used either with or without counterstains. The blood stains used alone are unsatisfactory, since only the blue ingre- dients seem to take hold of the tissues. Wright's stain, counter- stained with alcoholic eosin, however, gave very good results. The technique was as follows: The slide holding the sections was first treated as a blood smear and allowed to lie with the mixture of stain and water upon it for 10 to 15 minutes. It was then washed first in water and then in 95 per cent, alcohol until all of the pre- cipitated stain had dissolved. It was then stained with eosin dis- solved in absolute alcohol, next passed into clean absolute alcohol, and finally into xylol. Wright's stain comes out very rapidly in alcohol, but the whole procedure as above outlined can be completed in a very short time. Thionin preparations counterstained in either alcoholic eosin or acid fuchsin in alcohol were largely used and gave in some respects the best results. Preparations so stained display beautifully sharp and clear-cut pictures, and they are very good when it is a question of bringing out the chemical qualities of different parts of the para- sites. On the other hand, thionin fails to bring out certain granules in these Sarcosporidia which are perhaps significant, and slides stained in thionin are not permanent. Accordingly, most of the slides were stained with iron hsematoxylin. With material fixed in Hermann's fluid, a counterstain is not neces- sary, although it was often used. With the other fixatives a counterstain was necessary, and acid fuchsin was the one most generally employed. The list of mice used follows: Mouse 77 15 hours. 99 3 and 6 hours. 106 ... 9hours A. C. A Heavymeal. 120 . 10i and 17 hours Heavymeal. 121 10| and 17 hours Heavymeal. L25 2J hours Hermann's fluid. 128 3f hours Picro-acetic. 132 .... 8J hours Hermann's fluid Heavymeal. 133 9 hours Hermann's fluid Heavy meal. 145 llfhours Hermann's fluid Moderate meal. I'.UG.] NATURAL SCIENCES OF PHILADELPHIA. 'i 1 Mi Hi hours Hermann's fluid Moderate meal. 147 'J 1 hours Hermann's fluid Moderate meal. IIS IShours Hermann's fluid Moderate meal. ! I!) 24 hours Hermann's fluid Moderate meal. !.">() 24 hours Hermann's fluid Moderate meal. 152 18 hours. Hermann's fluid. 153 24hours Hermann's fluid Heavy meal. 1.">I 24 hours. 175 12'. hours Hermann's flui 17(1 i:».l hours Hermann's fluid. 177 14 -J- hours Hermann's fluid. 178 I."),1, hours Hermann's fluid. 179 16| hours Hermann's fluid/ 180 17'. hours Hermann's fluid. lsi ISA hours Hermann's fluid. 182 IShours Hermann's fluid. 246 1 hour A. C. A Lightmeal. 247 4 hours r..A. C. A Heavy meal. '_MS 2 hours A. C. A Moderate meal. •_'|o 3hours A. C. A Moderate meal. '-'.">(> ."> hours. A. C. A Heavymeal. •_'.")1 1 * hours A. C. A Very light meal. 252 2\ hours A. C. A Very light meal. 253 6hours A. C. A Heavy meal. •_'.")7 3 hours Hermann's fluid Moderate meal. 258 4 hours A. C. A Moderate meal. 261. 4 hours Hermann's fluid Heavymeal. 262 5 hours Hermann's fluid Moderate meal. Prior to taking up the description of the findings in the cells, it is desirable to call attention to a phenomenon first signalized by Erd- mann (1910). This is the exfoliation of the intestinal epithelium which appears to follow ingestion of the spores of Sarcocystis. The natural inference would be that this was due to the invasion and subsequent destruction of the cells by the parasites, and such was my original idea (Crawley, 1913). No doubt a certain amount of exfoliation is to be accounted for in this way, but other factors are involved. Thus Erdmann found that the ingestion of an extract of Sarcocystis cysts, from which the spores themselves had been removed, was followed by exfoliation, and data that I shall now give show that the exfoliation takes place before any extensive invasion of the cells. The intestines of a series of mice, all of which had been killed within 6 hours after feeding, were examined and the conditions presented by the epithelium in various parts of the intestine noted. The results of this examination are tabulated below. Where no exfoliation was demonstrable, the condition is indicated by the word "none." Where, however, it is in evidence it is designated as •-lie lit," "moderate," or "severe," according to its degree. 8 PROCEEDINGS OF THE ACADEMY OF [Jan., Mouse 246, 1-hour Stage. Int. 1 Exfoliation slight. 3 Exfoliation moderate. 5 Exfoliation none. 7 Exfoliation slight. 9 Exfoliation slight. 11 Exfoliation modern te. 13 Exfoliation severe. 15 Exfoliation severe. 17 Exfoliation slight. 19 Exfoliation none. 21 Exfoliation severe. 23 Exfoliation slight, 25 Exfoliation none. Mouse 251, 1§-hour Stage. Int. 1 Exfoliation none. 3 ". Exfoliation none. 7 Exfoliation none. 9 Exfoliation none. Mouse 248, 2-hour Stage. Int. 3 Exfoliation slight. 8 Exfoliation none. 9 Exfoliation none. 15 Exfoliation slight, 21 Exfoliation slight, 26 Exfoliation none. 27 Exfoliation none. 28 Exfoliation none. 30 Exfoliation very slight. 32 Exfoliation very slight, Mouse 249, 3-hour Stage. Int. 2 Exfoliation moderate. 6 Exfoliation none. 8 Exfoliation none. 10 Exfoliation none. 12 Exfoliation none. 17 Exf oliat ion moderate. 18 Exfoliation slight. 19 Exfoliation slight, 20 Exf oliat ion very slight . 22 Exf oliat ion none. 24 Exfoliation none. 29 Exfoliation slight, 30 Exfoliation none. 31 Exfoliation none. Mouse 261, 4-hour Stage. Int. — 1 Exf oliat ion none. — 3 Exfoliation slight, — 5 Exfoliation slight. Mouse 247, 4-hour Stage. Int. 12 Exfoliation none. 14 Exfoliation none. 19K).| NATURAL SCIENCES OF PHILADELPHIA. 9 16 Exfoliation slighl . Is Exfoliation slight. 19.. Exfolial ion slighl . 30 Exfoliation slight. 31 Exfolial ion very slighl . Mouse 262, 5 to 3-hour Stack. Int. — 1 Exfoliation none. — 2 Exfoliation slight. —3 Exfoliation slight. —4 Exfoliation severe. —5 '. Exfolial ion moderate. —6 Exfoliation mode rate. Mouse 250, 5-hour Stage. Int . 21 Exfoliation none. 22 Exfoliation none. 30 Exfoliation moderate. 31 Exfoliation moderate. 32 Exfoliation slight. 33 Exfoliation moderate. Mouse 253, 6-hour Stage. Int. 10 Exfoliation slight. 15 Exfoliation slight. 16 Exfoliation none. 19 Exfoliation questionable. 25 Exfoliation slight. 27 Exfoliation none. 28 Exf oliat ion none. 29 Exfoliation none. As already stated, as a result of the method of fixing the mouse intestine, the epithelial row was at times torn loose from the sub- epithelial connective tissue. It thus results that in some cases the material presented a decidedly battered appearance. While, how- ever, the epithelial row itself might thus be torn loose and more or less broken, the individual cells were not thereby injured and their appearance indicated an accurate fixation. On the other hand, it was frequently possible to see that the cells at the tips of the villi were abnormal, this abnormality expressing itself in a loss of staining capacity on the part of the cytoplasm and an obvious degeneracy of the nuclei. This degeneracy, at first affecting only the cells at the tips of the villi, passes into a condition in which these cells have disappeared, while those lying along the sides of the villi are affected. This condition, in its turn, passes into one 'in which the villi are represented merely by stumps of connective tissue, the epithelium being present only in the regions between the bases of the villi. Finally a stage is reached in which the intestine is wholly denuded of epithelium. In the lists given 10 PROCEEDINGS OF THE ACADEMY OF [Jan., the term "slight" defines those conditions in which epithelial degen- eration is just beginning to be manifest, and "moderate" conditions where the tips of the villi are seriously affected, and "severe" con- ditions where the destructive influence has gone further. The data given in the above lists seem to establish the fact that exfoliation of the epithelium is correlated with ingestion of the spores of Sarcosporidia, but they are not consistent amongst them- selves. Thus, mouse 248, a 2-hour stage, is not so badly affected as mouse 246, killed only one hour after feeding, whereas mouse 251, a H-hour stage, shows no exfoliation at all, although in this last case observations were confined to only a small part of the intestine. In the cases of Nos. 249 and 261, both 3-hour stages, and No. 247, 4-hour, exfoliation is not extensive, while No. 262, 5- to 3-hour, shows a considerable amount near the posterior end of the intestine, as does also No. 250, 5-hour. On the other hand, mouse 253, killed 6 hours after feeding, is but slightly affected. In view of the rather contradictory nature of the data, it is impossible to attempt any explanation of the modus operandi of loss of the epithelium. Erdmann suggested that the destruction of the epithelium was an adaptation having for its purpose the easier penetration of the spores into the tissues of the mouse. Presumably this destruction is correlated with ingestion of the parasites, but if it be of any value to host or parasite it seems more plausible to regard it as a defensive move on the part of the former. In their attack upon the mouse the parasites first invade the epithelial cells and this they do within the first two or three hours. Obviously, then, the destruction of this epithelium, either before or after penetration by the parasites can only work to their disadvantage. Hence, while it is possible to look upon this exfoliation as an adaptation on the part of the host, there seems no good reason for so doing. It is a matter of observation that exfoliation follows the ingestion of sarcosporidian cysts, but it is also a matter of observation that such ingestion is practically always followed by infection of the muscles. Hence, the exfoliation is obviously not protective. The matter is, however, one of minor importance and the data are merely given for what they are worth. Evolution of the Parasites in the Cells. . The account of the findings in the cells may appropriately be begun with mouse 246, killed one hour after feeding. As indicated in the table on p. 8, slides were prepared from the alternate pieces 1910.] NATURAL SCIENCES OF PHILADELPHIA. 1 1 of the intestine from one end to the other. The anterior portions, Nos. 1 to 11, were wholly negative, there being no spores cither in the lumen or in the cells. Beginning with int. 13, however, spores were present in the lumen, and they were seen in the cells in int. 19, 23, and 25. Their absence from int. 21 is to he credited to the severe exfoliation there present. From int. 13, where the spores were first seen in the lumen, there was a rapid increase in their numbers in each successive piece, and in the lumina of int. 23 and 25 they were present in enormous numbers. From this it is evident that it requires but one hour for the ingested spores to reach the extreme posterior end of the small intestine, and as shown both by this and other mice, apparently the great majority of them reach this situation very quickly. While they have also been found in the caecum in very early stages, they evidently do not pass from the small intestine into the caecum as readily as they pass along the small intestine itself. This is evidenced by the fact that in the earlier stages — up to 9 hours or thereabouts — the lasl two or three centimeters of the small intestine always harbor spores free in the lumen. There is thus brought about a state of affairs of some interest when the earlier stages of the evolution of the parasites is under consideration. It is evident that the spores pass along the small intestine very rapidly until the posterior end is reached. The length of time required for this stream of spores to pass a given point will obviously vary in the different mice. In those cases where, as a result of prolonged nibbling, the ingested meat reaches the stomach thoroughly comminuted, we may presume that its stay in the stomach is shortened and its movement along the small intestine more rapid. On the other hand, when the meal is swallowed in large pieces, the presumption is that it will remain in the stomach until it is softened and disintegrated, and in consequence its progress along the small intestine will be delayed. Nevertheless, digestion in mice of purely animal matter is rapid, and in general at the end of a few hours spores are scarce in the lumen of the upper and middle portions of the small intestine. If, as a pure guess, we may assume that the stream of spores requires one hour to pass a given point, then the spores within the cells in any particular part of the intestine (except the posterior end) will all have entered the cells within an hour of one another. On the other hand, as we have seen, great numbers of the spores reach the posterior part of the intestine within one hour, and remain there for several hours, as is shown by finding them in this 12 PROCEEDINGS OF THE ACADEMY OF [Jan., situation in 9-hour stages. During the whole of this time it cannot be questioned that individuals are constantly penetrating the cells. Therefore it seems reasonable to assume that within certain limits, the intracellular spores in a given section of the upper or middle parts of the intestine will be in somewhat the same developmental stage. On the contrary, in the posterior part of the intestine, the intracellular spores will represent a series in the development, covering the greater part of the period of time elapsing between feeding and the death of the mouse. Thus, in a 9-hour mouse, the parasites in the cells of this extreme posterior part of the intestine might represent forms which had been in the cells from only a few minutes up to seven or eight hours, and in Nos. 132 and 133 it was evident that this was the case. It further follows that in these posterior portions many more cells are parasitized than elsewhere, since there is here maintained for several hours a large supply of extracellular spores. Returning to the conditions as found in mouse 246, intracellular spores in small numbers were found in int. 19, 23, and 25. These, of course, represented the very earliest stages in the development and in the main were not to be distinguished from those in the lumen. In some cases, however, development had begun, thus demonstrating the extreme rapidity with which these parasites go through with their evolution. The mounted material of this mouse, however, was prepared with a view of getting a general survey of the conditions rather than for detailed cytologicaL study. Hence, no figures of the parasites as found here have been made. Mouse 251. — Mouse 251 was killed 1| hours after feeding. According to the observations made at the time of the infecting teed, it received "a very light meal," but when the stomach and intestine were prepared for study the findings suggested that whereas relatively the meal may have been very light, positively such a definition seemed scarcely appropriate. In the stomach, from which the epithelium had largely disappeared, there were abundant cysts of the parasite, many of which were more or less intact and contained the greater number of the spores. In int. 1, 3, 5, and 7 there were abundant spores in the lumen, and in int. 9 they were present both in the lumen and in the cells. Comparing the conditions found here with those in mouse 246, it is to be noted that in the latter the spores were further back toward the end of the intestine. In No. 246 the upper portions of the intestine were free of spores, whereas in 251 these same portions l'JIO.] NATURAL SCIENCES OF PHILADELPHIA. 13 contained them in considerable abundance. These differences are. as already suggested, probably to be accredited to differences in the manner in which the two mice led. Taking up now the evolution of the spores within the intestine of the mouse, we may advantageously use as a point of departure the -pore as it occurs free in the lumen, for it is evident that development lu 'gins here. Plate I, fig. 2, portrays such a spore and may be taken as the point of departure, although in all the early stages the spores in the lumen are identical with many of those in the cells. This particular case is from mouse 248, a 2-hour stage, but it is valid for any of the early stages. The characteristics of this stage are as follows: The contours of the cell are sharp and clear cut, and there is a distinct bounding line or periplast. The cytoplasm, while obviously alveolar, is dense and ordinarily stains well. Granules may or may not be present. The nucleus, which is conspicuous, is round and gives the appearance as though in life it were turgid with nuclear sap. There is a distinct nuclear membrane and a more or less distinct nuclear net is always present. With regard to its shape, the spore in the lumen may be a smooth oval, as, for examples, are the intracellular spores shown in Plate I, figs. 3 and 4, or it may have the sides more or less bulged out in the region of the nucleus. This latter phenomenon is due to the increase in size of the nucleus, a process initiated very shortly after the spore reaches the alimentary canal of the mouse. The appearance of the spores in the intestine, whether they be in the lumen or in the cells, offers a considerable contrast to that of spores removed from the cysts. . With regard to these latter, a description is herewith given, although they are familiar objects in the literature and have been described and figured a number of times. Such spores are shown in Plate I, fig. 1. As is here indicated, one end of the spore is broader, the other end narrower, and the nucleus lies nearer the narrow end. The internal structure is obscure. The nucleus is a clear-cut vesicle, and to all appearances is provided with a definitive mem- brane. Xo internal structure can be made out, and the staining reaction is feeble. In Giemsa preparation- it stains a pale reddish color. The cytoplasm with Giemsa stains a dense blue. Its structure can 14 PROCEEDINGS OF THE ACADEMY OF [Jan., scarcely be determined, but it may be inferred that it is alveolar. It is densest in the immediate vicinity of the nucleus. The broad end of the spore is frequently much less dense than elsewhere and at times shows a more or less well defined oval area. This appear- ance, however, is probably due merely to the fact that here the cytoplasm has a lower affinity for the stain than elsewhere. The same phenomenon is shown by the spores of Sarcocystis leporum (Crawley, 1914). In the case of the rabbit parasite, as I have endeavored to show, one end of the spore seems to be differen- tiated into a sort of rostrum, the cytoplasm of which does not stain as densely as does that of the balance of the spore. We are probably dealing with the same thing in the case of Sarcocystis muris, but in this parasite the differentiation of the rostrum is not so sharp. It may furthermore be suggested that it is this clearer region in the spore which has given rise to the belief, expressed by some authors, that the sarcosporidian spore possesses a polar capsule. Comparing the spores taken directly from a cyst with those in the intestine, the latter are broader, more oval bodies, and, although this is not shown by the figures, there has been a loss of the granules which are such a characteristic feature of the former. The most noteworthy change, however, concerns the nucleus, which has become larger, apparently much more turgid, and begins to show a nuclear net. It is thus evident that evolution begins as soon as the spore reaches the intestine of the mouse, and apparently the most important step is a great increase in activity of the nucleus. This evolution, however, does not appear to be carried far unless the spore gains a resting place within a cell of the host. The cells invaded are the cylinder cells. At least this is so in the vast majority of cases. Now and then, however, parasites are to be found in mucous cells, but since the presence of a parasite in a cell may result in mucoid degeneration, it is difficult to diagnose such instances. The parasite may have invaded a mucous cell or it may have caused mucoid degeneration of a cylinder cell. This question, however, appears to be of no great importance. It is also well to emphasize the point that the spore is a naked mass of protoplasm and that the only differentiation displayed by the cytoplasm is the peripheral condensation into a periplastic layer. Statements to the effect that the spore opens and releases an amcebula are wholly without warrant, and polar filaments, either coiled up within one end of the cell or discharged, do not exist. Claims of 1916.] NATURAL SCIENCES OF PHILADELPHIA. L5 this sort, which have appeared in the literature from time to time, seem to be due to an unfortunate desire to correlate the Sarcospo- ridia with the Myxosporidia. These two groups may of course be closely related, bu1 as yet there is no conclusive evidence on hand to show that they are. Plate I. figs. 3 and 1 show spores in the cells of int. 9 of mouse 2.51, a l|-hour stage. It is to be noted that each of these lies in a vacuole. Probably they have not been in the cells for more than an hour. In both of them the cytoplasm is dense, compact, and deeply staining. In both of them, also, the nucleus has enlarged and is separated from the periplast only by very narrow strips of cytoplasm. There is, however, a difference in the nature of the net in these two nuclei. In the case of fig. 3, the meshes in the centre are solidly filled with chromatin, whereas in that of fig. 4 the chromatin is divided into separate masses. In all of these early stages the chromatin has a low affinity for stains, and, following the rule which seems to hold generally true in Protozoa, takes the acid rather than the basic -i a ins. On this account it results that these nuclei are rather difficult microscopical objects, and seen with powers of less than 1,000 diame- ters, a nucleus like that of fig. 3 looks like a vesicle containing only a central granule. But with a magnification of 1,500 to 2,000, and an intense artificial light, the structure as shown in the figure is brought out. As will be shown later, fig. 3 represents the more primitive condition, in which the chromatin is concentrated into a single mass, within which, however, the meshes of the nuclear net can be traced. In the case of fig. 4, the chromatin occurs in separate masses and the central meshes of the net are largely clear. Nuclei precisely like either of these may be seen in spores in the lumen. Mouse 24S. — Mouse 248 was killed two hours after feeding. Its intestine was cut into 32 pieces, int. 32 representing the extreme posterior portion. Observations were made on int. 3, 9, 15, 21, 27, and 32. In the upper portions there were scattered spores in the lumen and occasional specimens in the cells, but, following the general rule, parasitization was not extensive until the more posterior parts were reached. Plate I, fig. 5, from int. 27, shows a parasite lying in the usual vacuole close to the free edge of the epithelium. The cytoplasm is dense, while the nucleus shows very distinctly a nuclear net supporting scattered chromatin granules. The nucleus, in this case, lies near one end of the cell. Fig. 6, from int. 30, also represents what is clearly a very early stage. The cytoplasm is dense and compact. 16 PROCEEDINGS OF THE ACADEMY OF [Jan., the cell contours are sharp and a periplast can be seen. The nucleus, however, shows merely as a faintly stained vacuole containing some formed substance, the details of which could not be made out. It may here be remarked that in most of the cell parasites the nucleus appears as a vesicle containing a nuclear net, and that in general this nuclear net is the only part of the nucleus that stains. Hence the net appears as though projected against a clear background. On the other hand, it is frequently to be observed in the spores free in the lumen, and much less frequently in those in the cells, that the nuclear sap as well as the nuclear net has taken the stain, thus obscuring the details of the latter. This condition is illustrated by %. 6. In the preliminary note it was stated that at least a portion of the intracellular spores rapidly underwent a change which expressed itself in a reduction of the cytoplasm and an increase in the size of the nucleus, the ultimate result of which was the production of a body which was apparently only the enlarged original nucleus, the cytoplasm having apparently all disappeared. This, it was stated, was interpreted to be the male form. This evolution is illustrated in Plate I, figs. 7 to 11. Fig. 7 shows the nuclear enlargement with no great amount of cytoplasmic reduction. The nucleus is large and turgid, it causes the sides of the parasite to bulge and shows a distinct net. This net consists of a central aggre- gation from which strands run to the periphery. As already indicated in the discussion of figs. 3 and 4, whereas the appearance of this central aggregation differs considerably in the different specimens, its structure appears to be fundamentally the same throughout. It seems to lie merely the close-meshed central part of the nuclear net, with the interspaces sometimes empty and sometimes filled in with faintly staining chromatin. The latter is the more primitive condition. The parasite shown in fig. 7 was from int. 15, or about the middle of the intestine, and hence is presumably that of a parasite which has been within the cell for some little time. Except, however, for the notable enlargement of the nucleus, it has all the characteristics of a very early stage. Fig. 8, from int. 30, represents a condition in which there has been as yet no great amount of nuclear enlargement, but a slight degree of cytoplasmic degeneration. In fig. 9 there is shown nuclear enlarge- ment accompanied by a consiclerable degree of cytoplasmic degenera- tion, as is evidenced by the vacuolization and rough contours of the 1916.] NATURAL SCIENCES OF PHILADELPHIA. 17 cell. In fig. 10 the nucleus projects out from the sides of the cell, while the cytoplasm is reduced and shows uneven contours. In fig. 11 there is seen both nuclear enlargement and cytoplasmic reduction. The initial steps in the evolution of the male element are illustrated by the figures just described. The details of this evolution vary greatly, and it is doubtless true that this variation in detail is the result not only of variations in the actual biological process itself, but is also dependent on the technique. Thus, in iron hsematoxylin preparations there are always associated with the nucleus one or more intensely black granules which are either not visible at all or only faintly visible in Delaficld or thionin preparations. Furthermore, in material stained in thionin the cytoplasm is frequently seen to be separated into two portions, as shown in Plate I, figs. 12, 13, and 14. Here the cytoplasm is broken up into a number of lumps or streaks either lying embedded in a faintly staining ground substance (figs. 12 and 14) or apparently lying free in the vacuole which the parasite always produces in the mouse cell (fig. 13). It is evident that one of these conditions is readily derivable from the other. Thus, in figs. 12 and 14, the cytoplasm has separated into a chromophil substance lying within an almost achromatic substance. This latter gradually di-appears, producing the condition shown in fig. 13. A high affinity for chromatin stains is characteristic of the by- products of protoplasm, and is especially well brought out by thionin. Thus, in material so stained, both degenerate nuclei and mucus are deeply stained. In the former case we are dealing with a patho- logical, in the latter with a physiological process, but in both with protoplasmic by-products. In the case of these Sarcosporidia, the great increase in the size of the nucleus seems to predicate a supply of pabulum, and the suggestion is at least permissible that this pabulum is supplied by the cytoplasm. If this were so, the presump- tion would be that the densely staining flecks, as noted in figs. 12, 13, and 14, represent the cytoplasmic debris remaining after the nucleus has robbed the cytoplasm of a part of its substance. It is of course to be understood that the above is put forth merely as a possibility, the matter being one scarcely open to a rigid demon- stration. Mouse 125. — As noted in the list given on p. 6, this mouse repre- sents the conditions from 2 to 2| hours after feeding. These are in all essentials the same as those of mouse 248, as is evidenced by figs. 15, 16, and 17. In the case of fig. 17, Plate II, it is to be noted that 2 18 PROCEEDINGS OF THE ACADEMY OF [Jan., the cytoplasm is greatly reduced in quantity and is vacuolated, while in all three the nucleus is enlarged and shows the usual nuclear net. Mouse 249. — This animal was killed three hours after feeding. Its intestine was cut into 31 pieces numbered from 1 to 31. Observa- tions were made upon the stomach and upon int. 2, 6, 8, 10, 12, 18, 20, 22, 30, and 31. The stomach and the first five pieces of the intestine examined were negative. In int. 18 spores were present in the lumen; in int. 20, 22, 30, and 31 they were found both in the lumen and in the cells. It has already been shown (p. 11) that in some of the mice the spores move along the intestine very rapidly, yet it is always to be remembered that the failure to find them in a few selected slides is not proof of their absence from the particular portions of the intestine from which these slides were made. In this mouse it seems unlikely that so much of the intestine was actually negative. It is in mouse 249 that the differentiation into males and females first begins to be noticeable. In the case of the males, in which the characteristic changes consist of a great enlargement of the nucleus and a reduction of the cytoplasm, there is no confusion, since these changes are conspicuous and readily detected. Thus, Plate II, figs. 18, 19, and 20 are all obviously males, since they all show nuclear enlargement and cytoplasmic reduction. A particularly good earmark of the males is the fact that the nucleus is not sur- rounded by cytoplasm, the parasites consisting (fig. 18) of an enlarged nucleus provided with two tongue- or cap-shaped masses of cyto- plasm. The 'conspicuous black granule, mentioned above as appearing in iron hematoxylin stains, is to be seen in fig. 20, whereas fig. 19 shows a stage wherein the cytoplasm is nearly gone and the nucleus has reached a size equal to that of many of the entire para- sites. On the other hand, the differences between the female and the original spore are by no means so striking. The female is relatively shorter and broader, while the nucleus is sometimes larger and, as a rule, shows the chromatin concentrated into a single large karyosome. There is, however, no loss of cytoplasm. Moreover, with an exception to be noted below, the female undergoes no such conspicuous changes in the course of its evolution as does the male. In consequence, in these early stages it is always difficult and some- times impossible to say whether a given parasite is a female or merely one which has been in the cell a short time. Hence, it is only with much reserve that fig. 21 , Plate II, may be pro- 191G.] NATURAL SCIENCES OF PHILADELPHIA. 19 nounced that of a female. It possesses, however, the rather densely staining cytoplasm characteristic for the females and the nucleus is too small for a male. The deeply staining granules present in iron hematoxylin material are here in evidence. Fig. 22 probably also represents a female since it is a smoothly oval cell with dense cytoplasm, and the nucleus, while large, does not cause any protrusion of the sides of the cell. The radiate nuclear structure in this parasite is peculiar for such an early stage, and may represent a very precocious case of maturation (see p. 30). Mouse 126. — This mouse was given the flesh of an infected animal at a stated time and required one-half an hour to complete its meal. It was killed three hours later and in consequence1 represents the conditions 3 to 3h hours after inoculation. Figs. 23 and 24, Plate II, .ii-e from this mouse and show early male stages, as evidenced by the enlarged nuclei and the scanty quantity of cytoplasm present. Mouse 261. — Mouse 261 was given a piece of infected muscle at 10 A.M. (Feb. 15, 1915). It began to eat at once and consumed a considerable quantity of the infected material, but did not then complete the meal. At 2 P.M. the mouse was chloroformed, the infected muscle having been eaten in the interim. Hence, it repre- sents the conditions from 4 hours down to some shorter period. The only portions of the intestine examined in this case were int. --1 to int. — 5, or the last five pieces. The intestine of this mouse was slit open prior to fixation and in consequence the spores in the lumen were lost. Since the study here was confined to the last few centimeters of the intestine, a given intracellular spore might have been in its place anywhere from a few minutes to three hours or more, and hence it is impossible to pick out the early female stages with any degree of certainty. Thus, fig. 25 might be either that of an early female stage or of a parasite which had been in the cell for only a short time. It is perhaps the same with fig. 26 which represents a form difficult to classify satisfactorily. On the other hand, fig. 27 is an evident early male, and both this and fig. 26 are of interest in showing very clearly the nuclear structure. In a few cases, in mouse 261, males were found in which the lo- ot cytoplasm was complete1. MouS( '.',7. — This mouse was killed four hours after feeding. It- intestine was cut into 34 pieces, from int. 1 to 34, and observations were made on int. 12, 14, 16, 19, 30, and 33. The differentiation into males and females is here carried ;i little 20 PROCEEDINGS OF THE ACADEMY OF [Jan., further, although it is still difficult to get forms that can positively be diagnosed as females. An evident female, however, is shown in fig. 28, Plate II. This is taken to be a female on account of its shape, its retention of the cytoplasm, and the character of its nucleus. This latter element, as is shown by the figure, is vesicular, with a sharply defined nuclear membrane and a central mass of chromatin from which strands radiate to the periphery. Fig. 29 shows another female. This figure is diagram- matic, but is essentially like fig. 28. Both of these figures were obtained from int. 14 of the mouse; that is, from the anterior half of the intestine, and hence the presumption is that both of the parasites drawn had been in the cells for some considerable time. Fig. 30, from int. 19, may also be that of a female, although here the diagnosis is more doubtful, since the form rather suggests a parasite which has been in the cell for only a short time. In addition to the females, characteristic early males were seen in the cells of this mouse. Mouse 250. — This mouse was killed five hours after feeding. Its intestine was cut into 34 pieces, numbered from 1 to 34, and observa- tions were made on int. 21, 22, and 32. In this mouse it is much easier to distinguish between the males and females, since the two lines of development have become well separated. Thus, figs. 31 and 32, Plate II, represent males which have reached what might be termed the nuclear stage; that is, the stage in which the cytoplasm has nearly or quite disappeared. Thus, in fig. 31, the cytoplasm has all disappeared except for a cap of degenerate-looking material at one end of the nucleus. The nucleus itself shows the usual net, associated with which are several black granules. Centrally there is an irregular mass of acidophil chromatin in which lies a large black granule. This probably represents the karyosome. Fig. 32 also represents a male. There is here to be seen a well- defined net of rather broad strands and a number of black granules. The meshes of the net are in some places filled with faintly staining material. A karyosome does not appear to be present, although the large black granule may perhaps represent it. The crescent of staining substance at one end of the nucleus may represent the remnant of the spore cytoplasm, but more probably is a crescent of host tissue which not infrequently forms at the end of the vacuole in which the parasite normally lies. Its actual detachment from the parasite suggests it is the latter, and if this be so the cytoplasm of 191f>.| NATURAL SCIENCES OF PHILADELPHIA. 21 the parasite lias wholly disappeared and the vacuole in which the nucleus lies is the vacuole originally formed by the parasite. Fig. 33, Plate II. represents a parasite from the same slide and same section of the intestine as figs. 31 and32. It is clearly a female. The entire parasite is sharply outlined, and the cytoplasm is dense, although showing several vacuole-. The nucleus is clear cut and contains a large, rather faintly staining karyosome, together with two black granules. * me of these granules lies within the karyosome. the other appears to be in the space between the karyosome and membrane, but it is possible that it actually lay upon the membrane itself. In this particular case, strands connecting the karyosome with the nuclear membrane could not be detected. Fig. 34 was also obtained from the same slide as figs. 31, 32, and 33, but not from the same section. The parasite was clearly outlined. The cytoplasm, while not suggesting degeneration, was not homo- geneous, but appeared to consist of a matrix in which were a number of poorly defined denser areas. This is an appearance frequently to be noted in the early female stages, but it has not been possible to work out its significance. The nucleus of this parasite was clear cut and contained a large, faintly staining karyosome. Little strands radiated from the karyosome, but these could not be traced to the nuclear membrane. Two black granules were present, one within or upon the karyosome, the other on the nuclear membrane. The four parasites here figured and described typify conditions as found in mouse 250. They appear to furnish satisfactory evidence that the spores, after their invasion of the cells, separate into two groups, the later evolution of which indicates that they are to be regarded as males and females. This evolution, moreover, proceeds at such a rate that at the end of five hours at least a considerable number of the parasites can be separated into males and females. It is also believed that the cases herewith considered are the more convincing in that they were all taken from exactly the same place in the intestine. This was the twenty-second piece of an intestine cut into 34 pieces and therefore only two-thirds the way from the anterior end. This permits of the presumption that these four parasites had all entered the cells at somewhat the same time, and that this was perhaps four hours prior to the death of the mouse. It is of course to be understood that in the whole intestine up to 6 hours, and in its extreme posterior portions up to 9 hours, the parasites are in general in all sorts of conditions and that only a portion are differentiated into males and females. Furthermore, 22 PROCEEDINGS OF THE ACADEMY OF [Jan., it is to be understood that the figures are, as is usual in such cases, more or less diagrammatic, since it is impossible to reproduce the exact appearances as found under the microscope. Mouse 253. — This mouse was killed 6 hours after feeding and its intestine cut into 29 pieces, numbered from 1 to 29. Observations were made on int. 15, 19, 25, 27, and 29. The conditions here are, of course, very much like those of mouse 250, the cells showing evident males and females along with a number of others which had not evolved far enough to permit of their being determined. Characteristic females are shown in figs. 35, 36, and, Plate III, 37. A male is shown in fig. 38, which was taken from int. 16. This, while differing somewhat from figs. 31 and 32, is nevertheless obviously a male, since the cytoplasm has wholly disappeared and the parasite consists of nothing more than the enlarged nucleus of the original spore. Mouse 99. — This mouse was given two infective feeds separated by an interval of 3 hours and killed 3 hours after the second. It therefore represents the conditions at both 3 and 6 hours after inoculation and it is usually possible, in the case of any given parasite, to say to which of the two inoculations it belongs. Thus, fig. 39 is obviously that of a male and no doubt belongs to the 6-hour stage. The Later Stages. The Male. — The early stages of the evolution of S. muris have, as far as possible, been traced step by step as they occurred in mice killed from 1 to 6 hours after inoculation. At the outset the spores are apparently all alike, although it is possible that the dimorphism may be in evidence even for the spores in the cysts, as appears to be the case for the spores of Sarcocystis colli (Fantham, 1913). But whether this be so or not, by the end of 6 hours at least a considerable proportion of the parasites present are clearly separated into two categories. For the later stages it is more convenient to follow these two lines of development separately, instead of considering what is found at the end of increasingly longer periods of time. For after the first eight or ten hours the time factor ceases to be of value, and both 9- and 18-hour mice, for instance, may show identical stages of evolution. The development of the male will first be considered. As we have already seen, in the first few hours the male parasites lose most if not all of their cytoplasm and become reduced to an element which is obviously only the enlarged nucleus of the original 1916.] NATURAL SCIENCES OF PHILADELPHIA. 23 spore. Eventually the chromatin of'these elements collects into a number of small aggregates which arrange themselves around the periphery of the parasite and transform themselves into what are evidently the microgametes. It may be assumed that the evolution of the male element, or niicrogametocyte, proceeds in an orderly manner, and hence it should be possible to obtain an orderly series from some such stage as that of fig. 31 (Plate II) to that of fig. 75 (Plate V). It is not, however, possible to give all of the steps of this evolution. The parasites are themselves small, ranging around 8." in diameter and in consequence the details of their structure require the highest powers of the microscope. There is not a great deal of staining material within them, and the picture is confused by the fact that they lie embedded within the cells of the mouse in sectioned material. It is believed that in order to work out this evolution with precision it would be necessary to develop a technique which would permit of obtaining the parasites isolated, an end which could be gained either by cultural methods or by devising some means of getting the para- sites out of the cells in which they had developed. The few attempts which have been'made along these lines have as yet not met with any success. It is therefore to be understood that the details of the evolution of the niicrogametocyte as here set forth are presented with some reserve. Taking up now this development of the male from the stage found in the 5- and 6-hour mice to that found at the end of 18 hours, the earlier phases of it are illustrated by figs. 40 to 53 (Plate III). As it happens, most of these are from mice 106 and 120, both of which gave especially favorable material. What is seen here, however, is confirmed by the findings in other mice of the same periods. Evidently what is found in the 2- to 6-hour mice will represent conditions earlier than those found in mice killed 9 hours or more after feeding, and in these former the nuclear net is coarse and has a low affinity for chromatin stains (see figures of these stages). It is a matter of common knowledge that the chemical nature of chromatin varies with the physiological condition of the nucleus and that this is manifested by a varying staining reaction. Thus, in the so-called resting nuclei the chromatin has a relatively low percentage of nucleic acid, and this is indicated by a relatively low affinity for chromatin stains. On the other hand, as the nucleus prepares to divide, the percentage of nucleic acid increases, and as this takes place the chromatin displays a greater and greater affinity for chroma- tin stains. The percentage of nucleic acid is greatest at the time 24 PROCEEDINGS OF THE ACADEMY OF [Jan., when the chromatin is divided into chromosomes, and this is also the time when it stains most intensely. In the case of Protozoa, the resting, or better the trophic, nucleus takes the plasma rather than the chromatin stains, a fact which may be ascribed to an extremely low content in nucleic acid at such times rather than to a fundamental difference between the chemistry of protozoan and metazoan nuclei. But when in division, the protozoan nucleus stains as does that of the Metazoa, and this same staining reaction is also displayed by certain of the products of this division, such as microgametes. It is therefore permissible to suppose that in these early male forms of Sarcocystis muris, the coarseness of the threads of the nuclear net is due to the fact that the achromatic filaments are bearing a quantity of chromatin poor in nucleic acid. Besides being distributed along the achromatic filaments and upon the inner surface of the nuclear membrane, the chromatin may also occur in lumps, in masses which fill up the meshes of the net, and there is apparently normally present a larger mass or karyosome. In the course of several hours, however, this type of nucleus trans- forms itself into a body such as is shown in figs. 66 and 67 (Plate IV) . This is an oval element containing some achromatic stringy substance and showing around the periphery a series of granular clusters. The granules composing these clusters are extremely minute, but intensely chromophil, staining as do the chromosomes of a dividing metazoan cell. In spite of their minute size they are readily resolved. We thus start with a nucleus having a considerable bulk of chro- matin which has a low affinity for chromatin stains. Morpho- logically, this chromatin occurs as granules, irregular masses and bands, borne either by the nuclear net or upon the inner surface of the nuclear membrane. There is also usually present a central mass or karyosome. After several hours, however, the chromatin has diminished in bulk, has an intense affinity for chromatin stains, and is placed around the periphery in the form of clusters of minute granules. The conspicuous changes then consist in the taking on of a high affinity for basic stains, subdivision into minute granules and migration to the periphery. The desire is to show the several steps in this transformation. The earlier conditions are shown by figs. 31, 32, 38, and 39. Figs. 31 and 32 are from mouse 250, a 5-hour stage; fig. 38 from mouse 253 (6 hours), and fig. 39 from mouse 99 and presumably represents the 6-hour stage. These four figures show very distinctly the 1916.] NATURAL SCIENCES OF PHILADELPHIA. 25 variations with regard to what is interpreted to be the karyosome. In fig. 32 it is either absent or represented by the large black granule. In fig. 31 the irregular central mass provided with a Mack grannie presumably represents this element. In fig. 38 it is a large irregular body, while in fig. 39 it is a large oval deeply staining granule, splil nearly into two by a cleft. To some extent these differences are due to the technique employed, but in the main they represent actual differences in the morphology of the parasite itself. Passing now to mouse 106, a 9-hour stage which yielded highly fav< >r- able material, we have figs. 40and41 (Plate III). Fig. 41 is very much like fig. 39, except for the staining reaction of the karyosome. Fig. 40 bears a general resemblance to figs. 31, 32, and 38. It is therefore apparent that figs. 40 and 41 represent the earlier of the stages present in mouse 106 and hence the starting point from which a number of these have arisen. For the parasites in a 9-hour mouse may have been in the cells anywhere from a very short time up to perhaps 8 hours. Hence, in passing from mouse 99, 250, or 253 to mouse 106, it is not necessary and would, indeed, be a mistake to assume that we had also passed over 3 or 4 hours of time spent in development. The period elapsing between the inoculation and death of the mouse, at least as far as concerns the periods up to 9 or 10 hours, is of value only as a high limit. A parasite of mouse 253 cannot be more than 6 hours old; one of mouse 106 cannot be more than 9 hours, and this is all that can be stated with absolute cer- tainty. Nevertheless, the parasites of mouse 106 will in general be older than those of mouse 253, even though they will in a number of cases represent the same stages of development. It is therefore permissible to use parasites such as are shown in figs. 31, 32, 38, and 39, as well as figs. 40 and 41, in tracing the later stages as found in mouse 106. It is easy to pick out conditions readily derivable from these. Thus, fig. 42 (upper cell) is a good deal like fig. 41. Fig. 43 is also very much like fig. 41, except for the strip of basophil chromatin which runs across the nucleus. Fig. 44 also displays a general resemblance to the earlier stages, but has developed a greater quan- tity of basophil chromatin present in the form of scattered granules. A similar state of affairs is seen in fig. 45, in which the somewhat quadrangular mass of acidophil chromatin situated in the centre may represent the karyosome. In figs. 46 and 47, we have parasites in which the chromatin is all basophil and occurs in a rather finely divided state. In the case of the two parasites shown in fig. 42. 26 PROCEEDINGS OF THE ACADEMY OF [Jan., while they are not wholly unlike morphologically, the chromatin of the one is acidophil, of the other basophil, and the fact that they lie side by side seems to preclude ascribing this difference to irregular action of the stain. It is to be observed that all of the changes noted above point toward the production of finely divided and highly basophil chromatin. As pointed out above, in the early stages, a karyosome may or may not be present. When it is present, its evolution appears to take place as follows) In figs. 31, 38, 40, 44, and 48 the karyosome is composed of acidophil chromatin, associated with which are one or more basophil granules. A karyosome of the type shown in figs. 40 and 48, consisting of a rounded acidophil mass bearing several sharply basophil granules, was quite common. In fig. 47 there is a ring of basophil granules, and figs. 46 and 49 show somewhat similar phenomena. We seem here to be dealing with the conversion of the karyosome from an acidophil mass into a group of basophil granules. Resuming the account of the evolution of the entire parasite, fig. 53, from mouse 120, shows two parasites lying side by side. In the upper one the central body appears to represent the karyosome, here partly basophil and partly acidophil. In addition to this, the organism contains some acidophil material of irregular form together with a number of basophil granules, some of which are placed at the periphery. The lower parasite shows a central basophil mass and a number of basophil granules extending out from it. These para- sites, from int. 8 of mouse 120, should represent later rather than earlier conditions, and they can be derived from, what is shown in figs. 45, 47, and 48. The lower of the two, also, is very much like fig. 49. It is always to be kept in mind that we are endeavoring to trace the development of a structure showing a typical nuclear net, and displaying both acidophil and basophil chromatin throughout its entire extent to one in which all the chromatin present is intensely basophil and occurs as clusters of minute granules around the periph- ery of the parasite. Biological processes never proceed with mathe- matical precision, and hence we cannot look to find these three processes taking place side by side. But it is entirely reasonable to assume that if we compare any two parasites and find one of them more advanced with reference to one or more of these three con- ditions that it represents the later stage. Thus the lower parasite of fig. 42 is older than the upper, and the same thing may be said of lt> 16.] NATURAL SCIENCES OF PHILADELPHIA. 27 fig. 53. Figs. 46, 47. and 49 represent later stages than figs. 40, 44, and 45. On the other hand, in figs. 44 and 48, while the chromatin is in part in the form of small basophil granules, the balance of it is acidophil. Hence, it would not be possible to say whether these represent older or younger stages than the lower parasite of fig. 42 Again, as between figs. 49 and 53, upper parasite, the chromatin, of the former is all basophil, while that of the latter is showing a greater disposition to assemble at the periphery. The cases last given illustrate the irregularity with which the evolution proceeds. Fig. 54 (Plate IV) is from mouse 120. It shows a parasite with an irregular central mass from which prolongations run toward the pe- riphery. The staining reaction is partly basophil and partly acidophil . The basophil substance is partly in the form of granules and partly occurs as streaks and bands, but it is not improbable that these latter are composed of closely compacted granules, as is evidently the case, for instance, in the large aggregation of fig. 49. The central mass as shown in fig. 54 could have been derived from a karyo- some of the type shown in fig. 44. Finally, in addition to the central mass shown here (fig. 54), there are four more or less well-defined clusters of chromatin granules, in two of which the granules are very minute. The conditions shown in fig. 54 appear to be followed by those shown in figs.. 55 and 56. In these latter there is a central mass sending out prolongations toward the periphery, but the chromatin is more completely basophil and more completely separated into granules. There is also the same tendency, at least in fig. 55, for the granules to be disposed in clusters. In these two parasites (figs. 55 and 56) there is very little achromatic material remaining, and this is in part only the fragments of the linin network. The parasite shown in fig. 57 appears also to belong to this stage of the evolution. The development is carried further in the organisms shown in figs. 58 and-59. In these the arrangement of the chromatin granules into aggregates is more obvious. A comparison of figs. 54 and 55 with fig. 59 suggests that at least in some cases the modus operandi is for the chromatin to assume the form of a very irregular dendritic mass which later breaks up into smaller masses. Thus, in fig. 59 six of these small masses have already become individualized, and one more seems about to become free. In fig. 58, although the granules are very small, only three such masses have become independent. 28 PROCEEDINGS OF THE ACADEMY OF [Jail., The parasites shown in figs. 63 and 64 may belong in the above cycle. Although the central mass of fig. 64 is larger than that of fig. 54, its arrangement is not wholly different. Fig. 63, however, cannot very well be placed. Figs. 60 and 61, from mouse 179, give slightly later stages than figs. 58 and 59. At least the central dendritic mass has disappeared and the chromatin is distributed throughout the entire nucleus, either in clusters or as separate granules. Furthermore, there is a marked disposition for the clusters to assume a peripheral position, especially well marked in fig. 61. The smaller size of the granular clusters in figs. 60 and 61 than in figs. 58 and 59 suggests that in these last the clusters are destined to subdivide before reaching a peripheral position, a suggestion supported by what is seen in figs. 62, 65, 66, and 67. In figs. 60 and 61 all of the chromatin which could be seen by raising and lowering the focus was drawn, and hence some of the chromatin apparently central was actually peripheral. In fig. 62, only an optical section of the parasite is drawn. Here evolution has reached the stage where all of the chromatin is in the form of minute granules assembled in clusters that lie around the periphery. It is to be noted, however, that they are irregularly placed. The next stage is shown in fig. 66, where the clusters have come to lie in regular order around the periphery. Fig. 65 no doubt represents the same stage, but apparently shows only a part of the organism. In fig. 67 the clusters, which are the future microgametes or their nuclei, have begun to solidify. The further steps in this process are shown in figs. 68, 69, and 70, the last showing that the nuclei finally become rounded solid balls of highly basophil chromatin. Fig. 71 shows a condition intermediate between figs. 69 and 70. Fig. 52 (Plate III) shows a parasite in which the chromatin is present in the form of solid balls more or less strung together. The form and solidity of the chromatin masses suggest the later stages such as are pictured in figs. 70 and 71, whereas their arrangement as well as the elongated oval form of the parasite recalls earlier conditions. At times, however, the parasite reaches the end of its development while still retaining this oval form (fig. 74, Plate V). The final stages of the evolution of the microgametocyte are given in figs. 72 to 76 (Plate V). In fig. 72 the solid rounded elements are seen to be elongating, and this elongation is carried further in the case of fig. 73. Figs. 74 to 76 portray the microgametes. They always lie on the periphery, and fig. 76 gives the aspect as viewed in optical 1916.] NATURAL SCIENCES OF PHILADELPHIA. 29 section, whereas in the other two figures more than an optical section is shown. Figs. 75 and 7ti are the more typical; in fig. 71 the para- site is unusually small for this stage, but is characteristic in showing very clearly the arrangement of the microgametes around the periphery. The fully evolved male element or microgametocyte is a rounded or oval body, showing a stringy or amorphous residual mass and a -tries of microgametes disposed around the periphery. These latter are bodies about 2 to 2.5 microns long, broader at one end than the other and apparently composed wholly of intensely basophil chro- matin. This is at least their appearance in sectioned material, it is not impossible that in life, or in material otherwise prepared, they may show more than is here evident. Analogy would lead us to suspect the existence of flagella. This stage is apparently of short duration. Mouse 152, killed 18 hours after feeding, was heavily parasitized, but the exact stage shown in fig. 75 was comparatively scarce. This, however, is much as might be expected. The presumption is that the microgametes are motile elements, and once they 'are fully ripe they doubtless quickly abandon the situation in which they evolved, and without them the residuum would scarcely be recognizable. In number they varj-, following the counts made, from 13 to 17. Allowing both for an actual- variation and for the practical difficulties in making an accurate determination, the supposition is plausible that the typical number is sixteen. It is a familiar biological phenomenon that in those cases where the number of elements ultimately produced is some power of two, we are dealing with the results of the repeated division of some one original element. In this case, however, the end appears to lie attained in a less regular manner. In the description of the later stages of the e\rolution of the male element, reference was confined to the conditions as found in mice 106, 120, 152, and 179, respectively, 9, 10| and 17, 18 and 16| hour-. The first three of these gave particularly favorable material, all of them being heavily parasitized and none showing much destruction of the cells. The conditions seen here, however, were duplicated in other mice. Thus, Nos. 113, 132, and 133, all either Sh- or 9-hour periods, showed many of the same stages as were seen in mouse 106, while the later stages in the evolution of the microgametes were seen in mice 121, 175, 177, 178, 180, and 182, representing periods ranging from 10| to 18 hours. 30 PROCEEDINGS OF THE ACADEMY OF [Jan., The Female. — It has already been shown that the female, in the 5- and 6-hour mice, is an oval cell with rather compact cytoplasm and a vesicular nucleus with a large central body, the karyosome. It is illustrated in figs. 33 to 37. The nuclear structure is com- paratively simple and is portrayed well enough by the figures. The nuclear membrane is usually clear cut, and there is always present a large karyosome which takes the acid rather than the basic stain. The karyosome frequently has associated with it one or more sharply basophil granules, and may or may not show strands extending out toward the nuclear membrane. It is difficult, however, to show the cytoplasm as it actually occurs, and in the main this has been done in the figures in a purely conven- tional maimer. Its fundamental structure appears to be alveolar with the alveoles quite small and frequently tending to be variable in size. The picture, however, is greatly confused by the fact that in general both spongioplasm and hyaloplasm stain with much the same degree of intensity and both have a rather high affinity for plasma stains. Figs. 35, 77, 78, and 81 are attempts to show the conditions as they actually occur. In fig. 35 (Plate II) the alveolar structure is evident, although somewhat obscured, while it is seen much more clearly in fig. 81 (Plate V) . Parasites in which the alveolar , structure was as obvious as in fig. 81 could be found, but they were rare. Figs. 34, 77, and 78 show the cytoplasm to consist of an aggrega- tion of poorly defined rounded bodies lying in a paler matrix. This was a frequent appearance. The black granules seen in some of the figures represent the black granules usually to be seen in material stained with iron hematoxylin. Frequently,' also, the cytoplasm is vacuolated. The general appearance here described does not undergo any great change. Thus, figs. 28 (mouse 247) and 79 (mouse 113), respectively 4- and 9-hour stages, are much alike, as are figs. 77 and 78, respect- ively, from 6- and 9-hour mice. There is, however, one phenomenon presented which appears to he of interest. One phase of this is shown in figs. 81 and 82. In each of these the nucleus presents somewhat the appearance of a wheel. There is in each case a central acidophil karyosome which si mis out strands to the periphery. Around the periphery are a number of basophil granules. This condition was not at all infrequent and appeared to be especially characteristic of the intermediate periods of 9 or 10 hours. It was, however, seen in mouse 77, a 15-hour stage. We also have the condition illustrated in fig. 83, where there is some basophil material outside of the nucleus. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 31 The appearances suggest maturation, a suggestion which is strengthened by what is seen in figs. 84 to 87. In these the nucleus is the typical vesicle with its central karyosome, while the cytoplasm is more or less liberally provided with sharply staining granules. It seems permissible to suppose that we are here dealing with later stages in which the rejected chromatin has passed out into the cyto- plasm. Here it is apparently absorbed, since the fully mature macrogamete shows no indications of it. This phase of the life history of S. muris is protrayed by figs. 88 to 91, from mice 120, 145, and 152. The second of these was killed 11 \ hours after inoculation, and hence the macrogamete may reach the end of its development within this period of time. Fertilization. The earlier stages of the parasite are passed while within a cylinder cell of the intestinal epithelium in its proper place in the epithelial row. The parasite, however, has a deleterious influence on the cell it invades and apparently always destroys it in the end. It would then necessarily follow that the remnant of the cell, with its con- tained parasite, would, by pressure, be thrust out of its place in the epithelial row. In so far as the mechanics of the process are con- cerned, there does not seem to be any choice as to whether the dead cell would be pushed out into the lumen or beneath the row into the subepithelial tissue. It looks as though one contingency would be as likely to occur as the other. Nevertheless, as early as 9 hours, but more particularly later, a considerable number of the parasites are to be found beneath the epithelium. This is more particularly the case with the macro- gametes, which is further in accord with the probabilities. For the macrogametocyte is a rather compact, solid-looking element and presumably will retain its integrity even though subjected to mechani- cal stress. On the contrary, the microgametocyte, the bulk of which is obviously merely decadent residual matter, would presumably readily yield and break tip if acted upon by pressure. Here and there in the epithelium a ripe male cell occurs in which the microgametes appear to be streaming out into the subepithelial tissue. Conditions such as these may, of course, be interpreted in two ways: the microgametes may have reached their places beneath the epithelium either actively or passively. An examination of fixed material clearly sheds no light on such a question, but anal- 32 PROCEEDINGS OF THE ACADEMY OF [Jan., favors the view that such a movement is the result of an actual motility, of the microgametes themselves. It may also be that in life the macrogametes are amoeboid and gain their subepithelial situation through their own motility, but here the probabilities are the other way. Analogy is not in favor of a belief that the macro- gamete is motile, nor do the macrogametes ever show amoeboid outlines in the fixed material. As to the actual situation of the parasites which occur beneath the epithelium, the fixed material does not give wholly conclusive evidence. They appear, however, to occur rather between the row of cells and the stroma than in the stroma itself. We thus have obvious male elements and obvious female elements occurring beneath the row of epithelium cells. The production of male and female cells necessarily involves their union, and the environment in which they both occur offers no obstacle to such a procedure. It is evident that the proper demonstration of such a process should be made upon living material, since, in a situation such as has been indicated, the identification of a minute fragment of highly basophil matter as a microgamete is largely a matter of guess-work. It is easy enough to identify the thread-like bodies of figs. 75 or 76 as microgametes, since here their relationships with their surroundings can be established. But it is clear that an isolated microgamete cannot be identified when it occurs in a region pre- senting such a confused picture as does the subepithelial tissue of the mammalian intestine. Nevertheless, when the macrogametes as they occurred in the subepithelial tissues of mouse 152 were studied, it was possible to separate them into two categories. A certain number were as figs. 88 to 91. Others were as fig. 93. These differ only that in the latter there was present in the cytoplasm a sharply basophil body. Also, conditions such as are illustrated in fig. 92 were found, where two elongated sharply basophil bodies are seen either lying upon or partly within the cytoplasm of a macrogamete. In consideration of the fact that it is axiomatic that the development of males and females involves fertilization, the indirect evidence here offered as 1o the actuality of the process seems satisfactory. Fig. 92 shows two supposed microgametes associated with the macrogamete, but it is safe to conclude that only one would have been successful in effecting union. The three cells shown in fig. 93 have somewhat irregular outlines, this being the condition as found. Assuming that this is not an 1916.] NATURAL SCIENCES OF PHILADELPHIA. 33 artifact, it indicates that they arc in no sense encysted, but are rather naked masses of cytoplasm. This irregularity of outline, however, is not necessarily associated with the supposed fertilization, since many of the macrogametes which showed the conspicuous chromatin body had maintained their smooth and regularly curved contours. Discussion. If the evolution of the macro- and microgametocytes of S. muris, as outlined above, be compared with that of Coccidium schubergi, as worked out by Schaudinn (1900) it will be seen that there is a very close resemblance. Thus, in both, the chromatin of the micro- gametocyte becomes divided into very small particles which collect in masses at the periphery and there condense to form the micro- gametes. This mode of division is designated by Minchin (1912) as chromidial fragmentation, the minute granules themselves being the familiar chromidia. Similarly, in both the sarcosporidian and the coccidian, the nucleus of the macrogametocyte discharges chro- matic granules into the cytoplasm where they are apparently absorbed. On the other hand, there are many marked differences. In the first place, in S. muris the male cell loses most if not all of its cyto- plasm, the formation of the microgametes taking place in what is morphologically the nucleus. Hence, there is not only no increase in size of the parasite after it gains an entrance into a host cell, but actually a loss of substance. It is somewhat the same with the female cell which, while it gains in bulk, does so to a rather limited extent. This is in marked contrast to the phenomena displayed by Coccidium schubergi, in which the macro- and microgametocytes are many times bulkier than the -merozoites from which they took origin. The sarcosporidian runs through its sexual development within from 9 to 18 hours, while judging from the data given by Schaudinn (p. 217), the coccidian requires about two days. The resemblances and differences between these two parasitic Protozoa are here merely pointed out. The resemblances are certainly very striking, but it seems premature to assign any signifi- cance to them. It is conceivable that they indicate a genetic rela- tionship between the Sarcosporidia and Coccidia, but it is just as likely that we are dealing with phenomena broader than those suitable for connecting groups of the value of the Coccidia and Sarcosporidia. The problem is one that requires more evidence before any far-reaching conclusions are warranted. 3 3-4 PROCEEDINGS OF THE ACADEMY OF [Jan.. Some of the features presented by the evolution of S. muris, however, when considered wholly by themselves, are worthy of attention. One of the most striking of these is the loss of cytoplasm displayed by the microgametocyte. So far as I am aware, no other protozoan displays a mode of development at all like this. Yet it is perhaps not so different from the usual procedure as it may at first seem. In all cases of the evolution of microgametes in Sporozoa the cytoplasm is largely or wholly inert. Thus, in the case used for comparison, that of Coccidium schubergi, the nuclear membrane dissolves and the chromidia collect in the cytoplasm where they eventually produce the microgametes. But there is nothing to show that the cytoplasm takes any active part in this development. It may function merely as a mechanical support for the micro- gametes. Furthermore, at the end of development the microgametes abandon the cytoplasmic mass, which is merely left behind. This, indeed, is generally true. Throughout the entire group of the Sporozoa the fully developed microgametocyte consists of a number of microgametes associated with a residuum that represents unused cytoplasm. This residuum is always abandoned, and, so far as it is possible to see, it is always about equal in bulk to that of the original cytoplasmic mass. It may therefore be suggested that in the case of *S. muris, the discarding of the cytoplasm merely takes place before the microgametes are developed instead of afterward. The next peculiarity is the fact that there is either only a slight gain of substance, as in the females, or an actual loss, as in the males. This is probably correlated with the speed with which the develop- ment is effected. In general, parasitic Protozoa that live in cells enter these cells as very minute bodies which increase in size for a longer or shorter period, growing at the expense of the cell, and it is only after they have reached a certain size that they divide. That is, the host cells are the dwelling places of these parasites. But in the case of »S. muris in the intestinal epithelium of the mouse, the host cell appears to be used merely as a temporary lodging place. The parasites, although they appear usually to destroy the cells they invade, do not seem to feed upon them. No sooner do they come to rest than they proceed forthwith to evolve into the mature sexual stages, which are produced within 18 hours or less. It is apparent that the so-called spore possesses enough energy at the outset to carry on this development, and it seems much more plausible to look upon the granules which the spores contain as reserve food than as the so-called sarcocystin. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 35 My studies do not extend beyond the formation of the zygote. In mice killed one to two days after feeding, oval cells resembling the zygotes, hut larger, are quite frequent. These are most abundant in the villi beneath the epithelial row, but they also occur in the cells and occasionally free in the lumen. Their ultimate fate has not been followed, but Erdmann (1914) describes what seems to be schizogony in the cells and subepithelial tissues of mice killed several days after feeding, and it is not at all unlikely that the oval bodies mentioned above are schizonts. One fact stands out clearly: the banana-shaped body of the Sar- cosporidia is not a spore1. There was never any reason to suppose that it was, even though this misleading designation has been used exclusively in the literature during recent years. Labbe (1899) designated it as a sporozoite, which, in view of its form, is far more plausible, and may indeed be a correct designation, so far as it is allowable to apply terms based on the conditions in the Telosporidia to stages of Sarcosporidia. For if the oval bodies occurring in one- and two-day mice give rise to the schizonts described by Erdmann, and if the products of this schizogony give origin to the familiar muscle cysts, then apparently the banana-shaped body is in some respects at least the analogue of the coccidian sporozoite. As against this interpretation is the fact that in ( Joccidia, where there is both schizogony and sporogony, the sporonts are derived from merozoites. This would suggest that the banana-shaped sarcosporidian element is a merozoite. Obviously, however, the evidence at hand is not sufficient to warrant a conclusion. Accord- ingly, it has been considered best to follow recent custom and to retain the term spore, despite the fact that it is incorrect, for it is believed that this procedure is less confusing than to adopt a different designation which future discovery might show to be equally incorrect. Summary. (1) The spores of Sarcocystis muris, ingested by a mouse, may reach the posterior part of the small intestine within one hour. (2) Invasion of the epithelium cells of the intestine may also take place within the same time. (3) Upon reaching the lumen of the intestine, the spore rapidly undergoes changes. The nucleus becomes larger and more con- spicuous, and a distinct nuclear net becomes evident. The granules characteristic of the spore as it occurs in the cyst either disappear or become much less evident. Further changes, however, do not take place unless the spore gains an intracellular situation. 36 PROCEEDINGS OF THE ACADEMY OF [Jan., (4) The spores are sexually differentiated, but it does not appear to be possible, at the outset, to distinguish between the males and females. (5) Within the mouse cells the changes undergone by the males, or microgametocytes, begin to be evident at the end of H to 2 hours. (6) These changes are, first, a further increase in the size of the nucleus accompanied by a further development of the nuclear net, and, second, degeneration and ultimate disappearance of the cyto- plasm. The cell contours become rough and irregular, vacuolization occurs, the cytoplasm becomes reduced to two masses of debris lying at the ends of the nucleus. These finally disappear, the entire process usually being completed at the end of 6 hours. The micro- gametocyte is thus reduced to its original nucleus, which, however, is of approximately the same size as the original spore. (7) Conspicuous internal changes next take place, which modify both the morphology and chemistry of the parasite. They may be considered under three headings, but they all take place more or less simultaneously. (a) The chromatin appears to suffer a loss in actual bulk, but alters in staining reaction from acidophil to basophil. (b) From occurring in large irregular masses or distributed along the threads of the linin net in strips or bands, the chromatin is reduced to granules which become progressively smaller and smaller and at the same time display a greater and greater affinity for chro- matin stains. (c) These granules finally assemble in clusters around the periphery of the organism. (8) The next step is the solidification of these granular clusters into rounded, solid balls. These balls next elongate and become minute, thread-like bodies, which are the microgametes. This stage may be found in mice killed from 9 to 18 hours after inoculation. It is very rare in the shorter of these two periods, but has apparently passed its acme at the end of 18 hours. (9) The females go through with their development side bjr side with the males, but there are no such conspicuous changes and the early female stages are much like the spore which has just entered the cell. (10) In the course of a few hours, however, the females can be picked out, appearing as broadly oval cells, relatively shorter and broader than the original spores. The cytoplasm is all retained and assumes a rather dense alveolar texture. The nucleus shows no L916-] NATURAL SCIENCES OF PHILADELPHIA. 37 evidenl increase in size. The unclear net does not develop as it does in the male parasite, luii the chromatin concentrates into a single large karyosome which maintains an acidophil rather than a basophil staining reaction. (11) In the 6- to 15-hour periods, phenomena are seen which seem besl interpreted by regarding them as maturation. Irregular chromatin granules appear in close association with the nuclear membrane. Later these granules pass out into the cytoplasm, and finally disappear. (12) The mature female, or macrogamete, may be found in mice killed from 11 to 18 hours after inoculation. (13) Finally, in the 18-hour stages, macrogametes may be found which in some cases show minute, thread-like bodies upon their surfaces, and in others contain within their substances small solid chromatic bodies, one in each case. These appearances are regarded as warranting the interpretation that fertilization takes place. Explanation of Plates I, II, III, IV, V. The original figures wore made by the author and later copied in ink by Mr. Haines, artist of the Bureau of Animal Industry. The greater number are from camera outlines, made on the table with a 2 mm. apoehromatic objective and Xo. 18 eyepiece. This method yields a magnification of about 3,530 diame- ters. The remaining drawings are free-hand sketches of approximately the same enlargement. In reproduction, the drawings have been reduced in the ratio of 3 to 2, and hence are about 2,350 times larger than the objects themselves. In order to show the relationships between the parasites and the cells, the latter have in some cases been drawn in outline. It was not, however, considered necessary to do this throughout. Plate I. — Fig. 1. — Camera outline. Giemsa stain. Spores taken directly from a cyst. The cytoplasm stains a dense blue; the nucleus is a reddish vesicle with little or no internal structure. The spores are broader at one end than the other. Fig. 2. — Camera outline. Thionin and acid fuchsin. Mouse 248, 2 hours, int. 30. Spore free in lumen. Cell outlines clear cut; a periplast present; cytoplasm shows no signs of degeneracy. The nucleus shows a nuclear net and is somewhat enlarged, causing the cell edges to bulge. Fig. 3. — Camera outline. Delafield and acid fuchsin. Mouse 251, 1§ hours, int. 9. Cytoplasm slightly degenerate, but staining deeply. Nucleus enlarged, about to cause bulging of the sides of the cell and showing a central mass joined to the nuclear membrane with strands. Fig. 4. — Camera outline. Delafield and acid fuchsin. Mouse 251, 1J hours, int. 9. Cytoplasm dense and staining deeply. Nucleus enlarged, with the central mass separated into granules. Fig. 5. — Camera outline. Delafield. Mouse 248, 2 hours, int. 27. Cytoplasm dense with occasional clear spaces. Nucleus not enlarged. Chromatin in the form of small granules distributed throughout the net. Fig. 6. — Camera outline. Thionin and acid fuchsin. Mouse 248, 2 hours, int. 30. Cytoplasm very solid, staining deeply with the thionin and showing no signs of degeneracy. Nucleus is a vacuole which stains more or less homogeneously, apparently due to the fact that the nuclear sap has stained as well as the nuclear net and thus the latter is obscured. This is a frequent appearance, especially in parasites free in the lumen. 38 PROCEEDINGS OF THE ACADEMY OF [Jan., Fig. 7.— Camera outline. Delafield. Mouse 248, 2 hours, int. 15. Typical early male form. Nucleus greatly enlarged; cytoplasm reduced to two separate masses, one at each end of the parasite. Nuclear net distinct. Fig. 8. — Camera outline. Thionin and acid fuchsin. Mouse 248, 2 hours, int. 30. Early male stage. Cytoplasm beginning to show irregular out- lines and to become vacuolated. Nucleus not greatly enlarged, but otherwise typical. Fig. 9. — Camera out line. Thionin and acid fuchsin. Mouse 248, 2 hours, int. 30. Early male stage. Shows very clearly the degeneration of the cytoplasm, evidenced by the rough outlines and vacuolization. Nucleus enlarged, with a distinct nuclear net. Fig. 10.— Camera outline. Thionin and acid fuchsin. Mouse 248, 2 hours, int. 30. Early male stage. Cytoplasm degenerate. Nucleus elongated transversely, a frequent appearance in the early stages. Nuclear net showing a single large central mass, in which is a vacuity. Fig. 11. — Camera outline. Thionin and acid fuchsin. Mouse 248, 2 hours, int. 30. Early stage of male. Cytoplasm reduced in amount and degenerate in appearance. Nucleus greatly enlarged with a central aggregation differen- tiated into an acidophil mass beset with basophil granules. Fig. 12. — Free-hand drawing. Thionin and eosin. Mouse 248, 2 hours, int. 30. Early male. Shows a method of degeneration of the cytoplasm frequently observed. The cytoplasm consists of a number of basophil masses lying in a faintly staining matrix. The nucleus was typical. Fig. 13. — Free-hand drawing. Thionin and eosin. Mouse 248, 2 hours, int. 30. Early male stage. Shows mode of degeneration of cytoplasm, which at one end of the parasite is broken up into a mass of basophil lumps, apparently lying free in the host tissue. The nucleus was typical. Fig. 14. — Camera outline. Thionin and eosin. Mouse 248, 2 hours, int. 30. Early male stage, probably slightly earlier than the form shown in fig. 13. The cytoplasm has separated into a number of denser masses, taking the thionin, which lie in an almost achromatic ground substance. The nucleus is typical. Fig. 15. — Camera outline. Wright's stain. Mouse 125, 2 to 2§ hours. Early male stage, showing nuclear enlargement. Fig. 16. — Camera outline. Wright's stain and eosin. Mouse 125, 2 to 2\ hours. Early male stage. Plate II. — Fig. 17. — Camera outline. Wright's stain and eosin. Mouse 125, 2 to 2\ hours. Early male stage. Cytoplasm greatly reduced and degener- ate. Nucleus much enlarged with a very distinct nuclear net. Fig. 18. — Camera outline. Thionin and acid fuchsin. Mouse 249, 3 hours, int. 22. Two early males, both lying in the same vacuole. In both the nuclei are enlarged, and although the cytoplasm is reduced, it still retains its smooth outlines and is not vacuolated. Nuclei typical. Fig. 19. — Camera outline. Thionin and acid fuchsin. Mouse 249, 3 hours, int. 22. Male. Cytoplasm reduced to a small cap at either end of the parasite. Nucleus greatly enlarged and showing the usual structure. P'ig. 20. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 249, 3 hours, int. 30. Early male stage. Cytoplasm somewhat reduced in quan- tity and showing signs of degeneration. Nucleus shows a net of the usual character and is provided with one large conspicuous granule. This kind of granule appears to require iron hsematoxylin for its demonstration. The parasite lies in a partly emptied mucous cell. Fig. 21. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 249, 3 hours, int. 30. Possibly an early female stage. Cytoplasm dense; nucleus clear cut with a central mass and three black granules on periphery. Fig. 22. — Camera outline. Thionin and acid fuchsin. Mouse 249, 3 hours, int. 22. Probably an early female stage. Cytoplasm sharply delimited and dense. Nucleus enlarged, but not sufficiently so as to cause bulging of the cell boundaries. Within the nucleus is a round red body from which blue rays extend to the nuclear membrane. 1910.] NATURAL SCIENCES OF PHILADELPHIA. 39 Fig. 23. — Camera outline. Wright's stain. Mouse L26, 3 to '-<\ hours. Early male form. The cytoplasm has nearly disappeared. The nucleus is typical. Fig. 24. — Camera outline. Mouse L26, 3 to 3^ hours. Early male stage. Cytoplasm greatly reduced. Nucleus very large with a well-developed nuclear iii -I , Fig. 2"). — Camera outline. Iron hematoxylin. Mouse 261, I hours/ int. —'■'>. Early stage of doubtful sex. Cytoplasm sharply delimited and dense. Nuclear net obscured. A large black granule present. Fig. 26. Camera outline. Iron hematoxylin . Mouse 2fd , 4 hours, int. —3. Parasite lies in what seems to be a mucous cell. Cytoplasm dense and nearly homogeneous. Nucleus clear cut, showing a sharply marked karyo- some and two conspicuous black granules. This parasite might be either a male or a female. Fig. 27. — Camera outline. Thionin. Mouse 261, -4 hours, int. —3. Early male stage. Consists of an enlarged nucleus surrounded by a narrow strip of cytoplasm, with a quantity of degenerate material lying on one side. The parasite is probably cut obliquely. The nuclear net is well developed. Fig. 28. — Free-hand drawing. Thionin and acid fuchsin. Mouse 247, 4 hours, int. 14. Early female stage. Cell outlines smooth and cytoplasm appar- ently not degenerate. Nucleus rather small with a clear-cut membrane and a central karyosome. Fig. 29. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 247, 4 hours, int. 14. Early female stage. Cell boundaries sharp. The cytoplasm is neither degenerate nor has it suffered any loss in quantity. The nucleus does not cause any protrusion of the sides of the cell. A large, distinct karyosome is present. Figure diagrammatic. Fig. 30. — Camera outline. Delafield and acid fuchsin. Mouse 247, 4 hours, int. 19. Form difficult to classify. The cytoplasm shows a distinct external boundary and, while vacuolated, is apparently not degenerate. Nucleus is a vesicle with a very large central mass. Fig. 31. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 250, 5 hours, int. 22. Male. Cytoplasm has disappeared, except for a cres- centic mass at one end. The nucleus is greatly enlarged and shows a well- developed net. The net itself is acidophil, the granules associated with it are basophil. Fig. 32. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 250, 5 hours, int. 22. Male. Cytoplasm has apparently wholly disappeared. The nucleus is very large and shows an acidophil net beset with a number of sharply basophil granules. Fig. 33. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 250, 5 hours, int. 22. Female. Cytoplasm dense and, while vacuolated, shows no signs of degeneration. Nucleus a vesicle with a large karyosome and two intensely black granules. Strands joining the karyosome with the nuclear membrane could not be made out. Fig. 34. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 250, 4 hours, int. 22. Female. Cytoplasm shows no signs of degeneracy. It consists of a lighter ground substance in which are a number of poorly defined darker bodies. Nucleus a vesicle in which is a large karyosome. Little strands extend out from the karyosome, but they could not be traced the whole distance to the nuclear membrane. Two black granules present. Fig. 35. — Camera outline. Delafield and acid fuchsin. Mouse 253, 6 hours, int. 19. Female. In this figure an attempt is made to indicate the alveolar character of the cytoplasm of the females. Nucleus a vesicle containing a large karyosome. Fig. 36. — Camera outline. Delafield and acid fuchsin. Mouse 253, 6 hours, int. 19. Female. Cytoplasm rather dense, but liberally vacuolated. Nucleus a vesicle with a large karyosome. Plate III. — Fig. 37. — Camera outline. Delafield and acid fuchsin. Mouse 253, 6 hours, int. 19. The figure shows two females which have invaded the same cell and developed side by side. 1 See the annotation with regard to mouse 261, on p. 19. 40 PROCEEDINGS OF THE ACADEMY OF [Jan., Fig. 38. — Camera outline. Thionin and acid fuchsin. Mouse 253, 6 hours, int. 16. Male. Parasite reduced to its nucleus which shows the nuclear net and a large central mass of chromatin. Fig. 39. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 99, 3 and 6 hours. Male. The parasite, reduced to the nucleus, shows a well-developed nuclear net and a basophil karyosome nearly cut into two by a cleft,. Fig. 40. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. Parasite reduced to its nucleus, which shows the typical net and a large central aggregation in which are five basophil granules. Fig. 41. — Camera outline. Delafield and eosin. Mouse 106, 9 hours. Typical male parasite. Fig. 42. — Camera outline. Delafield and acid fuchsin. Mouse 106, 9 hours. The figure shows two male parasites lying in adjacent cells of the mouse, and it is instructive in that a marked contrast in staining reaction is to be seen, the upper cell being acidophil, the lower basophil. Fig. 43. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 99, 3 and 6 hours. Male, doubtless belonging to the 6-hour period. The nuclear net is in the main acidophil, but a portion of it has taken on a sharply basophil staining reaction. Fig. 44. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. Shows a typical nuclear net, a large acidophil karyosome and a number of basophil granules. Fig. 45. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The nuclear material is partly acidophil, partly basophil. Fig. 46.— Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The chromatin is basophil and finely divided. Fig. 47. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The chromatin is basophil, and occurs as minute granules, except for the cluster of larger granules which is presumably derived from the karyosome. Fig. 48. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The chromatin is partly acidophil, partly basophil. Fig. 49. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. The chromatin is basophil and in a state of fine subdivision, except for the central mass which is probably derived from the karyosome. Fig. 50. — Camera outline. Thionin and acid fuchsin. Mouse 106, 9 hours. Male. The parasite shows a delicate net provided here and there with basophil granules. Fig. 51. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The parasite shows a delicate net provided with minute chromatin granules. Fig. 52. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 120> IO5 and 17 hours. Male. The chromatin is extremely basophil and the bulk of it is concentrated into round balls. It is impossible to say to which of the two infective feeds this parasite belongs. Fig. 53. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 120, 10J and 17 hours. Shows two male parasites lying side by side. Instructive on account of the marked difference in staining reaction. Plate IV. — Fig. 54. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 120, 10§ and 17 hours. Male. The central aggregation consists of sharply basophil substance between which is acidophil material. In the former rounded granules can be distinguished. This central mass is throwing out extensions into the balance of the nucleus where there are aggregates composed partly of sharply black granules and partly of acidophil material. Fig. 55. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 120, IO5 and 17 hours. Male. The chromatin is black in the iron hematoxylin and occurs as minute granules. The general mass is showing a tendency both to form small clusters and to assemble upon the periphery. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 41 Fig. 56.— Camera outline. Iron hematoxylin and acid fuchsin. Mouse 120, lo' and 17 liours. Male. The chromatin occur- as small granules which appear to be migrating toward the periphery. Fig. .r)7. — Camera outline. Wright's stain. Mouse 146, 111 liours. Male. There is a large, irregular mass consisting of acidophil material which is liberally provided with puhctiform basophil granules, ami. in addition, a number of sharply staining elongated granules. It is difficull to determine just where in the development of the male parasite a form like this belongs. Fig. 58. Camera outline. Delafield and acid fuchsin. Mouse 106, 9 hours. Male. The chromatin is in the form of minute basophil granules. There is a large irregular mass of these, and three rounded clusters near the periphery. Fig. 59. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The chromatin is aggregated into clusters of 6ne granules, all of which are sharply basophil. Some of these clusters are wholly independ- ent of one another; others are still united by strips of acidophil substance. Fig. til). -Camera outline. Iron hematoxylin and acid fuchsin. Mouse 179, 16j hours, int. —1. Male. The chromatin occurs as minute basophil granules, either scattered or aggregated into clusters. A marked tendency toward the assumption of a peripheral situation is to be noted. The remnant of the linin network is omitted in the drawing. Fig. 61. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 179, lti'. hours, int. —1. The chromatin is in the form of minute basophil granules which occur in clusters, most of which are peripheral. The remnant of the linin network is omitted from the drawing. Fig. 62. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 179, I65 hours, int. —1. Male. This figure portrays much the same conditions as are shown in fig. 61, but only an optical section of the parasite is shown. The granular clusters are thus seen to be exclusively peripheral. Fig. 63. — Camera outline. Delafield and acid fuchsin. Mouse 120, 10t and 17 hours. Form supposed to be a male. Fig. 64. — Free-hand sketch. Iron ha'matoxylin and acid fuchsin. Mouse 120, IO5 and 17 hours. Supposed male. Fig. 65. — Camera outline. Iron haematoxylin and acid fuchsin. Mouse 106, 9 hours. Male. The chromatin occurs as clusters of minute granules. Fig. 66. — Camera outline. Wright's stain and eosin. Mouse 152, IS hours. Male. Optical section. The chromatin is in the form of minute, intensely basophil granules, aggregated in clusters that are arranged in a regular man- ner around the periphery. P'ig. 67. — Camera outline. Wright's stain and eosin. Mouse 152, IS hours, int. —2. Male. Optical section. The granular clusters, the forerunners of the microgametes, are seen to be arranged in a regular manner around the periphery. They are slightly more compact than in fig. 66. Fig. 68. — Camera outline. Wright's stain and eosin. Mouse 152, IS hours, int. —2. Optical section. The clusters are becoming more and more solid. Fig. 69. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 106, 9 hours. The microgamete nuclei have still further solidified. It is worthy of note that fig. 69, from a 9-hour mouse, represents later conditions than fig. 68, an 18-hour stage. Fig. 70. — Camera outline. Iron haematoxylin and acid fuchsin. Mouse 106, 9 hours. Optical section. The microgamete nuclei have become round solid balls. Fig. 71. — Camera outline. Iron hematoxylin and acid fuchsin. Mouse 100, 9 hours. Male. Condition intermediate between those shown in figs. 09 and 70. Plate V. — Fig. 72. — Camera outline. Wright's stain anil eosin. Mouse 152, 18 hours, int. —2. Male. The solid nuclei are elongating to form the micro- gametes. Fig. 73. — Camera outline. Wright's stain and eosin. Mouse 152, IS hours, int. —2. The elongation continues. 42 PROCEEDINGS OF THE ACADEMY OF [Jan., Fig. 74. — Camera outline. Iron hematoxylin and eosin. Mouse 106, 9 hours. Male. Stage showing microgametes. The parasite is unusually small. This stage is very rare in periods as short as 9 hours. Fig. 75. — Camera outline. Wright's stain. Mouse 152, 18 hours. Male. Stage showing microgametes. Fig. 76. — Camera outline. Iron hsematoxylin. Mouse 152, 18 hours, int. —1. Optical section of the same stage of development as shown in fig. 75. Fig. 77. — Free-hand sketch. Thionin and acid fuchsin. Mouse 247, 4 hours, int. 14. Female, typical early stage. Fig. 78. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 106, 9 hours. Female. Cytoplasm mottled. Karyosome shows several black granules. This is possibly a very early stage of maturation. Fig. 79. — Camera outline. Iron hsematoxylin. Mouse 113, 9 hours. Typical female. Fig. 80. — Free-hand sketch. Iron hsematoxylin. Mouse 113, 9 hours. Female. Fig. 81. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 106, 9 hours. Female. Cytoplasm shows the alveolar structure which can frequently be made out in the females. Nucleus shows a ring of deeply staining granules lying around the membrane. These are taken to represent that part of the chromatin which is rejected during maturation. Pig. 82. — Camera outline. Delafield and acid fuchsin. Mouse 106, 9 hours. Female, same phase as shown in fig. 83. The granules lying in the mouse cell are not believed to have anything to do with the parasite. Fig. 83. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 106, 9 hours. Female. Later stage of maturation. Fig. 84. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 145, 11 j hours, int. — 1. Female. Late stage of maturation. Fig. 85. — Camera outline. Wright's stain. Mouse 146, 11? hours, int. — 1. Female. Late stage of maturation. Fig. 86. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 120, 10! and 17 hours. Female, late stage of maturation. Fig. 87. — Camera outline. Wright's stain. Mouse 146, 11! hours, int. — 1. Female, late stage of maturation. Fig. 88. — Camera outline. Wright's stain and eosin. Mouse 152, 18 hours, int. —2. Mature female or macrogamete. Fig. 89. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 120, 10| and 17 hours. Macrogamete. Fig. 90. — Camera outline. Iron hsematoxylin and acid fuchsin. Mouse 145, Hi hours, int. — 1. Macrogamete. Fig. 91. — Camera outline. Wright's stain and eosin. Mouse 152, 18 hours, int. —2. Macrogamete. Fig. 92. — Camera outline. Wright's stain and eosin. Mouse 152, 18 hours, int. —2. Two microgametes are seeking to fertilize a macrogamete. Fig. 93. — Camera outline. Wright's stain and eosin. Mouse 152, 18 hours, int. —2. Three mae.rogamet.es are shown, in each of which is a conspicuous chromatic element, taken to be the microgamete. Bibliography. Crawley, Howard. 1913. Initial stages of Sarcocystis infection. [Note presented before Helminthol. Soc. Wash., D. C, Feb. 6.] . Lief., xx + 180 pp., 190 figs.) MiNCHIN, K. A. 1912. An introduction to the study of the Protozoa, with special reference to the parasitic forms. xi + 517pp., I94figs. 8°. London. Schaudinn, Fritz. 1900. Untersuchungen iiber den Generationswechsel bei Coecidien. \ utid.e— .1 rgonauta argo Linne . 1 rgona uta nodosa Solander .1 rgonauta (species) + + — 1 Family PoLYPODIRS! — Polypus oliveri Berry shore 2 Polypus la r in ii il i it ii sis Berry Polypus (young of various MoschiU s challengeri Berry 630 1 1 3 2 Family Spiiulid.e — Spir/ilu spirula \ Linne) + Family < )xyciioteuthid.e — On ychoteuth is banksii (Leach) 6 1 Family I.YcoTKrTHiD.E — A' i in a I nla m pas regalis Berry • 2 Family Lampadiotki-thid.e— L-iiii pii'lmli uthis miijali in Berry 1 Family Fxoploteuthid.e — Aliralia astral i mala Berry.. Abraliopsis (species) 1 1 I? Family < >mmastrkphid.e — Stht a at i uthis barlramii Lesueur) Euclt nti uthis (species) 3 3 6 Family Craxchiid.e — Megalocra n chin pari Ins Berrv 1 Family Xattiud.e — Nautilus pompilius Linne . X a a 1 1 1 ii s macromphalus Sowerby + + Total specimens re- ported 3 5 + 24 13 Tiie fauna outlined in the table may conveniently be summarized as follows: < >< rOPODA M VOPSIDA Families. 4 1 CJenera. 5 1 8 1 Spi ecies. 7 1 8 2 Species with photogenic organs. 0 I? CEgopslda 6 7 Tetrabranchiata 1 0 Total 12 15 18 48 proceedings of the academy of [feb., New Terms Proposed. The following taxonomic terms are used for the first time in the present paper: Moschites challengeri, new name (for Eledone verrucosa Hoyle, 1886, in part, not of Verrill, 1881). Lampadioteuihidm, new family. Lampadioteuthis megaleia, new genus and species. Eucleoteuthis, new genus (for Symplectoteuthis luminosa Sasaki, 1915). Megalocranchia /tardus, new species. Verrilliteuthis, new genus (for Desmoteuthis Verrill, December, 1881, in part, not of Verrill, February, 1881). Systematic Review of the Species. Order DIBRANCHIATA. Suborder OCTOPODA. Family CIRROTEUTHIDiE. Genus STAUROTEUTHIS Verrill, 1879. 1. Stauroteuthis meangensis (Hoyle, 1885). 188"). Cirroteuthis meangensis Hovle, Ann. and Mag. Nat. Hist., (5), 15, ].. 234. 188"). Cirroteuthis meangensis Hoyle, Proc. Roy. Soc. Edinb., 13, p. 111. 1880. Cirroteuthis meangensis Hoyle, Challenger Rep., p. 63, pi. 9, figs. 12, 13: pi. 11, figs. 1.2; pi. 13, figs. 5, 6. 1904. Stauroteuthis meangensis Hoyle, Bull. Mus. Comp. Zool., 43, p. 5. One young specimen was taken by the Challenger in 600 fathoms, north of the Kermadec Islands. Family AMPHITRETID^E. Genus AMPHITRETUS Hoyle, 1885. 2. Amphitretus pelagicus Hoyle, 1885. 1885. Amphitretus pelagicus Hoyle, Ann. and Mag. Nat. Hist., (5), 15, p. 235. 1885. Amphitretus pelagicus Hoyle, Narrative Chall. Exp., 1, p. 271, fig. 106. 1885. Amphitretus pelagicus Hoyle, Proc. Roy. Soc. Edinb., 13, p. 113, fig. 1886. Amphitretus pelagicus Hoyle, Challenger Rep., p. 67, pi. 9, figs. 7-9. The type locality of this species is 29° 55' S. Lat., 178° 14' W. Long., off the Kermadec Islands. Here one specimen was dredged by the Challenger in 520 fathoms. Family ARGONAUTID^]. Genus ARGONAUTA Linne\ 1758. 3. Argonauta argo I.irme. 1758. 1758. Argonauta Argo Linne, Syst. Nat., ed. X, p. 70S. 1010. Argonauta argo lredale, Proc. Malac. Soc, 9, pp. 70, 72. 1915. Argonauta argo Oliver, Trans. N. Z. Inst., 47, p. 560. lredale and Oliver record a few shells of this species washed up on the beaches of Sunday Island. Comparison should probably be made with .1. pacifica Dall and A. grand if ormis Perry. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 49 4. Argonauta nodosa Solander, 17m; 1.786. Argonauta nodosa Solandcr. Portland Cat., p. 96, No. 2120. I'.Ui). Argonauta nodosa [redale, Proc. Malac. Soc, 9, pp. 70, 72, L915. Argonauta nodosa Oliver, Trans. X. Z. Inst., 17, p. 560. Both [redale and Oliver state that animals and shells of this species are occasionally washed to land at Sunday Esland. Argonauta species. PI. VI, fig. I. L914. Argonauta sp. Berry, Trans. X. Z. Inst, 46, p. 135. A very small female without a shell fS. S. B. 420] collected by Bell in 1910 is presumably the same species as the specimens already reported in the paper cited. A photograph of one of the former specimens, showing the hectocotylus in situ within the mantle cavity of the female, is now given as fig. 1 on Plate VI. Oliver (1915, p. 500) suggests that these specimens are to be referred to .1. nodosa Solandcr. Family POLYPODIDiE. Genus POLYPUS Schneider, 1784. 5. Polypus oliveri Berry, 1914. PI. VI, fig. 2. 1914. Polypus oliveri Berry, Trans. X. Z. Inst.. 40. p. 136. 1915. Polypus oliveri Oliver, Trans. X. Z. Inst., 47, pp. 560, 564. As this species has not been figured, the matter is remedied by the photograph reproduced in the accompanying plate. 6. Polypus kermadecensis Berry, 1914. 1914. Polypus kermadecensis Berry, Trans. X'. Z. Inst., 46, p. 138, pis. 7, 8. Polypus species (Young). Two very juvenile Polypi in the second collection cannot yet be determined [S. S. B. 434]. Genus MOSCHITES Schneider, 17s4. 7. Moschites challengeri new name. 1SS6. EUxlone verrucosa Hovle, in part. Challenger "Rep., p. 104 (not of Yen-ill. Bull. Mus. Comp. Zool., 8, p. 105). One specimen was dredged off the Kermadecs in 630 fathoms by the Challenger, and reported by Hoyle as the Atlantic M. verrucosa (Verrill). I have long felt grave doubt- as to the correctness of Hoyle's determination. The Kermadec Islands and the eastern coast of the United States are localities so extremely remote and isolated from one another, that such an anomalous distribution for a crawling, bottom-loving species of this sort seems " priori at leasl doubtful. Fortunately we have Hoyle's express statemenl that the Challenger specimen "has the extremity of the hectocotylized arm 4 50 PROCEEDINGS OF THE ACADEMY OF [Feb., formed like that of an Octopus rather than like that of an Eledone, as shown in Verrill's figure." In the light of our present knowledge that even relatively slight differences in the structure of the hecto- cotylus are important in distinguishing species, there is evidently available here a sufficient diagnostic character to separate the two forms. A new name therefore seems expedient for the Kermadec species. Suborder DECAPODA. Division MYOPSIDA. Family SPIRULID^L Genus SPIRULA Lamarck, 1799. 8. Spirula spirula (Linne, 1-758). 1758. Nautilus spirula Linne, Syst. Nat., ed. X, p. 710. 1910. Spirula spirula Iredale, Proc. Malac. Soc, y, pp. 70, 72. 1915. Spirula spirula Oliver, Trans. N. Z. Inst., 47, .p. 558. Oliver states that dead shells are abundant on the Sunday Island beaches, occasionally with portions of the. animal. Division (EGOPSIDA. Family ONYCHOTEUTHID^E. Genus ONYCHOTEUTHIS Lichtenstein, 1818. 9. Onychoteuthis banksii (Leach, 1817). 1817. Loligo Banskii Leach, Zool. Misc., 3, p. 141. 1826. Onychoteuthis Banskii Ferussac, Annates Sci. Nat., (1), 7, p. 151. 1914. Onychoteuthis banksii Berry, Trans. N. Z. Inst., 46, p. 139. A young specimen of this species is in the present collection [S. S. B. 422]. Family LYCOTEUTHIDiE. Genus NEMATOLAMPAS Berry, 1913. 10. Nematolampas regalis Berry, 1913. PI. VII; PI. VIII. fig. 5. 1913. Nematolampas regalis Berry, Biol. Bull., 25, p. 20S, text fig. 1. 1914. Nematolampas regalis Berry, Trans. N. Z. Inst., 46, p. 140, text tie's. 1-4, PL IX. Sketches are now given of one of the curious hood-shaped suckers which appear along the distal regions of the arms, and also of a portion of the gladius (figs. 1-3). The gladius of this species, as shown by a few fragments extracted from the poorly preserved paratype (S. S. B. 410), is exceedingly slender and consists of little but the narrow rhachis. The wings are narrow and set very obliquely, so that the ventral concavity is unusually narrow and deep. They finally terminate in a very small, delicate, spoon-shaped cone, which is supported by a small, I'.Hii.l NATURAL S( IKN( KS OF l'HILADKLl'll I A. .51 solid, distinctly bulbous swelling at the extreme base of the slender rluichis (figs. 2, 3). Fig. 1. Fig. 2. Fig. 3. Fig. 1. — Nematolampas regalis, camera sketch of sucker from distal portion of right third arm [-409], from mount in balsam, X 70. Fig. 2. — Nematolampas regalis, oblique ventral view of posterior extremity of gladius [410], camera drawing, X 20. Fig. 3. — Oblique dorsal view of. same, same scale. Family LAMPADIOTEUTHID^ new family. Squids of small size, with terminal, sagittate fins. Arms with two rows of suckers. Tentacle clubs with four rows of suckers. No hooks present on either arms or tentacles. Buccal membrane eight-pointed. Gladius with lateral wings, but no terminal cone. Luminous organs present in the pallial chamber, on the eyeball, along the stalk of the tentacles, and at the base of the tentacles. For the present the characters of the new family must be drawn from those of the type genus alone, so no doubt important emenda- tion must later take place. I would tentatively place the Lampadioteuthidce between the Lycoteuthidce on the one hand and the Enoploteuthidce on the other. The group cannot be referred to the Lycoteuthidce on account of the entirely different construction of the gladii. Some teuthologists may prefer to place it with the Enoploteuthidce, but it seems to me that the complete lack of hooks or modified suckers on either tenta- cles or arms produces an anomaly fatal to this arrangement. Of course a fuller knowledge of the anatomy of all these forms than is now possible is as likely as not to bring about an entirely different classification, but I think the one adopted is for the meanwhile the most reasonable. 52 PROCEEDINGS OF THE ACADEMY OF [Feb., Genus LAMPADIOTEUTHIS new genus. Body loliginiform. Fins broad, subsagittate, terminal; slightly surpassing the body posteriorly. Arms with two rows of minute suckers, but no hooks. Tentacle clubs not expanded; armed with four rows of smaM suckers. Buccal membrane eight-pointed, pale in color, but dotted with numerous dark chromatophores between the trabecular. Photogenic organs richly developed; their distribution being as follows: 1. One at the extreme base of each tentacle and four along the stalk. 2. A longitudinal series of three large organs on the ventral side of the eyeball (of which the median is notably the smallest) and a single similar organ on the eyelid just back of the opening. 3. Five in- trapallial organs, including 2 anal, 2 branchial (very large), and 1 abdominal organ. No luminous organs have been identified any- where in the outer integument of the arms, head, or mantle. Gladius comprising a rapidly tapering rha- chis, free in front, but with delicate, somewhat broadly angular wings along its posterior two- thirds. Type. — The following species. 11. Lampadioteuthis megaleia new species. PI. VIII, figs. 1-4. Animal small. Mantle firm, fleshy, cylindro- conic in outline; in front rather flaring, thence tapering quickly to a point. Fins large and fairly thick in proportion to the small size of the body; slightly more than half as long as the mantle; each fin about a fifth longer than wide; strongly united in the median line posteriorly, where they extend slightly past the tip of the mantle; triangular, the posterior margins nearly straight and converging to a very obtuse point; anterior margins almost straight on the outward edges, but somewhat squarely arcuate in front, and thence descending toward the body so as to form small lobes. Head large, almost as wide as the flaring mantle opening, and wider than the body is Fig. 4. — Lampadioteu- this megaleia, semi- diagrammatic repre- sentation of cut ire animal from the ven- tral aspect, to show the distribution of the photocgeni or- gans, about natural size. M»16.] NATURAL SCIK.WKS OF I'll 1 L ADELPHIA. 53 near the middle; strongly compressed; flattened above, somewhat de- pressed below between the large, rounded eyes. Funnel broad, rather flat and short, not extending to the middle of the eyes; valved, the valve appearing as a very delicate, crescentic, pocket-like mem- brane on the inner dorsal wall a little way behind the aperture. Funnel organ not easily made out in the material available, although the A-shaped median organ of the dorsal wall is evident (fig. 6). Funnel locking cartilage straight, simple, pointed anteriorly, but rounded truncate at the other end, and otherwise of nearly even width; grooves shallow, simple, straight; margins raised and reflexed (fig. 7). Slender ridges on the mantle correspond as usual. Fig. 6. Fig. 7. Fig. 6. — Lampadioteuthis megaleia, outline sketch of the funnel region [416], X 2§; an., anus; phot., anal photophores; v., valve; v.o., median pad of funnel organ. Fig. 7 .—Lampadioteuthis megaleia, camera outline of left funnel cartilage [416], X 8. Sessile arms little attenuate, the longest over two-thirds as long as the mantle; unequal; somewhat mutilated in the specimen at hand, but the formula of relative length apparently 3 = 2, 4, 1; dorsal arms notably shorter and less robust than the remainder. Outer margin of ventral and third arms keeled, the second pair more obscurely so, and the dorsal pair merely angled. On all the arms except the dorsal pair the keel terminates in a very delicate, transparent carina of membrane. The third arms in particular bear a strongly trabecu- late hyaline membrane along their ventral margins, though all the arms possess well-developed swimming membranes homologous with these. Sucker-bearing portion of arms compressed; the suckers 54 PROCEEDINGS OF THE ACADEMY OF [Feb., in two rows, minute on all the arms, but excessively so on the ventral pair. On a horny ring from one of the distal suckers of the left third arm, I count seven teeth along the upper margin, the central ones especially being long, slender, closely spaced, and rather bluntly pointed. Tentacles cylindrical, over twice as long as the arms; robust at base, thence tapering rapidly to the slender club, which is scarcely or not at all expanded (PL VIII, fig. 3). Suckers of club in four much compressed rows; minute; basin-shaped; the horny rings of the largest armed with 9-13 slender acute teeth along the upper semi- circumference (figs. 8, 9). Fig. 8. Fig. 9. Fig. 10. Fig. 8. — Lampadioteuthis megaleia, oral view of a median sucker from the left tentacle club of the type [416], X 70, camera outline from a mount in balsam. Fig. 9. — Lampadioteuthis megaleia, nearly apical view of a similar sucker [4161, X 70, camera outline from a mount in balsam. Fig. 10. — Lampadioteuthis megaleia, optical section of second photophore from base of left tentacle of type [416], camera sketch from mount in balsam, X 15. Buccal membrane eight-pointed; the lappets light colored, but the delicate intervening membranes dotted on the outside with dark, wine-colored to brownish chromatophores. Fig. 5. Fig. 11. Fig. 5. — Lampadioteuthis megaleia, left eyeball, seen from below in outline, showing position of photophores, X 1§. Fig. 11. — Lampadioteuthis megaleia, basal photophore from left tentacle of type [416], seen in optical section, X 15, camera sketch from mount in balsam ; chr., chromatophores; phot., photogenic organ; st., stalk of same. 1916.] NATURAL SCIKNCKS OF I'll 1 1. \ D 1 ;i.l'l 1 1 A ." .i.i Subocular photophores large, circular in outline, whitish; four in number on each eye; three, of which the median is somewhat the smallest, occupy the usual situs on the ventral periphery; the fourth is larger than any of these, and situated just within the boundary of the pupil, at a point almost exactly behind the centre of the lens (fig.5). A series of four large ovoid photophores appears embedded in the stalk of each tentacle below the club, the three proximal ones occupy- ing the proximal half of the tentacle, the distal one somewhat isolated from the others and near the club. At the extreme base of the tentacle borne on a short stalk on its outer side appears a spherical photophore, which is almost wholly concealed in preserved specimens by the tentacular sheath. It is distinctly larger than even the most proximal of the organs just described, and judging from its outward appearance only I think it will prove to be entirely different in structure text fig. 11 (PI. VIII, fig. 4). V Fig. 12. Fig. 13. Fig. 14. Fig. 12. — Lampadioteuthis megaleia, camera drawing of gladius of type [416], dorsal aspect, x 3. Fig. 13. — Lampadioteuthis megaleia, ventral view of posterior extremity of gladius [416], X 18, camera sketch. Fig. 14. — Dorsal view of same, same scale. 56 PROCEEDINGS OF THE ACADEMY OF [Feb., In addition to the above are the following intrapallial luminous organs: 1. A roundish, swollen, brownish organ on each side of the cavity, a little behind the anus. 2. A very large, elongate- pyriform, bright, silvery organ at the base of each gill, near the middle of the cavity. 3. A bright silvery tubercle, larger than the anal organs, but very much smaller than the branchial, situated behind the viscera in the medio-ventral line nearly at the tip of the body (fig. 4). Gladius of simple Enoploteuthid structure, the rhachis free in front and broadest at the apex; thence tapering quite rapidly to a narrow point; wings thin and delicate, sharply angled in front of their middle, where each is about three times as wide as is the stem at the same level; they extend along the posterior two-thirds of the gladius, terminating around the point of the rhachis to form a slight posterior concavity, which is hardly spoon shaped, and is certainly not to be called a cone (figs. 12-14). Color in alcohol: mantle brownish white, dotted with pale chro- matophores; head and ventral aspect of the funnel darker, due to the more numerous dark chromatophores; eyes dark slate color, the lenses pearly white; arms and tentacles pale like the mantle. Type. — A rather poorly preserved female (?) [S. S. B. 416]. It is minus one tentacle, and a little macerated, but is in good enough condition to be described as above. Type Locality. — A beach on Sunday Island, where the single specimen was picked up by Mr. R. S. Bell in 1910. Measurements. mm. Total length 85 Length of mantle, dorsal 30 Tip of body to base of dorsal arms 39 Length of fins, extreme 17 Width of fin 14 Width across fins 30 Anterior width of mantle 15 Width of neck 7 Width across eyes 14 Length of head 10 Length of funnel 9 Length of right dorsal arm 17 Length of left dorsal arm 15 + Length of right second arm 13 + Length of left second arm 20 + Length of right third arm 16 + Length of left third arm 21 + Length of right ventral arm 22 Length of left ventral arm 22 Length of right tentacle 24 + Length of left tentacle 47 Length of club of left tentacle i 7 1916.] NATURAL SCIENCES OF PHILADELPHIA. 57 Remarks. — In spite of its wholly dissimilar gladius, this Little species reminds one more strongly of the two Lycoteuthid genera, Lycoteuthis and Nematolampas, than any other group, and this is probably due to the one fact, more than any other, thai the photo- genic complexes are so strikingly similar. That of the L. megaleia is accordingly summed up in the accompanying table, which also repeats the figures for L. diadema and N. regalis given in my earlier paper. L. Position of Photophores. diadema. < »m ryes: Ventral periphery 10 Lateral ( )n arms: Tips of dorsal arms Tips of dorso-lateral arms Ventrolateral arms ( hi tentacles: At base Along the stalk i Within pallia! chamber: Anal 2 Branchial 2 Abdominal1 4 Posterior extremity of body A. regalis. L. megaU ia. 10 6 2 2 2 62+ 4 2 8 2 2 4 2 2 2 1 Total 22 90+ 23 Although in each of the three species subocular, tentacular, and intrapallial organs are well developed, the table helps to emphasize differences which may be more important than the similarities. Then again, although I have not yet had opportunity to work out the histology of any of these structures in Lampadioteuthis, the external appearance of its tentacular photophores is not at all like the deep-seated organs of the Lycoteuthids, while the curious organs protruding from the base of the tentacles fail to resemble anything known to me. The single pair of enormous silvery photophores at the base of the gills is also distinctive as contrasted with the belt of five smaller organs possessed by the Lycoteuthid genera. The occasion is very tempting to add a little generalizing on the possible significance of such striking differences in the luminous pattern of cephalopods, especially since the constituent organs are so evidently polyphyletic in origin, but this had best be reserved for some future opportunity. 1 I have followed prevailing usage in classifying the series of three organs situated between the branchial pair in Lycoteuthis and Nematolampas as abdomi- nal, though it seems to me more rational to consider them in relation with the branchial organs than with the isolated posterior organ. 58 PROCEEDINGS OF THE ACADEMY OF [Feb., At any rate it is remarkable that the Sunday Island beaches should yield so extensive a series of bizarre types, and that with the exception of an ommastre- phid every squid collected there is the possessor of sys- tems of dermal organs which we must assume are photo- genic. %> Fig. 16. — Abralia astrolineata, lat- eral view of third hook from base of right t e n t a c 1 e club [408], X 30, camera drawing from mount in balsam. Fig. 15. — Abralia astrolineata, inner face of right ten- tacle club of tvpe [408], X 8, mainly a camera draw- ing. Family ENOPLOTEUTHIDiE. Genus ABRALIA Gray, 1849. 12. Abralia astrolineata Berry, 1914. 1914. Abralia astrolineata Berry, Trans. N. Z. Inst., 46, p. 145, pi. 10. An illustration of the ten- tacle club of this species is supplied in fig. 15, and of a hook therefrom in fig. 16. The statement on p. 145 of the original de- scription regarding the discrepancy in the num- ber of hooks on the two tentacle clubs of the type specimen is just reversed; the right club shows a fifth hook, the left, only the four large ones. Genus ABRALIOPSIS Joubin, 1896. 13. I Abraliopsis hoylei (Pfeffer, 1884). Pi. IX, fig. l. ?1884. EnophtevMs Hoylei Pfeffer, Ceph. Hamburg Mus., p. 17, fig. 22-22b. ?1896. Abraliopsis Hoylei Joubin, Bull. Soc. Sci. Ouest, 5, p. 33, etc. 1914. 1 Abraliopsis hoylei Berry, Trans. N. Z. Inst,, 46, p. 148. The specimen previously recorded [S. S. B. 400] is now figured on PI. IX, fig. 1. Abraliopsis C?) species. PI. IX, fig. 3. A small abralioid in the second collection offers some interesting peculiarities [S. S. B. 419], and I am not certain that it represents the same species as the preceding, though this will quite likely prove to be the case in the end. The only doubtful character is that each arm of the ventral pair appears to terminate in a slender filament instead of the usual beaded photophores, but these filaments are quite badly damaged in the specimen so that their exact nature is difficult to make out. The two rows of hooks on the ventral arms persist even onto the 1916.] NATURAL SCIENCES OF PHILADELPHIA. 59 4 Fig. IS. Muni ii, p- sis (?), late r a I V i e w of 1 a r g e hook from left tent a c 1 e club [419], X 30, cam- era drawing from mount in balsam. base of the filaments. Otherwise the specimen is a fairly typical Abraliopsis. The tentacle club much resembles that of the preceding, as de- scribed in my former paper. There are four large slender hooks in the ventral row, ami three (or four?) small ones in the dorsal row, the latter being succeeded proximally by two minute1 suckers. The distal portion of the club is occupied by the usual four rows of small suckers. I can make out only two suckers in the fixing ap- paratus (figs. 17, 18). The photogenic organs of the mantle are dis- tributed longitudinally in bands and lines. There is a conspicuous, clearly defined space free of photophores along the medio-ventral line. Bound- ing this on either side is a roughly triserial, band-like aggregation of photogenic organs, the central members of which tend to be larger than the lateral ones. This band is succeeded laterally by a single series of large and small photophores, more or less in alternation. A weak series of small organs is then followed by a very distinct single line of photophores, beyond which the organs are scattering and less regular. There are eight rows on the ventral aspect of the head, and the rudiments of perhaps as many on the funnel. Each central arm bears two rows. The two terminal photophores of the subocular group are con- spicuously larger than the three median ones, and of the latter the central organ is in its turn a little the largest. Fig. 17. — Abraliop- sis (?), inner face of righl tentacle club of young specimen [-419], X 15, free-hand sketch from mount in balsam. The arrangement and number of the distal suckers is only approxi- mated. Family OMMASTREPHID^E. Genus STHENOTEUTHIS Verrill, 1880. 14. Sthenoteuthis bartramii (Lesueur, 1821). 1X21. Loligo bartramii Lesueur, Jour. Acad. Nat. Sci. Phila., 2, p. 90, pi. 7 lssii. Sthenoteuthis Bartramii Verriil, Trans. Conn. Acad. Sci.j •">, p. 223. 1914. Sthenoteuthis bartramii Berry, Trans. X. Z. Inst.. 46, p. 148. 60 PROCEEDINGS OF THE ACADEMY OF [Feb., Genus SYMPLECTOTEUTHIS Pfeffer, 1900. [Symplectoteuthis oualaniensis (Lesson, 1830).] 1830. Loligo oualaniensis Lesson, Zool. Voy. Coquille, p. 240, pi. 1, fig. 2. 1900. Symplectoteuthis oualaniensis Pfeffer, Synops. (Egops. Ceph., p. 180. It now appears that my reference of certain of the Kermadec squids to this species was premature (see further note below), despite the fact that the islands lie well within its probable range. Genus EUCLEOTEUTHIS new genus.2 15. Eucleoteuthis species (young ?). 1914. Symplectoteuthis oualaniensis Berry, Trans. N. Z. Inst., 46, p. 148 (not Loligo oualaniensis Lesson, 1830). With the exception of the smallest, which may prove to be a genuine Symplectoteuthis, six quite small and rather poorly preserved Ommastrephids in the second collection sent me [S. S. B. 421] are apparently referable here. A reexamination of the similar specimens previously reported as S. oualaniensis, in the light of Sasaki's recent work (see appended footnote), shows that these likewise should be included in the newer genus. On all, with the single exception noted, the supposed photogenic tissue is evident as a pair of narrow whitish bands running along the ventral aspect of the body, much as in E. luminosa, though apparently not interrupted as in that species. In some of the specimens a pale oval macula may be made out near the mantle margin and just outside the line of the bands, but in no case have the maculae at the base of the ventral arms been identified. Numerous other differences in the outline of the photogenic organs, their distribution, the shape of the fins and body, and the proportions 2 In a recent paper ("On three interesting new cegopsids from the Bay of Sagami, " Jour. Coll. Agric, Tohoku Imper. Univ., Sapporo, v. 6, pp. 131-150, pi. 4), Madoka Sasaki describes and beautifully illustrates a very remarkable luminous squid from 700 fathoms, off Misaki, Japan, to which he attaches the name Symplectoteuthis luminosa. The creature is absolutely unique among described cephalopods in the fact that the principal photogenic organs, instead of being small spherical or ovoid cysts as in most cegopsids, take the form of a pair of narrow, zone-like bands, extending with but two interruptions along the ventral aspect, of the mantle for nearly its entire length. A pair of smaller maculse of similar character lie outside the terminal segments of the bands near the anterior margin, and a larger, ovoid, transverse organ appears at the base of each ventral arm. While the photogenic property of these curious structures does not appear to have been observed in the living animal, Sasaki infers such a function from their histology. It seems to me that these characters, coupled with several minor features, among which may be noted the unidentate horny rings of the larger tentacular suckers, are sufficient to quite preclude the proper reference of this species to Symplectoteuthis, a genus not known to possess any luminous properties, and in which the larger tentacular rings are multidentate. Having conveyed these opinions to Prof. Sasaki and ascertained that he has no present intention of altering his original disposition of the species, I now propose, with his courteous permission, the new genus Eucleoteuthis, with S. luminosa, Sasaki as type. 1910.] NATURAL SCIENCES OF PHILADELPHIA. til of the arms arc evident, so thai il seems possible thai an undescribed species of the genus is before us. The largest of the specimens, however, has a mantle length of only 41 mm., and since we know nothing of the younger stages of E. liuninosa, while the condition of our own material leaves much to be desired, a more detailed con- sideration of the speciology will best be deferred for the present. Family CftANCHIID^E. Genus MEGALOCRANCHIA Pfeffer, 1884. 16. Megalocranchia pardus new species. PI IX, fig. 2. Small: elongate cask-shaped. Mantle thin, smooth, saccular, membranous, much inflated; its greatest circumference near the middle, thence tapering slightly anteriorly and more so behind, where it comes to an acute point between the fins; maximum width of mantle distinctly less thai! half the length. Fins small, about three-tenths as long as the body; thin; semicircular; barely con- tinuous around the point of the mantle, which they exceed for about a third of their length ; posterior cleft deep and very narrow. Anterior margin of the mantle trilobate, being conspicuously indented (almost cleft) in the dorso-median line, as well as to a less degree at either side of the funnel, the clefts marking the three points where the mantle is firmly attached to the head and funnel. Head very short and broad, the length contained in the width (measured to include the eyes) nearly four times; width of head between the eyes less than the depth of the eyeball. Eyes very large and protruding; elevated on short, massive, slightly movable stalks; eyeball ovate in outline, projecting obliquely downward; lid opening of fair size, not puckered. The ventral surface of the eyeball is occupied by a large, semicircular, photogenic organ, which forms a bluntly conical projection toward one side; another smaller organ of crescentic outline lies within the concavity of the latter (fig. 19). Funnel large, thin-walled; broad at base, extending well past the base of the ventral arms, and entirely covering the ventral surface of the head between the eyes; aperture ample. Funnel organ well developed; the large hepatiform medio-dorsal organ bears on each lobe a finger-like papilla, which bends inward at the base so that it lies ahno-T transversely; the two -mailer lateral organs are roughly circular, and each has a slight indentation on the front inner margin (fig. 20 j. Arm- short, robust, the longest but little more than a quarter as 62 PKOCEEDINGS OF THE ACADEMY OF [Feb., long as the mantle; unequal, the order of length distinctly 3, 4, 2, 1. Umbrella wanting. Ventral arms with a frill-like keel on the outer angle; keel of third arms confined to distal portion, and obscure or o Fig. 19. Fig. 20. Fig. 19. — Megalocranchia pardus, part camera outline of right eye of type [415], ventral aspect, X 5J; phot.1, phot.2, photogenic organs. Fig.. 20. — Megalocranchia pardus, outline of funnel organ [415], much enlarged. wanting on the two dorsal pairs. All the arms have a delicate trabeculate swimming membrane on either margin of the sucker- bearing area, but this attains much its best development on the third pair. Suckers biserial, closely placed in each row, but the series slightly separated from one another on all but the ventral arms, where they are relatively close together; number of suckers varying from 14 pairs on one of the dorsal arms to 16| pairs on the ventral arms. Sucker apertures wide, the horny rings weakly den- tate on the upper semicircumference and with only rudiments of teeth below; even at their best, the denticles appear rather as strong crenulations than teeth; about 18 were counted on a ring from one of the larger suckers of the right third arm (fig. 21). Tentacles short, stout, the longer about a third again as long as the longest arms, or about two-fifths the length of the mantle; larger and thicker than any of the arms. Clubs slightly expanded; armed with four crowded rows of suckers, largest near the middle, but diminishing in size both distally and proximally, where they continue down the stalk a little more than half way to the base. A horny ring from one of the largest suckers on the club shows about 26 conical, round-pointed, sometimes curved teeth, which are smallest on the inferior margin (fig. 22). Color of preserved specimen brownish cream; chromatophores brown; eyes bluish black; subocular photophores bronze, sur- rounded by a bluish ring. Chromatophores large, scattered, elongate 1916.1 NATURAL SCIENCES OF PHILADELPHIA. 63 oval in outline, conspicuously spotting the entire mantle, though somewhat paler ventrally than dorsally; an underlying bilateral arrangement is evident, particularly in the case of the larger chro- Fig. 21. Fig. 22. Fig. 21. — Megalocranchia pardus, sucker from right third arm of type [41")], X 28, camera outline from mount in balsam. Fig. 22. — Megalocranchia pardus, one of the larger suckers from the right tentacle club of the type [415], X 60, camera drawing from a mount in balsam. matophores ; there also seems to be a certain tendency to an arrange- ment in zigzag lines in a transverse direction, most apparent on the ventral aspect. There is a single series of chromatophores along the medio-dorsal line, exactly overlying the gladius, which appears as a translucent line beneath; 21 of the organs can be counted to the point where the translucent area expands. Type. — The unique type [S. S. B. 415] is in an excellent state of preservation. Type Locality. — A beach on Sunday Island, Kermadec Group (R. S. Bell, 1910). Measurements. nun. Total length 75 Length of mantle, dorsal 50 Extreme length of fins 14 Maximum width of mantle 22 Width across fins 13 Width across eyes 15 Length of head 4 Length of funnel '. 13 Length of right dorsal arm 7 Length of left dorsal arm 7.5 Length of right second arm 9 Length of left second arm 9 Length of right third arm 13 Length of left third arm 13 64 PROCEEDINGS OF THE ACADEMY OF [Feb., mm. Length of right ventral arm 10 Length of left ventral arm 10 Length of right tentacle 21 Length of right tentacle club 5 Length of left tentacle 16 Length of left tentacle club 5 Remarks. — The elucidation of the compact little group of squids, of Avhich M. pardus is a typical example, has been for me one of the most difficult taxonomic problems encountered in the study of the cephalopoda. All the species are represented in collections by such scanty material, are so similar to one another, and the characters which separate them appear of such a trivial nature, that the de- scribed forms are in sore need of careful checking up by someone having access to the type specimens of the older species. At the same time, the species are quite well set apart from other Cran- chiids, so that a synopsis of the genus would include only the following :3 1. Megalocranchia maxima Pfeffer 1884. 2. Taonius abyssicola Goodrich 1896. 3. Helicocranchia fisheri Berry 1909. 4. Desmoteuthis pelludda Chun 1910. 5. Megalocranchia pardus Berry 1915. The second of these is little known, is unique in several respects, and may eventually prove to belong elsewhere. On the other hand, the first, third, and fourth are apparently not strongly differentiated, and it is with these that the present species requires special com- parison to justify its separate recognition. The specimen most certainly represents a species different from M. fisheri, the only other Megalocranchia with which I have had opportunity for com- paring it, but to Chun's pelludda it seems exceedingly close. The description and figures of the latter are not now available to me, but from my notes made therefrom a few years ago, I feel that the differences, though so slight, are nevertheless too great for uniting the species. In reaching this conclusion I place reliance upon the almost stalked eyes of M. pardus, the immense development of the funnel, and the denticulation of the horny rings. 3 The species described as Desmoteuthis tenera Verrill {Trans. Conn. Acad. Sri., 5, p. 412) now seems to me to be improperly grouped with the cask-shaped, round-finned forms cited above. As I have shown in a former paper (Science, X. S., 36, pp. 643-646), the genus Desmoteuthis falls into the absolute synonymy of Taonius, so can no longer be used here. I would therefore propose for the reception of D. tenera the new genus Verrilliteuthis. To name the group for the master of American teuthologists requires no excuse save posibly an apology for the resulting barbarism. 1910. J \ \TIRAL SClKNt KS OF PHILADELPHIA. 65 Order TETRABRANCHIATA. Suborder NAUTILOIDEA. Family NAUTILID^. Genus NAUTILUS I.inne, 1758. IT. Nautilus pompilius Linn6, L758. L758. Nautilus Pompilius Linne, Syst. Nat., ed. X, No. 283, p. 709. 1910. \autilux pompilius [redale, Proc. Malac. Soc, (.t, p. 72. 1915. Nautilus pompilius Oliver, Trans. N. Z. Inst., 17, p. 558. Oliver reports a broken shell washed up on the beach at Sunday Island. 18. Nautilus macromphalus Sowerby, 1848. is is. Nautilus macromphalus Sowerby, Thes. Conch., p. 164, pi. 98, figs. 4, 5. 1910. Nautilus macromphalus [redale, Proc. Malac. Soc., 9, p. 72. 1915. Nautilus macromphalus Oliver, Trans. N. Z. Inst., 47, p. 558. Oliver reports a broken shell washed up on the beach at Sunday Island. Bibliography of Kermadec Island Cephalopods. Berry, S. Stillman. 1913. Nematolampas, a remarkable new cephalopod from the South Pacific. Biological Bulletin, Vol. 25, pp. 208-212, 1 text fig., August, 1913. (Nematolampas regalis, new genus and species.) 1914. Notes on a collection of cephalopods from the Kermadec Islands. Transactions New Zealand Institute, Vol. 46, pp. 134-149, text figs. 1-4, pis. 7-10. June, 1914. (Gives notes on 9 species, including Polypus oliveri, P. kermadecensis, and Abralia astrolineata, new species.) Hoyle, William E. 1885. Diagnoses of new species of Cephalopoda collected during the cruise of H. M. S. "Challenger."— Part I. The Octopoda. Annals and Magazine of Natural History (5), Vol. 15, pp. 222-236, March, 1885. (Antphitn his pelagicus, new genus and species.) 1885a. Brief notice of the •'Challenger" Cephalopoda. Narrative Challenger Expedition, Vol. 1, pp. 269-274, [1-7], figs. 106-109, 1885. (Figure of A mphitrelus p< lagicus. ) 1885b. Preliminary report on the Cephalopoda collected by H. M. S. "Challenger." Part' I. The Octopoda. Proceedings Royal Society of Edinburgh, Vol. 13, pp. 94-114, cuts, August, 1885. 1886. Report on the Cephalopoda collected by H. M. S. "Challenger" during the years 1873-1876. Voyage of the Challenger, Vol. 16, pp. i-vi, 1-246, 9 figs, in text, pis. 1-33, 1886. (Three species, Cirroteuthis mt angt nsis, Amphitretus pelagicus, and Eledone verrucosa, reported from near the Kermadecs.) [redale, Tom. 1910. On marine Mollusca from the Kermadec Islands and on the Sinusigera apex. Proceedings Malacological Society, London. Vol. 9, pp. 68-79, March 1910. (List reprinted in Proc. N. Z. [nst., 1910, p. 57, f«l< Oliver: five species of shell-bearing cephalopods listed.. Oliver, W. R. B. 1911. Notes on reptiles and mammals in the Kermadec [slands. Transactions New Zealand Institute, Vol. 43, 1910. pp. 535-539, July, 1911. (Mentions a fragment of an undetermined giant squid c up on the beach, p. 536. 1915. The Mollusca of the Kermadec Islands. Transactions New Zealand Institute, Vol. 47, pp. 509-568, pis. 9-12, July, 1915. Gives a re'sume' of previous records, the cephalopods on pp. .V>s-560.) 66 PROCEEDINGS OF THE ACADEMY OF [Feb., Explanation of Plates VI, VII, VIII, IX. Plate VI. — Fig. 1. — Argonauta species, female. Mantle laid open to show the male hectocotylus in situ within the cavity [S. S. B. 403] (X 1\). Fig. 2. — Polypus oliveri Berry, female. Dorsal aspect of type [S. S. B. 405], about natural size. Plate VII. — Fig. 1. — Nematolampas regalis Berry. Distal portion of right third arm of type [S. S. B. 409], photographed by reflected light from a mount in balsam (X 2). Fig. 2. — Nematolampas regalis. Proximal portion of same preparation (X 8J). Fig. 3. — Nematolampas regalis. Median portion of the terminal filament of the right third arm (X 8|), photographed from the same preparation. Plate VIII. — Fig. 1. — Lampadioteuthis megaleia Berry. Dorsal aspect of type [S. S.B. 416] (X U). Fig. 2. — Ventral aspect of same, same scale. Fig. 3. — Lampadioteuthis megaleia. Tentacle club of type, from mount in balsam (X 7). Fig. 4. — Lampadioteuthis megaleia. Base of tentacle from same preparation (X 7), showing the two basal photophores. Fig. 5. — Nematolampas regalis Berry. Subocular photophores from right eye of paratype [S. S. B. 410] (X 7); photograph of inner surface from mount in balsam. Plate IX. — Fig. l.—Abraliopsis hoylei Pfeffer ?. Ventral aspect of immature female [S. S. B. 400] (X 2). Fig. 2. — Megalocranchia pardus Berry. Ventral aspect of type [S. S. B. 415] (X2). Fig. 3. — Abraliopsis (?), species. Ventral integument of very young speci- men [S. S. B. 419], showing the distribution of the photogenic organs; photographed by reflected light from a mount in balsam, stained with Delafield's hematoxylin (X 6). Note. — I am indebted to my friends, Edward A. Cornwall and Leroy Childs, for most of the photographs used in the accompanying plates. Thanks are like- wise due to both Messrs. Iredale and Oliver for many incidental favors. PROC. ACAD. NAT. SCI. PHILA. 1910. PLATE VI. . BERRY: CEPHALOPODA OF THE KERMADEC ISLANDS. PROC. ACAD. NAT. SCI. PHlLA. 19i<3. PLATE Vlt. e "i v s . 1 BERRY: CEPHALOPODA OF THE KERMADEC ISLANDS PPOC. ACAD. NAT. SCI. PHlLA. 19 Ki. PLATE VIII. 1 r g^ BERRY: CEPHALOPODA OF THE KERMADEC ISLANDS. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE IX. • • • , ............ . . . ? • • ki **•• v • • • * * •. • '\ • * , , ••• .•*•.-.• . # • • ; • • . * • 'v. .> . • BERRY: CEPHALOPODA OF THE KERMADEC ISLANDS. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 67 March 21. The President, Samuel G. Dixon, M.D., LL.D., in the chair. Seventy-eight persons present. The death of John Thomson, A.M., a member, February 23, 1916, was announced. The Publication Committee reported the reception of papers under the following titles as contributions to the Proceedings: " The Germ Layers of Bdellodrilus," by George W. Tannreuther (February 23). 'Some Bees from Australia, Tasmania, and the New Hebrides," by T. D. A. Cockerell (March 6). "A New Species of Onchidiopsis from Bering Sea," by William H. Dall (March 16). " Evidence of a Saturation Point in Evolution," by Walter Sonne- berg (March 20) Dr. Edwin G. Conklin made an illustrated communication on his impressions and experiences during a trip to New Zealand and Australia. The following was ordered to be printed: 68 PROCEEDINGS OF THE ACADEMY OF [March, revision of cayuga lake spiders, by nathan banks. In The Proceedings of the Academy of Natural Sciences of Philadelphia for 1892, pp. 11-81, 1 gave a list of spiders collected in the vicinity of Ithaca, N. Y. It was the first important local list published in this country. Twenty-five years have passed since its preparation, and twenty-five years in any department of natural history produces many changes. A number of the new species have proved to be synonyms, a number have been redescribed by others since, and many species have had either their generic or specific name, or even both, changed since then. It is the purpose of this paper to briefly review these changes and to give a few notes and figures of such forms as seem to have escaped collection in recent years. The arrangement is the same as in the original work. Species not mentioned are unchanged. DRASSID^E. Micaria formicoides. This is a dark specimen of M. longipes, with the femora darker than usual. Prosthesima rufula. Goes in Zelotes. Prosthesima frigida. Goes in genus Zelotes. Prosthesima immaculata = Zelotes rufula Bks. Prosthesima blanda. Belongs to genus Zelotes. Prosthesima atra. Belongs in Zelotes. Prosthesima depressa. Belongs in Zelotes. Prosthesima ecclesiastica. Belongs in Herpyllus. 1916.] NATURAL SCIENCES OF PHILADELPHIA. ' 69 Prosthesima minima = Zelotes blanda Bks. An immature specimen. Poecilochroa bilineata. Belongs iii Cesonia. Gnaphosa brumahs. This is immature and evidently G. conspersa Thor. Gnaphosa humilis = Gnaphosa brumalis Thor. No1 quite mature. Drassus saccatus. Now known as D. neglectus Keys. Drassus humilis = D. neglectus Keys. CLUBIONID^E. Thargalia agilis = Castianeira cingulata Koch. Thargalia perplexa = Castianeira longipalpis Htz. Thargalia fallax = Castianeira descripta Htz. Thargalia bivittata. Is known as Castianeira cingulata Koch. Thargalia crocata. Is Castianeira descripta; the true T. crocata is a southern form. Clubiona obesa. This is C. crassipalpis Keys., but I believe also Hentz's species. Clubiona crassipalpis. The female whose vulva is figured is C. canadensis Emer. Clubiona canadensis. These are young of C. obesa Htz. Clubiona pygmaea. Appears to be the female of C. minuta Emer., this name, however, is preoccupied by Xicolet for a Chilian species. Clubiona rubra = C abbottii. Clubiona lenta. Related to C. pygmaza, but I think distinct, the head and mandibles are not as dark as in that species; the eye region is broad as in C. latifrons Emer. I have seen another specimen from Washington, D. C, but do not yet know the male. Clubiona americana = C. riparia Koch. C. americana given to replace the preoccupied C. ornata Emer. Clubiona excepta = C. pallens Htz. 70 PROCEEDINGS OF THE ACADEMY OF [March , Anyphsena incerta. Now known as Gayenna celer Hte. Anyphsena saltabunda. Belongs to Gayenna. Phrurolithus palustris = P. alarius Hentz (non Emer.). Phrurolithus alarius (Bks. det.) = P. borealis Emer. Agrceca ornata. A. repens Emer. is a synonym. AGALENID^E. Coelotes medioinalis. Now placed in genus Coras. Coelotes fidelis. This is related to C. urbanus Keys., but in male palpi the patella is not so prolonged at tip, and with two (instead of one) teeth; a figure is given (PI. X, fig. 8). Coelotes longitarsus. Is now called C. calcaratus Keys. Coelotes altilis. These large females may be the females of C. hybridus Emer., otherwise they are new; a new figure of the epigynum is given (PI. XI, fig. 24). Coelotes lineatus. Based on an immature male, and doubtless belongs to one of the other forms, quite probably C. calcaratus Keys. Coelotes gnavus. This may be the same as the female C. longitarsus Emer., but his male is another form (C. calcaratus); it, however, is much larger than Cicurinia arcuata, more heavily marked, more geniculate mandibles; the epigynum is figured (PI. XI, fig. 22). Cicurina complicata. Is C. arcuata Keys., a large female. Cicurina creber = C. brevis Emer. The latter was described as a Tegenaria. Cicurina placida. Related to C. brevis, but a size larger; the posterior middle portion of the vulva is more narrow than in C. brevis; a figure is given (PL XI, fig. 26). Hahnia bimaoulata = H. agilis Keys. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 71 DICTYNID^J. Dictyna frondea. An immature female, probably of D. foliaced. Diotyna oruciata? One female, does not now show any differences in markings from D. foliacca, but the vulvar openings are very much farther apart. Diotyna minuta. Two males, scarcely two millimeters long, belong here. Dictyna foxii. Belongs in genus Prodalia. Dictyna volupis = D. foliacea Hentz. Dictyna maxima. Based on one female, whose large size and dorsal markings do not fit any other described form. Later I took males that appear to belong here; they are three millimeters long, and the tibia of palpus is long, curved, and with a very short projection at base as in figure (PLX, fig. 15). Dictyna decorata. Only females, which, although more strongly marked than usual, are probably D. foliacea (D. volupis); at least I have seen no males that might indicate another species. Dictyna dubia = D. frondea Emer. Amaurobius silvestris. I consider it is A. bennetti Blk. THERIDIIDJE. Mimetus epeiroides = M. interfector Htz. Steatoda marmorata. Belongs in Enoplognatha. Steatoda guttata. Belongs in Crustulina. Steatoda triangulosa. Belongs in Teutana. Pholcomma hirsuta. Belongs to Ancylorrhanis. Ceratinella similis = C. emertoni Cb. Ceratinella atriceps. The only specimen I now have is the Exechophysis plumalis Crosby. 72 PROCEEDINGS OF THE ACADEMY OF [March, Ceratinella moesta. This belongs to the restricted genus Lophocarenum. Ceratinella placida. This is related to C. emertoni, but I believe distinct, the tibial process is much more slender, the style longer. I give figures of other views of the palpus (PI. X, figs. 6, 11). Ceratinella formosa. This is peculiar in the position of the shield, and for it I later made the genus Idionella; it belongs to the true Theridiidae. Ceratinella annulipes. I made a new genus, Cerati?iops, for this, it belongs to the true Theridiidae. I have seen it also from Poughkeepsie, N. Y. Ceratinopsis interpres. Now placed in a separate genus, Notionella. Ceratinopsis nigriceps. Not nigriceps, but the species Emerton later described as C. auriculatus. Ceratinopsis frontatus. Belongs to the genus Maso, and a description and figures are given by Emerton under name of Caseola herbicola. Grammonota ornata. Probably correct, but the abdomen is shrunken now, and does not show the markings. Grammonota venusta. Probably the female of Tmeticus tridentatus, but the epigynum (PI. XI, fig. 18) shows the ridges more divaricate than usual; possibly the female of some allied species. Spiropalpus spiralis. Now considered to belong to genus Cornicularia. Cornicularia communis. Probably correct, but the epigynum does not project quite as far as in other specimens. Cornicularia pallida. An immature female, which agrees in markings and structure with adults from other localities. Cornicularia formosa = Gonatium rubena Blk. Cornicularia placida. A female Cornicularia, and probably the female of some described species; the figure I gave of the epigynum is not broad enough, 19K).J NATURAL SCIEN< ES OF PHILADELPHIA. 73 I give a new one (PI. XI, fig. 19). The posterior median eyes are scarcely their diameter apart, and as close to the plainly larger posterior side eye-. Lophomma cristata. A female, may belong to this species or to a Lophocarenum; the vulva (PI. XI, fig. 29) is a broad opening, some distance in front of the rima. Sternum triangular, the hind coxse separated by less than their diameter; tarsi 1 a little shorter than metatarsi; P. M. E. scarcely diameter apart, much further from the subequal P. S. E. Lophocarenum castaneum. Is a Diplocephalus, I think; the head shows no trace of elevation in these females ; the sternum is broad, and the hind coxae separated by more than width, tarsi I much shorter than metatarsi I; eyes of posterior row subequal, and less than diameter apart (PL XI, fig. 28). Lophocarenum tristis. Female of some species probably known in male, and may be L. castaneum: the eyes of posterior row are subequal, the P. M. E. about diameter apart, and a little further from the S. E.; sternum as broad as long, hind coxae separated by less than their diameter. Lophocarenum florens. Belongs to Hypselistes. Lophocarenum unimaculatum. Evidently related to L. florens, which is now placed in Hypselistes; I have seen no further specimens, but the peculiar marking will distinguish it. Lophocarenum miniatum. This is a Cornicularia and apparently a dark female of < '. di recta Cb. (PI. XI, fig. 23). Lophocarenum venustum = Gonalium rubens Blk. Lophocarenum montiferum. Determination correct; it now goes in Diplocephalus. Lophocarenum parvum. Is L. erigonoides Emer. ; as in L. formosum the tibial process has a deep incision near base not shown in Emerton's figures; it is also probably Erigom percisa Keys; it belongs to genus Diplocephalus. Lophocarenum exiguum. Is a Diplocephalus, and Emerton has given a description and figures in 1911 from a New England specimen. Lophocarenum spiniferum. Determination correct, but now placed in Diplocephalus. 74 PROCEEDINGS OF THE ACADEMY OF [March, Lophocarenum crenatum. Determination correct, it now goes in Diplocephalus. Lophocarenum crenatoideum. Is Diplocephalus crenatum, a d" not fully colored, and apparently longer cephalothorax. Lophocarenum erigonoides. Is a Diplocephalus; the male is an immature specimen, and the female is also probably not mature or else belongs to a different species. Lophocarenum formosum. This is L. erigonoides, I believe, although the palpal organ does not fit Emerton's figure in some parts. I think it is also the Erigone percisa of Keyserling, his figure of palpus is not quite right, but the epigynum is the same as I have figured for formosum (PI. X, fig. 4). Lophocarenum arvensis = Comicularia communis Emer. Lophocarenum longior. This is apparently a female Comicularia and probably of C. directa; at least I find no differences. Tmeticus unicorn. This will go in the genus Delorrhipis, but is very different from D. monoceros. A new description is given by Crosby. Tmeticus trilobatus. Goes in Gonglydiuni. Tmeticus obscurus. The tarsi of palpi gone, but from the tibiae it is quite probably T. phlmosus, which has since been taken near Ithaca. Tmeticus flaveolus. Unchanged; a description, with figures, is given by Emerton in 1909 from New England material. Tmeticus luxuosus. This belongs to Ceratinopsis and is the species described by Emer- ton in 1909 as C. alternatus. Tmeticus rusticus. I cannot identify with any described form ; I figure the long slender hook (PL X, fig. 10). Tmeticus pallidus. Unchanged, but goes in Gonglylidium. Tmeticus humilis = T. plumosus Emer. Now in the genus Gonglyidium. 1910.] NATURAL SCIENCES OF PHILADELPHIA. 75 TmeticuS moestUS = Gonglydium trilobatus Enicr. Tmeticus debilis. Unchanged; a description, with figures, is given by Emerton in 1909 from New England specimens. Tmeticus palustris = Gongylidium trilobatus Em. Tmeticus distinctus. I give a new figure of the epigynum (PI. XI, fig. 27); this shows a great resemblance to that of T. bidentatum Emer. which Emerton figures in 1909, and probably it is that species. Crosby gives some notes under the genus Tapinocyba. Tmeticus maculatus. Crosby has given some notes on it; probably the female of T. probatus; Emerton in 1909 gave a new figure of the epigynum which shows two lobes as in my figure. Tmeticus minutus. Crosby has given notes under the genus Gongylidiellum, a new figure of palpus is here given (PI. X, fig. 5). Tmeticus gnavus. Xew figures are given of the palpus (PI. X, figs. 3, 7); it is in the trilobatus group. Erigone longipalpis. More properly placed under E. persimilis Cb. Linyphia communis. I place this in Frontinella Cambr. Linyphia clathrata. This belongs to Neriene. Linyphia phrygiana var. annulipes. This variation in color is hardly worthy of a name. Linyphia variabilis. Belongs to Neriene. Linyphia conferta. Belongs to Neriene, Emerton considers the true conferta to be a southern form, and has described this as Linyphia maculata. Stemonyphantes bucculentus. Is the type of the genus Bolyphantes. Diplostyla pallida. This is a very pale specimen of nigrina. 76 PROCEEDINGS OF THE ACADEMY OF [March, Diplostyla alboventris. Unchanged; I figure the hook (PI. XI, fig. 21). Helophora insignis. Is considered to be a true Linyphia. Bathyphantes minuta. Belongs to Lepthyphantes. Bathyphantes nebulosa. Belongs to Lepthyphantes. Bathyphantes alpina. These are B. zebra, not so strongly colored as normal. Bathyphantes subalpina. Determination correct. Bathyphantes decorata. Very similar to B. zebra, but smaller, paler, and few if any silvery spots on the basal part of the dorsum of abdomen; the male palpus differs a little in the hook and in shape of the outer process which is long and pointed, and with a comb of long hairs above; a new figure is given (PL X, fig. 13). Bathyphantes argenteomaculata. These are B. zebra, not quite mature. Bathyphantes pallida. I cannot place these females; the prominent epigynum is even more protuberant than figured, possibly near to Tmeticus brunneus, but more than one-half smaller. Bathyphantes sabulosa. These are B. zebra. Bathyphantes umbratilis. Not quite mature female, possibly of Microneta olivacea since the palpi are enlarged. Bathyphantes complicata. Not this species, but from the male palpus I cannot place it with any described form, though it may be near Microneta longitubus. Bathyphantes unimaculata. Related to B. complicata; the palpus has a broad band obliquely across as in that species, but the tube is slender and sharp. Bathyphantes inornata. The palpus figured is B. angulata, but others in lot are B. uni- maculata. 19K1.1 NATURAL SCIENCES OF PHILADELPHIA. 77 Bathyphantes tristis. The median rounded part of the epigynum shows two cavities on the posterior edge. Probably the female of some described Micro- neta or Bathyphantes (PI. XI, fig. 17). Microneta latens = !/• quinquedentata Emer. Microneta palustris. This is a Pedanostethus; I give a figure of the other side of palpus (PI. XI. fig. 16) ; this docs not seem to agree with any described species; the epigynum of the females (PL XI, fig. '25) (collected after descrip- tion was made) agrees very well with one of Emerton's figures of riparius. Microneta luteola. I give a figure of other side of palpus (PI. X, fig. 2), it were prob- ably better in Bathyphantes, and related to B.calcaratus Emer.; there are, however, no marks on the basal part of the abdomen, but several taint, whitish, transverse spots toward tip. Microneta flaveola. This is probably only a form of Bathyphantes angulata; the hook, however, is not as heavy as in that species, and there are several structures not shown on Emerton's figure. In the original figure a part of the median bilobed process was mistaken for a continuation of the upper limb of the hook (PL X, fig. 9). Microneta complicata. A figure is given of the back of the palpus (PL X, fig. 14); it is related probably to Bathyphantes intricata Emer., but distinct. Microneta minutissima. The size given was a little too small; it is about 1.1 mm. long (PL X, fig. 12). Microneta frontata. This is a Pedanostethus, and it agrees well in size, color, and epigy- num with what Emerton figures as his female P. pumilus, and I believe it is the same. Microneta gigantea. This appears to be Tmeticus brunneus Emer., the female of which was figured in 1909. The low, broad head and small A. M. E. would seem to indicate a special genu-. Microneta distincta. Perhaps better placed in Tmeticus. I give new figures (PL X, fig. 1) of the palpus; apparently not otherwise known. 78 PROCEEDINGS OF THE ACADEMY OF [March, EPEIRIDiE. Epeira cinerea = E. cavatica Keys. Epeira sclopetaria. Is same as E. sericata CI. which has page precedence. Epeira patagiata. Is same as E. ocellata CI. which has page precedence. Epeira strix. Has older name in E. foliata Koch. Epeira marmorea. Is the same as E. gigas Leach. Epeira insularis = E. gigas Leach. Epeira labyrinthea. Is considered to form a separate genus, Metepeira. Epeira placida. Belongs to genus Mangora. Epeira gibberosa. Belongs to genus Mangora. Epeira parvula = E. prompta Htz. Epeira stellata. Belongs in genus Plectana. Epeira ithaca. Is young of E. gigas Leach. Singa maculata. Name preoccupied, changed to S. truncata. Acrosoma rugosa = A. gracilis Walck. Argiope riparia = A. aurantia Lucas. Argiope transversa = A. trifasciata. Argyroepeira hortorum. Goes in genus Leucauge. TBTRAGNATHID^E. Tetragnatha vermiformis. In genus Eugnatha. Tetragnatha straminea. In genus Eugnatha. Tetragnatha caudata. Belongs in genus Eucta. Tetragnatha pallida. The specific name was preoccupied and changed by F. 0. P. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 79 Cambridge to pallescens. McCook has published a description; it goes in genus Eugnatha. Pachygnatha brevis. This is the real P. xanthostoma of Koch. Pachygnatha xanthostoma. This is the P. xanthostoma of McCook, but not of Koch; I propose to call it P. mccooki n.n. THOMISID^J. Xysticus stomachosus. Probably is X. ferox Htz. Xysticus feroculus = X. trigultatus Keys. Xysticus distinctus. This is apparently a specimen of X. stomachosus, recently trans- formed, in which the parts of the vulva show more distinctly than usual. Xysticus brunneus. This is the female of the true X. limbatus Keys. Xysticus crudelis = X. brunneus Bks. Xysticus transversus = X. stomachosus Keys. Xysticus lentus. This is the male of gulosus, previously not described. Xysticus nervosus. Unchanged; Emerton has given additional description and figures. Xysticus formosus- Unchanged, Emerton has given additional description and figures. Xysticus limbatus. Unchanged; it is a male of the true limbatus of Keyserling; not the limbatus of Emerton. Xysticus quadrilineatus = X. luctans Koch. Xysticus maculatus. Immature specimens, probably of X. stomachosus. Oxyptila georgiana = O. americana Bks. Oxyptila conspurcata. Unchanged; the 0. georgiana Keys, is the same species. Misumena rosea = Misumessus asperatus Htz. Misumena georgiana. I consider this to be the M. celer of Hentz. Misumena foliata = Misumessus asperatus Htz. 80 PROCEEDINGS OF THE ACADEMY OF [March, Misumena placida = Misumessus asperatus Htz. Philodromus vulgaris = P. pernix Blk. Philodromus prselustris Immature specimens of P. pernix Blk. Philodromus signifer. This, I believe, is the same as Ph. expositus of Keyserling (Ph. maculatus Blk.). Philodromus gracilis = Ph. pernix Blk. Philodromus unicolor = P. infuscatus Keys. Philodromus ornatus. Unchanged, Emerton has given a description and figures. Philodromus placidus. Unchanged; related to Ph. ornatus. Philodromus minutus. In well-marked specimens the legs are lined behind with black, the hind pair on front edge; I think that Ph. brevis Emer. is the male of this species; I have taken P. brevis at Ithaca. Philodromus minusculus. This closely resembles Ph. ornatus and it is probably that species; but its very much smaller size induced me to describe it; I have no other specimens as small. Philodromus exilis. This differs from the other small species of the genus in elongate abdomen; I believe the Ph. bidentatus Emer. is the male of this species. Philodromus rufus. Unchanged; Emerton gives figures and description under name of P. pictus. Philodromus laticeps. This immature male is Ph. pernix Blk. Philodromus aureolus. These are young specimens; in appearance they agree with Ph. lineatus. Emer., but one cannot be sure without adults. LYCOSID./E Lycosa nidicola = L. helluo Walck. Lycosa communis = L. avida Walck. Lycosa nigroventris. This is the male of L. frondicola. Lycosa similis = L. pratensis Emer. L916.] NATURAL SCIENCES OF PHILADELPHIA. 81 Lycosa rufiventris = /-. avara Kej - Lycosa humilis Schvsogyna gracilis Bks. Lycosa polita = Trochosa rubicunda Keys. Lycosa scutulata = L. rabida Walck. Lycosa vulpina = L. aspersa Htz. Lycosa crudelis = L. hdluo Walck. Lycosa immaculata = L. aspersa Htz. Lycosa exitiosa = L. aspersa Htz. cf- Lycosa oblonga = L aspersa Htz. Pardosa pallida. Name preoccupied and changed by Chamberlin to P. emertoni, bu1 I think it is P. distincta Blackw. Pardosa annulata. Is the female of P. minima Keys. Pardosa venusta = P. lapidicina Emw. Pardosa brunnea. Is P. glacialis Thor., and I think is P. modica Blackw. Pardosa gracilis. This is a Schizogyna, Lycosa relucens of Montgomery is the same form. Pardosa albopatella. Now known as P. minima Keys. Pardosa nigropalpis. Is P. flavipes Keys., and I think also P. canadensis Blackw. Pardosa montana = P. xerampelina Keys. Pardosa moesta. Chamberlin has given a new description and figure in his Revision of the Lycosidae. P. diffusa Em. is apparently the male of this species. Pardosa obsoleta = P- lapidicina Enier. Pirata montana. These females are not montana, but agree with aspirans Chamber. Pirata montanoides. Female runs out to P. aspirans, and probably is that species, but the figure of the vulva of that species shows the tip flattened out instead of bent down as normally the case, so it appears different. P. humicoliis is also close, the darker colors are of no specific value. at least not in allied P. minuta (PI. XI, fig. 20). Pirata agilis = montana Emer. 6 82 PROCEEDINGS OF THE ACADEMY OF [March, Pirata exigua = P- minuta Emcr. A very dark female, with black-banded legs and dark sternum; the vulva seems to be the same as in the pale form. Pirata minuta. A pale female with wholly pale, unbanded legs, and pale sternum. Aulonia aurantia. This is an immature Pardosa. Ocyale undata. Goes in the genus Pisaurina. Dolomedes sexpunctatus. Young specimens of D. tenebrosus. Dolomedes scriptus. Young specimens of D. tenebrosus. ATTIDiE. Phidippus mystaceus = P. electus Koch, not Hcntz's myslaceus. Phidippus albomaculatus = P- electus Koch. Phidippus rauterbergi = P. audax Htz. Phidippus mccooki = P. castrensis Koch. Phidippus tripunctatus = P. audax Htz. Phileeus princeps = Phidippus pvinami Peck. Philaeus militaris. Belongs to genus Dendryphantes. Dendryphantes capitatus = D. ocfavus Htz. Dendryphantes elegans. Belongs to genus Tutelina. Dendryphantes flavus. Specimens immature, but agree in markings with adults. Dendryphantes insignis = D. octavus Htz. Dendryphantes ornatus = D. octavus Htz. Dendryphantes exiguus = D. flavipedes Peck. Specimens lack the dark mark on femora, normally present; the female had not been described. Icius formosus. Belongs to Marpissa, and is possibly the unknown male of M. binus. Icius albovittatus = Dendryphantes militaris. Icius palmarum. Is now in the genus Wala. Icius mitratus. » Also belongs to Wala. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 83 Icius harti. Is /. fuliginous Blackw. Icius moestUS ^ l)i nilii/iihunles mililari. Htz. Icius elegans. A young specimen, probably of Wala. Eris octavus = Dendryphantes octants Htz. Eris nervosus. Belongs in the genus Zygoballus. Hasarius hoyi = Pellenes falcata Clerck. Habrocestum latens = Pellenes falcata CI. Habrocestum coecatum = Pellenes boreal is Bks. Habrocestum peregrinum. (iocs in the genus Pellenes. Habrocestum splendens = Pellenes decorus Blackw. Saitis pulex. Is kept now in Habrocestum. Astia vittata. Now known as Mcevia niger. Epiblemum scenicum. Belongs in genus Salticus. Admestina wheeleri. I have elsewhere1 shown this to be tibialis of Koch. Marptusa familiaris. I have elsewhere1 shown this to be Marpissa undata De (leer. Marptusa rupicola. I believe it distinct from familiaris (undata); it also occurs at Great Falls, Va., under pieces of rocks. Synageles picata. Is now placed in genus Peckhamia. Explanation of Plates X and XL Plate X. — Fig. 1. — Micronela diMncta, palpus. Fig. 2. — Mi* rum la luteola, palpus. Fig. 3. — Tmeticus gnavus, palpus. Fig. 1. Lophocarenum formosum, palpus. Fig. 5. -Tmeticus mi mil us, palpus. Fig. <). — Ceratinella placida, top of palpus. Fig. 7. — Tmeticus gnavus, palpus. Fig. 8. Coelotes fidelis, tibia and patella. Fig. '.'. Microneta flaveola, palpus. Ent. News, IX, 1 12, 1898. 84 PROCEEDINGS OF THE ACADEMY OF [March, Fig. 10. — Tmeticus rusticus, hook. Fig. 11. — Ceratinella placida, palpus. Fig. 12. — Microneta minutissima, palpus. Fig. 13. — Bathyphantes decora, palpus. Fig. 14. — Microneta complicate,, palpus. Fig. 15. — Dictyna maxima, palpus. Plate XI. — Fig. 16. — Microneta palustris, palpus. Fig. 17. — Bathyphantes tristis, head. Fig. 18. — Grammonota venusta, vulva. Fig. 19. — Cornicularia placida, vulva. Fig. 20. — Pirata montanoides, two vulvae. Fig. 21. — Diplostyla alboventris, hook. Fig. 22. — Ccelotc* gnavus', vulva. Fig. 23. — Lophocarenum miniatum, vulva. Fig. 24. — Coelotes altilis, vulva. Fig. 25. — Microneta palustris, vulva. Fig. 26. — Cicurina placida, vulva. Fig. 27. — Tmeticus distinctus, vulva. Fig. 28. — Lophocarenum castaneum, vulva. Fig. 29. — Lophomma cristata, vulva. PROC. ACAD. NAT. SCI. PHI LA. 1916. PLATE X. BANKS: CAYUGA LAKE SPIDERS. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XI. BANKS: CAYUGA LAKE SPIDERS. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 85 April 18. The President, Samuel G. Dixon, M.D., LL.D., in the Chair. Thirty-five persons present. The deaths of the following members were announced: Emlen Physick, March 21, 1916. Charles Chauncey, April 3, 1916. Norton Downs, April 15, 1916. The Publication Committee announced the presentation of a paper entitled ' ' Contributions to the Anatomy of Python reticulatus (Schneider)," by Joseph C. Thompson (April 8, 1916). Temperature and the Activities of Animals. — Merkel H. Jacobs, Ph.D., remarked that the continued existence of living organisms is possible within a range of temperature of the order of magnitude of possibly one one-thousandth of that encountered in the universe. The majority of the activities of organisms occur within the region from slightly below 0° C. to about 45° C. For individual species the range is usually less — sometimes as little as 15° or even 6° C. A certain number of forms can exist for a short time in a more or less inactive condition through a range of 350° C. or more. Even within the natural range for a species the effects of different temperatures is very striking. A rise of 40° C. may cause at least a 16-fold increase in the rate of most of the chemical reactions under- lying the various manifestations of life. Since different processes are accelerated unequally by such a rise and since the point of equi- librium in reversible reactions is changed, the effect on the organism a- a whole may be qualitative as well as quantitative. The use of high temperatures has been a favorable means of securing striking- modifications of existing forms of life. A possible case of a heritable variation produced in this way is the three-vacuoled race of Parame- cium which appeared sixteen months ago in the Zoological Laboratory of the University of Pennsylvania and which has remained constant ever since. Different organisms are differently situated with respect to the daily and yearly changes of temperature they are called upon to meet. Many marine forms are subject to an average change of less than 1° C. a day and 2° or 3° a year. On the other hand, terrestrial forms and those living in small bodies of fresh water frequently endure a daily range of 30° C. or more. The rotifer Philodina roseola is subjected to especially severe conditions. Living in small pools 7 86 PROCEEDINGS OF THE ACADEMY OF [April, whose temperature in the springtime may drop almost to the freezing point at night and rise in the sunlight 10° C. above the air tempera- ture, it frequently passes in the space of two or three hours from an arctic to a tropical environment and vice versa. In general, the forms that in their natural environment have to meet sudden tem- perature changes show greater powers of acclimatization than those living under more constant external conditions. A comparison of the powers of rapid acclimatization to high temperature of Paramecium or the tadpole which lives in fresh water pools, with starfish larvae which live in the ocean, shows striking differences in this respect. Many of the terrestrial animals have developed the power of main- taining a constant body temperature under widely varying external conditions. This power, however, is insufficient in most cases to make possible a strictly world-wide distribution. Man is able to supplement natural with artificial means of temperature control. Even he, however, is considerably affected by external temperatures, especially high ones. One factor in producing this result appears to be the effect of such temperatures on the circulation. The prac- tical result of a more complete control of temperature by man would be the opening up of the enormously fertile tropical regions of the earth. The following were ordered to be printed : 1916.] NATURAL SCIENCES OF PHILADELPHIA. 87 STUDIES IN THE DERMAPTERA AND ORTHOPTERA OF THE COASTAL PLAIN AND PIEDMONT REGION OF THE SOUTHEASTERN UNITED STATES. BY JAMES A. G. REHN AND MORGAN HEBARD. In the summers of 1911 and 1913, the present authors made extensive collections of, and field studies in, the Dermaptera and Orthoptera found in the southeastern States. About the time we were able to begin laboratory work on the first season's collecting, other series from the same general region were placed in our hands, since which time an increasing amount of data has become available bearing on the same subject. We feel the most advisable method of making available to workers the really great amount of distribu- tional, synonymic and variational information now in hand, to be the publication of this single large paper. The authors' time has been given more or less regularly for a period of two years to the preparation of this paper and others made necessary by collections referred to herein. It should be borne in mind that the present paper is not a final one, but instead a contribution based on available material, although nearly all of the species known from the regions studied are treated. In general, the geographic area covered by the collections here studied is, the Coastal Plain and Piedmont regions from the Potomac River south to north-central (non-peninsular) Florida, west to the western boundary of Georgia. In addition a fair amount of material from the higher elevations in Georgia, from certain localities in central Florida and also from Maryland and other more northern States has been included. Aside from the Georgia mountain region records, which are geographically very important, those from outside the main area covered by the paper have been included to place on record the extreme geographic limits of certain species, or to cite material used in the detailed discussion on the species. In the study of certain genera here treated we have found it not only desirable, but necessary, to revise completely those groups as found within North America, in the course of which work practically all the available collections bearing on the subjects have been examined. These revisions consumed much time and involved some travel. The collections of the United States National Museum, the Museum of Comparative Zoology and the Georgia State Collection 88 PROCEEDINGS OF THE ACADEMY OF [April, and the private series of Mr. W. T. Davis and Prof. A. P. Morse have furnished a great amount of important data, although the greater portion of our information has been derived from our own collections. The genera which have required comprehensive revis- ionary study are Cariblatta, Scudderia, Amblycorypha, Neocono- cephalus, Orchelimum, Conocephalus, Atlanticus, Cycloptilum, Cryp- toptilum, Gryllus and Miogryllus. Many data have been accumulated in the course of the studies here presented, which show the necessity of revisionary work in a number of other genera, but, unfortunately, either material or time is lacking at present to consider properly or thoroughly these groups ; we have, however, given summaries of such general conclusions as we have reached in these cases, the contributions being presented as abstracts of detailed studies we have in preparation or contempla- tion, or as accumulations of important general conclusions for the use of other workers. Such contributions will be found under Nomotettix,Neotettix, Tettigidea, Pardalophora, Hippiscus, Schistocerca, Melanoplus, and the Group Anaxiphites with particular reference to Anaxipha. The total number of specimens from the area under consideration examined in the preparation of this paper is 14,402, representing 251 species and geographic races, belonging to 100 genera. Of these species nine are here described as new, but a number of other new forms in the recently studied genera were based on material compris- ing portions of the series here recorded. In the text of this paper forty specific names and that of one genus have been placed in the synonymy, the completeness of the present material, with the conse- quent clearer appreciation of specific variation and character con- stancy, making the sinking of these names necessary. No synonymy has been established without several careful checkings of the evidence. Of the specimens examined, 7,294, or about one-half, were collected by the authors, chiefly in July, August and September, 1911 and 1913. The other principal sources of material, with the number of specimens examined from each, are as follows: Collection of W. T. Davis 1,071 Georgia State Collection 877. Collection of A. P. Morse 784 United States National Museum Collection 703 Cornell University Collection 636 Hebard Collection (other than Rehn and Hebard collecting) 611 Academy of Natural Sciences of Philadelphia Collection (other than Rehn and Hebard collecting) 211 1916.] NATURAL SCIENCES OF PHILADELPHIA. 89 Smaller series have also been examined belonging to the North Carolina Department of Agriculture, the Museum of the Brooklyn Institute of Arts and Sciences, the Pennsylvania State Department of Zoology and the Museum of Comparative Zoology. The neces- sity of seeing the historic Scudder Collection in the latter institution, to which three visits were made while preparing the present paper, is always very pressing in work on the North American species of the Orthoptera. In order to reduce the length of our entries and yet give complete data, we have used in the present paper, as in a number of previous ones, standard abbreviations for the sources of the material, or, in the case of the larger series which can be located by the collector's name we have considered the latter sufficient to place the specimens. No location is given for material collected by Rehn and Hebard, jointly or individually, as it is understood it is in the Philadelphia collections, either the Academy of Natural Sciences or the Hebard Collection. Material in the collection of Mr. W. T. Davis, of New Brighton, New York, collected by himself, and that of Dr. A. P. Morse, of Wellesley, Massachusetts, collected by the same individual, has no location given for it, as it is understood such material is in their respective collections unless otherwise specified. Material collected by other individuals in the Davis and Morse- Collections, has the location indicated by the abbreviations given below. No location is given for material credited as collected by Dr. J. Chester Bradley, it being understood that is in the Georgia State Collection at Atlanta unless from localities in the Okeefenokee Swamp, in which case it is in the collection of Cornell University. From each of these col- lections a representation has been retained in the Philadelphia collections in return for the work of identification. The abbreviations for the source of material used through the present paper are as follows: A. N. S. P., for the Academy of Natural Sciences of Philadelphia. B. I., for the Museum of the Brooklyn Institute of Arts and Sciences. Cornell Univ., for the collection of Cornell University. Davis Cln., for the collection of Mr. W. T. Davis, of New Brighton, St aten Island, New York. Ga. St. Cln., for the Georgia State Collection, located at Atlanta. Hebard Cln., for the Hebard Collection, in Philadelphia. M. C. Z., for the Museum of Comparative Zoology, at Cambridge, Massachusetts. Morse Cln., for the collection of Prof. A. P. Morse, of Wellesley, Massachusetts. 90 PROCEEDINGS OF THE ACADEMY OF [April, N. C. St. Dept. Agr., for the collection of the North Carolina State Department of Agriculture at Raleigh. Pa. St. Dept. Zool. Cm., for the collection of the Pennsylvania State Department of Zoology at Harrisburg. U. S. N. M., for the United States National Museum at Washington. In the references to the authors as collectors they are indicated by the initials R. and H. Localities. To facilitate the placing of localities given in the body of the paper we have tabulated alphabetically under States the localities repre- sented by fair series. The elevations given have been taken from Government topographical charts, official lists of elevations or our own aneroid determinations. In a few cases we have been unable to secure information on the elevation, in which case the fact is so stated. In addition, localities at or very near the sea-level have no elevation given. The dates given are those for the specimens examined and the location is that of the ownership of the same. Virginia. ' Arlington, Alexandria County, eleva- tion about 200 feet, VII, 9, 1914. (H.) Falls Church, Fairfax County, eleva- tion 364 feet. V, 25, 1913. (A. N. Caudell.) [U. S. N. M.] Fredericksburg, Spotsylvania and Stafford Counties, elevation about 10 to 250 feet. VII, 20, 1913. (R. & H.) Lynchburg, Campbell County, eleva- tion about 700 feet, VII, 22, 1913. (R. & H.j Glencarlvn, Alexandria County, eleva- tion 1S3 feet, IV, 27, 1913. (A. N. Caudell.) [U. S. N. M.] Orange, Orange County, elevation 500 to 800 feet. VII, 21, 1913. (R. &H.) Petersburg, Dinwiddie County, eleva- tion about 100 feet, VII, 23, 1913. (R. & H.) North Carolina. Charlotte, Mecklenburg County, eleva- tion 670 to 750 feet, VII, 27, 1913. (R. & H.) Fayetteville, Cumberland Countv, elevation 100 to 150 feet, IX, 9, 1911. (R. & H.) Goldsboro, Wayne County, elevation 110 feet. VII, 25, 1913. (R. & H.) Greensboro, Guitford County, eleva- tion 900 feet, VII, 26, 1913. (R. & H.) Lake Waccamaw, Columbus Countv, elevation 60 feet, IX, 8, 1911. (R. & H.) Murphy, Cherokee County, elevation 1,540 feet. VII, 25, 1903. (Morse.) [Morse Cln.] Raleigh, Wake County, elevation 350 feet, Various dates, collectors and collections. Southern Pines, Moore County, eleva- tion 519 feet, XI, 1908 and 1905. (A. H. Manee.) [N. C. Dept. Agr.l Trvon, Polk County, elevation 1,090 feet, (W. F. Fiske.) [U. S. N. M.] Weldon, Halifax County, elevation 70 feet. VII, 24, 1913. (R. & H.) Wilmington, New Hanover County. IX, 8, 1911. (R. & H.) Winter Park, New Hanover Countv. IX, 7, 1911. (R. & H.) Wrightsville, New Hanover County. IX, 7, 1911. (R. & H.) South Carolina. Ashlev Junction, Charleston Countv. VIII, 15, 1913. (R.) Columbia, Richland County, elevation 300 feet, VII, 28, 1913. (R. & H.) Denmark, Bamberg Countv, elevation 257 feet. VIII, 15, 1903. (Morse.) [Morse Cln.] 1916.] NATURAL SCIENCES OF PHILADELPHIA. 91 / KL ,— ' .• vv < *— -«r^ t A \ »-+ ■^ 1 \ \ + * + X, • \ \ A \ 1 V \ \ + '^»t V + \ i i + *t # « i + \ t \ [ : + *\ \ ^ •♦r^-^ I \ ++ + + *\~i Fig. 1. — Outline map of the southeastern United States, showing the positions of the principal localities, represented by series, in the collections studied in connection with this paper. 92 PROCEEDINGS OF THE ACADEMY OF [April, Florence, Florence County, elevation 138 feet, IX, 6, 1911. (R. & H.) Isle of Palms, Charleston County. VIII, 15, 1913. (R.) Magnolia, Charleston County. IX, 5, 1911. (R. & H.) Manning, Clarendon County, eleva- tion 91 feet V, 1914. (Witmer ^ Stone.) [A. N. S. P.] Spartanburg, Spartanburg County, elevation 875 feet. VIII, 6, 1913. Sullivan Island, Charleston County. IX, 5, 1911. (R. & H.j Yemassee, Hampton and Beaufort Counties, elevation 18 to 40 feet. IX, 4, 1911. (R. & H.) Georgia. Albany, Dougherty County, elevation 184 feet. VIII, 1, 1913. (R. & H.) Atlanta, Fulton County, elevation 900 to 1,050 feet. Numerous dates and collectors. [Ga. St. Cln.] Augusta, Richmond County, elevation 140 to 200 feet. VII, 29, 1913. (R. & H.) Austell, Cobb County, elevation 900 to 1,000 feet. VIII, 6, 1910. [Ga. St. Cln.] Bainbridge, Decatur County, eleva- tion 110 feet. Numerous dates. (J. Chester Bradley.) [Ga. St. Cln.] Billy's Island, Okeefenokee Swamp, Charlton County. V and VI, 1912, IX and XII, 1913. (J. Chester Bradley.) [Cornell University.] Black Rock Mountain, Rabun County, elevation 2,000 to 3,500 feet. V, 20 to 25, 1911. [Ga. St. Cln.] Brunswick, Glynn County. II, 12, 1911. [Ga. St. Cln.] VII, 30, 1911. (R. & H.) Buckhead, Fulton County, elevation 1,000 feet. IV, 16, 1911. [Ga. St. Cln.] VIII, 2, 1913. (R. & H.) Burton, Rabun County, elevation 1,800 feet. V, 21, 1911. (J. Chester Bradley.) [Ga. St. Cln.] Chase Prairie, Okeefenokee Swamp, Charlton County. IX, 5, 1913. (J. Chester Bradley.) [Cornell Univ.] Clayton, Rabun County, elevation 2,000 to 3,700 feet. VI. (Davis.) [Davis Cln.] Columbus, Muscogee County, eleva- tion 200 to 350 feet. VII, 16, 1913. (J. Chester Bradley.) [Ga. St. Cln.] Cornelia, Habersham Countv, eleva- tion 1,500 feet. V, 28, 1906. [Ga. St. Cln.] VII, 1910. (Davis.) .[Davis Cln.] Cumberland Island, Camden County. ^ VIII, 31, 1911. (R. & H.) Currahee Mountain, Stephens County, elevation 1,700 feet. VIII, 5, 1913. (H.) Dalton, Whitfield Count}', elevation 1,000 to 1,200 feet. VIII, 7, 1913. (R.). De Witt, Mitchell County, elevation cannot be ascertained. VIII, 19, ^ 1912. [Ga. St. Cln.] Fargo, Clinch County, elevation 116 feet. VIII, 31, 1913. (J. Chester Bradley.) [Cornell Univ.] Groveland, Bryan County, elevation cannot be ascertained. VII, 28, 1913. (J. Chester Bradley.) [Ga. St. Cln.] Hebardville, Ware Countv, elevation 'about 150 feet. V, 15, 1915. (H.) Homerville, Clinch County, elevation 176 feet, VIII, 27, 1911. (R. & H.) Honev Island, Okeefenokee Swamp, Charlton County. VI, 1912. (J. Chester Bradley.) [Cornell Univ.] Isle of Hope, Chatham County. IX, 3,1911. (R. & H.) Jesup, Wayne County, elevation 100 to 125 feet. IX, 1, 1911. (R. & H.) Jasper, Pickens Countv, elevation 1,200 to 1,500 feet. VIII, 5, 1913. (R.) Macon, Bibb County, elevation 350 feet. VII, 30 to 31, 1913. (R. &H.) Mixon's Hammock, Okeefenokee Swamp, Charlton Countv. V, 16, 1915. (H.) Okeefenokee Swamp (general label), Ware, Charlton and Clinch Counties: V, 1911. (J. Chester Bradley.) [Cornell Univ.] Pinnacle Peak, Rabun County, eleva- tion 4,100 feet. VIII, 20. 1913. (J. Chester Bradley.) [Ga. St. Cln.] Rabun Bald, Rabun Countv, elevation 4,000 to 4,800 feet, VIII, 21, 1913. (J. Chester Bradley.) [Ga. St. Cln.] Sandfly, Chatham Countv. IX, 3, 1911. (R. & H.) Savannah, Chatham County. Various dates, collectors and collections. Sharp Mountain, Pickens County, elevation 1,800 to 2,000 feet (baro- metric).1 VIII, 6, 1913. (R.) 1 This peak is about nine miles to the westward of Jasper and should not be confused with Sharp-top Mountain near the same place. The latter peak is higher than Sharp Mountain and is to the eastward of Jasper. Sharp-top Mountain was visited by Morse in 1903. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 93 Spring Creek, Decatur County, eleva- tion about 110 feet. Numerous dates. (J. Chester Bradlev.) [Ga. St. Cln.] Stone Mountain, De Kalb County, elevation 1,050 to 1,686 feet. Vicin- itv of same, elevation 950 to 1,050 feet. VIII, 3, 1913. (R. A: H.) St. Simon's Island, Glvnn Count v, IV to Y, 1011 and L912. (J. Chester Bradlev.) [( la. St. Cln.] VIII, 30, 1911. (R. &H.) Suwanee Creek, Lot 328, 12th Dis- trict, Okeefenokee Swamp, Charlton County. VIII, 28, 1911. (R. &H.) Tallulah Falls, Rabun County, eleva- tion 1,630 feet, VIII, 1887. [U. S. N. M. and Bebard Cln.] VII, 1910. (Davis.) [Davis Cln.] Thomasville, Thomas County, eleva- tion 250 feet. Various dates. (H. and R. & H.) Thompson's Mills, Jackson County, elevation cannot be ascertained. Various dates. (H. A. Allard.) [U. S. N. M.] Tifton, Tift County, elevation 370 feet. IX, S, 1910." [Ga. St. Cln. J Toccoa, Stephens Coilntv, elevation 1,094 feet. VIII, 4, 191.3. (H.) Tuekoluge Creek, Rabun Count v, elevation 1,600 to 2,600 feet. VII, 1910. (Davis.) [Davis Chi.] Tvbee Island, Chatham County. IX, 2,1911. (R. &H.) Warm Springs, Meriwether County, elevation 850 to 1,200 feet. VIII, 9 to 10, 1913. (R.) VYavcross. Ware Countv, elevation bis feet. VIII, 11, 1903. (Morse [Morse Cln.] Wilson Gap, Mountain City, Rabun County, elevation cannot be ascer- tained! VI 11, 22, 1913. (J. Chestei Bradley.) [Ga. St. Cln.] Florida. VIII. Atlantic Beach, Duval County. 24 to 25, 1911. (R. & H.) Fernandina, Nassau County. (W. H. Finn.) [U. S. X. M.] Hastings, St. John Countv. Various dates. (A.J.Brown.) [Morse Cln.] Indian River, Volusia and Brevard Counties. 1896. (T. J. Priddey.) [Hebard Cln.] Jacksonville, Duval County. Various dates, collectors and collections. Examined by authors, VIII, 25, 191 1 . Live Oak, Suwanee Countv, elevation 100 to 120 feet. VIII, 26, 1911. (R. &H.) Ortega, Duval County. IX, 6, 1913. (Davis.) [Davis Cln. 1 Pablo Beach, Duval Countv. IX, 5, 1913. (Davis.) [Davis Cln.] South Jacksonville, Duval County. IX, 7, 1913. (Davis.) [Davis Cln.] St. Augustine, St. John County. XI, 8, 1911. (G. P. Englehardt.) [B. I.] Distributional Summary. Two important influences or sets of factors quite evidently control the distribution of the Dermaptera and Orthoptera in the area studied, these influences being the same which largely control the character of the biota of any region. The two are: physiography and immediate environment; temperature and climatic regions or life-zones. The two influences share equally in controlling the distribution of certain species, but in numerous cases one and not the other is the governing factor. It seems best, therefore, to summarize our distributional generalizations separately under each of the main divisions. We must always bear in mind that a fauna is not a fixture, but a complex constantly changing and modifying, either through the evolution of its own living components or the modifica- tion of its own limitations by readjustment of its physical or climatic barriers. Of the first grouping the effect of immediate environment is best studied in a relatively circumscribed area and, other things being equal, the occurrence of the environment is controlled by the 94 PROCEEDINGS OF THE ACADEMY OF [April, more broadly influencing factor of the physiography of the land. The physiographic divisions we here use are those which are cor- related with the distribution of groups of species of the orders studied. Physiographic Regions. The physiographic regions we find correlated with the distribution of the species found in Virginia, North Carolina, South Carolina, Georgia and northern Florida are: a. High Appalachian summits. b. Lower summits of the Appalachian uplift and higher valleys of the same area. c. Piedmont. d. Coastal Plain. This is divisible into two sections which we have for convenience called the Upper Coastal and the Lower Coastal. e. Maritime and estuarine region. These regions may be roughly delimited as follows: High Appalachian Summits. — Only the highest peaks of the North Carolina and Virginia mountains are embraced in this term. Very few Orthoptera have been taken in this region. Lower Summits and Valleys of the Appalachian Uplift. — Comprising the greater (remaining) portion of the Southern Appalachian system to its disappearance in Alabama, and the typical mountain valleys, as opposed to the broad intrusive Piedmont valleys, are grouped under this heading. The Georgia mountains, having in general a lower elevation than the major portion of the North Carolina moun- tain area, lack a number of the species found in the latter region, and also on their lower portions shelter species more typical of the Piedmont. Other species, which also occur in the Georgia mountains, penetrate the valleys of the North Carolina mountains, but do not frequent the main ridges in the latter State. Piedmont. — This division includes the area of the Piedmont pene- plain, or the region from the base of the Appalachians down to the fall-line, also embracing some of the larger and broader valleys which penetrate into the mountainous region proper. The fall-line extends in a curve from the vicinity of Washington, District of Columbia, to Columbus, Georgia. Coastal Plain. — All the area situated below (i.e., coast ward of) the fall-line is embraced in this grouping. It is, from the Orthopteran evidence, distinctly divisible into two portions which may for con- venience be called the Upper and Lower Coastal Plain regions. The Upper region covers all the territory of the Coastal Plain situated 1916.1 NATURAL SCIENCES OF PHILADELPHIA. 95 to the nortli and inland of a line drawn from the vicinity of Newbern, North Carolina, to the vicinity of Albany, Georgia, passing a short distance inland of Wilmington, North Carolina, Charleston, South Carolina, and Savannah, Georgia. The territory on the coastal side of this line, except the very limited section included in the next Fig. 2. — Outline map of the southeastern United States, showing the more extensive physiographic regions here discussed. The limited areas treated under "High Mountain Summits" and the very narrow "Sea-coast and Estuarine" region are not indicated. 96 PROCEEDINGS OF THE ACADEMY OF [April, area, we would consider the Lower Coastal Plain, which condition passes southward into peninsular Florida. The western boundary of the Lower Coastal Plain influence is not fixed as yet. Maritime and Estuarine Region. — We include under this, barrier beach and coastal sand dunes, salt marshes and the extensive fresh marshes of the larger estuaries. The region is limited to a distance of a few miles from the coast-line, except in the case of the estuaries. The following tabulations of species have .been made on the basis of their distribution in relation to the physiographic features of the region studied. I. General. Labia minor (Probably introduced.) Blatta orientalis (Introduced.) Blattella germanica (Introduced.) Nemobius carolinus carolinus II. Appalachians (except high summits) to coast. Neotettix femoratus (Up to 5,500 feet Scudderia furcata furcata (Up to 3,S00 elevation in North Carolina.) feet in North Carolina.) Paratettix cucullatus Conocephalus fasciatus Orphulella pelidna (Up to 5,000 feet in Conocephalus brevipennis North Carolina.) Ellipes minuta Arphia xanthoptera Myrmecophila pergandei Arphia sulphurea (Up to 5,700 feet in Gryllus assimilis (Up to 4,500 feet in North Carolina.) North Carolina.) Dissosteira Carolina (Up to 4,500 feet CEcanthus angustipennis (Up to 4,000 in North Carolina.) feet in North Carolina.) Schistocerca serialis (Up to 5,700 feet (Ecardhus quadripunctatus (Up to 4,000 in North Carolina.) feet in North Carolina.) III. Appalachian valleys and lower mountains in Georgia to coast. Oligonyx scudderi Trimerotropis citrina Tettigidea armata CEcanthus latipennis Truxalis brevicornis Neoxabea bipunctata Amblytropidia occidenlalis Phylloscyrtus pulcheUus Pardalophora phatiicoptera IV. High Appalachian summits only. Nomotettix cristatus cristatus Melanoplus diver gens P.odisma glacialis variegata V. Mountains only (summits and adjacent valley localities) in southeastern States. Cryplocercus punctulatus Melanoplus sylvestris Diapheromera Carolina Melanoplus walshii Acrydium hancocki N eoconoce phalus ensiger (Northward Chorthippus curtipennis (Northward occurring Piedmont and Coastal.) occurring Piedmont and Coastal.) Conocephalus allardi Pardalophora apiculata Atlanticus monticola Paratylolropidia beutenmuelleri Ceuthophilus lapidicola Melanoplus similis CEcanthus nigricornis Melanoplus deceptus 1916.] NATURAL SCIENCES OF PHILADELPHIA. 97 VI. Mountains and Piedmont. Am somorpha ferruginea Acrydium arenosum angustum (North- ward occurring Coastal.) Acrydium ornatum Neotettix proavus Eritettix simplex (Northward occurring Coastal.) Orphuhlla spedosa (Northward occur- ring Coastal.) Chlaaltis conspersa (Northward occur- ring Coastal.) Encoptolophus sordidus (Northward occurring Coastal.) Hesperotettix brevipennis (Northward occurring Coastal.) Trimerotropis saxatilis Mclanoplus tribidus (Northward occur- ring Coastal.) Melanoplus devius Melanoplus decoratus Melanoplus luridus luridus (North- ward occurring Coastal.) Melanoplus punctulatus punctulatus (Northward occurring Coastal.) Amblycorypha rolundifolia rotundi- folia (Northward occurring Coastal, passing at lower elevations in South- eastern States toward A. r. parvi- pennis.) PterophyUa camellifolia camellifolia (Northward occurring Coastal.) Conocephalus nemoralis Atlanticus davisi Ceuthophilus uhleri (Northward occur- ring Coastal.) Ceuthophilus gracilipes Nemobius fasciatus fasciatus (Occur- ring Coastal northward.) Nemobius maculatus (Ecanthus niveus (Northward occurring Coastal.) VII. Lower Mountains, Piedmont and Upper Coastal Plain. Nomotettix cristatus compressus Chortophaga viridifasciata (To Sullivan Island, South Carolina.) Melanoplus carnegiei (To Yemassee, South Carolina.) Melanoplus femur-rubrum femur- rubrum Melanoplus fernoratus Orchelimum vulgar e Hapithus agitator agitator VIII. Lower Mountains and Piedmont Region south to southwestern Georgia and adjacent northern Florida, absent from all or most of Carolinian and low Georgian Coastal. Diapheromera femorata (To Monti- cello, Florida.) Spharagemon bolli (To Tallahassee, Florida.) Melanoplus scudderi scudderi (To Mon- tieello, Florida.) Melanoplus atlanis (To Marianna, Florida.) Melanoplus impudicus (To Spring Creek, Georgia.) Conocephalus saltans (To Thomasville and Spring Creek, Georgia.) Atlanticus americanus (To Tallahassee and River Junction, Florida.) IX. Piedmont Region. Doru aculeatum Ischnoptera pensylvanica pensylvanica (Occurring Coastal northward.) Ischnoptera uhleriana uhleriana (Oc- curring Coastal northward.) Ischnoptera insolita Schistocerca damnified damnifica (Oc- curring Coastal northward.) Campylacantha olivacea (Macon, Geor- gia, only. Melanoplus impiger (Augusta, Georgia, only.) < Atlanticus testaceus (Occurring Coastal northward.) Ceuthophilus latens Ceuthophilus spinosus (Occurring Coas- tal northward.) Ceuthophilus negleclus (Occurring Coas- tal northward.) Nemobius griseus funeralis (Macon, Georgia, only.) Nemobius bruneri Nemobius confusus (Ecanthus exclamationis (Raleigh, North Carolina, only.) (Ecanthus pini (Raleigh. North Caro- lina, only.) 98 PROCEEDINGS OF THE ACADEMY OF [April, X. Piedmont and Coastal Plain only to extreme northern Florida. Acrydium arenosum arenosum Melanoplus strumosus (To De Funiak Springs, Florida.) Hadenoecus puteanus Anaxipha exigua Cyrtoxipha Columbiana XL Piedmont and Coastal Plain to peninsular Florida. Vostox brunneipennis Ischnoptera deropeltiformis Ischnoptera johnsoni Ischnoptera couloniana Ischnoptera borealis Ischnoptera bolliana (Northward only to Raleigh, North Carolina.) Periplaneta americana Chorisoneura texensis (Northward only to Tryon, North Carolina.) Stagmoma ntis Carolina Tettigidea lateralis lateralis (At higher elevations and northward in Coastal Plain passing into T. I. parvipennis.) Mermiria alacris (Northward only to Newbern, North Carolina.) Syrbula admirabilis Dichromor pha viridis Ronialea microplera (Northward only to central North Carolina.) Leptysma marginicollis (Northward only to vicinity of Washington, District of Columbia.) Melanoplus luridus keeleri (At higher elevations and northward passing into M. I. luridus.) Paroxya clavuligera (Local in Pied- mont.) (Coastal alone crepitans and pass- Scudderia texensis Amblycorypha uhleri northward.) Microcentrum rhombifolium Neoconocephalus robustus (Northward Coastal only ing into N. r. robustus.) Neoconocephalus triops Orchelimum agile Orchelimum minor (Northward Coastal only.) Odontoxiphidium apterum (Extending as high as Sand Mountain and Blue Ridge, Georgia, but only north to Fayetteville, North Carolina.) Camptonotus carolinensis Gryllotalpa hexadactyla Tridactylus apicalis (Data poor.) Cycloptilum squamosum (North Caro- lina northward Coastal only.) Nemobius ambitiosus (North only to Florence, South Carolina.) Anurogryllus muticus (Northward Coastal only.) Gryllus domesticus Miogryllus verticalis Orocharis saltator (Northward Coastal only.) XII. Piedmont and Coastal Plain in northern area of Southeastern States only. Melanoplus confusus (South to Have- lock, North Carolina.) Amblycorypha oblongifolia (South to Weldon, North Carolina, and Chat- tanooga, Tennessee.) Amblycorypha floridana carinata (South of fall line in South Carolina and Georgia passing into A. f. floridana; northward Coastal only.) Conocephalus strict us (South to Raleigh and Newbern, North Carolina.) Atlanticus pachymerus (South to Have- lock, North Carolina, and "South Carolina.") Nemobius palustris (Only Coastal in region, south to Wilmington, North Carolina; Piedmont northward.) XIII. Coastal Plain to peninsular Florida. Anisolabis annulipes Labidura bidens Prolabia unidentata Ischnoptera divisa Ischnoptera uhleriana fulvescens (North only to southeastern Virginia.) Cariblatta lutea lutea (North only to northern North Carolina.) Manomera tenuescens (North only to northern North Carolina.) Neotettix bolteri 1916.] NATURAL SCIENCES OF PHILADELPHIA. 99 Paxilla olusa (North only to eastern North Carolina. I Tettigidea prorsa (To northern Florida. ) Radinotatum brevipenne brevipenne (North only to Yemassee, South Carolina; straggler into Piedmont in Georgia.) Clinocephalus elegans (Maritime only northward.) Spharagi man coUare wyomingianum Scirtetica marmorata picta (In northern North Carolina passing into S. m. marmorata.) Psinidia f i m stralis Schistocerca obscura (North to Mary- land; straggler in Piedmont.) Schistocerca nlutacca (In Tennessee drainage in western North Caro- lina.) Schistocerca damnifica calidior (Passing at fall line and north of North Caro- lina into S. d. damnified.) Eotettix pusillus (North only to North Carolina: straggler into Piedmont in Georgia.) Hesperotettix floridensis (North only to Augusta, Georgia; straggler in Piedmont in Georgia.) Melanoplus decorus (Limited distribu- tion in North Carolina.) Melanoplus australis (Limited distri- bution in South Carolina and Georgia.) Melanoplus attenuatus (Limited distri- bution, Georgia to North Carolina.) Melanoplus hebardi (Limited distribu- tion in Georgia.) Melanoplus nubilus (Limited distribu- tion in North Carolina.) Melanoplus mirus (Limited distribu- tion in North Carolina.) Melanoplus stegocercus (Limited dis- tribution in Georgia.) Melanoplus scapularis (Limited distri- bution in Georgia.) Melanoplus nigrescens (Limited distri- bution in North Carolina and Georgia.) Mi lanoplu.s (pit rut us ( Limited distribu- tion in Georgia.) Melanoplus clypeatus (Limited distri- bution in Georgia. Melanoplus punctulatus arbort us (Pass- ing in Georgia Piedmont and north- ward in Coastal Plain into M. p. punctulatus.) Paroxya atlantica atlantica Anthaca phalaugium (North only to Augusta, Georgia.) Scudderia cuneata (North only to Raleigh, North Carolina.) Symmetropleura modesta (North only to Raleigh, North Carolina.) Pterophylla camellifolia intermedia (Passing in Georgia Piedmont and northward in Coastal Plain into P. c. camellifolia.) Pyrgocorypha uncinata (North only to Raleigh, North Carolina.) Neoconocephalus exiliscanorus (Strag- gler in Georgia Piedmont from L~pper Coastal Plain.) Neoconocephalus caudellianus Neoco n ocepha I us pa I uslris Orchelimum glaberrimum Orchelimum laticanda (Straggler in Georgia Piedmont.) Orchelimum militare Orchelimum superbum (Virginia and New Jersey only.) Conocephalus stictomerus (South only to Raleigh, North Carolina.) Cryptoptilum antillarum (North only to Alamance County, North Carolina.) Cryptoptilum trigonipalpum (North onjy to Petersburg, Virginia; strag- gler in Georgia Piedmont.) Nemobius fasciatus socius (North only to Raleigh, North Carolina, north- ward and in southern Piedmont passing into .V. /. fasciatus.) Nemobius cubensis cubensis Anaxipha pulicaria (North only to Raleigh, North Carolina.) Falcicula hebardi (Straggler in North Carolina Piedmont.) XIV. Lower Coastal Plain in the Carolinas, Georgia and extreme northern Florida. Xamotettix cristalus arcuatus (Passing northward and higher into N. c. compressus and southward into .V. c. f'nridanus.) Melanoplus furcatus (Georgia and Florida only. I Scudderia curvicauda laticauda (Grad- ually intergrading northward and higher into aS'. c. curvicauda.) Orchelimum bradleyi (North to Wil- mington, North Carolina.) Atlanticus dorsalis (North to "South Carolina.") Atlanticus calcaratus (Georgia and Florida only.) Scapteriscus vicinus (Georgia only.) Snipteriscus acletus (Georgia only.) Xi mobius palustris aurantius (Georgia only.) 100 PROCEEDINGS OF THE ACADEMY OF [April, XV. Lower Coastal Plain into peninsular Florida. Ischnoptera nigricollis (Not north of Georgia.) Ceratinoptera diaphana (Not north of Georgia.) Eurycotis floridana (Not north of Georgia.) Periplaneta australasiae (Not north of Florida.) Periplaneta brunnea (Not north of Georgia.) Pycnoscelus surinamensis (Not north of Florida.) Gonatista grisea (North to South Caro- lina.) Thesprotia graminis (Not north of Georgia.) Anisomorpha baprestoides (North to South Carolina.) Paratettix rugosus (Not north of Georgia.) Tettigidea spicata (Not north of Georgia.) Mermiria bivitlata Arphia gramdata Chortophaga australior (North to Savannah, Georgia.) Spharagemon crepitans (Not north of Georgia.) Stenacris vitreipennis Gymnoscirtetes pusillus (Not north of Georgia.) Melanoplus rotundipennis (Not north of Georgia.) Melanoplus femur-rubrum propinquus (Passing at the Georgia and South Carolina fall line into M. f. femur- rubrum; not typical north of Wil- mington, North Carolina.) Aptenopedes sphenarioides sphenarioides (Not north of Georgia.) Aptenopedes aptera (Not north Georgia.) Belocephalus subapterus (North South Carolina.) Belocephalus davisi (Not north Georgia.) Neoconocephalus velox (Not north Georgia.) Atlanticus gibbosus (Straggler into Georgia Piedmont.) Ceuthophilus latibuli (Not north Georgia.) Scapteriscus abbreviatus (Not north Georgia.) Anaxipha vittata (Not north Georgia.) Hapithus agitator quadratus (Inland and northward passing into H. a. agitator.) Hapithus brevipennis (Not north of Georgia.) of to of of of of of XVI. Maritime and Estuarine Element. Anisolabis maritima Mermiria intertexta Orphulella olivacea Orphulella halophila (Southern Flor- ida.) Trimerotropis maritima Orchelimum concinnum Orchelimum fidicinium Conocephalus aigialus Conocephalus nigropleuroides Conocephalus spartince In table II, we have given as a matter of information the elevation of the upper limit of distribution, where this is exactly known. Table III covers forms occurring in the larger Appalachian valleys, as far north as North Carolina or the lower mountains in Georgia, or both, to the coast, exclusive of the Maritime and Estuarine Region. In table V appear species which considerably modify their physiographic distribution elsewhere in the eastern United States, and this fact is there, and in subsequent tables, indicated in paren- theses. In table VIII, we have endeavored to express a peculiar type of distribution : one covering the lower mountains and Piedmont and, although absent from most or all of the Coastal Plain, extend- ing south into southwestern Georgia or even into the adjacent portion of northern Florida. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 101 The more interesting generalizations drawn from the physiographic summaries are the following. Northward numerous species, charac- teristic of the Piedmont in the area here treated, pass to the Coastal Plain of that region, frequently, or rather generally, leaving the Piedmont. The explanation of this is apparently temperature control and the distribution is typical of the Upper Austral life-zone. Toward the southern end of the Piedmont region numerous forms, characteristic of this section in the Carolinas, enter the lower moun- tains, doubtless as valley intrusions; this also can be explained by temperature control and is zonal in character. Along the coastal side of the Piedmont in Georgia, a number of Coastal Plain species penetrate the Piedmont for considerable distances to points such a- Warm Springs, vicinity of Stone Mountain, Thompson's Mills, Toccoa and even to suitable situations on the slopes of Currahee Mountain, an outlying knob near Toccoa. This is quite marked in the case of Warm Springs, which has seven species of this category occurring there.2 The extending influence of the larger river valleys, such as the Savannah, Oconee, Ocmulgee, Flint and Chattahoochee, is doubtless responsible for these intrusions, for such they are is evidenced by the known distribution of the species elsewhere and the generic habitat. The division of the Coastal Plain into two areas has abundant evidence in its favor in the Orthoptera, as the tabula- tions show. It is significant also that quite a few of the forms do not reach into peninsular Florida. Further studies on the dis- tribution of central Florida forms of the orders will doubtless throw much additional light on the fixity of these limitations. It is possible that a lack of material may be partly responsible for the apparent restriction of these ranges. In the case of the divisions of the Coastal Plain, our material is sufficiently full to show the correlations very clearly. Life Zones. The life zones represented in the area studied are the following: a. Boreal or Canadian. b. Transition or Alleghanian. €. Upper Austral or Carolinian. d. Lower Austral or Austroriparian. e. Basic Austral or Sabalian.3 2 These are: Cariblatta luleahdea (also Thompson's Mills), Radinotatum brevi- penne brevipenne, Scirtetica marmorata picta, Eotettix pusillus, Hesperotettix floridensis, Atlanticus gibbosus (also on Currahee Mountain) and Cryptoptilum trigonipalpum (also vicinity of Stone Mountain). 3 For remarks on this zone see p. 104. 8 102 PROCEEDINGS OF THE ACADEMY OF [April, ♦♦"MM* v+> Fig. 3. — Outline map of the southeastern United States, showing the extent of the principal life zones. The circumscribed Boreal areas on the mountains of North Carolina and Virginia have not been indicated. For comments upon and definition of the Sabalian zone see the zonal distributional informa- tion in the introductory portion of this paper. The extent of the Sabalian, as well as the other zones to the west of the Georgia-Alabama line and the Chattahoochee River, has not been determined by us. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 103 The zones may be briefly outlined as follows:4 Boreal or Canadian Zone. — This zone occupies the summits of the higher mountains in North Carolina and Virginia, suck as the Black Mountains, Koan Mountain, Grandfather Mountain, Mt. Pisgah, Balsam Mountains, etc. This is the area of balsam forests within the territory studied. We do not feel that the zone has been suf- ficiently studied to consider the total number of species reported from it as a fair index of the Orthoptera therein. Transition or Alleghanian Zone. — This zone comprises all the truly mountainous country below the Boreal summits; in Georgia, how- ever, being largely restricted to the elevations greater than 1,500 feet. Slope exposure is largely responsible for the presence or absence of this element near its upper and lower margins. In North Carolina, large valleys of tributary streams of the Tennessee carry tongues of the Upper Austral for considerable distances into the otherwise solidly Transition country. The same appears to be true to a lesser degree in the Transition area of Georgia, which is in large part much tinctured with Upper Austral elements. Upper Austral or Carolinian. — The area comprised in this zone extends from the lower border of the Transition zoneTdown to a line roughly drawn from a short distance up stream of the mouth of the Potomac River, to Weldon, North Carolina, to Raleigh and Char- lotte, North Carolina, traversing transversely the area between Spartanburg and Columbia, South Carolina, and crossing the State of Georgia- in a southwesterly direction to the vicinity of Warm Springs, Georgia, then curving northwest into Alabama. As stated above, pronounced valley intrusions of this fauna enter western North Carolina from the Tennessee Valley, while in Georgia it apparently pushes its way well into and even up the lower slopes of the mountains, apparently in sharp competition with the Transitions forms occurring in the same region. The two elements will be governed in their distribution, at one of their points of contact, by slope exposure; at another, by the normal cover or by the burning-over of the land. As we have discussed above under Physiography, a number of distinctly Lower Austral forms occur within normally Upper Austral areas, at localities such as Currahee Mountain, Toccoa, vicinity of Stone Mountain and Thomp- son's Mills, and these extensions probably are, as suggested there, due to the extending influence of large river valleys, which provide 4 For a careful presentation of the life zones of North Carolina, see Brimley, Journ. Elisha Mitchell Scient. Soc, XXIX, pp. 19 to 27, (1913). 104 PEOCEEDINGS OF THE ACADEMY OF [April, avenues of entrance to suitable environments in a region in general characterized by a different fauna. The fact that these extensions occur only, as far as known, at a few localities gives support to this explanation. Lower Austral or Austroriparian. — This zone covers the area situated below (i.e., in elevation) the Upper Austral, down to a line extending from the southern portion of Pamlico Sound, North Carolina, to Lake Waccamaw, North Carolina, to Yemassee, South Carolina, then swinging in a curve to Albany, Georgia, and the Chattahoochee River west of the last-mentioned locality. A few forms, which we would consider more representative of the Upper Austral zone, occur as stragglers within this area at localities such as Goldsboro and Fayetteville, North Carolina, Sumter and Flor- ence, South Carolina, Augusta and Macon, Georgia. It is possible that future work may show these forms to be equally characteristic of the Lower Austral; a very questionable possibility to our minds. In these cases, the interdigitation which we have mentioned as occurring at the upper limit of the Lower Austral is probably repeated in the reverse direction, but physiographic control features are probably responsible for these intrusions. Basic Austral or Sabalian.— -The present zone, which is co-extensive with the physiographic area called Lower Coastal by us, we find is so decidedly characterized by a considerable number of species, which extend southward to southern or at least to central or north- central Florida, that we have been compelled to give it a name. We have found no term in the literature which we could use, so we here propose the name Sabalian. The name has been derived from the technical name of the cabbage palmetto (Sabal palmetto), which is probably the most striking tree of the region named, and whose distribution is co-extensive with that area. The Sabalian zone is characterized by at least six species, outside of those occurring only in central and southern Florida, which are also West Indian in distribution or extremely close to West Indian species. The zone extends from the coast-line inland to the lower boundary of the Lower Austral, given above in defining that region, north to the region of Pamlico Sound and south into Florida. It is narrow in the Carolinas, but becomes broad in Georgia and its exact extent to the westward remains to be worked out. The exact line where this same influence gives way to the Tropical in southern Florida has not been critically mapped, owing to the need of more information 1916.] NATURAL SCIENCES OF PHILADELPHIA. 105 from the central and south-central portions of the peninsula. The information from the Tropical area of southern Florida is relatively full. The zonal distribution of the species treated in the present paper is tabulated below. In some cases it is known that the species, in certain regions of North America, occur in zones other than those here checked, but, unless this has a distinct bearing on the possible occurrence of the species in the same zone in the region here studied, we have not indicated its presence other than as found in the south- eastern States. In a few cases where species will in all probability be found in a certain zone in the southeastern States, judging by the analogy of other regions, or where the form is found in two zones, but by defect of the record is not known from one situated between these two, we have inserted a check for that life zone with a brief qualification. Transi- Upper Lower DERMAPTERA. Boreal. tion. Austral. Austral. Sabalian. LABIDURIDJE. Anisolabis annulipes 1 (part) 1 Anisolabis maritima 1 1 Labidura bidens 1 1 LABIID^J. Voslox brunneipennis Ill Labia minor Introduced-range nearly general. Prolabia unidentata 1 1 FORFIOULID^. Doru aculeatum 1 ORTHOPTERA. BLATTID^. Ischnoptera deropeltiformis 111 1 schnoptera nigricollis 1 Ischnoptera johnsoni Ill I schnoptera p. pensylvanica 1 1 Ischnoptera divisa 1 (part) 1 I schnoptera couloniana Ill Ischnoptera u. uhleriana 1 Ischnoptera u. fulvescens 1 I schnoptera borealis 1 1 I schnoptera bolliana Ill Ischnoptera insolita 1 Blattella germanica Introduced-range general. ( 'tratinoptera diaphana Cariblatta I. lutea 1 Eurycotis floridana 1 Blatta orientalis Introduced-range general. Periplaneta americana 1 1 Periplaneta australasiae... 1 106 PROCEEDINGS OF THE ACADEMY OF [April, Boreal. Periplaneta brunnea Transi- tion. 1 Upper Austral. 1 1 (strag- gler) Lower Austral. 1 Sabalian. 1 Pycnoscelus surinamensis.. Chorisoneura texensis Cryptocercus punctulatus .... MANTID^. 1 1 Stagmomantis Carolina Gonatista grisea Oligonyx scudderi Thesprotia graminis 1 1 1 1 1 1 1 1 1 PHASMID^J. Diapheromera femorata Manomera tenuescens Anisomorpha buprestoides.. Anisomorpha ferruginea 1 1 1 1 (part) 1 1 1 (part) 1 1 ACRIDID^3. Nomotettix c. cristatus 1 Nomotettix c. compressus.... Nomotettix c. arcuatus Acrydium a. arenosum Acrydium a. angustum Acrydium ornatum Neotettix proavus 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 (part) 1 1 1 (part) 1 1 1 1 1 1 1 1 (part) 1 1 1 1 1 1 1 Neotettix femoratus Neotettix bolteri Paratettix rugosus Paratetlix cucullatus Paxilla obesa Tettigidea prorsa Tettigidea spicata 1 (part) Tettigidea I. lateralis Tettigidea armata Radinotatum b. brevipenne.. Truxalis brevicornis Mermiria alacris Mermiria intertexta Mermiria bivittata Syrbula admirabilis Amblytropidia occidentalis. OrphuleUa pelidna OrphuleUa olivacea OrphuleUa speciosa Dichromorpha viridis Clinocephalus elegans Chloealtis conspersa 1 Chorthippus curtipennis 1 A rphia xa nthoptera Arphia granulata Arphia sulphur ea Chortophaga viridifasciata.. Chortophaga australior Encoptolophus sordidus Pardalophora phoenicoptera Hippiscus rugosus Dissosteira Carolina 1 (part) 191(5.1 NATURAL SCIENCES OF PHILADELPHIA. 107 Boreal. Spharagcmon crepitans Spharagernon bolli Spharagernon collare unjo- mingianum Scirtetica marmorata picta.. Psinidia .'< m stralis Trimerotropis maritima Trimerotropis citrina Trimerotropis saxatilis Romalea micro ptera Stenacris vitrei pen nis Leptysma marginicollis Schistocerca obscura Schistocerca alutacea Schistocerca serialis Schistocerca d. damnified.... Schistocerca d. calidior Gym noscirtetes pusillus Campylacantha olivacea Eotettix pusillus Eotettix signatus Hesperotettix floridensis Hesperotettix b. brevipennis Hesperotettix b. pratensis... Paratylotropidia beuten- muelleri Melanoplus similis Melanoplus deceptus Melanoplus decorus Melanoplus australis Melanoplus attenuatus Mela no pi u s hebardi Melanoplus nubilus Melanoplus tribulus Melanoplus devius Melanolpus decoratus Melanoplus rotundipennis.. Melanoplus stegocercus Melanoplus minis Melanoplus scapularis Melanoplus strumosus Melanoplus sylvestris Mela noplus carnegiei Melanoplus s. scudderi Mela noplus walshii Melanoplus nigrescens Melanoplus querneus Melanoplus atlanis 1 Melanoplus f. fernur-ru- brum 1 Melanoplus f. propinquus.. Melanoplus impudicus Mela noplus impiger Melanoplus confusus Melanoplus I. luridus Melanoplus I. keeleri Melanoplus femoratus Melanoplus furcatus Melanoplus clypeatus Transi- U pper Lower tion. Austral. Austral. Sabalian. 1 1 1 1 1 1 1 (part) 1 (part) 1 1 (part) 1 1 (part) 1 (part) 1 1 1 1 1 1 1 1 (part) 1 1 1 1 1 1 1 1 1 1 (part) 1 (part) 1 1 (location provisional) 1 1 1 I 1 1 1 1 1 1 1 (part) 1 1 1 (part) 1 (part) 1 (part) 1 (part) 1 1 1 (part) 1 1 (part) 1 (part) 1 1 1 1 (part) 1 (part) 1 1 1 1 1 (part) 1 1 1 (part) 1 (part) 1 1 1 108 PROCEEDINGS OF THE ACADEMY OF [April, Transi- Upper Lower Boreal. tion. Austral. Austral. Sabalian. Melanoplus p. punctulatus 1 1 1 (part) Paroxyaa. atlantica 1 (part) 1 1 Paroxya clavuligera 1 1 1 Aptenopedes s. sphenari- oides t 1 Aptenopedes aptera 1 TETTIGONIID^J. Arethaea phalangium 1 (part) 1 Stilpnochlora margin ella 1 Scudderia c. curvicauda-c. laticauda 1 Scudderia c. laticauda 1 1 Scudderia texensis 1 1 Scudderia f. furcata 1 1 1 Scudderia cuneata 1 1 1 Symmettopleura modesta.. . . 1 Amblycorypha oblongifolia. Amblycorypha f.floridana.. 1 Amblycorypha f. carinata... 1 Amblycorypha uhleri 1 1 Amblycorypha r. rotundi- folia., 1 1 (part) Amblycorypha r. r.-r. par- vipennis 1 (part) — 1 (part) Microcentrum rhombifo- lium 1 1 Microcentrum retinerve 1 1 Pterophylla c. camellifolia.. 1 Pterophylla c. intermedia.... 1 ? Belocephalus S2ibapterus i Belocephalus davisi l Pyrgocorypha uncinata 1 l Neoconocephalus exilis- canorus 1 Neoconocephalus robustus crepitans 1 1 l Neoconocephalus caudell- ianus l Neoconocephalus velox i Neoconocephalus retusus . . 1 1 l Neoconocephalus triops. 1 1 l Homorocoryphus malivo- lans 1 (part) l Orchelimum agile 1 1 l Orchelimum glaberrimum... 1 l Orchelimum vidgare 1 1 1 (part) Orchelimum laticauda 1 1 l Orchelimum minor 1 1 l Orchelimum concinnum 1 (part) 1 (part) 1 (part) Orchelimum fidicinium 1 (part) 1 (part) Orchelimtim militare 1 1 Orchelimum bradleyi 1 Orchelimum superbum 1 (part) Conocephal us allardi 1 Conocephalusf.fasciatus... 1 1 1 1 1 Conocephalus brevipennis... 1 1 1 1 Conocephalus nemoralis 1 1916.] NATUKAL SCIENCES OF PHILADELPHIA. 109 Transi- 1 pper Lower Boreal. tion . Austral. Austral. Sabalian. Conocephalus si rid us 1 (part) 1 (part) ( 'onod phalus stictomerus.... 1 (part) 1 (part) ( 'onucc phalus aigialus 1 (part) 1 (part) Conocephalus u igropleu- 1 (part) 1 (part. ( 'onocephalus spartinae 1 (part) 1 (parti ( 'onocephalus sultans 1 1 1 (part) Odontoxiphidium a pier urn.. 1 (part) 1 1 \llanticus testaceus 1 (not n regioi 0 1 (part) Atlanticus pachymerus 1 (part) 1 Atlanticus davisi 1 (part) 1 (part) Atlanticus monticola 1 1 Atlanticus americanus 1 1 1 (part) Atlanticus gibbosus 1 (part) 1 A tla uticus dorsalis .4 tlanlicus calcarat us Camptonotus carolinensis... 1 1 Hadenoecus puteanus m 1 1 1 < '< uthophilus uhleri 1 1 Ceuthophilus latibuli 1 ( '( uthophilus gracilipes 1 1 Ceuthophilus lapidicola 1 1 1 1 ( '( uthophilus spinosus 1 Ceuthophilus neglect us 1 G-RYLLIDiE. Gryllotalpa hexadactyla 1 (?) 1 1 Scapteriscus vicinus Sea pteriscus aclet us Scapteriscus abbrevial us Tridactylus apicalis 1 (elsewhere) 1 (elsewhere) 1 1 Myrmecophila pergandei.. . . 1 1 Cryptoptilum antillarum... Cryptoptilum trigonipal- Cycloptilum squamosum 1 Nemobius f. fascial us 1 1 Nemobius f. socius 1 1 Nernobius griseus funeralis Nemobius ambitiosus 1 (part) 1 Nemobius c. cubensis 1 Nt mobius p. palustris 1 (part) 1 (part) 1 (part) Nemobius p. aurantius Ne mobi us c. carolinus 1 1 1 Nemobius confusus 1 Anurogrullus muticus 1 1 1 1 Miogryttus verticalis 1 1 1 Oecanthus exclamationis ... 1 Oecanthus angustipennis 1 1 Oecanthus quadripunctatus. 1 1 Oecanthus nigricornis 1 1 (elsewhere) 110 PROCEEDINGS OF THE ACADEMY OF [April, Transi- Upper Lower Boreal. tion. Austral. Austral. Sabalian. Oecanthus pini 1 Oecanthus latipennis 1 1 Neoxabea bipundata 1 1 Anaxipha exigua 1 1 Anaxipha pulicaria 1 Anaxipha vittata Falcicula hebardi 1 1 Cyrtoxipha columbiana 1 1 Phylloscyrtus pulchellus 1 1 Hapithus a. agitator 1 (part) 1 (part) Hapithus a. quadratus 1 (part) Hapithus brevipennis Orocharis saltator 1 1 (part) Physiographic and Zonal Factors Compared. When the physiographic and zonal correlations are contrasted, we find that in Virginia the two factors are largely governed by the same boundaries, the Lower Austral alone not extending up the valley of the Potomac as far as the fall-line, which is the Piedmont- Upper Coastal Plain line. In North Carolina, the increased tem- perature effect of lower latitudes is evident, as the upper line of the Lower Austral, after following the fall-line, crosses it and ascends to higher country, this tendency increasing in Georgia, where the upper boundary of the same zone is in places as high as a thousand feet above sea level. Conversely, this crossing of the physiographic boundaries by zonal boundaries is found to the northward of the area here treated, where the entire Coastal Plain section of New Jersey and all or at least the greater portion of the Coastal Plain eastern peninsula of Virginia, Maryland and Delaware, is Upper Austral. It has been found in the Middle Atlantic States that many Upper Austral species are limited to southern New Jersey, not occurring above the fall-line. This restriction is probably due to the fact that the southern portion of New Jersey has a more equable winter climate (and consequently a higher sum total annual tem- perature) than the Piedmont of Pennsylvania, an Upper Austral region. There is also in southern New Jersey an extension of certain elsewhere Lower Austral species, although in the great majority of the forms the region is clearly Carolinian. The control governing the distribution of these species is probably environment, as the sands and gravels of southern New Jersey are in general similar to those of the Coastal Plain to the south. Origin of the Orthopterous Fauna of the Southeastern States. We have made some tabulations bearing on the probable origin 1916.1 NATURAL SCIENCES OF PHILADELPHIA. Ill of the Orthopterous fauna of the region studied. It is essential, however, for a proper understanding of the subject, to have similar data on the fauna of the Gulf Coast and Texas, in order to make definite or conclusive generalizations. The material from which such data can be obtained is now available, but it will be some years before our studies will permit us to make the desired tabulations. In consequence any expressions on the question of origin would be premature and certainly require amplification, if not revision, within a relatively short time, as the Gulf Coast can be expected to supply much of the really vital information on origin and dispersal. We propose, therefore, to discuss at a later date, as a whole, the information on this subject for the Southern States. Systematic Treatment of Species. DERMAPTERA. LABIDURID^]. Anisolabis annulipes (Lucas). North Carolina. Macon, VII, 30-31, 1913, (R. & H.), 19 4 juv 9 Raleigh XI. 25 1904, (C. Pinkus), Alban'y> yill, 1, 1913, (R. & H.), 1 9 . w • tl [ i, ty 7 iai ! m i*n^ Bainbridge, (J. C. Bradley), 1 juv. 9 . \\ nghtsville, IX, 7, 1911, (R. & H.), BiUy>s Island; yi, 12, 1912, (J. C. 1 cf, 1 9. Bradley), 19. Camden, II, 15 to 25, 1 cf, [M. C. Z.]. Columbia, VII, 28, 1913, (R. & H.), Florida. 1 9 ; VIII, 16, 1903, (A. P. Morse), Atiantic Beach, VIII, 25, 1911, (R. & 1 9. H.), 1 9. Charleston, 19, [M. C. Z.]. Jacksonville, (T. J. Priddey), 1 d\ Georaia 19' tHebard Cln-1; m- 1900» 1 ljeor9ia- [U. S. N. M.]. Augusta, VII, 29, 1913, (R. & H.), Indian River, 1896, (T. J. Priddev), 1 juv. 9 . 19, [Hebard Cln.]. AVe have before us a male specimen taken by the senior author at Philadelphia, on August 9, 1902, in the back yard of the Academy; there is also a female from Washington, District of Columbia, in the National Museum without further data. The species is doubtless widely distributed by commerce; it has in recent years been found to have an extensive distribution throughout the Lower Austral and Subtropical Zones of the southeastern United States. At two localities the species was found under signs, on oak (Albany) and sweet gum (Augusta). The majority of the above series was found under debris on the ground. 112 PROCEEDINGS OF THE ACADEMY OF [April, Anisolabis maritima (G6n6). Virginia. Fortress Monroe, 2 juv. 9 , [U. S. N. M.]. North Carolina. Newbern, (A. S. Bickmore), 1 d\ (M. C. Z.]. South Carolina. Charleston, 1 9, [M. C. Z.]. Georgia. St. Simon's Island, IV-V, 1911-12, (J. C. Bradley), 3 9, 1 juv. 9; VIII, 30, 1911, (R. & H.), 1 juv. 9. Florida. Fernandina, (W. H. Finn), 1 juv. 9, [U. S. N. M.]. Jacksonville, (T. J. Priddev), 1 juv. 9, [Hebard Cm.]. St. Augustine, (C. W. Johnson), 1 9 , 1 juv. c\ [Morse Cln.]. Crescent City, 1 juv. 9 , [U. S. N. M.]. Cedar Keys, 1 juv. 9 , [U. S. N. M.]. Indian River, 1896, (T. J. Priddev), 1 9 , [Hebard Cln.]. Labidura bidens (Olivier). South Carolina. No further data, (A. Agassiz), 1 d\ [M. C. Z.]. Georgia. Brunswick, V. 2, 1911, (J. C. Bradley), 1 cf, 19. Bainbridge, IX-X, 1910, (J. C. Brad- ley), 1 d\ 6 9, 3 juv. 9. Spring Creek, VI, 7-22, 1911, (J. C. Bradley), 1 juv. 9 ; VIII, 26-28, 1913, (J. C. Bradley), 1 d1, 2 9. Florida. St. Augustine, (C. W. Johnson), 1 juv. 9, [Morse Cln.]. LABIID^B. Vostox brunneipennis (Serville). Maryland. Baltimore, 1 9, [M. C. Z.]. North Carolina. Tryon, (W. F. Fiske), 1 o\ [U. S. N. M.]. Georgia. Rabun County, VII, 1910, (W. T. Davis), 1 cf . Cave Spring, 1 juv. 9 , [Ga. State Cln.]. Atlanta, VIII, 28, IX, 5, 1910, 2 d\ 1 9 , [Ga. State Cln.]. Okeefenokee Swamp, V, 9, 1911, (J. C. Bradley), 1 9 . Florida. St. Augustine, (C. W. Johnson), 2 9 , [Morse Cln.]. Palatka, II, 1868, 1 d\ 1 juv. 9, [M. C Z 1 Ormond, 19,1 juv. 9 , ]M. C. Z.]. Savannah, (W. F. Fiske), 1 d\ [U. S. Enterprise, V, 17, 1 9 , [U. S. N. M.j. N. M.]. The normal type in males of this species is one which has a single inner tooth situated at the end of the proximal third of the forceps; one of the males from Atlanta has the inner enlargement of the forceps continued to a point a little distad of the middle, terminating there in a double tooth. At Tryon and Savannah the species was found on oak. Labia minor (Linn»us). Atlanta, Georgia, XI, 5, 1910, 2 d", [Ga. State Cln.l. Unadilla, Ga., VI, 25, 1910, (J. C. Bradley), 1 9 . 1916.] NATURAL SCIENCES OF PHILADELPHIA. 113 Prolabia unidentata (Beauvois). North Carol in a. Wilmington, IX, 8, 1911, (R. & H.), 1 Wrightsville, IX, 7, 1911, (R. & II.), 5 ',29. Lake Waccamaw, IX, 8, 1911, (R. & H.), 5 cf, 19, 1 juv. 9. Georgia. Vienna, VI, 30, 19,1 juv. 9, [Ga. State Cln.]. Spring Creek, VI, 1911, (J. C. Brad- ley), 1 9 : VIII, 26-28, 1913, (J. C. Bradley), 3 cf . Billy's Island, VI, 1912, (J. C. Brad- ley), 1 StSe MountS'viII, 16, 1913, (J. C. 2 » ■ Bradlev), 19. ™ ., Egypt, (W. H. Finn), 19, [U. S. tlorida. X. M.]. Ortega, IX, 6, 1913, (W. T. Davis), o 29. The Spring Creek male has the disk of the pronotum decidedly rufescent mesad and moderately infuscate laterad, well contrasted with the clear ochraceous lateral sections of the pronotum. The range of the species is now known to extend northward as far as Anglesea, New Jersey (1 c? ; Acad. Nat. Sci. Phila. Cln.), its limits in that direction being much the same as those of /. divisa, but in the southeastern States it apparently ranges higher, crossing the Pied- mont region and entering the mountainous section (Clayton, Georgia, Sulphur Springs and Tryon, North Carolina). The specimens listed above secured by the authors were taken from under the bark of dead short-leaf pine (Goldsboro and Florence) and sweet gum logs and stumps (Lake Waccamaw) and from under signs on red oak (Charlotte). Ischnoptera uhleriana uhleriana Saussure. Arlington, Virginia, VII, 9, 1914, (H.), Clayton, Georgia, 2,000-3,700 feet, VI, 2 cf, 2 9 . 1909, (W. T. Davis), 2 d>. The Clayton specimens are typical uhleriana and the locality is the most southern from which true uhleriana is known. This is also the first record of typical uhleriana from Georgia. The Arlington individuals were taken at night on road and resting on woods foliage. Ischnoptera uhleriana fulvescens Saussure and Zehntner. South Carolina. Honey Island, June 1, 1912, (J. C. Cotobia, VII, 28, 1918. (E. 4 H.), B5g;^K &,ey), 1 9 -I- ¥ . o : r* l. itt t oo ■xttt ic on Georgia. Macon, VII, 30-31, 1913, (R. & H.), 2 9,1 juv. Spring Creek, VI, 7-23, VII, 16-29, 1912, (J. C. Bradley), 1 d\ 1 9 . Florida. Vienna, VI, 5 1910 1 d \ [Ga St .Cln ]. 0rtega, IX, 6, 1913, (W. T. Davis), Brunswick, \ III, 30, 1911, (R. & H.), i o c, l &• , t i ,-ttt oo ,«,, Atlantic Beach, VIII, 25, 1911, (R. & St. Simon's Island, VIII, 30, 1911, H) x ^ 59 R-!?.,AtWvtvtt 1010 ,t r Pablo' Beach, IX, 5, 1913, (W. T. Billys Island, M-\ II, 1912, (J. C. Davis) 2 9 2 juv. Bradley), 1 cf, 2 juv. The personally collected material listed above was secured from under bark of a pine log (Brunswick), among dead leaves under 9 118 PROCEEDINGS OF THE ACADEMY OF [April, live oaks (St. Simon's Island), under same on edge of oak and short leaf -pine woods (Macon) and from under refuse (Atlantic Beach). Ischnoptera borealis Brunner. Goldsboro, North Carolina. VII, 25, Rabun County, VII, 1910. (W. T. 1913 (R & H ) 2 9 JDavis), 3 9 . ' { j' V- Atlanta, VII, 31, 1910, 1 d\ [Ga. St. Georgia. Cln.]. Clayton, 2,000-3,700 feet, VI, 1909, (W. T. Davis), 1 9 . These records are the first for the species from Georgia. At Goldsboro it was found under debris in dead short-leaf pine needles. Ischnoptera bolliana Saussure and Zehntner. Clayton, Georgia, 2,000-3,700 feet, VI, Rabun County, Ga., VII, 1910, (W. T. 1909, (W. T. Davis), 1 o\ Davis), 1 9 . Ischnoptera insolita Rehn and Hebard. Spartanburg, South Carolina, VIII, 6, 1913, (H.), 1 9 . This specimen is perfectly typical of this very rare and little-known species. The tegmina surpass the apex of the abdomen by nearly the pronotal length. Tryon, North Carolina and Spartanburg are the only localities east of the Appalachians at which the species has been taken. The present specimen was secured from under a sign on a tree. Blattella germanica (Linnaeus). Atlanta, Georgia, IX, 5, 1910, I'd1, Waycross, Georgia, IX, 10, 1910, 19, [Ga. St. Cln.]. " [Ga. St. Cln.]. Ceratinoptera diaphana (Fabricius). Billy's Island, Georgia, VII, 1912, Newberry, Florida, XI, 19, 1911, (W. T. (J. C. Bradlev), 1 juv. 9 . Davis), 1 juv.d% 1 juv. 9 . Flovd's Island, *Ga., XII, 27-30, 1913, (J. C. Bradley), 19. The immature specimens are easily determinable, as the distinctive color pattern of the young of this species makes recognition certain. The Billy's Island individual is much more immature than the others, being but little more than half their size. These records are the most northern ones for this beautiful type, which was previously known from within the United States only from Gainesville, Key West and Long Key, Florida. Cariblatta lutea lutea (Saussure and Zehntner). North Carolina. Fayetteville, IX, 9, 1911. (R. & H.)r 1 juv. Roanoke Island, VII, 25, (G. P. Wrightsville, IX, 7, 1911, (R. & H.), Englehardt), 1 9, [B. I.]. 1 juv. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 119 Georgia. St. Simon's Island, IV, 22-V, 12, 1911, (J. C. Bradley), 2 9 . \\ arm Springs, \ III, 9-10, 1913, (R.), Billy's Island, VI, 1912, (J. C. Brad- 1 9 , 1 juv. iey) 2 9 . Thompson's Mills, (H. A. Allard), Suwannee Creek, VIII, 28, 1911, 1 . Augusta, VII, 29, 1913, (R. 1 juv. d\ Crescent City, 1 d\ [U. S. N. M.]. Buckhead, VIII, 2, 1913, (R. & H.), Punta Gorda, XI, 14, 1911, 1 cf, I juv. 9. [Davis CIn.]. A study of the literature on the genus Oligonyx has brought to light several interesting features. In 1870, Saussure briefly de- scribed Oligonyx scudderi,9 giving North America as the locality; this is explained by his remark the following year10 under this species: "Habite. Probablement l'Amerique meridionale (Etiquetee de Georgie, sans doute par erreur)." Later knowledge of the species' distribution shows conclusively that Saussure's type was very prob- ably correctly labelled. In 1877, Stal recorded as this species speci- mens from Texas, which belong to the western type discussed below, and described Oligonyx uhleri from Louisiana as new, stating that this species is "extremely near scudderi, something larger, tegmina and wings more obscure, distinctly infuscated, limbs longer." None of these characters are of sufficient importance in this insect to be con- sidered of specific value, for the size and limb length are shown to be variable in the series of 43 adult males before us, and the individuals from the dryer western localities differ only from eastern examples in having the tegmina and wings less darkened and in a few other minor respects. Stal named the more eastern representative, and hence his name falls as an absolute synonym of O. scudderi. Saussure and Zehntner have described representatives from Dallas, Texas, and Northern Mexico as Oligonyx bollianus,11 hence the western type, if sufficiently distinct to warrant racial separation, would be called O. scudderi bollianus S. and Z. The species was found running on bare ground (Dalton, Sharp Mountain), on ground in pine and oak woods (Warm Springs), in oak woods (Buckhead), in swampy spot in short-leaf pine woods (Yemassee) and was beaten from wire grass and undergrowth of long-leaf pine woods (Albany). 9 Mitt. Sclav. Eni. Gesellsch., Ill, p. 239, (1870). "Mem. VHist. Nat. Mex., Mant. Amer., p. 121, (1871). II Biol. Cent.-Amer., Orth., I, p. 173, (1894). 124 PROCEEDINGS OF THE ACADEMY OF [April, Thesprotia graminis (Scudder). Georgia. Isle of Hope, IX, 3, 1911, (R. & H.), 19. Jesup, IX, 1, 1911, (R. & H.), 1 9 . St. Simon's Island, VIII, 30, 1911, (R. &H.),2 9, 1 juv. 9. Cumberland Island, VIII, 31, 1911, (R. &H.), 1 cf, 3 9. Homerville, VIII, 27, 1911, (R. & H.), 19. Albany, VIII, 1, 1913, (R. & H.), 1 9 . Florida. Jacksonville, IX, 28, 1913, XI, 3, 1911, (W. T. Davis), 3 juv. cf ; VIII, 25, 1911, (R. & H.), 1 9. Atlantic Beach, VIII, 24, 1911, (R. & H.), 1 cf, 4 9. Live Oak, VIII, 10, 1903, (A. P. Morse), 1 cf , 3 juv.; VIII, 26, 1911, (R. &H.), 1 cf, 19. Crescent City, 1 cf, 1 9, [U. S. N. M.]. Newberry, XI, 18, 1911, (\Y. T. Davis), 19. The largest female before us, 52.4 mm. in length, is from Atlantic Beach. This species is found generally distributed, but never in numbers, in the undergrowth of the pine forests of Georgia and Florida in decided Sabalian (see preface) surroundings. Isle of Hope is the most northern locality recorded for the species, but it will doubtless be found in southern South Carolina and as far northwest- ward in Georgia as the limit of the Sabalian element. The male from Live Oak was taken when flying through the pine woods, its feeble fluttering flight resembling that of a myrmelion. At Atlantic Beach several specimens were found in a tangle of raspberry vines and other plants, under cabbage palmettoes in the "hammock." PHASMID^] Diapheromera femorata (Say). Virginia. Great Falls, IX, 28, 1913, (C. T Greene), 2 cf, 1 9, [Hebard Cln.]. Orange, VII, 21, 1913, (R. & H.), 1 cf, 2 juv. 9. North Carolina. Topton, VIII, 21, 1903, (A. P. Morse), 1 cf. South Carolina. Greenville, 1887, 1 9 , [A. N. S. P..]. Columbia, VII, 28, 1913, (R. & H.), 1 juv. cf . Georgia. Clayton, VI, 1909, (W. T. Davis), 2 juv. cf . Toccoa, VIII, 4, 1913, (H.), 1 juv. 9 . Dalton, VIII, 7, 1913, (R.), 2 juv. 9 . Sharp Mountain, VIII, 6, 1913, (R.), 1 juv. Jasper, VIII, 5, 1913, (R.), 4 juv. cf , 3 juv. 9 . Sand Mountain, VIII, 26, 1903, (A. P. Morse), 1 cf , 1 juv. 9. Buckhead, VIII, 2, 1913, (R. & H.), 1 juv. cf , 3 juv. 9 . Vicinity of Stone Mountain, VIII, 3, 1913, (R. & H.), 3 juv. cf , 1 juv. 9 . Warm Springs, VIII, 9, 1913, (R.), 2 juv. 9. Macon, VII, 30-31, 1913, (R. & H.), 3 juv. cf, 2 juv. 9. Albany, VIII, 1, 1913, (R. & H.), 2 cf , 2 juv. cf , 3 juv. 9. Lakeland, Decatur County, 1 cf , [Ga. St. Cln.]. Specimens from southern Georgia are very large, the largest male (Albany) is 84.5 mm. in length; however, no racial characters exist. The species has not been taken south of the fall line in the south- eastern United States until extreme western Georgia and north- 1916.] NATURAL .SCIENCES OF PHILADELPHIA. 125 western Florida is reached. The material recorded by us from the above localities was all taken in the undergrowth of pine and oak woods. Manomera tenuescens (Scudder). 1913. Manomera orthostylus Caudell, Proc. U. S. Nat. Mus., XLIV, p. 612, fig. 27. [Orlando, Florida.] North Carolina. Homerville, VIII, 27, 1911, (R. & II ^'i'juv^1' ?' 1903' (A' P' MOTSe)' Cumberland Island. VIII, 31, 1911, Winter Park, IX, 7, 1911, (R. & H.), (B" & H-)' 10 ^ ' 5 9- - 3 9. Florida. S""lh ' '"r"h""- Jacksonville, VIII, 25, 1911, (R. & H.), Denmark, VIII, 15, 1903, (A. P. 19. Morse), 19. Live Oak, VIII, 26, 1911, (R. & H.), Georgia. Augusta, VII, 29, 1913, (R.), 1 9 . Series before us of adults and immature examples of both this species and M. brachypyga,12 prove that M. orthostylus of Caudell, the unique type of which is before us, is an absolute synonym of the present insect, based on a male in the instar preceding maturity. The relative proportions of the distal abdominal segments in both sexes, which readily separate adults of tenuescens and brachypyga, as readily separate immature individuals of the two species. Until the adult condition is reached, the male cerci of both species are straight, pilose and delicate in structure; those of tenuescens being decidedly shorter than the disto-dorsal abdominal segment and those of brachypyga slightly longer than that segment. In the clog fennel, Eupatorium compositifolium Walt., at" Cumber- land Island, a climbing vine, Bradburya virginiana (L.) Kuntze, was frequently encountered; the elongate green pods of this vine, resting in the dog fennel, bore a remarkable resemblance to the bodies of the female walking-sticks there found. The species is decidedly a Lower Austral and Sabalian type, previously known only from Florida. The material before us was found about a sink hole surrounded by a few gum trees in low weeds and plants and scant grasses (Winter Park), in bunch grass in a sandy scrub-oak area just above the fall line (Augusta), on dark wet ground covered with low swamp plants (Homerville), in dog fennel in long- leaf pine woods (Cumberland Island, Jacksonville) and in the low undergrowth of the long-leaf pine woods (Live Oak). 12 Proc. Acad.'Xat. Sci. Piiila., 1914, p. 384, figs. 1 to 4, (1914). 126 PROCEEDINGS OF THE ACADEMY OF [April. Anisomorpha buprestoides (Stoll). South Carolina. Yernassee, IX, 4, 1911, (R. & H.), 1 o\ 1 9, 2 juv. 9. Georgia. Sandfly, IX, 3, 1911, (R. & H.), 1 cf , 19. Brunswick, VIII, 30, 1911, (H.), 1 juv. 9 . Billy's Island, V, 1912, (J. C. Bradley), 19; VI, 1912, (J. C. Bradley), 1 juv. d\ 2 juv. 9 ; IX, 1-5, 1913. (J. C. Bradley), 3 IX' l~3> 1903> Pemberlon NV S2P1913, (H. B. Scam- *%™£%> J\f 1907' (B' L°^> StaSrk2 F'olge SVniM-2]6-31, 1907, T^f'S ? ' * ** * ? ' ^ ^ ^ (R.), 19,1 juv. cf, 1 juv. 9 ; IX, 16, ' ,J' 1905 (EL), 5^,49; IX, 31, 1908, Maryland. (R.), 1 & , 1 juv. 9. tf Parkdale, VII, 30, 1911, (R. & H.), Jennings, 2,000 feet, middle of VIII, 1 cf. 1911, (W. Stone), 1 juv. 9, [A. N. Da Costa, V, 17, 1903, (E. Daecke,) S. P.]. 1 cf, [Hebard Cln.]. NoHh CaroUna_ Pennsylvania. Mount Pisgah, 4,500 feet, X, 1, 1904, South Sterling, IX, 17, 1906, (B. (H.), 1 juv. 9. Long), 1 (°. F. Crumb; on i^i m a m tu i ' ' a tobacco seed bed and hibernating Ltf, IU.B. IN. M.J. [HI) 19] in leaves)> 2 ^ g 9j Virginia. [U. S. N. M.]. Glencarlyn, IV, 27, 1913, (A. N. Georgia. Caudell), lcf, [U. S. N. M.]. Clayton, 2,000 feet, V, 18-26, 1911, Washington, VI, 5, 1909, (A. K. (J. C. Bradlev), 2 tu- s- N- M-l- V. 18, 1912, (E. R. Casey), 1 juv. 9 . [Casey Cln.] Virginia. Pink Hill, Delaware County, VI, 19, n„„„„„ VTT 01 ,m., /T> s u -. 1908, (R. &H.), 19. Orange^^II, 21, 1913, (R. & H.), New Jersey. ' Fredericksburg, VII, 20, 1913, (R. & Atsion, X, S, 1903, (H.), 1 juv. 9 . H')' 5 cf' 4 9 ' Delaware. North Carolina. Millsboro, (B. Long), 1 o". [A. X. Hendersonville, VI, 1907, (F. Sher- S. P.]. man), 19, [U. S. N. M.]. Maryland. °72?u% V*' 26o 1913' (R" & H°' J 9 c?, 14 9, 1 juv. 9. No further data. 19, type, [A. X. Weldon, VII, 24, 1913, (R. & H.i. S. P.]. 1 cf,19. Plummer's Island, VI, 20, 1909, (W. L. Goldsboro, VII, 25, 1913, (R. & H.), McAtee), 1 9 , [U. S. X. M.]. 9 . Fayetteville, IX, 9, 1911, (R. & H.), Spring Creek, VII, 16-29, 1912, (J. C. 1 9. Bradley), 1 9 . Wrightsville, IX, 7, 1911, (R. & H.), Florida. 2 *' South Carolina. Jacksonville, VIII, 25, 1911, (R. & H.), Manning, V 23 1914, (Witmer Stone), Atlantic Beach, VIII, 24, 1911, (R. & 1 c?, 1.9, [A. N. S. P.]. H) 39 Sullivan Island, IX, 5, 1911, (R. & H.), Fort Reea\ IV, 20, 1876,32 1 9 , [Hebard 10 cf, 10 9, 1 juv. cf, 1 juv. 9. Clnl Yemassee, IX, 4, 1911, (R. & H.), 1 d\ The remarks made under the generic treatment will explain the above synonymy. We find that none of the specimens of the species taken from northern Florida northward are of the form with the caudate pronotum, but that the series from south and central Florida (Hancock's coarctatus) show about 20 per cent, of the caudate type. 32 This specimen is labelled "Batrach. cristata Harris" on one of Scudder's labels in his handwriting. Probably all of the material reported by Scudder from that locality under that name {Proc. Bost. Soc. Nat. Hist., XIX, p. 90, (1877).) should be referred to bolteri. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 145 In the latter lot the proportionate difference in this respect between the sexes is slight. Here, as in femoratus, it is possible that immediate environment is the responsible factor for the development of the caudate type or the alternative abbreviate one. In south and central Florida this species varies away from the more northern type in the slightly more compressed form, the break- ing up of the usually linear, strumose pronotal ridges into less elongate scabrosities, while in the abbreviate individuals the caudal process of the pronotum is more acute. The importance, even relatively, of these differences is discounted when we examine the entire series before us and find that specimens from Sullivan Island, South Carolina, and Wrightsville, North Carolina, are as compressed as the south Florida individuals, while representatives from other Carolina localities are no more strongly strumose, and just as angulate caudad on the pronotum, as in the south and central Florida material. The width of the fastigium and the tegminal length and width vary so individu- ally in a series from any locality, that no diagnostic weight can be placed upon any of these features. In the strongly accentuated condition this species occurs in northern Florida and southern Georgia, north and south of which a certain portion of the material is less strikingly marked, although a large part or the larger part is decidedly typical of the species, but in all of the specimens examined the recognition of the material is not difficult, except in the case of south and central Florida individuals. With these, however, we feel that the characters given in the key will enable the student to separate bolteri from femoratus. Doubtless environment is responsible for most of the differences mentioned above, as it probably is to a degree for size difference, but in this there is much of an individual character, as material from the same environment at the same locality shows. The variation in the form of the frontal costa found in femoratus is parallelled in the present species, the regularly diverging type being the normal form, the scutellate type the exception. The coloration varies as in femoratus, but as a rule to a lesser degree. The range of this species in the southeastern States is now known to extend from Petersburg, Virginia, south to Key West, Florida, west to Pensacola Bay (Warrington and Fort Barrancas), Florida, and in- land as far as Spring Creek, Georgia, and Fayetteville, North Carolina. It is thus seen to be limited to the Lower Austral, Sabalian and Sub- tropical zones, probably ranging to eastern Texas and certainly up the Mississippi Valley as far as southwestern Indiana. Previous to this writing bolteri was only known from Florida. 146 PROCEEDINGS OF THE ACADEMY OF [April, This species occurs in as great a variety of habitats as femoratus, having been taken in marshy sink holes, among grasses in marshy spots near streams and lakes (Petersburg and Fayetteville), in wet weedy spots and among low undergrowth in short-leaf pine woods (Goldsboro and Yemassee), in heavy palmetto and live-oak jungle (Atlantic Beach), among undergrowth on dunes and in bare spots on barrier beaches (Tybee and Sullivan Islands and Wrightsville). Paratettix rugosus (Scudder). St. Simon's Island, Georgia, IV, 22-V, Jacksonville, Florida, (T. J. Priddey), 12, 1911, (J. C. Bradley), 19. 3cf,49, [Hebard Cln.]. We have also examined a pair from Fort Reed, Florida, deter- mined as this species by Scudder. All of the specimens of the present series have the pronotum caudate. Tybee Island and St. Simon's Island are the most northern points in the eastern States from which the species is known. Paratettix CUCUllatUS (Burmeister). Virginia. Tallulah Falls, VII, 1910, (W. T. Orange, VII, 21, 1913, (R. & H.), 2 cf . Davis), 19. Fredericksburg, VII, 20, 1913, (R. & Toccoa, VIII, 22, 1909, 1 cf, [Ga. H.), 8cf, 9 9,8juv. State CM.]. \ icinity of btone Mountain, \ 111, 6, North Carolina. 1913" (R. & H.), 1 9 . Tryon, V, 21 to 31, (W. F. Fiske), Albany, VIII, 1, 1913, (R. & H.), 2 cf, 2 9, [U. S. N. M.]. 4d\-.3 9. Lake Waccamaw, IX, 8, 1911, (R. & Spring Creek, VI, 7-23. 1911; VII, H) \ 27, 1911, (R. & H.), v ,y , ion ,r> x n ^ 6 o", / 9, 3 juv. 9. \emassee, IX, 4, 1911, (R. & H.), 27 cf, 9 9, 23 juv. 9. This aberrant species appears to be a primitive form, as immature 148 PROCEEDINGS OF THE ACADEMY OF [April, examples of T. lateralis showing a somewhat closer structural simi- larity to this species than do adults of that insect. Morse's name elongata was proposed for the individuals of this species having a caudate pronotum; three males and one female from Yemassee, South Carolina, are of this phase. The majority of the adults have the dorsal surface of the pronotum somewhat lighter brown in coloration than the lateral lobes of the same, only seven individuals are unicolorous and darker, while but one female (Homerville) has the dorsal surface of the pronotum unusually pale and tawny-olive in tone. The present insect has been found from Beach Haven, New Jersey, to extreme southern Georgia. Its distribution is discontinuous, though not to the degree of that of Paxilla obesa, for while it has been found to prefer areas in the pine woods of low, blackish, water- soaked ground covered with low bog plants (Wilmington, Yemas- see, Homerville), it has also been taken in various low grasses near " hammock" land (Augusta, Hebardville, Suwannee Creek, Homer- ville) and in swamp grasses along a wooded stream (Fayetteville) . The specimen from Augusta was taken just below the fall line among long-leaf pines. Tettigidea spicata Morse. Florida. Alabama. Florida, (Morrison), 6 9, type, para- Alabama, (Morrison), 2 c? , 4 9, type and series taken with these, [Hebard Cln.]. [Hebard Cln.]. T ■ • Jacksonville, (T. J. Priddey), 2 9, „ _. ^omstana ^ [Hebard Cln.]. ^*ew Orleans, (Coleman), 2 9 , [Hebard Pablo Beach, IV, 8, (P. Laurent), 1 9 , Cln-1- [Hebard Cln.]. Morse in his original description gives "intermediate in structure of vertex between apiculata and armata, but. more nearly allied to the latter." This is true in respect to the vertex, but in the total of characters the relationship to apiculata is much more decided, the present insect being apparently a less strongly developed form of a common stock. The more arcuate character of the dorsum of the pronotum in transverse section between the humeral angles is one of the most apparent characters to distinguish this species from T. armata, from which insect it further differs in the characters given by Morse.34 Specimens referred to this species by the authors from the vicinity 3iJour. N. Y. Ent. Soc, III, p. 108, (1895). 1916.1 NATURAL SCIENCES OF PHILADELPHIA. 149 of Thomasville, Georgia, are in the present paper correctly placed under T. armata. A peculiar color type, in which the pronotum has a pale medio- longitudinal marking which is narrowest between the shoulders, l- found in the Pablo Beach specimen. This type of coloration is not found in the races of T. lateralis. In the Sabalian zone the present insect is one of the scarcer species. For the southeastern United States, "Georgia" was the most western locality hitherto known. Tettigidea lateralis lateralis (Say). 1838. T[etrix] polymorpha Burmeister, Handb. Entom., II, Abth. 2, Pt. 1, pp. 659-800. [South Carolina.] 1902. Tettigidea medialis Hancock, Tettig. X. Amer., p. 152. [Southern Illinois; Missouri; Tennessee; Louisiana.] New Jersey.35 Ortley, IV, 10, 1903, (H. L. Viereck), 1 d\ [A. N. S. P.]. Stafford's Forge, IX, 10, 1905, (H.), 2 J, 49. Atsion, X. S, 1903, (H.j. 2 9. Ocean City, IV, 19, 1903, (H. L. Viereck), 3 9, [A. X. S. P.]. Cape May, VII, 4, 1908, (H. L. Viereck), 1 cf, [A. X. S. P.]. Delaware. Rehoboth, VI, 8, 1908, (B. Long), 1 cf , [A. X. S. P.]. Maryland. Chestertown, VIII, 18, 24, 27, 1899, (E. G. Vanatta), lo",29,l juv. 9 , [A. N. S. P.]. Hyattsville, VIII, 14, (A. X. Caudell), 1 juv. 9, [U. S. X. M.]. Washington, D. C, IV, IX, 1883-84, 13 cf, 14 9, [Hebard Cln.]. Virginia. Franklin City, VI, 24, 1907, (B. Long), 5 cf , [A. X. S. P.]. Fredericksburg, VII, 20, 1913, (R. & H.), 5 cf, 4 9, 2 juv. cf, 3 juv. 9. Orange, VII, 21, 1913, (R. & H.), 1 d\ 2 9,3 juv. 9 . Petersburg, VII, 23, 1913, (R. & H.), 6 cf, 6 9, 1 juv. 9. Lvnchburg, VII, 22, 1913, (R. & H.), 1 juv. 9 . Xorth Carolina. Weldon, VII, 24, 1913, (R. & H.), 1 cf, 19. Goldsboro, VII, 25, 1913, (R. & H.), 7 cf, 3 9, 4 juv. 9. Greensboro, VII, 26, 1913, (R. & H.), 3^,29. Favetteville, X, 9, 1911, (R. & H.), 2 cf, 19, 3 juv. 9. Charlotte, VII, 27, 1913, (R. & H.), 39. Wilmington, IX, 8, 1911, (R. & H.), 2 30' 1913' (R" & H)' 1 " iuv % 4 iuv 9 2 jUV- <*•' 2 Juv- 9 • - JUV- (R & H); r, 4 juv. d\ heorSia- Sandfly, IX, 3, 1911, (R. & H.), 2 Augusta, VII, 29, 1913, (R. & H.), juv. d". 5 juv. d\ 3 juv. 9 . Jesup, IX, 1, 1911, (R. & H.i, 2 juv. d\ Warm Springs, 850-1,200 feet, VIII, 1 juv. 9 ; XII, 1908, (H.), 1 juv. J1, 9-10, 1913, (R.), 5 juv. d% 9 juv. 9 . 1 juv. 9 . 154 PROCEEDINGS OF THE ACADEMY OF [April, Brunswick, VIII, 30, 1911, (H.), 1 juv. 9 . Homerville, VIII, 27, 1911, (R. & H.) 2 juv. d\ 5 juv. 9. Hebardville, V, 15, 1915, (H.), 6 , 2 d\ 5 juv. cf. Warm Springs, VIII, 9-10, 1913, (R.), 1 . Length of tegmen..' 21.9 15.7 It). 7 21.5 Pablo Beach, Cedar Keys, Galveston, Fla. Fla. ' Tex. c? o". 9 o" 9 Length of body 20.3 20. 27. 18.5 23.7 Length of pronotum 4.1 4.1 5. 3.8 4.5 Length of tegmen 18.1 16.9 22.8 . 16.3 18.6 Virginia Point, Corpus Christi, Tex. Tex. <7 9 9 Length of body 21.1 27.5 26.8 Length of pronotum 5.2 5.3 5. Length of tegmen '. 17.5 23.4 20.8 The Isle of Palms male was taken among the dunes of a barrier beach, entirely away from the true salt-marsh habitat, which may account for the small size of the specimen. The specimens from the vicinity of salt pans with Salicomia and similar vegetation, a type of situation where the species occurred at Galveston and Corpus Christi, exhibit, as the measurements above show, a somewhat depauperate form when compared with specimens from the salt marsh, which is the typical habitat of the species. Apparently the action of environ- ment is seen in these beach specimens in the reduction of wing length and to a certain degree in the coloration, both of which are similar to the condition found in the allied 0. halophila, which as far as known invariably frequents the vicinity of salt pans. Tegminal length as a general thing is a somewhat variable factor in 0. olivacea, the Tybee series showing one female with a body length of 33.3 mm. and a tegminal length of 25, while in this respect almost as much variation either way from the measured specimen is found in the same sex in the Virginia Point series. The general bulk and pronotal length, however, follow the rule laid down above, the influence of a somewhat changed environment on the beaches and flats resulting there in a general size reduction, accompanied by a tegminal abbre- viation much as in 0. halophila which frequents the same habitat. The range of this species, so far as known, does not extend south of Cedar Keys, Florida, and Corpus Christi, Texas, at the latter locality the species occurring with 0. halophila (see below), which replaces it southward. Texan olivacea are inseparable from eastern coast specimens, and similarly south Florida and south Texas halophila are inseparable. 12 166 PROCEEDINGS OF THE ACADEMY OF [April, At Wrightsville, Tybee Island, Sandfly and Virginia Point, this species was found in salt marsh, associated with 0. pelidna at the first two localities, while at Galveston and Corpus Christi it fre- quented the flats and pans with Salicornia and similar vegetation. Orphulella halophila new species. PL XII, figs. 6, 7, 8. 1912. Orphulella pelidna Rehn and Hebard, Proc. Acad. Nat. Sci. Phila., 1912, p. 253. (In part.) [Records from Key West, Boot Key and Key Vaca refer in part to halophila.] Allied to 0. olivacea (Morse), but differing in the more robust form, the never strongly elongate tegmina, the shorter pronotum, the more arcuate lateral carina of the pronotum and more inflated caudal femora. Type: 9 ; Key West, Monroe County, Florida. July 3-7, 1912. (Rehn and Hebard.) [Hebard Collection, Type No. 31.] Description of Type. — Size medium; form moderately robust, subcompressed. Head with occiput and interocular region regularly arcuate when seen from the side, width of the interocular space hardly narrower than the greatest fastigial width; fastigium much broader than long (from cephalic margin of eyes), rectangulate in outline, moderately impressed in a rather narrow subarcuate area but little removed from the margin (fig. 7) ; when seen from the side the fastigio-facial angle is moderately rounded, lateral foveolse very elongate trigonal, well impressed; facial outline regularly though but moderately oblique; frontal costa narrow at juncture with fastigium, regularly widening ventrad, weakly sulcate dorsad of the median ocellus; eyes one and one-half times as deep as the infra- ocular sulcus is long, subovoid in shape, but moderately prominent when seen from the dorsum; antennae slightly depressed proximad, faintly tapering distad, considerably shorter than the head and pronotum together. Pronotum with the greatest width across ventral portion of the lateral lobes subequal to the greatest dorsal length of the disk; lateral carinae moderately converging caiidad to the second transverse sulcus, thence diverging caudad, both sections slightly arcuate (fig. 7) ; cephalic margin of disk subtruncate, caudal margin of disk obtusely arcuate; median carina of pronotum well and evenly elevated, severed by the principal transverse sulcus slightly caudad of the middle. Tegmina just reaching the tips of the caudal femora, apex broadly rounded, when seen from the lateral aspect and in repose the costal margin and the dorsal line of the tegmen subparallel except for the slight proximal lobe; ulnar area completely divided in two by a longitudinal spurious vein and in 1916.] NATURAL SCIENCES OF PHILADELPHIA. L67 consequence with a double scries of cells; discoidal area faintly narrowing distad, with irregularly arranged small cells and showing but faint indications of an intercalary vein. Interspace between the mesosternal lobes quadrate, slightly longitudinal; interspace between the metasternal lobes smalj, narrowed caudad, subcuneate. Caudal femora moderately robust, the greatest depth contained four times in the length; caudal tibiae with eleven spines on the external margin. Allotype: d" ; same data as type. [Hebard Collection.] Description of Allotype. — Differing from the description of the type in the following particulars, aside from the usual sexual differences. Size small. Head with impressed area of the fastigium more extensive caudad; fastigio-facial angle more obtuse-angulate, facial outline when seen from lateral aspect slightly more oblique; frontal costa nearly subequal in width between the antennal bases and the median ocellus, sulcate throughout, but more distinctly so dorsad; eyes nearly twice as deep as the infra-ocular sulcus is long, while prominent, still slightly compressed when seen from the dorsum; antennae in length very faintly exceeding that of the head and pronotum together. Pronotum very slightly narrower; lateral carinae subobliterated between the first and second transverse sulci. Tegmina slightly surpassing the tips of the caudal femora; ulnar area with large but irregular cells, without a distinct spurious vein; discoidal area as in female. Interspace between mesosternal lobes distinctly longitu- dinal; metasternal lobes attingent caudad. Caudal femora with the greatest depth contained three and one-half times in the length; caudal tibiae with eleven spines on the external margin. The coloration of this species runs through the whole gamut of units or phases found in certain other members of the genus, as 0. pelidna, showing much greater diversity than in the more closely allied 0. olivacea. It seems unnecessary to more than summarize the more striking of these units, between all of which there seem to be regular intermediates. The males are much more uniform in their coloration than is the case in the female sex. The green extreme unit has the base color clear dull green-yellow (Ridgway) to chal- cedony yellow, running to apple green and even rejane green, the discoidal area of the tegmina with quadrate maculations of fuscous, a distinct postocular suffusion present on head, dorsal portion of lateral lobes and caudo-lateral portions of pronotal disk, the ventral portions of the lateral lobes with or without fuscous linings and hoary tints, the accessory lines on the occiput and femoral bars also 168 PROCEEDINGS OF THE ACADEMY OF [April, variable in presence or absence and solidarity. The brown extreme is heavily mottled and suffused fuscous on a tawny-olive ground, the dark markings around the lateral carinae of the pronotum strik- ingly velvety black, the markings of the lateral lobes, tegmina and femora not pronounced. Between these two extremes runs a series of about five phases, each sufficiently distinct to the eye to be readily recognizable. In one the color is uniform honey-yellow with almost no markings, another is similar with the dark markings around the lateral carinae velvety black and a narrow postocular bar fuscous, with faint indications of tegminal maculations and a faint greenish wash on the dorsum of the pronotum. Another has the whole pat- tern, i.e., femoral markings, linings on lobes and pleura, dark areas about carinae and very weak occipital lines and tegminal maculations, indicated, but also entirely washed with ochraceous-salmon. Another phase, apparently unusual, as it is seen only in males from Point Isabel and a female from Boot Key, has the markings similar, but is unsuffused and the base color is quite pale, in fact light buff. The last of these phases is near the brown extreme, but it has the tegminal markings decided and the base color somewhat paler. In addition there crops out in three of the phases that peculiar wash- ing of all or parts of the tegmina, and occasionally part or all of the pronotum, with rich purple seen in a number of the species of this very variable group. The type belongs to the green extreme and the allotype is of a brownish phase which predominates in the' male sex. Correlating the material by locality for possible color relation to environment is productive of little positive data, as the more extreme color phases are usually from localities represented by uniques or very small series, while the extensive Key West series (thirty-four specimens) shows very great diversity in itself. The pale markings on the lateral carinae of the pronotum, frequently broken mesad, are the most striking constant color feature of the species. Measurements {in millimeters). Length of Length of Length of cf body. pronotum. tegmen. Key West, Fla., Allotype 17.5 3.5 13.4 Key West, Fla., Paratype 18.7 3.7 15. Key West, Fla., Paratype 19. 3.5 14.2 Key West, Fla. , Paratype 18. 3.5 14.4 Corpus Christi, Tex 18.8 3.8 15.5 Corpus Christi, Tex 17.5 3.5 15. Corpus Christi, Tex 18.2 3.5 14.3 Length of caudal femur. 9 10. 10. 10. 11. 11. 11.5 1916.] NATURAL SCIENCES OF PHILADELPHIA. 1G9 Length of Length of Length of Length of caudal 9 body. pronotum. tegmen. femur. Key WVm, Fla., Type 24.5 4.7 18. 13.9 Key West, Fla., Paratype 24.3 4.5 16.9 12.9 Key West, Fla., Paratype 21.5 4.5 17. 13. K«v West, Fla., Paratvpe 25.6 4.8 20. L4.2 Corpus Christi, Tex 23.3 4.3 19.2 14.1 Corpus Christi, Tex 26.3 5.1 20.7 15.5 Corpus Christi, Tex 26. 4.8 20. 15.2 It will be seen from the above measurements that the Texan material has slightly longer femora in both sexes, but the difference is extremely slight. The fastigium varies considerably in the degree of angulation, particularly in the male sex, occasionally being dis- tinctly acute-angulate in that sex, while in the female it sometimes is faintly obtuse-angulate. The lateral carinse of the pronotum vary much as they do in 0. olivacea, being more inbowed in some specimens than in others, in fact almost subparallel cephalad in occasional individuals, while very frequently in the males and less frequently in the females they are distinctly subobsolete between the first and second transverse sulcus. The individual variation in tegminal length is less than usual in the present genus. We have before us a series of seventy-one specimens of this inter- esting species. The localities represented and data on the material are as follows : Punta Gorda, Florida, XI, 16, 1911, Key West, Fla., I, 20, 1904, (H.); (W. T. Davis), 1 9 . Ill, 15-16, 1910, (H.); VII, 3-7, Marco, Fla., IV, 17 and 20, 1912, 1912, (R. & H.), 12 c?\ 22 9, type, (W. T. Davis), 1 cf, 3 9 . allotype and paratvpes. Key Vaca, Fla., Ill, 14, 1910, (H.), Corpus Christi, Texas, VII, 29, 1912, 1 o". (H.), 9 3 cf, 3 9. Petersburg, VII, 23 1913, (R. & H.), ^ Car(Mna Cf' ' JU Florence, IX, 6, 1911, (R. & H.), 2 cf. North Carolina. Manning, V, 23 and 30, 1914, (W. Weldon, VII, 24, 1913, (R. & H.), Stone), 1 juv. d\ 1 juv. 9 , [A. N. 2 d\ 19. S. P.]. 46 Can. Ent., XXXI, p. 180, (1899). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 171 Yemassee, IX. 1, 1911, (R. & H.), 2 cf, 3 9. Georgia. Augusta, VII, 29, 1913, (R. & H.), 2 d\ 19, 1 juv. 9. Macon, VII, 30-31, 1913, (R. & B.), l Columbus, VII, 16, 1913, 1 d\ [Ga. State Cln.]. Oglethorpe, Macon County, VII, 1 and 31, 1910, (J. C. Bradley), 1 d\ 19. Albanv, VIII, 1, 1913, (R. & H.), 5 9, 1 juv. 9. 'niton. IX, S, 1910, (J. C. Bradley), 1 o". Spring Creek. VIII, 26-28, 1913, (J. C. Bradley), 19. Bainbridge, V, 31-VI, 1, 1911; VII, 15, 1912; IX. 17-X, 19, 1910, (J. C. Bradley), 3 o", 69. Hoinerville, VIII, 27, 1911, (R. & H.), 2 d1, 49. Billy's [sland, VI-VII, 1912; IX, 1-5, XII, 20, 1913, (J. C. Bradley), 8 d\ 10 9 , 1 juv. 9 . .Ionian's, Billy's [sland, VIII, 31, 1913, (J. C. Bradley), 1 d". Jesup, IX, 1, 1911, (R. & H.), 4 d\ 59; XII, (II.), 1 9. Brunswick, VIII, 30, 1911, ill.), 19. St. Simon's Island. VIII. 30, L911, (R. & II.), 19; IX-X, 1910, 1 d\ 1 9, IGa. State Cln.]. Cumberland Island. VIII, 31, 1911, (R. & H), 4 d", 2 9. Florida. Jacksonville, VIII, 25. 1911, (R. & EL), 19; VIII, 1885, (W. H. Ashmead), 10 d\ 89, [Hebard Cln.]; XI, 5, 1911, (W. T. Davis i, Id1, 29. South Jacksonville, IX, 7, 1913, (W. T. Davis), 1 d1, 2 9. Ortega, Duval County, IX, 6, 1913, (W. T. Davis), 1 d1. Atlantic Beach, VIII, 24-25, 1911, (R. &H.), 8 d1, 12 9. Pablo Beach, IX, 5 and 27, 1913, (W. T. Davis), 5 d\ 79. Live Oak, VII, 26, 1911, (R. & H.), 3 o*. An examination of the above series and material from the north- eastern States shows that as a rule the fastigium is blunter in the more southern specimens, particularly in the female sex. Occasional individuals from Georgia localities have the angle of this same region similar to that found in Pennsylvania and New Jersey specimens, but by far the majority show a distinct broadening of the fastigium. The size varies individually in any considerable series and there appears to be no geographic tendency in this feature. There is a slight preponderance of the green phase, while the brown individuals show a maculate, a simply punctulate and a plain form. The green phase males show a decided amount of variation in the infuscation of the lateral aspect, this being almost blackish in certain specimens (Oglethorpe, Billy's Island, Pablo Beach and Atlantic Beach), paling until, in two Lake Waccamaw males, there is no infuscation except the carinal lines and their tegminal continuations. In the present series no specimens are macropterous, the tegmina falling short of the apex of the abdomen in all. The species is a lover of weedy spots, grassy fields and damp overgrown depressions, occurring frequently in abundance. It is occasionally found in grasses in pine woods (Weldon, Goldsboro and Jacksonville). 172 PROCEEDINGS OF THE ACADEMY OF [April, Clinocephalus elegans Morse. 1905. Clinocephalus pulcher Rehn and Hebard, Proc. Acad. Nat. Sci. Phila., 1905, p. 36. [Miami, Florida.] Maryland. Brunswick, VIII, 30, 1911, (H.), 1 d\ Piney Point, VIII, 12, 1880, 19, „ 1 9 • [Hebard Cln 1 Cumberland Island, VIII, 31, 1911, v 'J r ,. (R.&H.),1 juv.9. North Carolina. JesuP) IX, l, 1911, (R. & H.), 21 1 9> tDavls Cln-1- [Hebard Cln.]. South Carolina. Virginia. Spartanburg, VIII, 6, 1913, (H.), GrDavisMS9 YI' 26' 1914' (W' T' 1JUV'9' Geor°ia- Fredericksburg, VII, 20, 1913, (R. & Clayton, 2,000 feet, V, 18-26, 1911, H.), 19,l]uv. c?. . (J- C- Bradley), 2^; VI, VII, Orange, VII, 21, 1913, (R. & H.), 19, 1909-10, (W. T. Davis), 3 ')> 1 l Juv\9- rrr . Montgomery Count v, 4 9 , [Hebard Virginia. Cln.]. Fredericksburg, VII, 20, 1913, (R. & Petersburg, VII, 23, 1913, (R. & H.), H.), 2 d% 2 9 , 2 juv. d\ 2 juv. 9 . 2^, 19. Orange, VII, 21, 1913, (R. & H.), 1 &. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 177 North Carolina. Tuckoluge ('reck, Rabun County, VII, Weldon, VII, 24, 15)13, (R. & H.), T 1910> W- T. Dayis), 3 9 . 1 ', 19, ] juv. d". Jasper, 1,550 feet, Mil, 5, 1913, (R.), Greensboro, VII, 26, 1911, (R. & H.), „, 1 1 I * 9- lr- S- N- M-l- 1 - Rome, VIII, 21, 1910, 1 cf, 19, South Carolina. [Ga. State Cln.]. Florence, IX, 6, 1911, (R. & H.), Bx\ck[1Q%dX VK'vV913, (R" & H'}' j-ijo i a , - v , - juv. ci • Sullivan Island, IX, 5, 1911, (R. & H.), ^iS^^^)^ feet' VU1' 3' r Vicinity of Stone Mountain, VIII, 3, , 9 :r 1913, (R. & H.), 1 cT, 1 9 . Clayton 2,000 feet, V, 18-26, 1911, Gainesville, IV, 12, 1911, (J. C. Brad- (J. C. Bradley), 2 . Macon, VII, 30-31, 1913, (R. & H.), Black Rock Mountain, 3,000 and 3,500 q j eg 1 hiv Q feet, V, 20-25, 1911, (J. C. Bradley), ° ° - ° ¥ > J I oM9. In the series before us a perceptible increase in robustness is found southward in the distribution at low elevations of the present species ; this is accompanied by an appreciable reduction in the pronotal crest and a moderate broadening of the vertex. Material from altitudes of 3,000 feet or over in the mountains of North Carolina and Georgia is quite similar to material from Massachusetts, but the pair before us from elevations of 3,000 and 3,500 feet on Black Rock Mountain, Georgia, are very large, more attenuate, with higher crest and more compressed vertex, the dorsal surface of which is excavate. Although material of the present species from the country adjacent to that in which C. australior is found shows certain characters more like those found in that species, no intergradation whatever exists, and C. australior shows definitely a more recent common ancestry with C. cubensis, as has already been observed. The southeastern limits of the present insect's distribution define sharply the north- western limits of the range of C. australior, which throughout its range appears to wholly supplant C. viridifasciata. Male immature examples in the earliest instars have the subgenital plate scoop-shaped, in the larger young this plate is much as in the adult condition. In the above series there are very small young from Lynchburg, Virginia; Greensboro and Charlotte, North Carolina, and Augusta, Georgia, which afford decided evidence that the insect 178 PROCEEDINGS OF THE ACADEMY OF [April, is particularly a spring species over the entire portion of its range treated in the present paper, as adults are usually found to be scarce as early as the middle of July. At about this time the young were found quite numerous in Virginia and North Carolina. We have never seen specimens of the present insect showing any indication of a reddish suffusion, which is so striking in occasional specimens, particularly those in the green phase, of C. australior. In the present series eighteen males and nine females are of the brown phase, seven males and twenty-two females are of the green phase, while one female is brown suffused with green. This species prefers upland surroundings where it thrives in the open in areas of short grasses; it is also found along the borders of woodlands (Weldon and Greensboro, North Carolina; Jasper, Georgia) and was found scarce in bunch-grass growing on granite slopes (Stone Mountain, Georgia). On the Atlantic coast the insect is known as far south as Sullivan Island, South Carolina, inland the most southern records are Florence, South Carolina; Augusta, Marshallville and West Point, Georgia, and Flomaton, Alabama.49 The species is found far south of this latitude in Texas, and we have specimens before us from as far east on the Gulf coast as Biloxi, Mississippi. Chortophaga australior Rehn and Hebard. Georgia. Savannah, (A. Oemler), 1 d% [U. S. N. M.]. Tybee Island, VII, 26, 1913, (J. C. Bradlev), 1 o\ 19; IX, 2, 1911, (H.), l"cf. Jesup, IX, 1, 1911, (R. & H.), 2 9 . St. Simon's Island, VIII, 30, 1911, (R. &H.), 3 cf, 9 9, 1 juv. &. Brunswick, VIII, 30, 1911, (H.), 1 cf , 19. Cumberland Island, IV, 29, 19, [Ga. State Cm.]; VIII, 31, 1911, (R. &H.), la1,!?. Hebardville, V, 15, 1915, (H.), 1 cf . Billy's Island, VI, VII, IX, 1912-13, (J. C. Bradley), 8^,6?. Homerville, VIII, 27, 1911, (R. & H.), 19. Albany, VIII, 1, 1913, (R. & H.), 1 tf, 19,1 juv. cf, 1 juv. 9. Tifton, IX, 8, 1910, (J. C. Bradley), 1 . Georgia, and Carrabelle, Warrington and Fort Barrancas, Florida, are properly referable to the present species. 180 PROCEEDINGS OF THE ACADEMY OF [April, the territory at present under consideration. The distribution of the present species is known to extend westward to the Great Plains .in the latitude of Nebraska; south of this the most western records are eastern Kentucky and Roan Mountain Station, Tennessee. Scud- der's Florida record is based upon a misidentification of C. australior. Saussure's records for Georgia and Florida likewise cannot be credited to this species, while Coquillett's Californian record applies to a western species. Pardalophora51 phoenicoptera (Burmeister). 1892. Hippiscus (H[ippiscus]) texanus Scudder, Psyche, VI, pp .267, 286. [Dallas and San Antonio, Texas.] Maryland. Queen Anne County, VIII, 15, 1902, (E. G. Vanatta), 1 9 , [A. N. S. P.]. Virginia. Fredericksburg, VII, 20, 1913, (R. & H.), 6^,29. Orange, VII, 21, 1913, (R. & H.), 1 tf1. Lynchburg, VII, 22, 1913, (R. & H.), 1 &. Petersburg, VII, 23, 1913, (R. & H.), 2 )> i juv ^ Fredericksburg, VII, 20, 1913, (R. & Vicinity of Stone Mountain, VIII, 3, H.), 12 d\ 4 juv. tf>, 3 juv. 9 . 1913, (R. & h.), 1 tf>. Orange, VII 21 1914 ,(R .. &H.), 1 cf. Augusta, VII, 29, 1913, (R. & H.), Lynchburg, VII, 22, 1913, (R. & H.), 19,1 juv 9 . 1 o*, 1 juv. 9. Macon, VII, 30-31, 1913, (R. & H.), 1 d*, 19, 3 juv. tf. Albany, VIII, 1, 1913, (R. & H.), North Carolina. Weldon, VII, 24, 1913, (R. & H.), l"^"'l 9 " vr^'4,9' tv a ion m 1 t^ Bainbridge,' VII, 15-27, 1909, (J. C. Wilmington, IX, 8, 1911, (R. , 19. 3 9. Thompson's Mills, X, 1909, (H. A. Allard), 1 9 , [U. S. N. M.]. No geographic variation is shown in the present material, but individuals of many series vary greatly in size, tegminal length, general coloration and intensity and recession of color pattern. The extremes of tegminal length are as follows: males 22.6 to 28 mm., females, 27.8 to 33 mm. The majority of specimens are of different shades of brown, mod- erately maculate and with caudal femora weakly thrice banded with a darker shade. A very few females are considerably paler, nearly immaculate, with the bands on the caudal femora greatly obscured, while a number of the males and two females are nearly black in general dark coloration, but have the color pattern nearly always decidedly intensified. None of these variations indicate any geo- graphic significance, as all of the larger series include specimens of the palest as well as darkest coloration. The present insect is widely distributed and abundant in upland situations, particularly in and about oak or mixed oak and pine woods of the Piedmont region. In the lower country it is found common in pine and oak woods as far south as Weldon, North Carolina; south of this in the lower country it is rarely met with and always in very few numbers (Golclsboro and Fayetteville, N. C, Florence, S. C, Thomasville, Ga.). The species has not been found southeast of Florence and Denmark, South Carolina; Macon and Thomasville, Georgia, and Tallahassee, Florida. Spharagemon collare wyomingianum (Thomas). Virginia. Bainbridge, IX, 3-7, 1910, (J. C. Petersburg, VII, 23, 1913, (R. & H.), Bradley), 19. 1 . 1911, Columbia, VII, 28, 1913, (R. & H.), g^Sf^gf 24^;Vm' 81' 19U' Su^, V%0 1914, (W. Stone), 1 tf, ^ J^ ^ 1912' i -a \ I'nadilla, I \ |( la. State Cln. ]. Sulhvan Island, IX, 5, 1911, (R. & H.), A]1)am. vm ^ 1913> (R & ^ j 9 \~hley Junction, VIII, 15, 1913, (R.), Bsf^Tif*> IX' 1910' (J" Q Bradley)> YemasIee'lX 4 1911 (R &H) Spring Creek, VI-VIII, 1911-13, (J. C. lemassee^ 1A, 4, 1JII, (K. & a..), Bradley), 28 o", 31 9, 1 juv. 9. . . Florida. '" "rgia- Jacksonville, VIII, 25, 1911, (R. & H.)„ Augusta, VII, 29, 1913, (R. & H.), 2 c?, 69; XI, 5, 1911, (W. T. 1 . Mixon's Hammock, V, 16, 1915, (H.), Atlantic Beach, VIII, 24, 1911, (R. & 1 cf. H.), ld,,19,l juv. 9. 64 Hist. Nat. Ins., Orth., p. 675, (1839). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 195 Daytona, XI. 11, 1911, 1 o1, 19, [U. S. X. M.]. Silver Spring, XI. 25, 1911, 1 . Georgia. Clayton, 2.000-3,700 feet, VI, (W. T. Davis), 1 9 . 1909, Thompson's Mills, spring, (H. A. Allard), 1 9, [U. S. X. M.J. Buckhead,VIII,2, 1913, (R.A II.), Id". Macon, VII, 30-31, 1913, (R. & H.), 1 d\ 3 juv. 9. • Albany, VIII, 1, 1913, (R. & II.;, 1 ?. Billy's Island, V, 16, 1915, (H.), 1 tf1 ; VI. 12, 1912, (J. C. Bradley), 3 5> 1913> (J- C- Bradley), 19. 8 9,2 juv. d", 3 juv. 9 Billy's Island, VI, 1912, (J. C. Brad- Brunswick, VIII, 30, 1911, (H.), 6 d\ ley)> 1 l 9- ii '! , -,i ,- Florida. ^^ iuv.'9 ' 1915' 1 JUV" Jacksonville, VIII, 25, 1911, (R. & H.), Suwannee Creek, VIII, 28, 1911, , ,}'' :• ' k5 9 V. Vnr oi ion x (R. & H.), 20 >, 18 9, 2 juv. d\ Ai^f% 5?ach, VIH' 24' 1911' (R" & Honiervme, VIII, 27, 1913, (R. & H.), Li™ 6ak' VlII>" 26> 1911> ventrtd, reaching a nt«e -^J^^fflS S£ J"Jt^'S^VSS witn ape. very slightly r;rr^nC" entra. ,0, than J-^"" — cercus shows this latter condition and ^ the apex is we • x, i -c i ;« hehnrdi the emargmation of the aistai niaigm aP«T^ta/ Plata -In all of the species small, greatly tapering so apically, this tuberculation somewhat more deciaea in ()St Mountain, Cobb County, VII, Weldon, VII, 24, 1913, (H.), 1 tf. 13, 1913, (J. C. Bradley), 19. Males of this insect are almost inseparable from males of M . devius, for the characters which Morse gives in his original descriptions do not hold. Females of the present species, however, differ greatly 220 PROCEEDINGS OF THE ACADEMY OF [April, from females of devius in being less robust, with narrower vertex of the fastigium and narrower ovipositor jaws, and in having the lateral lobes of the pronotum less deep and the post-ocular fuscous stripe there pronounced, narrow and sharply defined from the pale ventral portion of the lateral lobes. The males and young recorded above from Georgia could not be assigned to this species were it not quite certain that M. devius is found in Georgia only at the highest elevations in the Appalachians. Specimens before us from New York, New Jersey and Pennsylvania are rather small and the males have the subgenital plate and preceding- ventral abdominal segments wholly immaculate; this coloration is found in but a single southern male which is from Clayton, Georgia. The northernmost specimens here recorded were taken along the edge of a deciduous forest adjacent to a barren serpentine outcrop (Pink Hill) and among low bushes on sandy soil (Beltsville). In Georgia the species was found very locally in the undergrowth of forests composed chiefly of deciduous trees, particularly on hillsides. The species was previously known from Staten Island, New York, Stafford's Forge, New Jersey, and Sharptop Mountain, Georgia. Melanoplus devius Morse. Jefferson, North Carolina, VIII, 1907, Spartanburg, South Carolina, VIII, 6, (F. Sherman), 1 16.] NATURAL SCIENCES OF PHILADELPHIA. 231 seen from all of Georgia (Austell south to Thomasville) and from the Carolinas is clearly with Middle States and New England s. scudderi, although showing a parallelism to one of the feature's of s. texensis, but representative of the typical form in all the other characters. Individual size variation in this species is considerable, but there is also an average southward increase in the general bulk. The earliest date we are acquainted with on which adults have been taken in the southeastern States is August 24 (Chattanooga, Tenn.; Morse), while we have secured material as late as December 14 (Thomasville, Ga.; Hebard). The species was taken in sylvan surroundings, the undergrowth of pine and oak woods being its favorite situation. The Fasciatus Group of the Genus Melanoplus. A tentative study of the species which have been referred to this division shows that a recasting of the whole aggregation is necessary, but our collated information is not sufficiently extensive to say more than that fasciatus, querneus, franciscanus, nigrescens and walshii are certainly, and inconspicuus probably, members of this assemblage. We can state definitely that attenuatus, borealis, cockerelli, obovati- pennis, rotundipennis, morsei and tepidus are not to be included in the same category. Of these attenuatus is a member of the Decorus Group, obovatipennis, morsei and tepidus are members of the Tribulus Group and rotundipennis belongs to the Puer Group, while amplectens is a synonym of ivalshii and juvencus equals viridipes, a member of the Gracilis Group. Scudder's saltator belongs to another category, including ascensus and other species. The species of this group apparently form a transition to the constantly long-winged forms of the genus, the relationship being chiefly, however, with the short-winged forms. The sequence of species known to belong to this division appears' to us to be as given above. Melanoplus querneus new species. PI. XIV, figs. 1, 2, 3. 1905. Melanoplus nigrescens Rehn and Hebard (not of Scudder), Proc. Acad. Xat. Sci. Phila., 1904, p. 791. [Thomasville,' Georgia.] A member of the fasciatus group and more nearly related to .1/. walshii and nigrescens than to any of the other members of the genus. In general structure and coloration the new species is practically identical with the two older forms, but it differs from both in the slightly longer tegmina in both sexes, the broader sublamellate male 232 PROCEEDINGS OF THE ACADEMY OF [April, cerci, which are subconstricted mesad, and in the rounded and hardly produced apical margin of the subgenital plate of the same sex. The females of the three species are very similar, but the constantly longer tegmina and slightly less bicolored character of the same in querneus enable one to distinguish it. Type: cf ; Thomasville, Thomas County, Georgia. November 30, 1903. (Morgan Hebard.) [Hebard Collection, Type No. 116.] Description of Type. — Size large; form moderately robust. Head as in nigrescens except for the frontal costa failing to reach the clypeal suture ; antennae very long, slightly longer than the pronotum and tegmina together. Pronotum as in nigrescens. Tegmina almost or quite reaching the region of the furcula when the abdomen is in the usual somewhat recurved position, appreciably longer than in nigrescens, considerably exceeding the combined length of the head and pronotum, subacuminate, the apices narrowly rounded; sutural margins moderately arcuate. Prosternal spine similar to that of nigrescens; interspace between the mesosternal lobes slightly broader and less decidedly longitudinal than in nigrescens; interspace between the metasternal lobes subattingent, but not contiguous as in nigres- cens. Abdomen subcompressed proximad, with a fairly distinct and moderately elevated medio-longitudinal carina; furcula merely the briefest of points projecting from the disto-dorsal abdominal segment, poorly indicated on the surface of the segment as broad, rounded areas, between which the segment is emarginate ; supra-anal plate as in nigrescens, but the proximal medio-longitudinal sulcus and its marginal carinas are more decided and the median transverse carina is more strongly indicated (fig. 3); cerci broad, sublamellate, the greatest distal width hardly more than half the length, broad at base, somewhat narrowing to the middle, the whole dorsal margin arcuato-emarginate, the disto-dorsal angle rotundato-rectangulate, distal margin arcuato-truncate and gently rounding into an obliquely truncate disto-ventral section, which latter passes by a very slight angle into the ventral margin, distal section with surface faintly tumid and separated from distal margin by an arcuate impression (fig. 1); subgenital plate distinctly broader than long, the apical margin semi-elliptical in shape when seen from the dorsum, when seen from the side moderately emarginate with a faintly produced extremity (fig. 2) . Cephalic and median limbs slightly more elongate than in nigrescens. Caudal femora similar to those of nigrescens, but dorsal outline more concave distad; caudal tibiae with external spines ten to eleven in number. 191(i.l NATURAL SCIENCES OF PHILADELPHIA. 233 Allotype: 9 ; Same data as type but taken December 3, 1903. [Hebard Collection.] Description of Allotype. — Differing only from the same sex of nigrescens in the average larger size, actually as well as proportion- ately, longer antennae, longer tegmina and more robust and less attenuate ventral valves of the ovipositor. The tegmina are dis- tinctly longer than the head and pronotum together. The ventral jaws of the ovipositor are well decurved at the apex and have the proximal tooth strongly indicated, these being more slender, straighter and with a weaker tooth in nigrescens, while in walshii the valves, though nearly as straight as in nigrescens, are heavier and nearer in form to those of querneus. Measurements (in millimeters). Thomasville, Ga. Length of Length Length of Length of caudal of body. pronotum. tegmen. femur. ■ XI, 30, 1903. Type 22.5 6.2 10 15.8 28.3 6.2 22.2 15.8 9 24.2 5.3 20.8 14.5 9 26.8 6.1 22.7 16.5 In coloration the Georgia individuals are less contrastingly colored than Texan specimens, the pale colors being duller ochraceous and the tegmina more fuscous, while the external paginse of the caudal femora generally have the usual bars more or less fused into a blackish fuscous area covering the dorsal section of the pagina. The color of the caudal tibise ranges as dark as dark orient blue in the glaucous condition and as decidedly red as nopal red in the other type. The species was found in moderate numbers in a sandy area scatteringly covered with scrub oak. Melanoplus oonfusus Scudder. Melanoplus minor of authors. Fredericksburg, Virginia, VII, 20, 1913, (R. & H.), 5 a\ 2 9 . Havelock, Craven Countv, North Carolina, late V, 1907, and VI, 19-24, 1905. (F. Sherman), 4 d\ 2 9 , [N. C. State Dept. Agr.]. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 241 We find that Caloptenus minor of Scudder93 {Melanoplus minor of authors) is preoccupied by Caloptenus minor of Walker.94 Seudder's Melanoplus confusus,95 described from Munson's Hill and New-port, Kentucky, is, however, the same as his minor and the name1 must be used for the present species. Caudell, finding that Scudder's name minor was preoccupied, but misquoting the original generic position as Pezotettix, has recently proposed the name Melanoplus mutatus96 for the present species; this name naturally falls in the synonymy under Melanoplus confusus. The specimens from the latter locality listed above were kindly loaned to us by Mr. Sherman, in response to our request to see some of the material on which the record of this species from eastern North Carolina was based.97 These individuals are perfectly typical of confusus, and Havelock is the most southern locality in the east from which the species has been reported. At Fredericksburg the species was found in short grass on rather barren hillsides bordering the valley of the Rappahannock on the south. Melanoplus luridus luridus (Dodge). Black Mountain, North Carolina, VIII, 7, 1912. (W. Beutenmuller), 1 s MiIls> X) 1909) (H. A. All- w ?■' \ ' rv + ■ f (h i k- ty ard), 1 IX> 2> 1911> (H->> 5 „, ., ._> r ;} q Florida. Georgia_ Jacksonville, IX, 1913, (W. T. Davis), Buckhead, VIII, 2, 1913, (R. rth., p. 676, pi. XIV, figs, lla-b, (1839). [North America.] 108 Bull. (J. S. Geol. and Geogr. Surv. Terr., I. p. (is, (1874). [Florida.] 10jPkoc. Acad. Xat. Sci. Piiji.a., 1907, p. 298, (1907). 252 PROCEEDINGS OF THE ACADEMY OF [April, The insect is found everywhere in favorable situations on those portions of the coastal plain treated in the present paper. It is uncommon on the Piedmont plateau and in that region has been found only at Appomattox, Virginia, and at Buckhead, Stone Mountain and Warm Springs, Georgia. Aptenopedes sphenarioides sphenarioides Scudder. 1877. Aptenopedes rufovittata Scudder, Proc. Bost. Soc. Nat. Hist., XIX, p. 85. (In part.) [Fort Reed, Florida.] Georgia. Albany, VIII, 1, 1913, (R. & H.), Jesup, IX, 1, 1911, (R. & H.), 1 cf, R? juv 9 . tv v loin n r n A 19,1 juv. 9 ; XII, 1906, (H.), 3 tf, Bainbndge, IX-X, 1910, (J. C. Brad- 2 9,ljuv. tf. ley), 19. Brunswick, VII, 30, 1911, (H.),6c?,3 9 . Florida. St. Simon's Island, VII, 30, 1911, Jacksonville, VIII, 25, 1911, (R. & (R. & H.), 1 juv. 9. H.), 4 c?, 19; VIII, 1885, (W. H. Cumberland Island, VII, 31, 1911, Ashmead), 3 o\ 2 9, 1 juv. 9, (R. & H.), 5 Georgia, and Jacksonville, Florida. Amblycorypha rotundifolia rotundifolia (Scudder). Typical material. Spartanburg, South Carolina, and Tuckoluge Creek in Rabun County, Toccoa and Currahee Mountain, Georgia. In addition we now have 1 d" , Black Mountain, North Carolina, VII, 1912, (W. Beutenmuller), [Davis Cm.]. Intermediates between rotundifolia s.s. and rotundifolia parvipennis. Winter Park, North Carolina, and Macon and Warm Springs, Georgia. Microcentrum rhombifolium (Saussure). Delaware. Ashley Junction, VIII, 15, 1913, (R.), Delaware, 1 9 , [A. N. S. P.]. 1 &• Georgia . Austell, VIII, 27, 1910, 1 d\ [Ga. Chestertown, VIII, 2-23, 1899-1909, gtate Cln ] (KG. Vanatta), 6 c?, 5 9, [A. N. Isie of Hope, IX, 3, 1911, (R.'& H.), Maryland. own, . Vai S. P.]. 1 o\ 19. Virginia. Cumberland Island, VIII, 31, 1911, Near Washington, D. C., IX, 2-X, 1, (R. & H.), 1 d". 1883, 1 d\ 19, [Hebard Cln.]. Spring Creek, (J. C. Bradley), 19, South Carolina. [Ga" State Cln']- Florence, IX, 6, 1911, (R. & H.), 1 9 . At Florence this insect was taken in an open area covered with grasses, while at Ashley Junction and Isle of Hope it was beaten from heavy undergrowth in pine woods, and secured in the same fashion from bayberry, Myrica cerifera, on Cumberland Island. Microcentrum retinerve (Burmeister). Maryland. Virginia. Plummer's Island, VIII, 28 to X, Near Washington, DC X, 13, 1883, 13, 1904 to 1906, (Caudell; McAtee; 1 1 ? » [Hebard Cln.]. Fisher), 19 tf, [U. S. N. M.]. Q ■ Washington, District of Columbia, IX, , , y' 24 to XI, 3, 1906 and 1907, (A. N. Thompson s Mills, X, 1910, (H. A. Caudell), 3 cf , [U. S. N. M.]. Allard), 1 [U. S. N. M.]. 1 9 2 juv 9 Sanford, X, 24, 1889, (W. A. Gould), Jesup,' IX, 1, 1911, (R. & H.), 1 juv. , 1 9 , [U. S. X. M.]. Bainbridge, (J. C. Bradley), 19. The specimen from Hot Springs was taken in a hotel where it had been attracted by the lights at night, with it several examples of \ i oconocephalus triops (mexicanas of most authors) were taken. 18 262 PROCEEDINGS OF THE ACADEMY OF [April, NEOCONOCEPHALUS Karny. The authors have recently studied the species of this genus found in North America north of the Mexican boundary.118 The material from the region at present under consideration is there treated in full. We give below the localities for this material. Neoconocephalus exiliscanorus (Davis). Washington, District of Columbia, and Rosslyn and Clarendon, Virginia. The species has also been recorded in the region under consideration from Raleigh, North Carolina, and Thompsons Mills, Georgia. Neoconocephalus melanorhinus (Rehn and Hebard). Ocean City, Maryland. Neoconocephalus robustus crepitans (Scudder). Chesapeake Beach, Somerset Heights, Plummer's Island, Maryland; Washington, District of Columbia; Herndon, Clarendon, Oceanview and Virginia Beach, Virginia; Tarboro, Raleigh, Salisbury, Southern Pines and Wrightsville, North Carolina; Columbia and Denmark, South Carolina; Atlanta, Augusta, Tybee Island and Albany, Georgia, and Atlantic Beach and Hastings, Florida. Neoconocephalus caudellianus (Davis). Yemassee, South Carolina, and Billy's Island, Georgia. Neoconocephalus velox Rehn and Hebard. Billy's Island, Georgia. Neoconocephalus retusus (Scudder). Laurel and Plummer's Island, Maryland ; Washington and Anolostan Island, District of Columbia; Rosslyn, Falls Church and Roanoke, Virginia; Fayetteville, Wrightsville and Winter Park, North Caro- lina; Florence, South Carolina; Atlanta, Albany, Bainbridge and Fargo, Georgia, and South Jacksonville and Daytona, Florida. Neoconocephalus triops (Linnaeus). Conocephalus mexicanus and fusco-striatus of recent authors. Washington, District of Columbia; Hampton and Virginia Beach, Virginia; Fayetteville, North Carolina; Florence and Yemassee, South Carolina; Atlanta, Jesup, St. Simon's Island, Cumberland Island, Billy's Island, Thomasville and Bainbridge, Georgia, and Jacksonville, Hastings and Daytona, Florida. 118 Trans. Am. Ent. Soc, XL, pp. 365-413, (1915). ■» 1916.] NATURAL SCIENCES OF PHILADELPHIA. 263 Homorocoryphus malivolans (Scudder). Tappahannock, Virginia, VII, 13 to Wilmington, North Carolina, VIII, 1, VIII, 18, 1915, (II. Fox), 29c?, (G. P. Englehardt), 19,UD [U.S. 12 9, [Fox Cln.]. N. M.]. From the area covered by the present paper, the species has previously been recorded only from the single specimen from Wil- mington, North Carolina. It, however, probably occurs in the tidal marshes of the Atlantic coast, from southern Florida northward as far as the Virginia locality given above. This interesting species was found by Dr. Fox quite frequent in the dense growth of tall reeds, Spartina cynosuroides, in a tidal marsh. ORCHELIMUM Serville. The material of this genus in the collections before us has recently been fully treated by the present authors.120 The localities from the collections here being studied are as follows: Orchelimum agile (DeGeer). Chestertown, Cedar Point and Hyattsville, Maryland; Washington, D. C; Rosslyn, Addison, Appomattox and Virginia Beach, Virginia; Hamlet, Wilmington, Winter Park, Wrightsville and Lake Wacca- maw, North Carolina; Yemassee, South Carolina; Thompson's Mills, Stone Mountain, Savannah, Jesup, Tybee Island, Cumberland Island, Hebardville and Albany, Georgia, and Jacksonville, South Jackson- ville, Ortega, Atlantic Beach, Pablo Beach, Live Oak, Carrabelle, Marianna, Quincy, Hastings and Sanford, Florida. Orchelimum glaberrimum (Burmeister). Virginia Beach and Cape Henry, Virginia; Raleigh, Goldsboro, Fay- etteville, Smithville, Wilmington, Wrightsville and Lake Waccamaw, North Carolina; Florence, Ashley Junction and Yemassee, South Carolina; Macon, Savannah, Tybee Island, Groveland, Jesup, Billy's Island, Homerville and Albany, Georgia, and South Jacksonville, Atlantic Beach, Pablo Beach, Hastings and La Grange, Florida. Orchelimum vulgare Harris. Chestertown, Maryland; Washington, D.C.; Falls Church, Dryden, Norfolk and Wytheville, Virginia; Edenton, Raleigh, Blowing Rock, Blantyre and Linville, North Carolina, and Thompson's Mills, Georgia. 119 This specimen has been previously recorded, as the synonymous hoplomachus Rehn and Hebard, bv Sherman and Brimley. 120 Trans. Am. Ent. Soc, XLI, pp. 11-83, (1915). 264 PROCEEDINGS OF THE ACADEMY OF [April, Orchelimum laticauda Redtenbacher. Tolchester, Hyattsville, Plummer's Island and Montgomery County, Maryland; Washington and Anolostan Island, D. C; Rosslyn and Fredericksburg, Virginia; Weldon, Newbern and Lake Waccamaw, North Carolina; Florence, South Carolina; Thompson's Mills, Jesup and Billy's Island, Georgia, and Jacksonville, South Jacksonville, Ortega, Atlantic Beach and Sanford, Florida. Orchelimum minor Brunei-. Maryland opposite Plummer's Island; District of Columbia; Raleigh and Sulphur Springs, North Carolina, and Thompson's Mills, Hoschton and Thomasville, Georgia. Orchelimum concinnum Seudder. Chestertown, Maryland; Oceanview and Virginia Beach, Virginia; Wrightsville and Smith Island, North Carolina; Tybee Island, Georgia, and Warrington and Fort Barrancas, Florida. Orchelimum fidicinium Rehn and Hebard. Oceanview, Virginia; Wrightsville, North Carolina; coast of South Carolina; Savannah, Tybee Island and Cumberland Island, Georgia. Orchelimum militare Rehn and Hebard. Winter Park and Lake Waccamaw, North Carolina; Florence, South Carolina; Jesup, Waycross, Jordan's on Billy's Island, Homer- ville, Tifton and Bainbridge, Georgia, and Jacksonville, Atlantic Beach and Hastings, Florida. Orchelimum bradleyi Rehn and Hebard. Wilmington, North Carolina; Chase Prairie in Okeefenokee Swamp, Georgia, and Jacksonville and Tallahassee, Florida. Orchelimum superbum Rehn and Hebard. Tappahannock, Essex County, Virginia, VII, 27 to 28, 1915, (H. Fox, in tidal marsh on Scirpus americanus), 4 a(.h LX f, K)13, (W T 11 -. 20 9, 5 9 n.; XI, 3, 1911, Davis)) , ^ 19. U.I. Davis), 2 o\ 19. LiveO:ik,VlII,10, 1903, (A.P.Morse), South Jacksonville, IX, 7, 28, 1911, 5 d\ 6 9 ; VIII, 26, 1911, (R. & H.), (W. '!'. Davis), 5 d", 4 9. 12 o", 7 9, 1 juv. 9. The material from the region about Jacksonville averages the largest of any recorded above; there appears, however, to be little size variation correlated with northern and southern distribution in the present large series, and the specimens taken at Jacksonville in November are as small as any examples we have seen. These latter specimens, when compared with the largest from that locality, give the following extremes of measurement: length of body, c? 9.9-14.3,9 12-16.3; length of ovipositor, 11.2-15.4 mm. The stridulation of this curious species is a very faint and inter- mittent zip-zip-zee-zee-zee zip-zee-zee, etc. The males when stridu- lating often climb high up in the undergrowth; we have frequently found them three or four feet from the ground. Throughout the low country of the Carolinas, Georgia and Florida, this is one of the most ubiquitous species in the undergrowth of the pine woods and also on palmetto flats. At a number of localities the insects were found particularly numerous about oak shoots in such situations. In the high country of Georgia the species was found scarce in level woods (Dalton), everywhere abundant in luxuriant mountain vegetation of grasses, vines and oak sprouts under a forest predominantly black-jack oak (Currahee Mountain), in a patch of mint in a bunch-grass area under pines (on Stone Mountain) and among oak shoots in undergrowth of mixed forest (Toccoa, vicinity of Stone Mountain. Warm Springs). ATLANTIC-ITS Scudder. The species of this genus have recently been studied by the authors.123 A full treatment of the material from the region under consideration is there presented. We here give the localities of the material before us belonging to the eight species found in the area at present treated. Atlanticus testaceus (Scudder). A. pachymerus of most authors. Plummer's Island, Cabin John Run and Glen Echo, Maryland; Washington, D. C; Arlington, Virginia. 123 Trans. Am. Ent. Soc, XLII, pp. 33-100, (1916). 268 PROCEEDINGS OF THE ACADEMY OF [April, Atlanticus pachymerus (Burmeister). Greensboro, Raleigh, Goldsboro, Lake Ellis (Havelock) and Southern Pines, North Carolina. Atlanticus davisi Rehn and Hebard. Meadow Mountain at 3,000 feet elevation, Conowingo, Laurel, Beltsville and Glendale, Maryland; Rock Creek, D. C; Arlington, Fairfax County, Great Falls, Falls Church, Green Dell Farm two miles west of Pohick in Fairfax County, Orkney Springs, Stony Man Mountain, Orange, Hot Springs and Addison, Virginia. Atlanticus monticola Davis. Washington County, Virginia; Linville, Black Mountains, Valley of Black Mountains, Jones' Knob, Balsam Mountains and Lake Toxa- way, North Carolina; Pinnacle Peak and Clayton, Georgia. Atlanticus americanus (Saussure). A. dorsalis of most authors. Cabin John Run and Plummer's Island, Maryland; Washington, D. C; Arlington, Clarendon, Falls Church, Seven Mile Ford, Orange and Roanoke, Virginia; Greensboro, Sulphur Springs, Waynesville, Lake Toxaway, Topton, Andrews and Murphy, North Carolina; Clayton, Tuckoluge Creek, Rabun Bald, top of Pinnacle Peak, Tal- lulah Falls, Sand Mountain, Jasper and Lost Mountain, Georgia. Atlanticus gibbosus Scudder. Florence and Magnolia, South Carolina; Currahee Mountain, Warm Springs, Sandfly, Billy's Island and Spring Creek, Georgia; Crestview, Lake City, Jacksonville, Atlantic Beach, Pablo Beach and Hastings, Florida. Atlanticus dorsalis (Burmeister). Billy's Island and Thomasville, Georgia; Jacksonville, Florida. Atlanticus calcaratus Rehn and Hebard. Billy's Island, Georgia, and Hastings, Florida. Camptonotus carolinensis (Gerstaecker). Delaware beaten from wild grape vines on Dover, (Miss Lillian Hall), 19, f°und in short-leaf pine woods), [A. N. S. P.]. l JUV- ^ • n Georgia. Virginia. Thompson's Mills, X, 1909, (H. A. Near Washington, D. C, X, 13, 18S3, Allard), 1 a\ [Hebard Cln.]. 19, [Hebard Cln.]. Spring Creek, VI. 7-23, 1911, (J. C. Orange, VII, 21, 1913, (R. & H.; Bradley), 1 juv. 9 . beaten from low herbage), 4 juv.c? . Florida. North Carolina, gt. Augustine, (C. W. Johnson), 1 d\ Charlotte, VII, 27, 1913, (R. & H.; [A. N. S. P.]. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 269 Two consecutive instars arc represented in the four immature males from Orange, both earlier than that exemplified by the Charlotte specimen, which is in the instar preceding maturity. The records from Sprint;' Creek and St. Augustine are the most southern known for the species in the Atlantic coast States. Hadenoecus puteanus Scudder. 'North Carolina. Thompson's Mills, X, 1909, (II. A. Sunburst, laic May, 1912, (C. S. Allard), 2 cf, 69, 3 juv., [U. 9. Brimley), 2 iuv. 9, [Brimlev Cln.|. N. M. and Hebard Cln.]. Billy's Island, IX, 1-5, 1913, (J. Georgia. C. Bradley), 2 o", [Cornell Univ.]. Rabun County, VII, 1910, (W. T. Davis), 2 juv. cf, 2 juv. 9. The immature females show that the dentations of the internal valves of the ovipositor are not appreciably indicated until the adult condition is reached. We have had before us for comparison a cotype from North Carolina, received from Scudder by Bruner, in whose series it was. The above Georgia localities in a measure connect up the two previously known records of the species from the southern States, i.e., North Carolina and Monticello, Mississippi. Ceuthophilus uhleri Scudder. Maryland. Cabin John Run, IX, 1911, (W. T. Clayton, VIII, IS, 1 juv. 9 , [Ga. Davis; trapped in molasses jar), State Cln.]. 14 o" , 34 9 . Pinnacle Peak, VIII, 20, 1913, (J. C. Georgia. Bradley), 1 juv. , 73 9, 9 juv. ef , [Davis District of Columbia, VI, 1910, (W. T. Cln.]. Davis; trapped in molasses jar), Orange, Ya., VII, 21, 1913, (R. & H.), 22 & , 33 9, [Davis Cln.]. 3 juv. 3 9,1 juv., [Ga. State Cln.], 2 brachypterous. District oj Columbia. Billy's Island, Okeefenokee Swamp, Washington, IV, 20, 19, [Hebard VI, 1912, (J. C. Bradley), 19, Cln.], brachypterous. brachypterous. Georgia. Florida. Rabun County, VII, 1910, (W. T. Enterprise, IV, 17, (P. Laurent), 1 d\ Davis), 3 juv.132 [Hebard Cln.], brachypterous. Lavender, 1 cr, [Ga. State Cln.], Lake City, 1 9, [Hebard Cln.], bra- brachypterous. chypterous. After careful examination of material from many localities in America, extending from the United States southward to the southern borders of tropical South America, we find that there is no valid ground for separating Burmeister's borealis from hexadactyla of Perty, described in 1832 from Almas Geraes, Brazil.133 Few compari- sons are to be found between these supposedly distinct forms, Saus- sure and Scudder giving as differences the somewhat smaller size of hexadactyla and the more rounded projection at the base of the second lateral dactyl of the cephalic tibise. The series before us show that the insect attains its greatest size development in the United States, but that little constancy exists is also demonstrated, as specimens from the same locality in several cases show almost the maximum difference in size found in the entire series before us, which numbers considerably over one hundred specimens. The rounded chitinous projection at the base of the second lateral dactyl of the cephalic tibise is normally rounded, but is often worn down to a more or less angulate condition and is naturally valueless as a character in this respect. No other differences exist between North and South American examples, and borealis as a result falls into the above 132 Two of these individuals are in the very early stages and the smallest of these has three, instead of four, tibial dactyls. In three other specimens in the same instar before us, this remarkable feature is also found. 133 Delect. Ann,,. Art. Brasil., p. 119, pi. 23, fig. 9, (1830-34). 19 278 PROCEEDINGS OF THE ACADEMY OF [April, synonymy. Previously the following names have been found to be synonyms of borealis: americana Harris, 1835; brevipennis Ser- ville, 1839; longipennis Scudder, 1862, and Columbia Scudder, 1869. In the present species some variation is shown in the shape of the ocelli and in the tegminal venation. Material from Florida and southern Georgia averages somewhat smaller than material from more northern points; the smallest adult specimen of the species we have ever seen is that from Billy's Island, Georgia, the measurements of which are : length of body 20.4, of pro- notum 7.2, of tegmen 6.4, of caudal femur 6, and greatest width of pronotum 5.7 mm. Females of the species have been taken much more frequently than males and the brachypterous condition is more frequently found in both sexes in the region at present under consideration. Scapteriscus vicinus Scudder. PI. XIV, figs. 4, 5, 0, 7. 1869. Scapteriscus agassizii Scudder, Mem. Peabody Acad. Sci., I, p. 13. [Switzerland (introduced from Central America?).] Georgia. Brunswick, II, 5, 1903, (S. W. Good- Waycross, X, 20, 1914, (W. Tatum, year), 3 cf, 1 9,1 juv [IT. S. N. M. Jr.), 1 juv., [U. S. N. M.l. and Hebard Cln ]; IV 18 1912, Hebardville, V, 15, 1915, (H.; in sandy [W. V. Reed), 1 *&>a1?£*i& S" Barn" 1 juv., [Hebard Cln.]. well)> 1 1U- &- N- M-l St. Simon's, St. Simon's Island, III, 18, 1912, (W. V. Reed), 6 9 , [U.S. N. M.J. After careful consideration of very large series, representing every species of the present genus, we are satisfied that the species found abundantly in the southeastern United States, the West Indies and portions of South America, and which has beeli frequently recorded as S. didactylus, represents instead vicinus of Scudder. This species is very closely related to didactylus of Latreille (described from Surinam and found elsewhere in South America and northward to Costa Rica), but is somewhat heavier, with the width of the pronotum distinctly greater in proportion to its length and with the basal width between the tibial dactyls averaging somewhat less. The species is, however, not nearly as distinct as Scudder believed, for the characters of the but little dissimilar ocelli, slightly different terminal tarsal joints of the caudal tibiae and other differences which he gives in the original description are practically valueless. The species, agassizii, described by that author on the following 1!»16.] NATURAL SCIENCES OF PHILADELPHIA. 279 page of the same work, is a synonym of vicinus, based on minor differences in these characters, which in each of the many series before us show some such slight differentiation. This species is a serious pest in portions of the State of Georgia; at Darien, in 1906, the insects destroyed a great portion of the grass on the golf course.134 Scapteriscus acletus135 new species. PI. XIV, figs. 8, 9, 10, 11. Closely related to S. mexicanus,136 differing137 in the shorter dactyls and spines of the limbs, normally fewer spines of the dorso-internal margins of the caudal tibiae,138 shorter limbs and much less com- pressed terminal tarsal joints of the caudal tibiae (in this species no wider than the caudal metatarsus, in mexicanus distinctly wider with dorsal portion decidedly compressed). The present species and mexicanus agree, however, in the wide separation of the tibial dactyls, the elongate pronotum and decidedly elongate lateral ocelli, which characters readily distinguish them from S. vicinus, from which species the present insect also differs greatly in color pattern of the pronotum, general coloration in life and narrower terminal tarsal joint of caudal tibiae. Considering S. abbreviatus, the remaining species of the genus found within the boundaries of the United States, we find it to be readily distinguishable from vicinus, acletus and mexicanus by the distinctive coloration (which gives the insect a strongly mottled appearance), small round lateral ocelli arid extremely reduced teg- mina and wings. The elongate and widely separated tibial dactyls, and spatula with distal portion of ventral margin briefly chitinous and with disto-ventral angle nearly rectangulate and sharply rounded in abbreviatus, serve further to indicate that in linear arrangement vicinus comes first, followed by didactylus, acletus, mexicanus and abbreviatus. 134 Noted by Hebard, Ent. News, XX, p. 179, (1909). us prom a = not, and Kfa/rbc = welcome; in allusion to the destructive habits of this insect. 136 Described by Burmeister, Handb. Entom., II, Abth. II, pt. 1, p. 740, (1838). [Alvafado, Mexico.] 137 These comparisons are made with an apparently typical female of mexicanus (pi. XIV, figs. 12, 13, 14 and 15) from Durango, Mexico, in the Hebard Collection, (lie measurements (in millimeters) of which are: length of body, 36, of pronotum 11.4, of tegmen 19.2, of wing 26.6, of longest tibial dactyl 5.1, of Caudal femur 12.5, of terminal tarsal joint of caudal tibia 3.4; width of pronotum 8.3, of terminal tarsal joint of caudal tibia 1.6. Two other similar females are before us bearing only the data "Mexico." 133 In mexicanus these spines are described as 5-5 in number, and this is true for the specimens of that species before us. 280 PROCEEDINGS OF THE ACADEMY OF [April, Type: c? ; Hebardville, Ware County, Georgia. May 15, 1915. (M. Hebarcl; in garden.) [Hebard Collection, Type No. 406.] Description of Type. — Size medium, form rather slender. Head with lateral ocelli over twice as long as broad, in direction convergent meso-distad, separated at nearest point by a space twice the length of one ocellus. Eyes somewhat more elongate than in vicinus. Tegmina similar to vicinus, but with veins not as heavy and cross- veinlets fewer. Wings reaching slightly beyond apex of abdomen. Limb proportions much as in vicinus. Dactyls of cephalic tibiae separated by a space equal to basal width of one of these dactyls. Spatula with distal half of ventral margin chitinous, straight, the disto-ventral angle nearly rectangulate and sharply rounded. Median tibiae armed interno-distad with four heavy spurs. Caudal tibiae with ventro-internal margins each bearing four long spines, the last situated very slightly proximad of the three long distal spurs, disto-external margin armed with three short spurs, the dorsal widely separated from the other two. Distal joint of caudal tarsus slender, no wider than metatarsus, with dorsal margin not noticeably compressed. Coloration distinctive. Allotype: 9 ; Same data as type. [Hebard Collection.] Description of Allotype. — Similar to type in characters common to both sexes. Tegmina similar to vicinus, but, as in male, with veins not as heavy and cross-veinlets fewer. Wings reaching slightly beyond apex of abdomen. In addition to the type and allotype, we have before us a series bearing the same data and material taken at the same locality from May 15 to 31, 1915, by William Walker; these specimens, 26 c? , 25 9 , may be considered paratypes. This paratypic series shows that the species exhibits considerable size variation, the average of the majority of specimens, however, approximates the types in this respect. Both intensive and recessive color patterns are developed, and the tegminal veins and veinlets are sometimes heavier than in the typical condition. Decided uniformity is found in the shape of the lateral ocelli, length and separation of the tibial dactyls and form of distal joint of caudal tarsus. In eighty uninjured specimens the number of spines of the dorso-internal margins of the caudal tibiae are as follows: Number of spines 3-4 4-4 4-5 5-5 Number of specimens 1 66 8 5 In one specimen having 5-5 spines, one of these spines is bifurcate. 1910.] NATURAL SCIENCES OF PHILADELPHIA. 281 Slight differences in ocellar form, occasional appearance of an accessory spine on one or both of the dorso-internal margins of the caudal tibia? and slight differences in the separation of the tibial dactyls and in the width of the distal joint of the caudal tarsus, cannot be used as features to separate species of this genus, as dis- cussed above in the treatment of vicinus. Measurements (in millimeters). c£_ 9_ type. Paratypes. Allotype. Paratypes. Length of body 28.7 26.4-34.4 29.7 26.5-35.5 Length of pronotum 9.3 8.8-11.3 9.3 8.5-10.3 Width of pronotum189 7.3 6.4-8.9 7.1 6.6-8.3 Length of tegmen 14.7 14. 6-17. 8 15.2 15-19.2 Length of win- 19.6 19.6-24.3 21.7 20.5-26.1 Longest tibial dactyl 3.6 3.3-4 3.1140 3.1-4.1 Length of caudal femur . 10.3 10-11.7 10.6 10.2-12 Length of terminal tarsal joint of caudal tibia 2.6 2.3-2.7 2.7 2.6-2.8 Width of same 8 .7-1 .8 .8-. 9 Coloration. — Normal condition (type, allotype). General colora- tion pinkish buff. Head with occiput including raised portion of inter-ocular space blackish brown, a brief space of the same color back of the eyes, but separated from them by a narrow interval of the pale general coloration. Pronotum with dorsum marked with an oval of blackish brown, this interrupted cephalad and mesad by rounded incursions from each side of the general pinkish buff colora- tion, these cephalic indentations weakly connected, the margins of the dark area concave in their caudal fifth. Tegmina and wings buffy with veins darker. Caudal femora of general coloration, but with all except the proximal fourth of dorso-external portion suffused with a darker shade. Abdomen dark above, pale below (in life shining grayish below, contrasting strongly with vicinus, which in life has this portion of the body shining cinnamon buff). An intensive coloration is found in numerous specimens in which the darker markings are all deeper and more extensive, the whole dorsal surface of the pronotum being blackish brown, with the exception of four small pale spots in apposition to the rounded incursions of paler coloration as found in the normal condition. 139 Owing to the impossibility of determining the lateral margins of the dorsum of the pronotum in the present genus, this measurement indicates the absolute width of the pronotum. 140 The minimum measurements for these dactyls represent specimens in which these claws are worn down and blunted by much use. This is true of the present specimen. 282 PROCEEDINGS OF THE ACADEMY OF [April, All gradations are found, however, to a recessive condition in which the dark markings are much reduced, the incursions of pale coloration being considerable, leaving only narrow projections of the dark color laterad between them. The large series of immature examples taken with the typical series are, with few exceptions, in the instars immediately preceding maturity. In these the coloration averages slightly more recessive than in the adults. Biological Notes. — At the type locality the species was found in great numbers in sandy soil. Tunnels recently made were everywhere apparent. Digging into these and the flooding of such areas revealed few examples, but a row of lettuce in a dying condition was inves- tigated, and beneath the wilted leaves, resting on the ground at the base of these plants, many specimens were found. The roots of the lettuce and other garden plants, such as tomatoes and beets, were found to have been extensively damaged by the present insect, in many cases all but the main tap root having been completely devoured. When disturbed individuals always sought, if possible, to escape under the ground, disappearing in the sandy soil with astonishing rapidity; on the surface they could run very nimbly, occasionally giving a short hop, but not attempting to fly. There is no doubt, however, that both this species and vicinus can fly vigorously, and during migrations, which undoubtedly occur, probably resort almost wholly to this method of locomotion. At night the rich gutteral "grrrrr" of the insect could be heard on all sides, but no individuals were found on the exposed surface of the ground. Specimens Examined: 83; 28 males, 30 females and 25 immature individuals. Jesup, Georgia, V, 15, 1915, (H.; in burrow under board in grassy field), 19; X, 1, 1910, 1 9 , [Ga. State Cln.j. Hebardville, Ga., V, 15, 1915, (H.; in sandy soil of garden), 19 cf , 18 9, type, allotype, paratypes, 13 juv.; V, 15 to 31, 1915, (Wm. Walker), 7 & , 99, paratypes, 12 juv., [all Hebard Cln.]. White Oak, Ga., Ill, 23 and IV, 1904, (A. S. Barnwell), 2^,19, [U. S. N. M. and Hebard Cln.]. Scapteriscus abbreviates Scudder. PI. XIV, figs. 16, 17, 18, 19. White Oak, Georgia, IV, 1904, (A. S. Lemon City, Florida, (E. J. Brown), Barnwell), 1 tf, 1 9, [U. S. N. M. 2 juv., [U. S. N. M.]. and Hebard Cln.]. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 283 The specimens from Georgia, in addition to three from the same locality previously recorded by us,141 constitute the only record of this species from the United States outside of extreme southern Florida. Tridactylus apicalis Say. 1862. T[ridactylus] terminally Scudder, Bost. Jour. Nat. Hist., VII, p. 425. [Cambridge, Massachusetts; Maryland; southern Illinois.] District of Columbia. Georgia. Washington. IX. 1NN3, 1 o\ [Hebard Bainbridgc, IX, 17 to X, 19, 1910, Cln.l. (J. C. Bradley), 1 cr. Rock Creek, 1 9, [U. S. N. M.]. Spring Creek, Decatur County, V. 7 T/. . ■ to 23, 1911, 19,3 juv.; VII, 16 to ygima. 29, 1912, 74 VIIj 26> 1913> (R. & H)> FrHfffuT*& 2^ 1913' (R' & ChJtottef VII, 27, 1913, (R. & H.», Immature individuals of this species are very striking, being pale reddish brown in general coloration speckled with much darker brown, by which dark color the lateral lobes of the pronotum and first and fifth abdominal segments are heavily suffused. These latter markings give a distinctive barred appearance in very young- individuals, which becomes less strongly defined in successive instars to those preceding maturity, in which these markings are not strongly indicated. The species was found abundant in damp leaves in and along the border of a deciduous woodland on high ground near a stream (Fredericksburg) and scarce in leaves on edge of a deciduous forest (Orange). No other records, other than those given above, have been pub- lished for the species in the territory at present under consideration. Nemobius cubensis cubensis Sauasure. Montgomery County, Maryland; Washington, District of Colum- bia; Raleigh, North Carolina; Florence, South Carolina; Jesup, Georgia, and Jacksonville, Florida. Albany, Georgia, VIII, 1, 1913, (R. & Bainbridge, Ga., VII, 15-27, 1909, H.J, 2 a\ 2 9 • All brachypterous. (J. C. Bradley), 1 c? . Macropterous. 290 PROCEEDINGS OF THE ACADEMY OF [April, The species was found occasional in swampy spots (Albany). The above records include all the localities known for the species over the territory at present considered. The species has been found as far north as Staten Island, New York, and southward appears to reach its greatest abundance in the United States in peninsular Florida. Nemobius palustris palustris Blatchley. Washington, District of Columbia, and Fayetteville, Lake Wacca- maw and Wilmington, North Carolina. These, the southernmost-known records for this insect, include all the localities known for it over the area now being studied. Nemobius carolinus carolinus Scudder. Cabin John Run and Plummer's Island, Maryland; Washington, District of Columbia; Alexandria County, Dead Run, Rosslyn, Fairfax County and Falls Church, Virginia; Raleigh, Blowing Rock, Newton, Black Mountain, Balsam, Highlands, Fayetteville and Lake Waccamaw, North Carolina; Florence, Swansea and north end of Sullivan Island, South Carolina; Thompson's Mills, Brunswick, Thomasville and Bainbridge, Georgia, and Daytona, Florida. Virginia. Charlotte, VII, 27, 1913, (R. & H.), Fredericksburg, VII, 20, 1913, (R. & n \j UJ- ^\jUUo"K9 -iniQ ,„ , „, H , .> • _ % Goldsboro, VII, 25, 1913, (R. & H.), n.;,-]uv. a. 2 d% 3 9. »t is, 7- Georgia. North Carolina. -p.. i r> i wttt ,m .m, /T n Pinnacle Peak, VIII, 20, 1913, (J. C. Jefferson, IX, 1912, (F. Sherman), Bradley), 2 9. 1 d\ [N. C. State Dept. Agr. Cln.]. Jasper, VIII, 5, 1913, (R.), 1 juv. h- 1912, (H. Fox), 2 rid;i, South Carolina, Virginia and Alabama state records by Caudell (Bull. 44, Bur. of Entom., U. S. Dept. of Wr n 88 (1904)). 1- ' 1535(/«. Cat. Ortk., II, p. 24, (1906). "< Miss. Sri. Max., Rech. Zool.. VI, p. 412, pi. VIII, fig. 31, (1874). [Bahia Blanca, Argentina.] 292 PROCEEDINGS OF THE ACADEMY OF [April, separated from muticus as found in the Guianas,155 by the head being- marked with four pale longitudinal lines and the caudal metatarsus being shorter and broader with dorsal margin more distinctly arcuate. The head marking appears often, though usually not strongly defined, being particularly apparent in immature examples or adults of pale general coloration, over nearly the entire distribution of the species.156 Various series show that the metatarsal length and heaviness is extremely variable in the species, though often uniform in large series from the same general region.157 Variations in tegminal and wing length, and in the caudal metatarsus, are principally the cause of the above synonymy, though other variations, decidedly puzzling without large series being available for comparison, also occur. Within the boundaries of the United States the species shows appreciable differences from material from the Guianas; these differences due, in our opinion, to an adaptation to the differences in environment and climate, but, considering the plasticity of the species, neither sufficiently constant or well marked to warrant the recognition of a geographic race. The most noteworthy of these are : the somewhat more evenly rounded and protuberant occiput; slightly weaker inter-antennal protuberance; slightly less prominent eyes: more nearly quadrate dorsum of the pronotum, with caudal margin straight or weakly convex (never weakly bisinuate as in typical muticus); color frequently decidedly paler, with the pale marking at the ventro-cephalic angle of the lateral lobes of the pronotum (usually conspicuous in typical muticus) subobsolete. Along the Atlantic coast of the United States the species is usually found to have the metatarsus very slightly longer than is typical, but of similar proportions; specimens from Alabama westward, however, have the metatarsus distinctly shorter and slightly heavier. The examples from Victoria, Texas, have the occiput more dis- tinctly striped than in any but Argentinian material before us. Great variation in intensity of coloration is shown in the series here recorded; although these specimens average decidedly paler than tropical material of the species, the four adults from Hebardville, 155 A large series now before us from British Guiana appears to be in every way typical. 156 This marking being less apparent in adults of intensive coloration, it is not surprising to find few of these in tropical series which are usually dark in general coloration. 157 We are able to ascertain this fact from very large series now before us from the West Indies, Central and South America. 1916.] NATURAL SCIENCES OF PHILADELPHI \ . 293 Georgia, are as dark as any specimens before us, but have the lateral lobes of the pronotum entirely pale. In the United States the males have the tegmina reaching to, or falling slightly short of, the apex of the abdomen; the females have the tegmina never less than half the abdominal length, frequently about two-thirds that length, though more variable than the males in this feature. Of the above series two females (Washington) are macropterous, one female (Victoria) has a single caudate but imper- fect wing, while one female (Falls Church) has long tegmina but aborted wings. It might seem that geographic races could be recognized, but careful study, of this and much larger tropical American series, shows that variation such as discussed above occurs in an endless complexity, and that intermediates of every sort occur between conditions which might easily be supposed, without sufficient material for comparison, to represent geographic races or even closely related species. The form of the male titillatores is the same in all of the material of the species examined. In the United States adults of the species appear in April, May and June, later than this individuals are scarcely ever encountered. The present insect has long been known to be very destructive in the southeastern United States, damaging cotton, tobacco, sweet and white potatoes, strawberries, peas and other farm products. The series here recorded was taken: in fence corner and in truck patch (Ocean View), in cotton field (Beech Island and Auburn), on fences and walls of yard of bermuda grass, stridulating at dusk (Hebardville) and injuring strawberries (Lawtey). The records given above define the known range of the species in the United States. Gryllus assimilis Fabricius. Recent studies have shown this to be the only native representative of the genus found in America.158 Great variation, however, exists and we have found the variants to be best represented by symbols.109 Of these, the following four are found in the regions at present under consideration : B, suffused Z, (normally d or e, w), (45 to 2, the latter weakly 0); scudderianus. AU, (normally ax), 4; neglectus. 158 Rehn and Hebard, Paoc. Acad. Nat. Sci. Phila., 1915, pp. 293-322, (1915). 150 S.-p Proc. Acad. Xat. Sci. Phila., 1915, pp. 299, 300, (1915). 20 294 PROCEEDINGS OF THE ACADEMY OF [April, AV, (normally a or b but ranging to f , x but often u) , 3 ; pennsyl- vanicus. AW, (normally d but ranging from a to f , w but often u) , 3 ; luc- tuosus. Of these, scudderianus is apparently an adaptation to an arenaceous surrounding, it is found locally as far north as Indiana, at the more northern points showing an average less robust form and smaller size (such material constituting the bases of the names scudderianus, rubens and arenaceus), while in southern Florida and on the Gulf coast an average more robust form and larger size is developed (upon such material firmus was in part founded). The other three variants intermingle more generally, though individuals of each occasionally show the transition toward the scudderianus variant. The darkest of these, neglectus, is found in the north, only appearing well defined, in the area here considered, in the Appalachian mountains south as far as their highest points in north Georgia. Over the entire region pennsylvanicus appears generally, but is the most frequent condition met with on the Pied- mont plateau, while luctuosus is the normal condition everywhere on the coastal plain in the regions here considered.160 Material can be grouped for convenience under these variant designations, but in such treatment it must be remembered that nearly every specimen of each series will show different degrees of coloration, femoral and ovipositor length and every other feature, excepting those diagnostic qualities common to all of the variants of G. assimilis. In the paper in which these facts are fully treated, the exact con- dition of the material from the collections at present being studied is given,161 the localities being: Chestertown, Glen Echo and Jennings, Maryland; Washington, District of Columbia; Roslyn, Virginia; Winter Park and Lake Waccamaw, North Carolina; Flor- ence, Sullivan Island and Yemassee, South Carolina; Rabun Bald, Black Rock Mountain, Tuckoluge Creek, Clayton, Atlanta, vicinity of Stone Mountain, Augusta, Jesup, Waycross, Hebardville, Billy's Island, St. Simon's Island, Cumberland Island, Fargo, Chester, Bain- bridge and Spring Creek, Georgia, and Atlantic Beach, Pablo Beach, Burnett's Lake and Live Oak, Florida. 160 It is this condition which the present authors had frequently recorded as G. rubens from the southeastern United States. 161 Proc. Acad. Nat. Sci. Phila., 1915, pp. 305-307, (1915). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 295 Gryllus domesticus Linnaeus. This species, accidentally introduced by man from Europe, has been recently recorded by us162 from "Carolina" and Roswell, Albany and Thomasville, Georgia, within the territory at present under con- sideration. Miogryllus verticalis (Serville). The American species of this genus have recently been fully studied and reported upon by the junior author.163 Material from the present collections from College Park and Plummer's Island, Maryland; Washington, District of Columbia; Falls Church, Virginia; Raleigh and Goldsboro, North Carolina; Columbia, South Carolina; Clayton, Sand Mountain, Trenton, Au- gusta, Tybee Island, Mixon's Hammock in Okeefenokee Swamp and Billy's Island, Georgia, and Jacksonville, Atlantic Beach and Mari- anna, Florida, is treated in that paper. In addition we now have the following specimens: Raleigh, North Carolina, late VI, 1911, Hebardville, Georgia, V, 15, 1915, (H.), (C. S. Brimlev), 2 9,1 macropter- 1 juv. 9 , 1 very small juv. 9 . ous,16" [Brimlev Cln.]. Billv's Island, Ga., V, 16, 1915, (H.), ' 1 juv. 9. Gryllodes sigillatus (Walker). Though not as yet known from Florida as far north as the region treated in the present paper, this species is apparently rapidly extending its distribution northward. It has been reported by Davis from as far north in Florida as Lakeland, and recently the junior author found it widely distributed in that town, particularly about grocery stores, where, on May 21, 1915, a single male was taken to verify tljis observation. (Ecanthus niveus (DeGeer). Cranberry, North Carolina, VIII, 1896, (H. Skinner), 1 o", [A. N. S. P.]. This species has been very widely discussed in past literature, principally owing to its economic importance, but very general confusion with both 0. exclamationis and 0. angustipennis prevents the use of the majority of these records in distributional studies. 162 Paoc. Acad. Nat. Sci. Phila., 1915, pp. 320-322, (1915). 163 Jour. X. Y. Ent. Soc, XXIII, pp. 101-121, (1915). 164 This specimen is of particular interest in being the first macropterous example of the species to be reported from temperate regions. Four other macropterous specimens are known from the tropics, the type and three individ- uals of the series of one hundred and twenty-two examples which were before the junior author at the time the genus was revised. In the present example the internal face of the cephalic tibiae bears a but weakly defined tympanum; the measurements are: length of body 13.7, of pronotum 2.3, of tegmen 6, of wing 16.7, of caudal femur 9, of ovipositor 10.3 mm. 296 PROCEEDINGS OF THE ACADEMY OF [April, We know it to be found on the Atlantic coast as far north as Wind- sor, Connecticut. Thompson's Mills, Georgia, is the only previous definite record for the southeastern United States. The species is both dendrophilous and thamnophilous, appearing usually in greatest numbers in shrubs with pithy branches, in which the females deposit their eggs. (Ecanthus angustipennis Fitch. North Carolina. Raleigh, X, 18, 1905, 1 9 ; XI, 2, 1904, (G. M. Bentley), 1 9, [both N. C. Dept. Agr. Cln.]. Southern Pines, XI, 1908, (A. H. Manee), 2 9, [N. C. Dept. Agr. and Hebard Cln.]. Mount Airy, XI, 16, 1904, (G. M. Bentley), 19, [N. C. Dept. Agr. Cln.]. Saluda, VIII, 17, 1903, (A. P. Morse), 1 juv. 9 . Balsam, about 4,000 feet, IX, 15-18, 1908, (Z. P. Metcalf), 19, [N. C. State Dept. Agr. Cln.]. South Carolina. Florence, IX, 6, 1911, (R. & H.; in forest foliage), 1 9 . Georgia. Pinnacle Peak, Rabun County, VIII, 20, 1913, (J. C. Bradley), 1 9 . Currahee Mountain, VIII, 5, 1913, (H.; beaten from luxuriant vegeta- tion, vines, oak shoots, etc., in black- jack woods), 1 juv. d71. Buckhead, VIII, 2, 1913, (R. & H.), 1 juv. cf. Isle of Hope, IX, 3, 1911, (R. & H.; heavy undergrowth of gray-bark pine forest), 1 9 . Albany, VIII, 1, 1913, (R. & H.), 1 juv. 9 . De Witt, VII, 25, 1912, 1 9 , [Ga. State Cln.]. Spring Creek, VII, 16-29, 1912, (J. C. Bradley), 1 9 . Hartford, Connecticut, is the most northern location on the Atlantic coast at which we know the species to occur. Past confusion with other species makes distributional studies from the literature, in almost every case, impossible. The species has been taken and recorded by us from as far south as Lakeland, Florida. It has been correctly recorded in the regions under consideration from Bayville, Virginia; Raleigh and Asheville, North Carolina, and Toccoa and Thompson's Mills, Georgia. Like O. niveus, the species is both den- drophilous and thamnophilous. (Ecanthus quadripunctatns Beutenmiiller. Virginia. Fredericksburg, VII, 20, 1913, (R. & H.; occasional, especially juv., in weeds in open), 1 d% 19. Cape Henry, VII, 2 and IX, 7, 1903, (A. P. Morse), 2 9 . Virginia Beach, VII, 4, 1903, (A. P. Morse), 3 d". Appomattox, IX, 6, 1903, (A. P. Morse), 19,3 juv. 9. Wvtheville, IX, 5, 1903, (A. P. Morse), 39. North Carolina. Weldon, VII, 24, 1913, (R. & H.), 1 tf1. Tarboro, VII, 7, 1903, (A. P. Morse), 3 tf,29. Raleigh, VII, 9, 1903, (A. P. Morse), 1 i _ti ttt t: at mi 1905, (hherman and Brimlev), o d\ 1 6 , LU. b. W. M.J. 8 9 , [N. C. State Dept. Agr.]. Plummer s Island, VIII, 16 to IX, 15, Fayetteville, IX, 9, 1911, (R. & H.), 3 9 . 1907 to 1909, (Caudell, Fisher, Wilmington, IX, 8, 1911, (H.), 1 9 . Knab), 2 d\ 1 9, [U. S. N. M.j. Lake Waccamaw, IX, 8, 1911, (H.). lc?. Cabin John Run, VIII, 7, 1902, (T. „ , Carolina Pergande), 1 9 , [U. S. N. M.]. n *outn Laroima- Florence, IX, 6, 1911, (R. & H.), 2 a\ District of Columbia. 7 9 . Washington, VIII to X, 1878 to 1883, Georgia. 2 J, 10 9, [Hebard Cln. and U. S. Toccoa, VIII, 28, 1909, (J. C. Brad- N. M.]. ley)> 1 o". Virmnin Lavender, 1 d\ 1 9,-[Ga. State Cln.]. 1 ir9l,na- Thompson's Mills, X, 1909, (H. A. Glencarlyn, VIII, 12, (A. N. Caudell), Allard), 19, [U. S. N. M.]. 1 o", [U. S. N. M.]. Savannah, VIII, 14, 1903, (A. P. Falls Church, IX, 4, 1906, (A. N. Morse), 1 d\ 3 9 • Caudell), 1 &, 2 9 , [U. S. N. M.]. Albany, VII, 31, 1913, (H.), 1 9 . Fredericksburg, VII, 20, 1913, (R. & Florida. H.), juv. seen. Jacksonville, (T. J. Priddey), 1 c% Petersburg, VII, 22, 1913, (H.), 1 d\ 19, [Hebard Cln.]. The larger size, heavy facial markings and narrow but decided dark, longitudinal stripe of the caudal femora readily distinguish this species from any other found in the United States. Of the present series five females are long winged (Rockville, Washington, Raleigh, Albany and Jacksonville). These and two females with long tegmina and no wings (Virginia hear Washington and Thompson's Mills) have the cephalic tibiae with open auditory foramina on both faces, all of the others have this only on the external 1016.] NATURAL SCIENCES OF PHILADELPHIA. 303 face, though a few show a slight depression on the internal face. Con- siderable size variation is shown, this having no geographic significance. The species is usually found in luxuriant grasses or weedy tangles, particularly near water, and is often locally very abundant. It was found immature in great numbers in weeds, both along the river and streams in woods (Fredericksburg), very scarce in short grasses in boggy spot in woods (Petersburg), in undergrowth near stream in forest (Weldon), in rank weedy undergrowth on wet ground on edge of pine forest (Fayetteville, Wilmington, Lake Waccamaw), com- mon on or near the ground in low green vegetation growing on edge of "branch" filled with deciduous trees (Florence) and attracted to light in hotel room (Albany). This species is known on the Atlantic coast as far north as West- brook, Connecticut; it has been correctly recorded westward to Brownsville, Texas. Numerous records of pulicaria from as far north- west as Cuming County, Nebraska, and the Mississippi River, Minnesota, apply to this species. Anaxipha pulicaria (Burmeister). PI. XIV, fig. 20. North Carolina. Miami, 1887, (E. A. Schwarz), 19, Raleigh, VII, 8, 190:-!, (A. P. Morse), I1"- S. N. M.]; (Mrs. A. T. Slosson), 1 cf", 1 9 . 1 [M- L- Z-]- South Carolina. Texas. Florence, IX, 6, 1911, (R. & H.), 19. Doucette, VII, 24, 1912, (H.), 1 tf, Yemassee, IX, 4, 1911, (R. & H.), 19. 1 1911< > Virginia. Hebardville, V, 15, 1915, (H.), 19, Near Washington, D. C, V, 30, 1883, f, 2 Juv- ? ■ , . „„ 19, [Hebard Cln.]. Suwannee Creek, VIII, 28, 1911, (H.), Petersburg, VII, 22, 1913, (R. & H.), _ l IX> 6- 1911, (R. & H.), 1 tf. State Dept. Agr.]. ■ Georgia. Raleigh, VIII, 24, 1905, X, 3, 1908, Hpschton, VII, 26, 1909, (H. A. (C. S. Brimley), 1 ; IX, 1 to 5, 1913, (J. C. Bradley), 1 tf. Albany, VIII, 1, 1913, (R. & H.), 19 cf, 26 9, 3 juv. 9. Thomasville, VI, 29, 1903, (for Hebard), 1 juv. cf, [Hebard Cln.]. Florida. Jacksonville, (T. J. Priddey), 1 d", 1 9 , [Hebard Cln.]. Sanford, (G. B. Frazer), 1 d\ [M. C. Z.]. The large series before us shows little size variation. The majority of specimens from the more southern points average darker in coloration, with colors more intense and brilliant. In this species the wings are always present and nearly as long as, but wholfy concealed by, the tegmina. The material here studied was taken : in weeds near Rappahannock River (Fredericksburg), in green undergrowth of heavy forest near stream (Weldon), common in low green undergrowth of "branch" and beaten from heavy green undergrowth in short-leaf pine forest (Columbia) , beaten from undergrowth of long-leaf pine woods (Ashley Junction), scarce in tall weeds near stream in oak and short-leaf pine woods (Buckhead), in small clump of sweet gum shoots in gray- bark pine forest (Sandfly), in heavy undergrowth of gray-bark pine forest (Isle of Hope) and common in tangles of small bushes and vines along Flint River (Albany). The species has been recorded as far north on the Atlantic coast as Staten Island, New York; west- ward its distribution extends far beyond the regions here under consideration. Hapithus agitator agitator Uhler. District of Columbia. Washington, X, 1883, Id", 2 9, [Hebard Cln.]. Virginia. Fredericksburg, VII, 20, 1913, (R. & H.; common in undergrowth of deciduous forest), 2 juv. 9 . Orange, VII, 21, 1913, (R. & H.; very scarce in undergrowth of deciduous forest), 1 juv. d". Petersburg, VII, 23, 1913, (H.; in vegetation of boggy spot near- woods), 1 juv. 9 • Norfolk, IX, 8, 1903, (A. P. Morse), 1 cf, 3$. We have a large series of adults before us from more northern points on the Atlantic coast, where the species has been recorded as far north as Tottenville, Staten Island, New York. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 309 This geographic race is found to merge with the more southern race, agitator quadratus, along the fall line in North Carolina, this being shown by intermediate material before us from Raleigh. These races show little definite differentiation, but typical agitator may be said to differ from agitator quadratus in the average smaller size; tegmina which normally do not quite reach the distal extremity of the abdomen, in the male with speculum normally lacking a trans- verse vein and with length of same more nearly approximating its width, in the female with veins normally more irregular and not affording a pattern as generally longitudinal; the caudal femora in length also average proportionately slightly less. A large series before us from other points in the southeastern United States, particularly those on the Piedmont plateau, are immature, and we are consequently unable to assign the individuals properly. We believe, however, that agitator agitator occurs on the Piedmont plateau at least as far south as Atlanta, Georgia. This race is known to occur as far westward as the timbered portions of eastern Nebraska. Hapithus agitator quadratus Sruddor. North Carolina. Florida. Wrightsville, IX, 7, 1911, (R. & H.), Jacksonville, (T. J. Priddey), 4 cf , 10 d\ 15 9 , 1 juv. cf . 19, [Hebard Cln.]. Wilmington, IX, S, 1911, (H.), 1 cf, Atlantic Beach, VIII, 24 and 25, 1911, 19. (R. &H.), 4 cf, 5 9. Lake Waccamaw, IX, 8, 1911, (R. & Grant, VII, 189S, 1 cf, 19, [Davis H.), 4 d", 4 9, 1 juv. 9. Cln.]. South Carolina. M?™'J^^ T" SlosSOn)' X *> 19, [M. C. Z.]. Texas. Florence, IX, 6, 1911, (R. & H.), 1 cf , 2 9,1 juv. 9 . Ashley Junction, VIII, 15, 1913, (R.), Doucette, VII, 24, 1912, (H.), 19. 2 cf , 3 juv. cf , 5 juv. 9 . Dallas, (J. Boll), 1 cf , 1 9 , [M. C. Z.]. r . Kerrville, VIII, 17, 1912, (H.), 1 9 . uemaia- Flatonia, VIII, 20, 1912, (H.), 2 cf . Savannah, VIII, 14, 1903, (A. P. San Antonio, VIII, 16, 1912, (R. & Morse), 6 cf , 8 9 , 2 juv. 9 . H.), 2 cf • Isle of Hope, IX, 3, 1911, (R. & H.), Victoria, VII, 27, 1912, (H.), 8 cf , 9 cf , 10 9 , 1 juv. cf , 2 juv. 9 . i 9 , 1 juv. 9 . St. Simon's Island, VIII, 30, 1911, Brownsville, VII, 31, 1912, (PL), 4 cf, (R. & H.), 2 cf , 5 9 . " 39. Albany, VIII, 1, 1913, (R. & H.), pjper Plantation, near Brownsville, 1 juv. cf • VIII, 3, 1912, (R. & H.), 1 cf , 6 9 . We have recorded above all of the previously unrec orded material of this ~eographic race from within the United States before us, in order to define more fully its known distribution. There is considerable variation in the coloration of the form. Occasional specimens have the caudal femora strongly infuscated 21 310 PROCEEDINGS OF THE ACADEMY OF [April, medio-longitudinally, the exposed portion of the limb below this being very pale, often cream color; a similar condition is often weakly indicated, while in many series the caudal femora are con- colorous with the general coloration. The intermediate channel in the tegmina is also occasionally strongly defined in yellowish white, often this is weakly indicated, while many individuals have this portion concolorous with the rest of the tegmen. The present material was found common in low vegetation under live oaks on barrier beach (Wrightsville), on low wet ground in undergrowth of pine woods (Wilmington, Yemassee), in green under- growth of deep forest (Florence), young numerous, but few adults in undergrowth of dry woods (Ashley Junction), common in heavy undergrowth of gray-bark pine forest (Isle of Hope), scarce in tangle of vines and bushes along Flint River (Albany), in heavy under- growth of jungle "hammock" and in bayberry bushes (Atlantic Beach), in stream bottom choked with deciduous trees (Kerrville, Flatonia), young common, few adults, in scant undergrowth of mixed pine and deciduous forest (Doucette), in rank, high green grasses and nettles along wooded stream (San Antonio), in stream bottom in tangles of vines growing in high weeds (Victoria), by beating tall green weeds in river bottom tangles (Brownsville) and in low heavy jungle tangles (Piper Plantation). We have found this race abundant in extreme southern Florida and on the Florida Keys. Hapithus brevipennis Saussure. Georgia. Billy's Island, IX, 1 to 15 and XII, Savannah, VII, 31, 1913, (J. C. Brad- 23, 1913, (J. C. Bradley), 2 f dorsum of pronotum (no cusp). (Greatly enlarged.) Fig. 4.— Tettigidea armata Morse. Florence, South Carolina. Male. ( hitline of cephalic margin of dorsum of pronotum (moderately cuspidate). (Greatly enlarged, i Fig. 5. — Tettigidea armata Morse. Florence, South Carolina. Male. Out- line of cephalic margin of dorsum of pronotum (strongly cuspidate). (Greatly enlarged.) Fig. (i. — Orphulella halophila new species. Key West, Florida. Female (type). Lateral figure. (X 2) Fig. 7. — Same. Female (type). Dorsal outline of head and pronotum. .(X2) Fig. 8. — Same. Male (allotype). Dorsal outline of head and pronotum. .(X2) Fig. 9. — Spharagemon crepitans (Saussure). St. Simon's Island, Georgia. Male. Dorsal figure. (X 2) Fig. 10. — Same. St. Simon's Island, Georgia. Male. Lateral figure. (X2) Fig. 11. — Melanoplus nubilus new species. Fayctteville, North Carolina. Male (type). Lateral outline. (X 2) Fig. 12. — Melanoplus stegocercus new species. Cannoche River at Grove- land, Georgia. Male (type). Lateral outline. (X 2) Fig. 13. — Melanoplus minis new species. Weldon, North Carolina. Male (type). Lateral outline. (X 2) Fig. 1-4. — Melanoplus scapularis new species. Jesup, Georgia. Male (type). Lateral outline. (X 2) Plate XIII. — The enlargement of the supra-anal plates is about 10 times, of the cerci about 25 times and of the subgenital plates about 10 times. Fig. 1. — M elanoplus decorus Scudder. Winter Park, North Carolina. Male. Dorsal figure of supra-anal plate and furcula. Fig. 2. — Same. Winter Park, North Carolina. Male. Lateral outline of cercus. Fig. 3. — Melanoplus australis Morse. Isle of Hope, Georgia. Male. Dorsal figure of supra-anal plate and furcula. Fig. 4. — Same. Isle of Hope, Georgia. Male. Lateral outline of cercus. Fig. 5. — Melanoplus att< nuatus Scudder. Magnolia, South Carolina. Male. Dorsal figure of supra-anal plate and furcula. Fig. 6. — Same. Magnolia, South Carolina. Male. Lateral outline of cercus. Fig. 7. — Melanoplus hebardi (Rehn). Tyty Plantation, Thomas County, Georgia. Male (type). Dorsal figure of supra-anal plate and furcula. Fig. 8. — Same. Male (type). Lateral outline of cercus. Fig. 9. — Melanoplus nubilus new species. Fayctteville, North Carolina. Male (type). Dorsal figure of supra-anal plate and furcula. Fig. 10. — Same. Male (type). Lateral outline of cercus. Fig. 11. — Melanoplus stegocercus new species. Cannoche River at Grove- land, Georgia. Male (type). Dorsal figure of supra-anal plate. Fig. 12. — Same. Male (type). Lateral outline of cercus. Fig. 13. — Same. Male (type). Lateral outline of subgenital plate. Fig. 14. — Melauii/ilus mints new species. Weldon, North Carolina. Male (type). Dorsal figure of supra-anal plate. Fig. 15. — Same. Male (type). Lateral outline of cercus. Fig. 16. — Same. Male (type). Lateral outline of subgenital plate. Fig. 17. — Melanoplus scapularis new species. Jesup, Georgia. Male (type). Dorsal figure of supra-anal plate. 314 PROCEEDINGS OF THE ACADEMY OF [April, Fig. 18. — Same. Male (type). Lateral outline of cercus. Fig. 19. — Melanoplus strumosus Morse. Currahee Mountain, Georgia. Male. Dorsal figure of supra-anal plate and furcula. Fig. 20. — Same. Currahee Mountain, Georgia. Male. Lateral outline of cercus. Fig. 21. — Same. Currahee Mountain, Georgia. Male. Lateral outline of subgenital plate. _ Plate XIV. — Fig. 1. — Melanoplus quemeus new species. Thomasville, Georgia. Male (type). Lateral outline of cercus (X 5) Fig. 2. — Same. Male (type). Lateral outline of cercus and subgenital plate. (XU) Fig. 3. — Same. Male (type). Dorsal figure of supra-anal plate. (X 5) Fig. 4. — Scapteriseus vicinus Scudder. St. Simon's Island, Georgia. Female. Lateral outline (internal) of dactyls of cephalic tibia. (X 4§) Fig. 5. — Same. St. Simon's Island, Georgia. Female. Dorsal figure of pronotum. (X 2) Fig. 6. — Same. St. Simon's Island, Georgia. Female. Lateral outline (external) of distal joint of caudal tarsus and claws. (X 4) Fig. 7. — Same. St. Simon's Island, Georgia. Female. Lateral outline (internal) of spatula. ( X 4|) Fig. 8. — Scapteriseus acletus new species. Hebardville, Georgia. Male (type). Lateral outline (internal) of dactyls of cephalic tibia. (X 4|) Fig. 9. — Same. Male (type). Dorsal figure. (X 2) Fig. 10. — Same. Male (type). Lateral outline (external) of distal joint of caudal tarsus and claws. (X 4) Fig. 11. — Same. Male (type). Lateral outline (internal) of spatula. (X4|) Fig. 12. — SrapUriscusmexicanus (Burmeister). Durango, Mexico. Female. Lateral outline (internal) of dactyls of cephalic tibia. (X 4 \) Fig. 13. — Same. Durango, Mexico. Female. Dorsal figure of pronotum. (X2) Fig. 14. — Same. Durango, Mexico. Female. Lateral outline (external) of distal joint of caudal tarsus and claws. (X 4) Fig. 15. — Same. Durango, Mexico. Female. Lateral outline (internal) of spatula. (X 4|) Fig. 16. — Scapteriseus abbreviatus Scudder. Musa Isle near Miami, Florida. Female. Lateral outline (internal) of dactyls of cephalic tibia. (X 4-i) Fig. 17. — Same. Musa Isle near Miami, Florida. Female. Dorsal figure of pronotum. (X 2) Fig. 18. — Same. Musa Isle near Miami, Florida. Female. Lateral out- line (external) of distal joint of caudal tarsus and claws. (X 4) 'Fig. 19. — Same. Musa Isle near Miami, Florida. Female. Lateral out- line (internal) of spatula. (X 4|) Fig. 20. — Anaxipha pulicaria (Burmeister). Beaumont, Texas. Male. Cephalic figure of head. (Nearly X 5) Fig. 21. — Anaxipha vitlata (Bolivar). Atlantic Beach, Florida. Male. Cephalic figure of head. (Nearly X 5) PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XII. REHN and HEBARD: STUDIES IN DERMAPTERA AND ORTHOPTERA. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XIII. REHN and HEBARD: STUDIES IN DERMAFTERA AND ORTHOPTERA PROC. ACAD. NAT. SCI. PHILA. 191G. PLATE XIV REHN AND HEBARD: STUDIES IN DERMAPTERA AND ORTHOPTERA. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 315 HUNTING MOLLUSCA IN UTAH AND IDAHO. BY JUNIUS HENDERSON AND L. E. DANIELS. The investigations of Hemphill prior to 1890 in Idaho and north- eastern Utah, made that region classic ground in western American conchology. ( >wing to the existence of many small mountain ranges, in most instances conchologically unexplored, isolated by great expanses of arid territory wholly unfavorable to the larger land snails, in western Utah, Idaho, and Nevada, that area is an attractive field, and some of us have viewed it with longing. It is likely that every range not yet explored will yield one form or more of Oreohelix new to science. Indeed, we found a very interesting new form very close to one of Hemphill's localities, and in the same range. Probably Utah is approximately the center of distribution of the genus Oreohelix, and a thorough understanding of its forms and their distribution and habits may throw considerable light upon general problems of distribution of plants and animals in the Rocky Moun- tains and Great Basin, a thing devoutly to be wished. Before beginning serious work upon the unexplored ranges, it seemed to us important to clear up" some of the many difficulties arising from a critical study of Hemphill's records and collections, in order to reach a better understanding of his species and varieties. He explored particularly the western edge of the Wasatch mountains and their spurs bordering the Great Salt Lake Basin on the east, thence north- ward into Idaho and southwestward to the Oquirrh Mountains, which extend southward from the southern end of Salt Lake. His published localities are exceedingly indefinite, as applied to snails of a genus whose colonies are usually of very limited extent and whose varieties are in many instances limited in their known range to the type locality. They were found to be even more indefinite in the field than they looked on paper. In the collections he dis- tributed the labels are still more vague and sometimes misleading. However, we obtained material from somewhere near some of his stations, at least. Inconsistencies in the descriptions and figures of material collected by Hemphill render the determination of some of the snails of the region difficult. We have been greatly assisted in this work by the loan to the University of Colorado, by Dr. Geo. H. Clapp, of his two 22 316 PROCEEDINGS OF THE ACADEMY OF [May, fine series of Hemphill's varieties, which have been critically examined by one of the authors. The other author has some of Hemphill's material in his own collection. One of Mr. Clapp's collections was formerly owned by Mrs. Geo. Andrews. The shells in this series are mounted on 57 blue cards bearing the printed legend "Genus Pyramidula. Group of Pyra- midula alternata." White printed slips pasted below the specimens, use the generic name Helix instead of Pyramidula, and all of the Oreohelices are labelled as varieties of P. alternata. All of the printed labels for the Utah material give the localities merely as "near Salt Lake," evidently meaning the lake itself, not the city of that name. Included in that vague locality are shells that undoubtedly came from as widely separated areas as the Oquirrh mountains on the south and Franklin, Idaho, on the north. This collection seems to have been made up during or after 1890, as it includes forms described that year. The other series was purchased by Dr. Clapp directly from Hemphill in 1896, at 25c per lot, 153 trays of two specimens each. The printed labels in this series designate all the Oreohelices as varieties of Helix strigosa, and the locality stated for all the Utah material is simply "Utah," but in most instances more definite localities, such as "Box Elder Co.," "near Ogden" and "near Salt Lake," have been added with pen and ink.1 The soft anatomy of each lot of Oreohelix collected alive, with a few exceptions, has been studied by Dr. Pilsbry, whose comments may be found in a separate paper prepared by him. We are also greatly indebted to him for aid in identification of some of our material, and for advice in clearing up difficulties in nomenclature and the literature of the subject. The authors met, by appointment, at Eureka, Utah, on August 26, 1915, and worked northward into the edge of Idaho, finishing the field work on September 17. Mr. Daniels had visited Stations 1, 1§, 2, 3, 4 and 5 on his way down from Montana to the rendezvous, but we both afterwards visited No. 5, dividing it into three stations, namely 30, 31 and 32, besides visiting others in the same vicinity. The main object of the expedition was to study the Oreohelices, and as our time was limited, but little of it was spent in the search for other genera. 1 Some of the earlier sets sent out by Hemphill, such as that in the museum of The Academy of Natural Sciences of Philadelphia, have practically the same data on the labels that were given by him in Binney's Supplement and The Nautilus; most of the labels being printed. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 317 Limestone is common at almost every locality visited, this being a favorable condition for Oreohelix. The edges of coarse, angular limestone talus protected from rapid evaporation by overhanging 1 tushes, formed the cover for some of the finest colonies we have seen, the snails occupying crevices among the rocks. At other localities they were abundant under vegetation on limestone slopes totally devoid of talus, and in a few instances they were found in talus where no limestone was observed, though it is almost certain that the soil or rock must have contained a fair percentage of lime in such cases. As some forms were discovered at but one or two stations, we could not determine whether each form chooses definitely a particular kind of cover, but the widely-distributed depressa is found indifferently under either rock or vegetative cover. The kind of vegetation did not seem to be important except as affecting its value as a cover to protect the snails from the sun's rays. In the lots obtained after the first few days of September very few embryos were found. This is unfortunate, as the sculpture and shape of the embryonic whorls are important in classification and they are often much worn in adults. The summer was hot and extremely dry and snails of course were dormant — over ninety days without measurable rain. After the rains commenced on September 2 they became active and filled with water, and large numbers were found in copulation. A very noticeable feature of the season's catch is the great difference in the color banding of various colonies of what would otherwise be considered the same form. The protean 0. peripherica (Ancey) is a remarkable example, but scarcely less noteworthy than 0. s. depressa (Ckll.) and some others. The important fact is that where the banding is weak or wanting on some specimens and strong on others from the same colony, the faintness or absence of bands is most pro- nounced on the last whorl. This would be interpreted, under the recapitulation theory, to indicate that the color banding is an ancient character of this genus and is in process of disappearing. The question of recognizing subspecies, varieties and color forms is an ever-recurring one in this genus, many of whose species vary greatly in color, form and sculpture. The practice in American ornithology and mammalogy is to give subspecific rank to geographic races where the great majority of examples in one area differ in the same direction and degree from those of another area. The presence of a smaller number of intergrading forms within the range of either and especially along the common border prohibits specific rank, 318 PROCEEDINGS OF THE ACADEMY OF [May, the constancy or lack of constancy of characters determining the rank. This method, though requiring a zoological map for the identification of some individuals, seems the most satisfactory way to deal with such cases, where most of the examples from a given area clearly fall into a given subspecies, comparatively few failing to conform; but where mere average characters are used for the separation of such forms, and especially where abnormal specimens are selected and named, it is surely objectionable unless some term is used to indicate a rank lower than subspecies. Professor Cockerell some time ago2 suggested the use of the term "mutation" to designate sporadic variations from modification of the germ-plasm, "form" for variations resulting from the immediate effect of environment upon the individual, and "variety" for all other variations of lower rank than subspecies. Such use of the terms "mutant" and "form" would imply much greater knowledge of causes of variation than we usually possess. It involves too much guessing as to the cause of a particular variation in a particular case, and in most cases it is impracticable to solve the problem by careful experimentation; indeed, sometimes perhaps impossible. On the other hand, the term "variety" is very confusing because it is so variously used. As is pointed out in the article just refrered to, well-known naturalists use it as an exact synonym of "subspecies" and also as a synonym of "form" and "mutant." This was true of Hemphill and Binney, but we should have progressed since their time. Some forms desig- nated varieties by those gentlemen are so distinct that nowadays no naturalist would hesitate to give them full specific rank. On the other hand, however, Hemphill in several cases selected abnormal specimens from a colony and gave them several varietal names, and was not always even consistent in the use of such names in sorting his material for distribution. Had he made it clear in just what instances his varieties were so selected, and in what cases they were really from quite distinct colonies and fairly represented the colonies, it would be easier for us now. If, for example, his oquir- rhensis and gabbiana were from separate colonies as indicated by his notes and partially confirmed by our material, most of the material from one colony conforming to one type and most of it from the other colony conforming to the other type, we should be justified in con?idering them two subspecies, notwithstanding intergrading examples in either colony. In some cases we can only determine the "-Nautilus, XX, 58-60. 1.916,] NATURAL SCIENCES OF PHILADELPHIA. 319 question by additional field work, and that is rendered more difficult by the vagueness of his locality data. Sometimes we arc aided by a careful reading of all the text of his descriptions. Thus, in reading the descriptions of his 0. subcarinata, bicolor and lacteal one without access to his material might well suppose that he was describing really distinct subspecies from separate colonies in the same region, but to his description of lactea he added a note to the effect that "the above varieties represent a colony of the largest specimens of the strigosa group," etc. From an examination of some of Hemp- hill's material one of the present authors decided that they were not separable before lie noticed that note, and Hemphill was certainly not consistent in sorting these "varieties" for distribution. One might be pardoned, then, for suspecting that his jugalis and intersum, both from the "banks of the Salmon River," represent a similar instance, but an examination of a small amount of material under those names in Clapp's Hemphill collection indicates that they may be distinct and from different colonies. In dealing with land snails of the semi-arid region, with their limited locomotive powers and prohibitive environmental barriers between colonies, a colony may be the equivalent of a geographic race or subspecies in other classes of animals. The fact that we do not perceive environmental differences in different colonies which would result in geographic races, may merely represent our ignorance of certain factors or of their importance in snail life. Some perfectly good species and subspecies are known from only one locality. It follows, then, from the foregoing remarks, that if nearly all of the members of a colony or group of colonies vary in the same direction and approximately to the same degree from other colonies occupied by the nearest known relatives, but sporadic individuals of the one are found with the other, then one may perhaps be justified in considering them different subspecies. When not fully satisfied that the difference is of a kind or sufficient in degree to be entitled to specific or subspecific rank, the varietal name may be preceded by the word "form," to distinguish it from a subspecies. There are certain characters which are of doubtful value at all times as sub- specific characters, unless accompanied by other differences. Such, for example, is size, which may be greatly influenced in one or more colonies or portions of colonies by exceptionally favorable or unfavor- able conditions, as where examples from the midst of a dense thicket Nautilus, III, 133-134. 320 PROCEEDINGS OF THE ACADEMY OF [May, are larger than those from the edge of the thicket where cover is poor and periods of activity and growth fewer or shorter. A great many, if not all, mere color variations may fall into the same class, though sometimes color differences may be correlated with other undiscovered differences. As for selecting abnormal specimens which completely grade into the typical form in the same colony and giving to them varietal names, as was done by Hemphill and is now being done by various authors, the value to science of such a practice is doubtful. Colton,4 in discussing the genus Lymncea, protests against its generic subdivision, but adds: "Species and minor groups on the other hand cannot be too much subdivided. It is an advance to describe every variation that can be distinguished." Probably no one would object to the describing of all distinguishable variations, but there is room for grave difference of opinion as to the advisability of naming all such variations, which Colton seems to advocate in quoting with apparent approval the following from Bateson: "They will serve science best by giving names freely and by describing everything to which their successors may possibly want to refer and generally by subdividing their material into as many species as they can induce any responsible society or journal to publish." It is quite possible to carry the naming of species and varieties altogether too far, especially in such a genus as Oreohelix. One may easily, by taking averages of color, form and size, make a score of colonies of 0. strigosa depressa into as many distinct varieties, which, when seen in the mass and compared with each other, could be vaguely distinguished, but when compared with all the colonies from which we have collections would be quite indistinguishable, and not at all distinguishable from each other with only a few specimens in hand. Of such is Hemphill's "var. carnea." A nearly complete suite of the material upon which this report is based has been placed in the cabinet of The Academy of Natural Sciences of Philadelphia. The Tintic Mountains. This is a range of irregular outlines covering considerable territory just west of central Utah. It was hitherto conchologically unex- plored, and as we spent but one afternoon collecting here and made but one station, it would doubtless well repay further exploration, 4 Nautilus, XXVIII, 118. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 321 especially the western spurs, which we did not visit, and which are further from territory thus far explored. Tintic folio, U. S. Geol. Surv., covers the Eureka district. Oreohelix oooperi (W. G. B.) Sta. 6, on north side of Godiva Mountain, in Eureka, Utah, on a slope of Paleozoic limestone, under shrubs and other vegetation, a few under angular blocks of limestone, no good rock slides exposed. A small form of this species is abundant here. We at first thought it might prove to be new, but it differs from typical cooperi of other localities only in its size, and, in average examples, a more nearly pure white ground color. The latter character, however, is quite variable here, but the size is unusually uniform, averaging about 14.5 mm., and varying scarcely a millimeter therefrom, one way or the other. Oreohelix hemphilli eurekensis new subspecies. PL XV, figs. 7, 8. Shell small, sublenticular; spire slightly elevated; whorls 4§ to 4|, strongly carinated at the periphery, the carina having a tendency to disappear toward the aperture of adults; whorls rounded above, sloping roundly in to the suture so as to form an excavated suture, and on the other hand sloping flatly to the periphery; transverse sculpture well marked, irregular; spiral sculpture consists, in the type, of 6 minute, beaded lines below the periphery, with very indis- tinct lines in the interspaces and in the edge of the umbilicus; similar sculpture above, but not so well defined nor so plainly of two grades; on the cotypes the lines are not so well defined and not so plainly of two grades below; umbilicus wide, exhibiting all the volutions; apical whorls brown, very dark brown in the type, changing to dirty white on the last whorl; two very obscure dark spiral bands, one above, the other barely below the periphery. Type, in Univ. of Colo. Museum, greater diam. 9.7, lesser 8.8, alt. 5.5. Cotype, in Acad. Nat. Sci. Phila., greater diam. 9.3, lesser 8.5, alt. 6.5. Type locality, Sta. 6, Eureka, Utah, 7 specimens, all dead shells, associated with 0. cooperi. The type and cotype are adults, and one specimen in L. E. Daniels' collection probably fully adult but with the peristome partly broken away. These specimens were all submitted to Dr. Pilsbry, who writes as follows: "I at first thought your little species from Eureka was 0. carinifera, but on further study I am wholly of the opinion that it is a small subspecies of 0. hemphilli. It differs chiefly by its smaller size and fewer whorls, the sculpture, color and degree of carination being practically identical. 0. hemp- 322 PROCEEDINGS OF THE ACADEMY OF [May, hilli has the last embryonic whorl a trifle concave near the periphery, where yours is only flattened, but the difference is not great. 0. carinifera has the embryonic whorls well rounded throughout, above; it is more depressed and the keel is decidedly pinched out on the last whorl. It may turn out to be another subspecies of hemphilli, but with present collections I hardly think so. I do not know what form Binney identified as hemphilli from Colorado. My comparisons were with the figured type and a young one of the original lot. " The Oquirrh Mountains. This range extends southward from the southern end of Great Salt Lake. Hemphill visited the west side of the range,5 and reported a very interesting series of finds, with 0. utahensis at the foot of the mountains, 0. oquirrhensis a short distance up the mountain side, then along the mountain side across a ravine the typical haydeni and gabbiana, and near the summit a few haydeni and two cooperi. We searched the canyons around Tooele without finding any of these forms. Then we proceeded to Garfield and worked southward along the west side of the range for many miles and only found one species, at stations 14 and 15. Material labelled haydeni in Clapp's Hemphill collection does not appear to belong to that species. Station 11, cottonwood grove at picnic grounds just within mouth of gulch southeast of Tooele from which gulch the town obtains its water supply. Paludesirina longinqua (Gould), abundant in water-cress. Pyramidula cronkhitei anthonyi Pils.. 14 specimens. Euconulus sp., 1 juvenile. Vitrina alaskana Dall, 2 dead shells. Zonitoides arborea Say, 3 specimens. Pupilla blandi Morse, 1 specimen. Station 12, up the canyon a short distance above Station 11, in rock slide, mostly quartzitic sandstone. Vitrina alaskana Dall, 3 specimens. Pyramidula cronkhitei anthonyi Pils., 3 specimens. Vitrea indentata umbilicata (Ckll.), 12 specimens. Oreohelix strigosa depressa (Ckll.) common. Oreohelix strigosa depressa (Ckll.). Sta. 12 (see above) ; Sta. 13, about a mile above Sta. 12, on south side, under mountain maple leaves. These two lots are typical in 6 Binney's 2nd Suppl. to 5th Vol. Terr. Moll. U. S., pp. 29-34. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 323 form, sculpture, color and size, as compared with average examples from Colorado, with two strong color bands, one barely below the periphery, the other well above. Probably all or nearly all of Hemphill's Utah records of 0. strigosa (Gould) should be referred to this subspecies. This is true of the material labelled strigosa in Clapp's Hemphill collection. Oreohelix strigosa depressa, form tooelensis new form. This form differs from depressa chiefly in the color, which is almost invariably a dead, chalky white, in all the material from three colonies northeast of Tooele, Utah, giving the specimens the appear- ance of dead, weathered shells, in this respect quite unlike the colonies of depressa from southeast of Tooele and elsewhere. Shell depressed (in a few examples quite elevated); whorls 5 to 5f, convex; suture well impressed; spiral stria? minute; transverse sculpture slightly less pronounced than in typical depressa, especially below; color bands narrow, sometimes strongly marked, but usually rather faint or wanting, one barely below and the other well above the periphery, strong on immature examples; first embryonic whorl smooth, second anil third minutely transversely striate, with numerous spiral stria? rippling the transverse sculpture above and below and increasing in strength with the growth of the whorls. Type, in the University of Colorado Museum, greater diam. 19 mm., lesser 16.5 mm., alt. 11.5 mm. Co-type, in Academy of Natural Sciences of Philadelphia, greater diam. 19.6 mm., lesser 17.2 mm., alt. 11.4 mm. Co-type, in L. E. Daniels' collection, greater diam. 23 mm., lesser 20 mm., alt. 13.5 mm. This form also slightly differs from typical depressa in anatomy, according to Dr. Pilsbry, but this is a variable feature. The presence sporadically of white examples in depressa and other colonies of Oreohelix belonging to the strigosa group, even though not the dead white which characterizes this form, makes it inadvisable to give this subspecific rank, notwithstanding the fact that the color in these colonies is constant, unless other differences are found which are also constant. Abundant at stations 7, 8, 9 and 10, in the small gulches about six miles northeast of Tooele, north of the smelter, under grass and other vegetation about limestone ledges. Four sinistral specimens were found. Oreohelix haydeni gabbiana (Hemphill). PI. XVI, fig. 3. Patula strigosa var. gabbiana Hemphill, per Binnev, 2nd Suppl. to 5th Vol. Terr. Moll. U. S., pp. 30, 34, PI. II, fig. 9, 1886. St a. 14, mountain side southwest of Garfield (southeast of Black Rock) west side of Oquirrh Mts., under bushes, on limestone. The 324 PKOCEEDINGS OF THE ACADEMY OF [May, locality had been burned over some years ago, and though the shrubbery had re-established itself, we found no live snails. The "bones" had been long dead. A more thorough search would likely disclose live ones in the neighborhood, as fires usually leave "islands" where such species may be preserved alive. Dead shells were fairly plentiful. A careful conchological survey of this whole range would probably prove profitable. Especially should Hemp- hill's "haydeni," oquirrhensis and utahensis from this vicinity be investigated. Sta. 15, south side of a gulch south of Sta. 14, nearly east of Morris, under shrubbery and other vegetation about limestone ledges, not under rocks. This locality had been very recently burned over and the fire was still raging to the southward. We found numerous examples of this species on the burned ground, in a crumbly con- dition owing to the heat, but in a few small patches of brush untouched by the fire we found about thirty live ones. It is not improbable that the gulch where the fire was burning is the Hemp- hill locality. The examples from Sta. 14 are old and much weathered, so that the sculpture is obscure on most of them, but where preserved it is the same as in those from Sta. 15, though the carina is not so pro- nounced on the average, and they vary more in size and altitude. This is a strongly carinated form, otherwise resembling Hemphill's variety hydrida, from Logan. In the best specimens the revolving riblets may be seen with the naked eye, with revolving threads in the interspaces visible under a lens, the intersections of these rib- lets and threads with the irregular transverse riblets, give to it a knobbed appearance as seen under a lens. This sculpture is charac- teristic of the haydeni group. The primary revolving riblets, six or eight in number, are rather regularly spaced, especially below. Most of our specimens are under 16 mm. in diameter, but the largest one measured is 22 mm., and has two rather strong color bands, one barely below and the other well above the periphery. The Provo District. Provo is south of Salt Lake City and at the base of the same range of mountains, hence it is not surprising to find the same species common here. Hemphill reported "typical strigosa and cooperi, large and small," from this locality. Doubtless his strigosa was depressa. 1910.] NATURAL SCIENCES OF PHILADELPHIA. 325 Oreohelix strigosa depressa (Ckll.). Sta. 44, visited by Daniels only, Rock Canyon, due east of Provo, in limestone slides bordered by oak brush. Many examples with the color bands faint or wanting, a few strongly banded. Two sinistral shells were found. Shows same anatomical peculiarity as at Tooele. St a. 7. Sta. 45, visited by Daniels only, Slate Canyon, first one south of Sta. 44, limestone slides bordered by scrub oak brush. Banding even less prominent than at Sta. 44. The Salt Lake City District. Oreohelix strigosa depressa (Ckll.). Sta. 46, about a mile up Emigration Canyon, southeast of Salt Lake City, south side of canyon, under mountain maples and other vegetation in fine limestone slide rock. This is a strongly banded form whose anatomy, according to Dr. Pilsbry, agrees with that of depressa from Colorado Springs and other localities, as well as from our stations 2 (near McCammon, Idaho) and 28 (near Brigham, Utah). The shells, however, of this lot and those from Sta. 2 differ markedly from those of typical depressa from Durango, Morrison, Steamboat Springs and other Colorado localities. Their relative altitude and the altitude of their whorls in proportion to the trans- verse diameter are much greater, and they scarcely show any of the peripheral subcarination in front of the aperture so common, indeed almost universal, in Colorado shells of this subspecies. On the other hand, however, other lots from elsewhere in Utah, notably near Ogden, appear to grade this lot quite well into typical depressa, so that, from any information we now have, we do not dare to make any separation. Oreohelices usually differ in relative altitude within any given species or subspecies, and only the uniformity of the increased altitude in this colony makes us hesitate. Oreohelix strigosa depressa (Ckli.). "var. carnea" (Hemph.). Patiiln, strigosa var. carnea Hemphill, Nautilus, IV, 15, 1890. Binney, 4th Suppl. to 5th Vol. Terr. Moll. U. S., p. 174, 1892. Sta. 43, Dry Canyon, about a mile from the University of Utah, near Salt Lake City, in scrub oak and mountain maple thickets on limestone, visited by Henderson in company with William McArthur. This form was found abundantly here, the color bands faint or wanting on most examples, but quite strong on a few. On an average the specimens have a higher spire than typical depressa, but many of them are well depressed. The description of depressa appeared 326 PROCEEDINGS OF THE ACADEMY OF [May, in the same magazine in January, 1890, the reference to Binney's figure seeming to make it a good description, thus antedating carnea by five months. 0. var. carnea is not a well-marked variety, and the question of making it a subspecies, or a mere color variety, or rejecting the name altogether, may be purely a matter of opinion, but it is not quite typical depressa. Hemphill records "typical strigosa and cooperi, both large and small," from near Salt Lake City. The Ogden District. Oreohelix strigosa depressa (Ckll.). Sta. 20, about eight miles up Ogden Canyon, east of Ogden, in rock slide below a limestone ledge at southwest end of a railroad bridge, south side of creek. Large, fine specimens, abundant, strongly banded, some measuring over 26 mm., a few very dark- colored. Professor Cockerell says this is the sort of snail he called "form major."6 Sta. 21, north side of creek, \ to \ mile below Sta. 20, under moun- tain maples, a few large specimens, up to 26 mm., and up slope in rock slide, the same form abundant, but averaging smaller, about 21 mm. Sta. 22, south side of creek, half a mile further down, in slide of limestone and a micaceous rock, same subspecies, large, exceedingly abundant. Also half a mile further down under similar conditions. Dr. Pilsbry says of the Oreohelix from this station. "This lot is representative of a race of strigosa slightly differing from depressa in anatomy. The shells seem to me to differ by being less sharply striate, but were it not for the genital difference I would probably not have noticed this." A later letter, however, says that two lots afterwards examined seem intermediate, so that the argument from the anatomy is weakened, and there is no appreciable difference in the shell characters. The same anatomical differences he noted for stations 7, 10 and 13, near Tooele. Sta. 23, further down creek on south side, opposite thick deposit of consolidated Quaternary gravel, in gneissic slide rock and adjacent bushes, with limestone showing far up slope at top of canyon wall, from which the wash is down over the slide. The same subspecies of Oreohelix, abundant, mostly rather high-spired. At Sta. 22 we found also one of each of the following species : 6 See Nautilus, III, 102. 1016.] NATURAL SCIENCES OF PHILADELPHIA. 327 Suceinea avara Say. Thysanophora ingersolli (Bland). Agriolimux aimpc.slris (Binney). It may be well to add that this canyon is the type locality of Vertigo corpulenta parietalis (Ancey), and that Hemphill's Patula striatella from here is probably Pyramidula cronkhitei anthonyi Pils. Oreohelix strigosa buttoni (Hemph.). ?. PI. XVI, fig. 2. Patula sir it/"*' ' var. buttonii Hemphill, in Binney's 3rd Suppl. to 5th Vol. Terr. Moll. U. S., p. 220, 1S90, Box Elder Co., Utah. Binney, 4th Suppl. 5th Vol. Terr. Moll. V. S., p. 171, PI. I, Bgs. 2 and 10, 1892. Stations 16, 17, 18 and 19, Taylor Canyon, near Ogden, south of Ogden Canyon, under poison ivy, elderberry, mountain maple and other shrubbery about limestone ledges, the farthest station being about half a mile up the canyon, and 19 being just outside the canyon and to the south, at an old lime kiln. Color light brown to nearly white, color bands from very faint to strong, varying somewhat in width. Sta. 24, half hour's walk below Gateway, in Weber Canyon, southeast of Ogden, Utah, on south side of canyon in gneiss slide rock, no limestone seen, and another similar slide half a mile farther down. Sta. 25, about half mile above mouth of Weber Canyon, south side, south of canal, 400 to 500 yards below Utah Light and Railway Co.'s power plant, in a similar slide. Dr. Pilsbry has examined material from all these stations except 19, and identified it as above. Many examples have strong spiral color bands, and nearly all from 17 have. Otherwise they agree well with those under this name in Clapp's Hemphill collection. The tooth on the columellar margin is very often absent. At Sta. 17 we also found Vitrina alaskana Dall. Oreohelix peripherica (Ancey). PI. XV, fig. l. Sta. 26, west side of gulch which comes into North Ogden Canyon half a mile or so above its mouth, abundant in scrub oak and other brush on hard sandstone and conglomerate overlaid by limestone, but not found in rock slide. This species and its varieties are more fully discussed under the Cache Junction District. At Sta. 26 the specimens collected average larger and smoother, but present the usual variation in size, as well as in the coarseness of sculpture and elevation of the spire. Many are plain, others with two narrow- bands, either faint (especially on the last whorl) or well-marked. but none here with the broad, nearly black bands and white periphery of the albofasciata type, though some show a very slight tendency in 328 PROCEEDINGS OF THE ACADEMY OF [May, that direction, while a few have a faint chestnut tinge suffusing the whole shell, suggesting a tendency to approach the form castaneus. Two reversed examples were found. The Brigham District. At Sta. 27, at a spring beside a poplar grove just outside the mouth of the first canyon north of Brigham, Utah, in a thin film of water flowing over small rocks, we found a small form of Physa, which is tentatively identified as P. cooperi Tryon (?) by Mr. Bryant Walker, who adds: "Though slightly larger, these agree very well with some from California named by Hannibal." Oreohelix strigosa depressa (Ckll.). Sta. 28, up the steep canyon east of Sta. 27, in sandstone and limestone slides at edge of small mountain maple and oak thickets and other shrubbery. Conditions were not very favorable and specimens were rather scarce and small, not running above 19 mm. in diameter. The Cache Junction District. We include in this district the Wheelon, Clarkston and Newton stations, as they are all within a few miles of Cache Junction, Utah, and most of them produced some form of Oreohelix peripherica (Ancey), which we wish to discuss somewhat fully. At the stations south and west of the Junction we found the most interesting colonies of Oreohelix we have ever visited. Hemphill collected the same forms not very far from our stations, and recorded and distributed them variously as from the "banks of Bear river, 'North of Brigham, " or simply "Box Elder County, Utah." Our stations 29, 30, 31 and 32 are close to the Bear River, in Cache County, just east of the Box Elder County line. Indeed, 29 may be really within Box Elder County. Stations 33 and 34 are just west of the line in Box Elder County, and likewise close to the river. Hemphill camped on the "banks of the Bear River," north of Brigham, where the valley "was considerably broken by mountain spurs, through one of which the river had cut its way, leaving high, rocky cliffs on either side, with scattered clumps of bushes along the river and on the edges of the bluffs." Wheelon is located just where the river leaves the gorge, our Sta. 33 is not far below Wheelon, 34 within the gorge above Wheelon, 30, 31 and 32 just within the upper part of the gorge, 29 on the bank of the river just above the entrance to the gorge, while Cache Junction itself is in the valley 1916.] NATURAL SCIENCES OF PHILADELPHIA. 329 perhaps a couple of miles up the river from the gorge. A careful consideration of the topography and biological conditions, in con- nection with Hemphill's notes, convinced us that his cam]) was jusl below Wheelon, for in his search for Oreohelix he would surely have camped close to the mountains, the valley here being quite unfavora- ble to land snails. His first find was "on the brow of the bluff and the slope towards the river," evidently near his camp and surely not far from our Sta. 33. There he found his 0. binneyi, "all plain white." Binney adds, "no revolving bands of color," but his figure seems to indicate one faint, narrow peripheral band. Next he found, apparently near by, "in a clump of bushes among leaves and brush," his variety albofasdata, shell "clouded, with the broad, revolving white band at the periphery. None in the bushes were white." (Later, he modified and extended the descrip- tion, with an added figure.) At the various stations where we found typical albofasdata our experience was quite the reverse. We found at some stations the unhanded and narrowly-banded forms without albofasdata, but nowhere did we find albofasdata without a large proportion of the unhanded and narrowly-banded forms, a peculiarity of distribution reminding one of such instances as the sinistral forms of Papilla hebes and syngenes, and the bigranata form of P. muscorum, which may be found in either pure or mixed colonies. There are reasons for surmising that Hemphill sorted his material in the field and wrote his published notes long afterward from memory, which, if it be the case, may account for the dis- crepancy in our finds. Then at the rocky cliffs three miles from camp, presumably somewhere near our stations 30, 31, 32 and 34, he found binneyi among the bushes, and "the ribbed variety casta- neas" (Binney's figs. 11 and 14), "on a mossy, grassy slope directly at the foot of a high cliff," a spot which he says was continually shaded from the sun throughout the day. Across a ravine at the foot of another cliff, in wild rye, he found gouldi (Binney's figs. 5 and 16), all small, this form having two narrow dark bands, according to the figures. All these forms are transversely ribbed. At every station we found them intermingled, enormously variable in size, shape, color and sculpture, so completely grading together that we were compelled to believe them to belong to one protean species, and the same as Ancey's previously described peripherica, a con- clusion reached also by Dr. Pilsbry some time ago.7 7 Nautilus, XXVII, 153. 330 PROCEEDINGS OF THE ACADEMY OF [May, [Patula strigosa] var. newcombi was named without description by Binney in 1885 (Man. Amer. L. Shells, p. 481), designating U. S. Natl. Mus. Nos. 39,023 and 39,025 to 39,038, from "near Ogden, " "Wasatch Mountains" and "Box Elder Canyon." In his Second Suppl. Terr. Moll., 1886, he figured and briefly described it, hence the name is valid only from that date. The description and figures indicate much fewer and more widely spaced ribs than any of our material from that region. 0. wasatchensis (Hemph.) may connect up with peripherica as a subspecies, through newcombi, but it is doubtful, and until that problem can be investigated it seems better to consider it a full species. Oreohelix peripherica (Ancey). PI. XV, figs, l, 2, 3, 4 Helix idahoensis Newcomb, var. peripherica Ancey, he Naturaliste, IV, 403, 1881. Patula strigosa; vars. binneyi, multicostata, gouldi, albofasciata and cast, mat* Hemphill, in Binney's 2nd Suppl. to 5th Vol. Terr. Moll. U. S., pp. 29-32, PL II, figs. 3-6, 8, 11, 13, 14, 16, 1886; 4th Suppl., p. 171, PI. 4, fig. 9, 1S92. Patula peripherica (1882, multicostata 1886) and castaneus. Ancey, The Conchologists' Exchange, II, 64, 1887. Pyramidula strigosa binneyi and forms multicostata, castanea and albofasciata Pilsbry, Naut., XI, 141, 1898; Cat. Amer. Land Shells, p. 32, 1898. Oreohelix peripherica and local races binneyi, newcombi, multicostata, gouldi, albofasciata and castaneus Pilsbry, Naut., XXVII, 53-54, 1913. The following is a free translation from the French of Ancey's original description : "I owe to the kindness of Dr. Newcomb a second variety of this species, with the same shape as the first one, but with a more open umbilicus, ornamented on the periphery with two narrow brown lines, the lower one being more decidedly marked, and provided with ribs, close, irregular and little in relief. It so closely resembles the shape of Helix (Anguispira) cooperi W. G. Binn., that I think it might well be an hybrid displaying the characteristics of the Helix idahoensis and cooperi. It measures 9 mm. in height and 14 mm. in diameter, and comes from Utah. As to form and color it looks much like the Helix cooperi (No. 136) of Binney and Bland's Land and Fresh-water Shells of North America, but it has ribs, while the latter has none. I propose to name this interesting variety Helix idahoensis Newcomb var. peripherica.'" The ' ' first one " referred to above is O. idahoensis. We see no reason for making this a subspecies or variety of either idahoensis, strigosa or cooperi. It is interesting to note that Ancey himself pointed out its identity with multicostata and the* priority of his name, in his paper above cited from The Conchologists' Exchange. A careful study of Hemphill's material in the Clapp collection, taken in 1916.] NATURAL SCIENCES OF PHILADELPHIA. 331 connection with a study of our own material, both in the field and in the laboratory, convinces us that the forms mentioned in the foregoing synonymy should not be separated as subspecies. Some of the names may be useful as descriptive terms, provided they are used in such a way as to indicate their rank. The form albofasciata, especially, is a good color form, but the same variation is seen in various colonies of depressa and cooperi, though seldom or never quite so strikingly developed. Hemphill says of castaneus that most of them are "faintly marked with the broad white band of albofasciata, but a few are plain chestnut colored." This is exactly the variation that occurs sporadically in many colonies of depressa and cooperi, and did not warrant the sending out of material from that colony under a distinct name, though it may have been appropriate to have selected the plain chestnut-colored examples and sent them out as mere color forms. Four specimens in Clapp's Hemphill collection are labelled castaneus^ Two of them, from Box Elder County, Utah, are almost typical albofasciata. The other two, from Eastern Oregon, are not at all closely related to the others, and appear to be simply dark, unbanded examples of some undetermined species such as so frequently occur sporadically. The separation of the forms midticostata and gouldi was based chiefly upon a slight difference in the number and promi- nence of the ribs. As the ribs are extremely variable at all the stations of the species, and the material separated and labelled by Hemphill shows minute gradation in this respect, as well as in color and form, throughout his whole group of "varieties" from this district, probably no good purpose is served by retaining both of the names, though the average of the ribbing is so much more pro- nounced at some localities that it may be convenient to retain one of the names without giving it subspecific rank, in which case midticostata should be selected. St a. 29, steep east bank of Bear River below Cache Junction, just above the entrance to the gorge by which the river breaks through the mountain range to Wheelon, under shrubbery on whitish limestone. Oreohelix, connecting the unbanded forms of peripherica with the strongly banded albofasciata form. In examining 69 live specimens from a space about two rods wide and several rods long, 30 (form binneyi) are found to have scarcely a suggestion of color bands; 26 (form albofasciata) have a dark band 3 to 4 mm. wide just below the suture, then a white peripheral band of about the same width, a dark band below the periphery varying from 1 to 23 332 PROCEEDINGS OF THE ACADEMY OF [May, 4 mm., the lower margin of this band irregular, often producing a "clouded" effect, and a broad white band around the umbilicus, such as sometimes occurs around the umbilicus of strongly albo- fasciated types of cooperi and depressa; 13 grade almost insensibly from the albofasciata form to the binneyi form. Frequently a narrow white band occurs just below the suture, and the upper edge of the white peripheral band is exposed well up the spire, of the higher- spired albofasciata specimens. Transverse ribs average about two to the millimeter, rather irregular, growth lines showing in the interspaces and microscopic spiral striae on the ribs and in the inter- spaces. The color bands are very dark, often forming a striking contrast with the white peripheral and umbilical bands. Diameter 15 to 19 mm. (PI. XVII, fig. 2.) Sta. 30, southeast of Sta. 29, directly opposite the power plant dam at the entrance to the gorge, at base of Paleozoic limestone rocks on the lower slope of the mountain, where the vegetative cover is poor and rock slide absent or unexposed. Form multicostata, banding weak or absent, ribbing pronounced, diameter 12 to 16 mm., mostly dead specimens, the slope having been very recently burned over. (PL XV, fig. 2.) Sta. 31, farther up the slope, at a heavy, steep limestone ledge, beneath a decumbent species of polygonaceous plant which clings closely to the rock. Form multicostata, abundant, much smaller than at Sta. 30, most examples with a narrow and often faint subperipheral color band, and some with a similar band just above the periphery; diameter of adults from 8 to 12 mm., altitude extremely variable (PL XV, fig. 3). The snails increase in size again a hundred feet farther up the slope. Stations 30, 31 and 32 form practically a continuous colony, which we separated into stations merely because of the astonishing difference in size within a short distance. Our observations upon this genus lead us to observe that any given species is likely to vary greatly in size with variation in cover. We also found here 97 Pupilla blandi (Morse) and 5 Vallonia cyclo- phorella Ancey and V. sonorana Pils. Sta. 32, at the base of a limestone cliff above Sta. 31, where the vegetative cover is better and the cliff affords considerable shade. Forms albofasciata and binneyi, intergrading as at Sta. 29, except that few are so pronouncedly of the albofasciata type as at 29. Diame- ter from 9 to 16 mm. Sta. 33, ravine that cuts back into the east bluff of Bear River valley, just below Wheelon, Box Elder County, probably not a great 1916.] NATURAL SCIENCES OF PHILADELPHIA. 333 distance from Hemphill's camp, above irrigation canal, in a dense thicket of birches and mountain maples. Forms albofasciata and binneyi, showing the same intergradation as at Sta. 29, but a smaller proportion strongly banded. Of 324 live ones examined, only 39 showed very marked bands, most of which were as heavily banded as at 29. Diameter 16 to 18 mm. In the dried-up backwater from the canal at this point we found 80 Lymnaea parva Lea (identified by Walker), 1 Planorbis parvus Say, 7 Physa gyrina Say (?), 2 Zonitoides arborea Say and 1 Vitrina alaskana Dall. Sta. 34, above Wheelon, in a ravine on the east side of the gorge, at the south end of the railroad bridge southwest of the tunnel, only a few rods within the eastern border of Box Elder County, under mountain maple, scrub oak and other brush. The same forms of Oreohelix as at stations 29 and 33, but the albofasciata form propor- tionately more numerous than at Sta. 33, the banding varying greatly in degree as elsewhere. It will be noted that wmerever the form albofasciata was found, it was associated with the binneyi form, and that at none of the albofasciata stations was the ribbing as pronounced as at stations 30 and 31, at which none of the typical albofasciata were found. This suggests that notwithstanding the complete intergradation in all the observed characters of these snails at stations 29 to 34, it may become necessary to recognize two distinct subspecies. In that event the name peripherica should be adopted for the multi- costata form, because it better conforms to Ancey's description and Ancey himself recognized the identity of these two, and did not recognize their identity with any of the other named forms. Then the forms from stations 29, 33, 34 and 37 may be called 0. peripherica binneyi (Hemph.), with albofasciata as a color form. Living specimens from these stations have been retained for breeding experiments. Sta. 37, about five miles across the valley due west of Sta. 36, a mile or so southwest of Clarkston, in a ravine in the east slope of the same narrow mountain range that the river cuts through at stations 29 to 34, and probably not more than three miles northwest of 29, under low bushes. The binneyi and albofasciata forms, showing the usual intergradations. From the topographic and biologic conditions observed at a distance, it is not unlikely that this colony extends with a few narrow interruptions, to a point on the river bank just opposite Sta. 29. Sta. 36, west slope of a small, rounded, barren-looking, isolated, 334 PROCEEDINGS OF THE ACADEMY OF [May, calcareous mountain northeast of Newton, due east of Sta. 37, under the shrub Kunzia tridentata and weeds. We found here, on a very unpromising slope, in considerable abundance, an Oreohelix which appears to be identical with the smooth form of peripherica from Sta. 26, in North Ogden Canyon, but the specimens average somewhat smaller at Sta. 36 and more in keeping in this respect with the other peripherica stations. Oreohelix rugosa (Hemph.). Patula sirigosa var. rugosa Hemphill, Xaut., IV, 16-17, 1890. Binney's 4th Suppl. to 5th Vol. Terr. Moll. U. S., p. 174, 1892. Sta. 3, a little north of west from Clarkston, on the east slope of the same mountain range as Sta. 37 and not more than two or three miles distant, probably about one-third of the way up the mountain, under scrub oak and sage brush. A comparison of this material with 0. rugosa in Clapp's Hemphill collection shows them to be identical. The shells remind one of 0. hendersoni Pilsbry, or rather of the subspecies dakani Henderson, but Dr. Pilsbry's anatomical examination disproves its relationship to hendersoni. It must be remembered, however, that the connection between hendersoni and dakani is hypothetical, and rugosa may prove to be a prior name for the latter. The anatomy indicates a closer relationship to cooperi than to strigosa or depressa, but the shell characters do not appear to grade it into any of those forms, so it is for the present assigned to specific rank. The specimens vary greatly in altitude, as is so frequently the case in this genus. Pisidium huachucanum Pils. and Ferr. Found in a spring at Clarkston, Utah, associated with the next species. Both identified by Dr. Sterki. Paludestrina longinqua (Gould). In a spring at Clarkston, Utah. On the bank of Bear River, due west of Cache Junction, we found a single dead shell of Planorbis trivolvis. At Sta. 35, a brook northeast of Newton, we found a Physa rather plentiful, which was tentatively identified by Mr. Bryant Walker as P. distinguenda Tryon (?), but Dr. Pilsbry says it "agrees very exactly with the type of Physa cooperi." The Trenton District. Trenton, Utah, lies a few miles to the north of Newton and Cache Junction. 1916. J NATURAL SCIENCES OF PHILADELPHIA. 335 Oreohelix peripherioa (Ancey). Sta. 4, "The (lift's, " one mile south of Trenton, on a small, isolated mountain similar to Sta. 36. The smooth form of this species, like that found at stations 26 (North Ogden) and 36 (Newton), was found here. A few show the strong ribbing of the form binneyi, hut the ribs are not so prominent as in the form multicostata. A fiir had recently destroyed the brush and leaves so live specimens were scarce, but dead shells were abundant. Two abnormal speci- mens are represented on PI. XV, fig. 4. Sphaerium pilsbryanum Sterki. A few dead shells found in an irrigating ditch near Trenton, from which the water had been withdrawn for some time. The species was described from Bear Lake as a fossil or subfossil. Dr. Sterki writes that he has one fresh specimen from Utah Lake. The Logan District. Binney recorded Thysanophora ingersoUi (Bland) under the generic name Micwphysa, from Logan Canyon, collected by Hemphill (2nd Suppl. Terr. Moll., p. 35). It is probably the same form that Ancey, 1887, described from the same canyon as M. ingersoUi con- vexior (Conch. Exch.. II. 64). We did not visit this canyon. Oreohelix strigosa depressa (Ckll.). Sta. 41, first gulch south of Logan Canyon, east of Logan, Utah, in the edges of Paleozoic limestone talus. A small form of this subspecies, running about 18.5 mm. in diameter, mostly strongly banded, a few plain, not abundant, conditions evidently rather unfavorable. A few examples strongly resemble 0. "van. albida" (Hemph.), the type locality of which is "near Logan." Oreohelix haydeni hybrida (Hemph.). PI. XV, fig. i. Patvla slrigosa var. hybrida Hemphill, Xaut., IV, 17, 1S90. Sta. 42, not far within the mouth of the next gulch south of Sta. 41, under mountain maple and other shrubbery, herbs and rocks. The snails were found in fair abundance, a few with color bands, sculpture almost exactly like that of 0. h. gabbiana from stations 14 and 15, but the keel is much less pronounced and often almost wanting on the last whorl. This is doubtless the form that Hemphill first re- corded as "the variety with microscopic ribs, beginning of haydeni, among stones at the head of a gulch high on the mountains" (Binney's 2nd Suppl. Terr. Moll., p. 31), possibly the same gulch from which we collected it. Later, in describing and naming the subspecies, he- explained that it "is the beginning of the forms of strigosa that 336 PROCEEDINGS OF THE ACADEMY OF [May, finally develop the revolving lines into prominent ribs as seen on the surface of var. haydeni Gabb. " The Franklin District. Franklin is situated in Idaho, a mile or two north of the northern line of Utah, and Sta. 38 is in Idaho, but stations 39 and 40 are a mile and a half or two miles south of the line, in Utah. Oreohelix strigosa fragilis (Hemphill). PL XVI, fig. 1. Patula strigosa var. fragilis Hemphill, Naut., IV, 17-18, 1890. Binney's 4th Suppl. Terr. Moll., pp. 174-175, 1892. Sta. 38, a small, isolated, barren-looking mountain about a mile west of Franklin, Idaho, in the edges of Paleozoic limestone slides surrounded by sage brush. The specimens from this station are small (few exceeding 17 mm. in diameter), much depressed, not quite so fragile as from the next station, and with a wider umbilicus, as would be expected from the depressed form. The noticeably translucent shell and general appearance, however, connects them with this subspecies, rather than with typical depressa. From this station we have also 1 Vallonia cyclophorella Ancey, 1 Pupilla blandi (Morse) and 2 Succinea avara Say. Sta. 39, Prater Gulch, south of High Creek Canyon, Utah, about six miles southeast of Franklin, Idaho, nearly east of the railroad station of Webster, Utah, in quartzite talus. Rare in several slides visited, very abundant in one. The specimens are typical, but rather larger than most of those in Clapp's Hemphill collection, averaging about 20 mm. in diameter, altitude variable in its propor- tion to transverse diameter, but nearly all higher than the average from Sta. 38. This subspecies is closely allied to depressa, but differs slightly in anatomy, in the translucency and fragility of the shell, and in the narrowing of the umbilicus by the reflected base of the columella. Near Franklin, on red sandstone, is given as the type locality. One might be led to suspect that the fragility of shell is due to lack of lime, from the fact that Hemphill's material came from sandstone and our No. 39 from quartzite, but the snails from Sta. 38, in a limestone habitat, are also fragile, though to a less degree, while depressa from quartzite slides are not fragile. The Sta. 39 shells are so fragile that many of them were broken in carrying them in the bags until we found time to clean them, a thing which did not happen with any other Oreohelices we collected, and they were not subjected to as hard usage as some. Indeed, it was the fact that they broke so easily that attracted our attention in the 1916.] NATURAL SCIENCES OF PHILADELPHIA. 337 field to the probability that we had Hemphill's fragilis, which neither of us had seen before. At this station Vitrina alaskana Dall was noted, but not taken. Oreohelix haydeni corrugata new subspecies. PI. XVII, fig. l. Shell rather globose; spire elevated, one or two examples tabulate; whorls 5 to oh, ample, convex, last one scarcely carinated at the periphery on elevated specimens; spiral sculpture strong, closely resembling that of typical haydeni and the subspecies betheli, con- sisting of an average of about 13 strong, sharp ridges (in a few exam- ples scarcely stronger than the riblets), the interspaces much broader and occupied by from 3 to 6 spiral riblets or threads; numerous crowded, irregular, transverse riblets and growth lines roughen the shell and give to the spiral ridges and riblets a knobbed appearance under a lens; color pinkish-white to white, first 2 or 3 whorls dark horn-color; altitude of type in Univ. Colo. Museum, 14 mm.; greater diameter, 18 mm.; lesser diameter 15.7 mm.; cotype in collection of L. E. Daniels 13 mm.; greater diameter, 18.5 mm.; lesser diameter, 16 mm.; cotype in Mus. Acad. Nat. Sci. Phila., alt. 14, diam. 19.7 mm.; umbilicus deep and very narrow, almost cylindrical, exhibiting whorls to the apex. The shell is more globose, the whorls of greater caliber and the umbilicus much narrower than in typical haydeni, and typical betheli is even more depressed and widely umbilicated For purposes of comparison we republish Gabb's figure of haydeni (PI. XVIII, fig. 3), and original figures of betheli (PI. XVIII, fig. 1) and its variety alta (PI. XVIII, fig. 2), neither of which have been hitherto figured. Binney's figures of haydeni do not appear to be typical. Type locality, Sta. 40, a small mountain of Paleozoic limestone nearly isolated from the main chain, south of west from Sta. 39, and southeast of Webster, Utah, under the shrub Kunzia tridentata and coarse-leafed herbaceous plants, and in one place in a small rock slide. Abundant. This subspecies forms another exception to Hemphill's observation concerning the geographic dividing line between the transversely-ribbed and longitudinally- ribbed forms (Binney's 2nd Suppl. Terr. Moll., p. 31, 1886). Hemphill recorded haydeni from the Oquirrh Mountains and also from near Ogden, but a large series in Clapp's Hemphill col- lection labelled partly oquirrhcnsix, partly haydeni and partly hemp- hill i, all from "near Salt Lake," does not disclose any difference between them, and should probably all be called oquirrhensis, except perhaps two much more elevated examples which may be from a different localitv. 338 proceedings of the academy of [may, The McCammon District. McCammon, Idaho, is about fifty miles northwest of Franklin. Oreohelix cooperi (W. G. B.). Sta. 1, one mile north of McCammon, Idaho, on the north side of the railroad. Several additional faint, narrow color bands below periphery. Oreohelix strigosa depressa (Ckll.). Sta. 2, about six miles up Harkness Canyon, directly east of McCammon, below the first limestone ledge, under leaves and small stones. This form is allied to depressa by its anatomy, but is on the average much less depressed, the whorls more convex, and few are strongly banded, though most of them show some traces of color bands, and a number exhibit several faint, narrow bands below, such as are so common in 0. cooperi, but not so usual in depressa. Oreohelix tenuistriata new species. PI. XV, figs. 5, 6. Shell small, rather depressed; whorls about 4^, convex, carinated; transverse sculpture consists of numerous, crowded, sharp, wavy lines, presenting a beautiful appearance under a lens, crossed by a number of indistinct, raised, spiral lines; umbilicus open, exhibiting all of the whorls; color of live shell unknown, but probably a dirty white; exact measurements of adult unknown, but diameter about 9 mm., altitude about 5 or 5.5 mm. The paratype in Coll. Acad. Nat. Sci. Phila. measures, alt. 5.1, diam. 8.5 mm. In general appear- ance and sculpture it closely resembles 0. carinifera Pils., but the transverse sculpture is sharper than in the two specimens of that species we have been able to examine. Also the second embryonic whorl is sharply striate and convex, while in carinifera and hemphilli it is smooth and convex and in yavapai it is smooth and flatter. Type locality, Sta. lh, a canyon between McCammon and Hot Lava Springs, Idaho, about two miles southwest of the latter place. Only three examples were found, all more or less broken. One is in The Academy of Natural Sciences of Philadelphia, one in the University of Colorado, and the type in the collection of Mr. Daniels. These specimens were all submitted to Dr. Pilsbry, who says they represent an undescribed species and belong to the hemphilli and carinifera group. With more and better material this may prove to be a subspecies of one or the other, but it does not at present seem probable. With it were found, sparingly, Vallpnia gracilicosta Reinh., Euconulus fulvus Mull, and Vitrina alaskana Dall. PROC. ACAD. NAT. SCI. PH1LA. 19 16. PLATE XV. HENDERSON and DANIELS: MOLLUSCA OF UTAH AND IDAHO. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XVI. HENDERSON AND DANIELS: MOLLUSC A OF UTAH AND IDAHO. PROC. ACAD. NAT. SCI. PHILA. 191G. PLATE XVII. ^ • ' * t -• 7* Ih HENDERSON AND DANIELS: MOLLUSCA OF UTAH AND IDAHO. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XVIII. HENDERSON AND DANIELS: MOLLUSCA OF UTAH AND IDAHO. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 339 Pisidium huachucanum Pits, and Ferr. In a spring near Port Neuf River, north of McCammon, Idaho. Identified by Dr. Sterki. Explanation of Plates XV, XVI, XVII, XVIII. Plate XV. — Fig. 1. — Oreohelix peripherica, -ix examples from Sta. 26, North Ogden Canyon, Utah. Fig. 2. — Oreohelix peripherica, six examples from Sta. o(), near Cache Junc- tion. Utah. Fig. 3.— Oreohelix peripherica, nine examples from Sta. 31. near Cache Junction, Utah. Fig. 4. — Oreohelix peripherica, two abnormal specimens from Sta. 4, near Trenton, Utah. Fig. 5. — Oreohelix tenuistriata n. sp., 3 views of type specimen from near Hot Lava Springs, Idaho. In collection of L. E. Daniels. Fig. 6. — Oreohelix tenuistriata n. sp., 3 views of cotype from near Hot Lava Springs, Idaho. In Univ. Colo. Museum. Fig. 7. — Oreohelix hemphilli eurekensis n. subsp., 3 views of type specimen from Eureka, Utah, in Univ. Colo. Museum. Fig. 8. — Oreohelix hemphilli eurekensis n. subsp., 3 views of co-type from Eureka, Utah. In Acad. Nat. Sci. Phila. Plate XVI. — Fig. 1. — Oreohelix strigosa fragilis, six examples from Sta. 39, east of Webster, Utah. Fig. 2. — Oreohelix strigosa buttoni, four examples from Sta. 16, Taylor Canyon, near Ogden. Utah. Fig. 3. — Oreohelix haydeni gabbiana, five examples from Sta. 15, Oquirrh Mts., Utah. Fig. 4. — Oreohelix haydeni hybrida, five examples from Sta. 42, near Logan, Utah. Plate XVII. — Fig. 1. — Oreohelix haydeni corrugata n. subsp. Three views of four specimens from type lot, Sta. 40, southeast of Webster, Utah. Fig. 2. — Oreohelix peripherica Ancey. Three views of four specimens from Sta. 29, near Cache June, Utah. Plate XVIII. — Fig. 1. — Oreohelix haydeni betheli, six examples from type locality, north of river. Glenwood Springs, Colo. Fig. 2. — Oreohelix haydeni betheli var. alia, eight examples from type locality, south of river, Glenwood Springs, Colo. Fig. 3. — Oreohelix haydi ni, Gabb's original figure from Amer. Journ. Conch. 340 PROCEEDINGS OF THE ACADEMY OF [May, NOTES ON THE ANATOMY OF OREOHELIX, WITH A CATALOGUE OF THE SPECIES. BY HENRY A. PILSBRY. The present study is based chiefly upon material collected by Messrs. Junius Henderson and L. E. Daniels in Utah and southern Idaho.1 Its object is to determine the characters of the reproductive organs and teeth of the species of this area, both as an aid in the discrimination of the species, and to afford a basis for comparison in further work on the genus. The new catalogue of the species and minor forms of Oreohelix appended, embodies the results of study in the museum and field from time to time during the past ten or fifteen years.2 The genus Oreohelix is one of the most difficult groups of land snails within our boundaries by reason of the multiplicity of forms, and the strange parallelism of shell characters sometimes existing between species or races not directly related. This has led to erro- neous identifications, with consequent errors in the data of geographic distribution. The shell seems to be especially plastic ; not only are there many local races of various grades of differentiation, but in any colony of some of the species one finds a wide range of variation in the features usually depended on for specific discrimination, such as absolute size, height of the spire, width of the umbilicus relative to the diame- ter, and development of the sculpture. Sometimes colored and white individuals exist in the same colony. If the banded pattern is primitive in the strigosa and cooperi groups, as seems highly proba- ble, then it appears that bandless or white mutations have arisen independently in many colonies, where they sometimes exist with the earlier pattern, apparently in hybrid populations. Eighty-six names have been proposed for forms of all grades; many of these are quite insufficiently defined, and no doubt part 1 For data relating to the localities and shells collected reference must be made to their paper "Hunting Mollusca in Utah and Idaho." A few species collected by Mr. jas. H. Ferriss and the author are also considered. 2 The writer has personally collected ten of the twenty-four species known. All of the species and subspecies are contained in the collection of the Academy except the following: 0. bruneri Ancey, 0. cooperi stantoni Dall, and 0. strigosa imilaris Dawson. 191().] NATURAL SCIENCES OF PHILADELPHIA. 341 of them are superfluous, either because they are synonymous with other nanus, or because they denote variations not of racial value. In many cases, further collections are requisite, as the small, assorted series of the earlier collectors give no adequate idea of the association of forms in the colonies. Moreover, the location of colonies has often been carelessly recorded, entailing much strenuous field work on the investigator of to-day, work which could have been saved by carefully noting the locations of type localities. Distribution of Oreohelix. The genus is almost confined to the western mountain region of the United States, but there is one species in southern Assiniboia and one near the southern boundary of Alberta. Formerly one species extended eastward to eastern Iowa. Southward the genus practically reaches the Mexican boundary, in the Big Hachet moun- tains of Xew Mexico and the Huachucas of Arizona; and it will probably be found below the boundary. An outlying species on Catalina Island, California, is widely remote from its kindred, among alien associates. A northern and a southern area of speciation may be dis- tinguished. The southern group occupies the southern half of New Mexico, Arizona south of the Colorado River, and Catalina Island, California. It comprises all of the recent species of the subgenus Radiocentrum, and the species of Oreohelix proper which have swollen penes. Species as follows: 0. concentrata. (Radiocentrum.) 0. metcalfei. 0. avalo?iensis. 0. pilsbryi. 0. chiricahuana. 0. yavapai. 0. clap pi. 0. barbata. 0. ferrissi. 0. socori'oejisis. 0. hachetana. 0. cooperi. Several of these species have one or more subspecies. 0. cooperi occurs only at considerable elevations, and in forms differing some- what from northern specimens. 0. yavapai has been found also in northwestern Wyoming. It is one of the widely distributed species. The other species are special to the southern area. In the Florida and Dragoon mountains a few imperfect and very old specimens have been recorded doubtfully as 0. strigosa; but it seems more likely that they belong to the group with swollen penes, some of which resemble 0. strigosa. The northern group occupies Arizona north of the Colorado and 342 PROCEEDINGS OF THE ACADEMY OF [May, northern New Mexico, north to British America, and in its greatest amplitude from the Mississippi Eiver (pleistocene) to eastern Wash- ington. The most widely spread species is 0. cooperi, with 0. strigosa depressa next. 0. haydeni also is spread over a considerable though much smaller area. Most of the other species and races are rela- tively local in distribution, and many are known from but one or a few contiguous colonies. Oreohelix cooperi still occurs from the Black Hills to Montana and Idaho, and from Assiniboia to the southern third of New Mexico and Arizona. Its range was formerly wider, as it is not uncommon in the loess of eastern Iowa. Its presence there indicates a drier and cooler summer climate than that of eastern Iowa to-day. Where I have collected 0. cooperi in the mountain states it is a shell of the " aspen zone." Oreohelix is rarely if ever found in abundance except where the country rock is limestone. Some species, in areas largely blanketed by later igneous rock, seem to be wholly restricted to the limestone outcrops. They live on the surface, in dry weather finding refuge under superficial stones, leaves or sticks. Except 0. barbdta in the Chiricahua mountains, I do not remember ever finding Oreohelix below the surface layer of stones or rocks. Reproductive Organs of Oreohelix. The genitalia have a general resemblance to the same organs in Ashmunella and Sonorella, but there are some differences. There is never a flagellum, though the epiphallus is well developed. The penis-papilla is obsolete or wanting. The penis consists of a lower segment which is longitudinally ribbed within, and an upper segment with thinner walls which are densely papillose within, and enclose a larger cavity. The internally ribbed part is very short in Radio- centrum, but from about a third to over half the total length in Oreohelix proper. The distal end is truncate or quite shortly bicornute. In the figures, the organs are shown in nearly their natural positions, except that in some cases the folds of the penis are slightly opened out, to bring the epiphallus into full view. The specific characters are largely a matter of measurements of the epiphallus and penis and its parts. These measurements are taken with dividers after pulling the organs straight, but without stretching. Thus PI. 20, fig. la, and PI. 22, fig. la show the penes of two species pinned out for measuring, after drawing figures in the natural positions. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 343 All figures were drawn with an Abbe camera lucida. In these Proceedings for 1905, p. 271, a grouping of the species of Oreohelix according to the characters of the genitalia was tenta- tively advanced. The examination of many more species and local races in the main confirms the arrangement then proposed. By the genitalia the species group as follows. 1. Epiphallus about as long as the penis, the retractor muscle inserted upon it; internally plicate part of the penis very short; animal oviparous, etc. Subgenus Radiocentrum. 2. Epiphallus much shorter than the penis, the retractor muscle inserted upon both at their junction (except in 0. barbatd); internally plicate part of the penis \ to over \ of its length; viviparous species. Subgenus Oreohelix. a. Penis long, the distal part about equal in diameter to the lower part, though usually collapsing on account of the thinner walls. 0. strigosa, peripherica, hendersoni, elrodi, haydeni and their varieties. Also 0. cooperi, which is somewhat intermediate between groups a and b, being a generalized species in genitalia. b. Penis short, the basal part decidedly more swollen than the distal, 0. yavapai, concentrica, metcalfei, pilsbryi, barbata, and their varieties. The division of Oreohelix into "transversely ribbed," "smooth or striate," and "longitudinally ribbed" groups by Hemphill and Binney is a division of convenience in the identification of specimens, but it has no relation to the affinities of the species. Teeth of Oreohelix. In Oreohelix there are two types of teeth, as W. G. Binney first pointed out. In one group the central and inner lateral teeth have no side-cusps or cutting points. Here belong: 0. strigosa (Gld.). Binnev, T. M. vol. V, PI. IV, fig. h.3 0. cooperi (W. G. B.). Binney, T. M. vol. V, PI. IV, fig. g, and several examined by myself. 0. haydeni (Gabb). Binney, T. M. vol. V, PI. XVI, fig. b. Also 0. h. betheli and 0. h. corrugata examined by myself. 0. peripherica (Anc). Binney, T. M. vol. V, PI. XVI, fig. a (var. newcombi). Also numerous radulse of several forms examined by me, from Henderson and Daniel's Stations 29, 30, 33, 36. 3 Just what race of strigosa Binney had remains in doubt. In the same volume he described and figured the genitalia of a Salmon River strigosa, which would presumably be 0. s. jugalis, but perhaps O. s. subcarinata. He gives the formula 50-1-50 for a transverse row of teeth. As all the other species of Oreohelix exam- ined by Binney and the writer have between 20-1-20 and 33-1-33 teeth, this count is remarkable, and if confirmed would certainly indicate a species distinct, from any other of which the dentition is known. 344 PROCEEDINGS OF THE ACADEMY OF [May, 0. strigosa depressa (Ckll.). Pilsbry, Proc. A. N. S. Phila. 1905 PL XXII, figs. 1-3 (Pecos, N. M.); also from Colorado Springs, near McCammon, Idaho, and Ogden Canyon, Utah. 0. rugosa (Hemph.). See fig. la. Formula 19, 13, 1, 13, 19. 0. metcalfei (Ckll.). Formula 17, 11, 1, 11, 17. 0. concentrata (Dall). Pilsbry, Proc. A. N. S. Phila., 1905, p. 276 (Form huachucana). 0. yavapai (Pils.). Pilsbry, Proc. A. N. S. Phila., 1905, PI. XXII, fig. 7. Fig. 1. — Central and two inner lateral teeth of (a) Oreohelix rugosa, and (b) 0. hendersoni. In the second group the central and all lateral and marginal teeth have sicle-cusps. Of this kind are : O. idahoensis (Newc). Binney, T. M. vol. V, PI. IV, fig. i. 0. hemphilli (Newc.).4 Binney, T. M. vol. V, PL IV, fig. j. 0. barbata Pils., Pilsbry, Proc. A. N. S. Phila., 1905, PL XXII, fig. 6. O. chiricahuana Pils., Pilsbrv, Proc. A. N. S. Phila., 1905, PL XXII, figs. 10, 11. 0. clappi Ferriss, Pilsbry, Proc. A. N. S. Phila., 1905, PL XXII, fig. 4. In O. clappi the cusps and cutting points on the central teeth are very small. In O. hendersoni (fig. 16) they are small and partly united with the lateral cutting edges of the middle cusp. This species is transi- tional to the form of teeth found in O. cooperi, O. haydeni and others. There is therefore no hard and fast line of demarcation between the two groups, although nearly all of the species examined are seen at once to belong to one or the other, and the form of the teeth is there- fore a useful specific character. Nearly all of the radulse examined have 29 to 33 teeth on each side of the central tooth. A few have not so many, 0. yavapai having 26, O. barbata 23, and 0. hemphilli, according to Binney, 20. 4 Binney reported O. hemphilli from "Manitou, Williams Canyon, Colorado." The shell from this place needs comparison with the type of hemphilli. Whether his figure of the teeth was from the Nevada or the Colorado form is not known. Fig. 157, Man. Amer. Land Shells, p. 168, is not very characteristic, and if hemp- hilli, it is an immature individual. The tvpe of O. hemphilli is No. 23,060 A. N. S. P. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 345 The count of teeth is rather small for a Helicid genus. Mr. Binney's count for "0. strigosa," 50-1-50, is so detached from other known species that it needs confirmation. Oreohelix strigosa (Gld.). The anatomy of typical 0. strigosa is unknown, since we have yet to rediscover the typical form. Hemphill's var. parma from Spokane Falls is near the original strigosa, but it is larger and more solid. Further west, at Blue Lake in the Grand Coulee, there is a small, thin race, closely resembling jugalis Hemph. Nothing is known of the soft anatomy of any of the subspecies or races of Washington, central and "northern Idaho and Montana. Oreohelix strigosa depressa (CklU. PI. 19, figs. 1, 2, 3, 4, 0, 7; pi. 120, fig. 8. (a) Specimens from Manitou Canyon, near Colorado Springs, are taken to be typical depressa (fig. 1). The penis is long, from over three-fourths to more than the diameter of the shell, the internally costate portion is not swollen, and is less than half the entire length — usually about one-third. It has 5 or 6 ribs inside. The distal portion collapses along three lines, so that its section is trefoil shaped. This is due to three bands where the wall is slightly thicker. It lies coiled in the body, usually showing two principal bends. The general appearance in different individuals is shown in pi. 19, figures 1, 2 (also pi. 19, fig. 5, 0. s. fragilis.) The form cornea (pi. 19, fig. 3) is identical with depressa anatomically. (6) In another series of specimens dissected the distal part of the penis collapses along two instead of three sides, so that its section becomes flattened instead of triangular. It is also less coiled or twisted than in typical depressa. This form of penis is shown in pi. 19, figs. 4 and 7, and pi. 20, fig. 8. The last five measurements in the table on page 346 belong to these. While the trefoil and the flat forms are almost always readily distinguishable, yet in a few specimens of the fiat type I have opened, there is some indica- tion of a third ridge in part of the length (Stations 43, 46, figs. 3 and 6 of plate 19). The flat type is probably more primitive than the trefoil, since it is common to this form of strigosa, peripherica and haydeni. O. s. depressa form tooelensis H. and D. (pi. 21, fig. 5), from Station 10, about 6 miles from Tooele, Utah, agrees with many specimens of depressa in genitalia. The distal part of the penis is flattened. The radula of O. s. depressa from Colorado Springs has 16, 17, 1, 17, 16 teeth, the central and 5 or 6 inner laterals unicuspid. 346 PROCEEDINGS OF THE ACADEMY OF [May, Oreohelix strigosa fragilis (Hemph.). PI. 19, fig. 5. Genitalia as in 0. s. depressa, the distal portion of the penis col- lapsing into a trefoil shape in the individual dissected (Station 38). Length of penis 18 mm.; of internally costate part 5 mm.; epiph- allus 4; penial retractor 6 mm.; diameter of the shell about 19 mm. Oreohelix strigosa buttoni (Hemph.). PI. 21, fig. 6. Genitalia as in form tooelensis, 0. s. depressa from Provo, and others, the penis collapsing flat. The lower part has 5 ribs within. Length of penis 25 mm., of internally costate portion 10, of epiphallus 7 mm., penial retractor 15 mm.; vagina 6.7 mm. The specimens came from Station 16, Taylor Canyon, near Ogden, Utah. Measurements, in mm., of the genitalia of Oreohelix strigosa depressa. <« *3 •Ji f etrac- cle. C+H 03 o o . u- -c += 3 * Locality. 0 tho ate en is ; = *2 ° " '£ sn a o . th o mat due xim nete hell. CT> ,—1 MS 2Pt5 ~ bC.£< SP'3 u fcX sjd MSt £ 3 x e S u g^ 1— 1 C o r, C 03 3* C r> C l^a-s E Colorado Springs, Manitou Canyon 18.5 6.5 7.5 11 8 23 Fig. 1 Near Salt Lake City, Sta. 43 24 8 6 11 6 25 L'ig-13 Emigration Canyon, Sta. 46 26.5 11 7 7.5 6.5 25 Fig. 6 Near McCammon, Idaho, Sta. 2 23.5 7 6.3 10 5.5 27 Fig. 2 28 8.5 7 10.5 21.5 Ogden Canyon, Utah, Sta. 22 27.5 9 7 15 6 26 Fig. 7 Near Logan, Utah, Sta. 41 19.5 5.8 5 9 22 19 Fig. 4 Form tooelensis, Station 10 17 7 5 7.5 3.6 22 PL 21 Fig. 5 Oquirrh Mts., Sta- tion 13 23 8 7 13.5 6.6 22 25 PL 21 Fig. 7 Provo, U^tah, Station 44 20.5 8.5 7.5 7 6.5 23 PL 20 Fig. 8 Oreohelix hendersoni Pils. PI. 20, fig. 7. The length of the penis is three-fourths of the diameter of the shell. Its internally costate segment is one-third the total length, and the distal papillose portion is somewhat flattened. Length of the epiphallus is contained 2f times in that of the penis. The penial retractor muscle is shorter than usual in P. strigosa depressa. l'.lltil NATURAL SCIENCES OF PHILADELPHIA. 347 The lower third of the spermatheca duct is Large, then abruptly contracting. There is a general similarity with the genitalia of 0. s. depressa. Measurements in mm. follow. Length of penis 12, of its costate lower portion 4; epiphallus 4.5; penial retractor 4; vagina 4; spermatheca and duct 10.5; diam. of shell 16 mm. The three areas of the radula appear distinct, in a slightly enlarged view, the rows of marginal teeth being oblique. In most Oreohelices the areas are not well marked. The central tooth and laterals have rudimentary side cusps. Formula 16, 12, 1, 12, 16. Text fig. 16. By the forms of the individual teeth and the more distinct differen- tiation of areas in the radula, this species differs from the strigosa series. Oreohelix haydeni (Gabb). PI. 21, figs. 1. 2, 4, 8. 0. haydeni does not differ from 0. strigosa depressa in any important or diagnostic characters of the genitalia or dentition, but the features of the shell seem quite sufficient to give it specific rank. The typical form, from Weber Canyon in the Wasatch Range, has not been collected alive so far as I know. The forms examined agree pretty closely in soft anatomy. The internally costate part of the penis is about one-third of the total length. The distal portion collapses flat. The penial retractor is decidedly shorter in subsp. corrugata and hybrida than in subsp. betheli and gabbiana. This is probably not a character of much importance. The retractor is sometimes continued in the lung floor for some distance, as in pi. 21, figs. 2 and 8. Only the free part is measured in the table. In hybrida the penis is more twisted than in the other forms, at least in the individual dissected. In all the forms, the distal part of the penis collapses more or less flat. 0. h. betheli has four unequal ribs in the lower part. Length of penis. rt X sib-g a tc.3< i o 03 . O Sh oq o . — .5 6 — .E -L - . zL ti ~ U ~ z: ri - D.-8 - > Length of spermatheca and duct. Approximate diameter Of shell. Plate 21. 0. h. betheli ( >. h. gabbiana 0. h. corrugata 0. h. hybrida 19 Hi lti..-) Hi 6 18 + (i 11 5 7 4 5 7.5 21 5.5 5 17 4 15 5 Fig. 2 5.5 Fig. 1 5 Fig. 4 5 Fig. 8 24 348 PROCEEDINGS OF THE ACADEMY OF [May, In 0. h. betheli and 0. h. corrugata the central and inner lateral teeth are unicuspid, but there are narrow, cutting edges overhanging from the central cusps, in place of side cusps. Oreohelix haydeni mixta n. subsp. The shell is whitish with the early whorls clay color (the last whorl sometimes having two narrow brown bands, the upper one ascending the spire). Sculpture often equal, rather fine, deeply cut growth- wrinkles, cut by spiral engraved lines, unequally developed, and on the base often grouped so as to leave spiral bands of long granules at intervals. Periphery angular or subangular in front, becoming rounded on the rest of the last whorl. Embryonic shell having irregular radial ripples, and the usual very fine spiral striation; on the last whorl some coarse spirals ; peripheral carina strongly pinched out. Height 18.3, diam. 12 mm.; umbilicus 3.6 mm. The genitalia (pi. 21, fig. 3) resemble the organs of 0. haydeni in proportions, the internally ribbed part of the penis being less than half of the total length, but thicker than in haydeni, perhaps an individual feature. The distal part has a somewhat trefoil section. It differs from 0. cooperi by the longer penis relative to the diameter of the shell, its length being about equal to the diameter in this form, but decidedly less in all of the cooperi I have measured. The inter- nally costate part is relatively shorter than in cooperi. Glenwood Springs, Colorado, on the bluff above the Hotel Colorado, among oak leaves and debris on a sandstone and shale ledge above station of 0. h. betheli. Type No. 94,058 A. N. S. P. (from No. 447 of Prof. Ellsworth Bethel, 1907). Another lot from Mr. Bethel, No. 94,796, consists of individuals like the above lot, with others having two narrow spiral lines in the usual cooperi positions. One of this lot (whether banded or plain not known) was dissected, pi. 22, fig. 5. It agrees with the type in proportions of the penis, but the penial retractor and the vagina are shorter. Measurements of the genitalia in mm. follow. Mus. No. Length of penis. Length of internally ribbed part of penis. Length of epiphal- lus. Length of penial retractor. Length of Diameter vagina. of shell. 94,058... 94,796.... 18 17.5 6.8 7.7 6.3 6 IS 8 9 6 18.3 about 18 1916.] NATURAL SCIENCES OF PHILADELPHIA. 349 This is the form which was at one time identified as 0. haydeni gabbiana. It resembles 0. h. hybrida very closely, but the embryonic stage differs. The last embryonic whorl is not so convex in mixta, and its major spirals are more distinct and the radial ripples are more irregular. The carina is decidedly more prominent, and the whorl as a whole is distinctly more depressed. It is likely that hybrida and mixta are independent forms of the haydeni stock, or perhaps separated relics of a pro-haydeni race. Some specimens have much the appearance of cooperi, but the genitalia show that there is no real connection. There is large individual variation in the height of the spire. The embryonic shell of 0. h. gabbiana has stronger spirals both above and below near the end of the last embryonic whorl; its periphery is less pinched out, and it is less depressed. The adult gabbiana is usually more strongly angular or keeled. Oreohelix peripherica (Ancey). PI. 20, figs, l to 6. In genitalia this species does not differ materially from 0. strigosa depressa (b) and 0. haydeni. The internally costate part of the penis is less than half of the total length, usually slightly over a third. The internally papillose distal portion usually collapses flat, but one specimen from Station 30 and one from 36 there are weak indica- tions of a third ridge. The cylindric lower part of the penis has 5 or 6 longitudinal ribs within. Many specimens were opened, from various localities, and including nearly smooth, fine-ribbed and coarse-ribbed, white and banded individuals. Except in size, there is very little variation. Measurements, in mm., of the genitalia of Oreohelix peripherica. Locality. Length of penis. Length of costate part of penis. Length of epiphallus. Length of penial retractor. Length of vagina. Length of spermatheca and duct. Approximate diameter of shell. Plate 20. Station 26 18.5 16 18.5 14 18 18 21 6 6 7.2 6.5 8 6.5 7.5 4 5.5 6 4 4 4.5 5 "8.5 o.o 11.5 10 13.5 5.5 4.5 6.6 6 6.5 18"" 18 21 23.5 18-20 18-25 195-20 20 20 Fig. 4 Station 26 ... Station 29... Fig. 3 Fig. 6 Fig. 2 Fig. 1 Fig. 5 Station 30. Station 33 (Whitci Station 33 (Banded) Station 36 350 PROCEEDINGS OF THE ACADEMY OF [May, The central and inner lateral teeth have no side cusps. There are about 12 lateral teeth on each side (Station 30). In an individual from Station 36 there are 17, 13, 1, 13, 17 teeth. The transition from lateral to marginal teeth is very gradual in this species, so that the exact number of laterals is somewhat uncertain. Oreohelix rugosa (Hemphill). PL 22, figs. 7, 7a. The penis is about two-thirds the diameter of the shell, therefore shorter than in any form of 0. s. depressa examined. Its internally costate lower portion is relatively decidedly longer than in 0. s. depressa, being over half the total length, agreeing with that of 0. cooperi. Inside the lower part has 5 or 6 fleshy ribs, smooth, as usual, and the upper part has about the same number, but they are lower, and both ribs and intervals are papillose. The duct of the spermatheca is longer than in 0. s. depressa. Two individuals measure : Length of penis. Length of costate part of penis. Length of epiphallus Length of penial retractor. Length of vagina. Length of sperma- theca and duct. Diameter of shell. 16 16 11 10 6 6.2 7.6 6 29 24.5 There are about 13 lateral teeth on each side, the inner 9 to 11 without side cusps. The transition to marginals is very gradual. Oreohelix cooperi (W. G. B.). PI. 22, figs. 1, 2, 3, 4. Specimens from Wyoming, Utah, Colorado and New Mexico have been dissected. All agree in having the internally costate part of the penis longer than the papillose part, which at once differ- entiates the species from 0. strigosa and 0. peripherica, in which the costate part is much shorter than the papillose part. The penial retractor is short, less than half the length of the penis in the smaller specimens, but about two-thirds the length of penis in the large forms from Yellowstone Park and New Mexico. The median part of the penis is often somewhat swollen, but in other examples this is not noticeable. The penis has usually four main fleshy ridges in the lower part as in specimens from McCammon, Idaho (fig. 2), and the Black Range of New Mexico, or there may be about 6 unequal ridges (fig. 1, Yellowstone Park, No. 96,973), one of them continuing upwards 191(3.1 NATURAL SCIENCES OF PHILADELPHIA. 351 further than the others. In the Black Range form the ribbed portion projects upwards into the cavity of the papillose part. Measurements in mm., of the genitalia of Oreohelix cooperi. Locality. Glenevre, Colo., 7,000 ft, S2.1S5 McCammon, Idaho, Station 1 Eureka, Utah, Station 6... O. cooperi maxima. Yellowstone Park, 96,973 Black Range, X. M. Sta. 26 MS r - i. - «- 8.6 4.6 4.3 12 7.5 5.5 12 6.5 5 14.5 8.7 5 15.5 9 5 2.4 5.3 4 10 9 2 3.7 3.7 5 5 11 i 16-18 21 22 15-16 24 26 Fig. 3 Fig. 2 Fig. 4 Fig. 1 Oreohelix yavapai extremitatis Pils. & Ferr. PI. 22, figs. 6, 6a. The specimen figured is from Shell, Wyoming (Pilsbry, Nautilus XXVII, 1913, p. 50). The penis is short, its lower two-thirds swollen, upper third cylindric; internally there are very low, short folds bounded above by a low narrow transverse ridge, in the enlarged part, the upper part having densely papillose walls. Fig. 6a repre- sents the penis opened and pinned flat. The papilla? in the upper portion are represented diagrammatically. The epiphallus is not quite half as long as the penis. The base of the spermatheca duct is enlarged, as usual. The uterus contained 8 embryos in the indi- vidual figured, the largest of 2^ whorls. Length of penis 7 mm., of its internally costate part 4.5; epiphallus 3.3 mm.; vagina 2 mm.; spermatheca and duct 13 mm. The central and 5 or 6 inner lateral teeth have no side cusps. The seventh lateral has a well developed ectocone. The jaw is striate as usual in the genus. The animal is purplish black above and on the sides, the sole cream colored. The embryonic shell has 2\ whorls, is convex above with an angular, not acute, periphery. The first \\ whorls are convex with irregular growth stria?, some microscopic spirals then appearing. The last third of a whorl has about 5 coarse but very low spirals, and the 352 PROCEEDINGS OF THE ACADEMY OF [May, cuticle, under a high power, is seen to be minutely crinkled, also on the base. Oreohelix conoentrata (Dall). PI. 22, fig. 9. The specimen figured is No. 94,343 A. N. S. P., from Miller's Peak, Huachuca Mts., Arizona. The penis is swollen below the middle, length 8 mm., length of internally costate part 4.5 mm.; of epiphallus 4 mm.; of vagina about 3.6 mm. Diameter of the shell 15.5 mm. This agrees substantially with the large form of the same district, 0. c. form huachucana (Pilsbry, Proc. A. N. S. Phila. 1905, p. 275, pi. 19, fig. 6). Both differ from 0. strigosa by the swollen penis and relatively larger costate portion, which occupies more than half the total length, as in 0. cooperi. My former reference of concentrata and huachucana to 0. strigosa as subspecies was clearly erroneous, and due to the fact that I had not dissected enough Oreohelices to appre- ciate their specific characters. In the general discussion of the anatomy (Proc. A. N. S. Phila. 1905, p. 271), 0. strigosa and huachu- cana were put in separate divisions. Oreohelix metoalfei Ckll. PI. 22, fig. 10. Collected in abundance by Mr. Ferriss and the writer, in the Black Range, New Mexico. The penis resembles that of 0. concen- trata and 0. pilsbryi, the median portion being much swollen, with very thick walls, and broad, longitudinal ribs inside. The much narrower, twisted upper portion has coarse papillae within, and one longitudinal papillose rib. Length of penis 12 mm., of its internally costate portion 7 mm.; of epiphallus 4 mm.; vagina 4 mm. Diameter of the shell 19.5 mm. The radula has 12 lateral teeth on each side, like those of 0. s. depressa except that the cusps are more slender. Oreohelix pilsbryi Ferriss. PI. 22, fig. 8. Genitalia about as in 0. metcalfei. The swollen part of the penis has about 6 unequal ribs within; these project slightly into the cavity of the papillose portion, which has one longitudinal rib. Length of penis 12, of the ribbed portion 7 mm.; epiphallus 4 mm.; penial retractor 4 mm.; vagina '4 mm.; spermatheca and duct 15 mm. Diameter of the shell 17.6 mm. Although the shell of 0. pilsbryi has an astonishing similarity to that of 0. haydeni, the genitalia show that there is no direct relation- ship. 0. metcalfei is closely related to pilsbryi, being anatomically indistinguishable. 1916.] natural sciences of philadelphia. 353 Catalogue of species, subspecies, and other named forms. Note. — An asterisk (*) following a specific or varietal name indi- cates that a figure of the genitalia has been published by the writer, and serves to show what species and subspecies require examination. Several other subspecies of the Arizonian species have been dis- sected but not figured. 0. idahoensis (Newc). Coeur d'Alene district, Idaho. O. cooperi (W. G. B.).* Black Hills, S. Dakota; (Rocky Mountains). Forms trifasciata Ckll., Mesa Co., Colo.; confluens Ckll., Gar- field and Mesa Cos., Colo.; elevata Ckll., Delta Co., Colo.; typica Ckll., Colo.; minor Ckll., Rouett Co., Colo.; iowensis Pils., Loess of Iowa; maxima Pils.,* Yellowstone Park. 0. c. stantoni Dall. Assiniboia. 0. c. globosula Ckll. Summit Co., Colo. (Syn. globulosa Pils.). 0. c. berryi Pils. Snowy Mts., Fergus Co., Mont. 0. rugosa (Hemph.).* Near Brigham City, Utah. O. peripherica ( Ancey) . * Bear River region, Northern Utah. (Syn. , multicostata, Hemph.) Forms binneyi, castanea, albofasciata, gouldi Hemph. 0. p. newcombi (Hemph.). Near Ogden, Utah. 0. p. wasatchensis (Hemph.). Near Ogden, Utah. 0. pygm.ea Pils. Near Shell, Wyoming. O. strigosa (Gld.). "Interior of Oregon." 0. s. parma (Hemph.). Spokane Falls, Washington. 0. s. jugalis (Hemph.). Salmon River, Idaho. 0. s. intersum (Hemph.). Salmon River, Idaho. 0. s. limitaris (Dawson). Waterton Lake, Montana-Alberta boundary. 0. s. alpina Elrod. Mission Range, Montana. (Svn. : montana Elrod.) O. s. subcarinata (Hemph.). Rathdrum, Idaho. Forms lactea, bicolor and picta Hemph. Same colony. O. s. depressa (Ckll.).* Near Durango, Colo.; (Southern Idaho to northern Arizona, Colo., New Mexico). Form major Ckll. Mesa Co., Colo. " sinistrorsa Ckll., Colorado. cornea Hemph.* Near Salt Lake City, Utah. albida Hemph. Near Logan; Utah. (? Syn., Patula strigosa var. alba Ckll., preoc). " tooelensis Hend. and Dan.* Near Tooele, Utah. 0. s. fragilis (Hemph.).* Near Franklin, Idaho. 0. s. buttoni (Hemph.).* Box Elder Co., Utah; also near Ogden. 0. s. magnicornu Pils. Big Horn Mts., Wyoming. 0. hendersoni Pils.* Little Thompson Creek, 10 miles N. W. of Longmont, Colo. 0. h. dakani Hend. New Castle, Colo. (? = rugosa Hemph.). 354 PROCEEDINGS OF THE ACADEMY OF [May, 0. haydeni (Gabb.). Weber canyon, Utah. 0. h. oquirrhensis (Hemph.). Oquirrh Mountains, Utah. 0. h. gabbiana (Hemph.).* Oquirrh Mountains, Utah. 0. h. utahensis (Hemph.). Oquirrh Mountains, Utah. 0. h. corrugata Hend. and Dan.* Small, nearly isolated moun- tain, southeast of Webster, Utah. 0. h. hybrida (Hemph.).* Near Logan, Utah. 0. h. betheli Pils. and Ckll.* Glen wood Springs, Colorado. Form alta Pils. and Ckll. Glenwood Springs, Colorado. O. h. mixta Pils.* Glenwood Springs, Colorado. O. hemphilli (Newc). White Pine mining district, Nevada. O. h. eurekensis Hend. and Dan. Eureka, Utah. O. tenuistriata Hend. and Dan. Between McCammon and Hot Lava Springs, Idaho. O. carinifera Pils. Garrison, Montana. 0. bruneri (Ancey). Montana. (Not seen by the author, and unknown in American collections.) 0. elrodi Pils.* MacDonald Lake, Mission Range, Montana. O. yavapai Pils.* Yavapai Co., Arizona, etc. O. y. neomexicana Pils.* San Miguel Co., New Mexico. 0. y. compactula Ckll. Pecos canyon, New Mexico. 0. y. extremitatis Pils. and Ferr.* Grand Canyon, Ariz.; also northern Wyoming. O. y. angelica Pils. and Ferr. Grand Canyon, Arizona. 0. y. profundorum Pils. and Ferr. Grand Canyon, Arizona. 0. y. marise Bartsch. Squaw Creek, near mouth Gallatin Canyon, Montana. O. concentrata (Dall).* Huachuca Range, Arizona. Form huachucana Pils.* Huachuca Range, Arizona. O. metcalfei Ckll.* Black Range, New Mexico. O. pilsbryi Ferriss.* Mineral Creek, Chloride, Sierra Co., New Mexico. O. barbata Pils.* Chiricahua Range, Arizona; also Mogollon Range, N. M. 0. b. minima Pils. and Ferr. Chiricahua Range, Arizona. O. socorroensis Pils. Socorro Co., New Mexico. Subgenus Radiocentrum Pils. O. avalonensis Hemph. Catalina Island, California. O. CHiRiCAHUANA Pils.* Cave Creek Canyon, near the cave, Chiricahua Range, Arizona. 0. c. percarinata Pils. and Ferr. Big Emigrant Canyon, and Paradise Canyon, Chiricahua Range, Arizona. 0. c. obsoleta Pils. and Ferr. White Tail Canyon, Chiricahua Range, Arizona. O. clappi Ferriss.* Cave Creek, etc., Chiricahua Range, Arizona. 0. c. emigrans Pils. and Ferr. Big Emigrant Canyon, Chiri- cahuas. O. c. cataracta Pils. and Ferr. Falls of Cave Creek, Chiri- cahuas. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 355 O. ferrissi Pils.* Near mouth of Sheridan Canyon, Big Hachet Mountains, New Mexico. 0. f. morticina Pils. Daniels Peak, Big Hachat Mts., New Mexico. <). hachbtana Pils.* Summit of Big Hachet Mt., New Mexico. 0. h. cadaver Pils. Daniels Peak, Big Hachet Mts., X. M. Notes on the preceding list. In presenting a new catalogue of a genus wherein specific values have been so variously estimated, a brief consideration of the growth and changes of opinion on the subject may be in order. In their work of 1869, Binney and Bland recognized Helix strigosa, H. cooperi and H. idahoensis as species, no others being then known. In 1878 (Terrestrial Mollusks, Vol. 5) Mr. Binney added H. haydeni and H. hemphilU, and reduced cooperi to a variety of strigosa. In his latest general work, Manual of American Land Shells, 1885, Mr. Binney reduced haydeni to the rank of a variety of strigosa. After this, the remarkable series from Idaho and Utah collected by Henry Hemphill caused Binney to view the entire series of known forms as varieties of stiigosa. This view was generally accepted, as Mr. Binney was conceded to be the leading authority of his time on American land snails. Mr. Hemphill went further than Binney, ranking the whole group as varieties of the Eastern H. alternata Say. It may be noted here that a relatively small number of species, from only a part of the area of the genus, were known to Binney and Hemphill. The last 15 species of the list given above were unknown at that time. This includes the whole southern group of species having swollen penes and the Radiocentrum group (with one exception), besides various lately discovered northern forms of very distinct appearance. In dealing with the species and other forms de- scribed prior to 1890 we return to Binney's earlier opinion, and regard strigosa, cooperi, idahoensis, haydeni and hemphilU as species. 0. peripherica and 0. hendersoni, while near strigosa, seem to be sufficiently detached to be considered species. 0. rugosa, though near cooperi, is for the time given specific rank. Both of these differ specifically from strigosa by the genitalia. Many of the subspecies now recognized were already defined by Binney and Hemphill as varieties of strigosa. If the criterion of intergradation with other forms were rigorously applied to them, several would be judged species; yet in actual practice, and as a temporary expedient until the territory is more fully explored, we take the degree of differentiation into the account. In dealing with the forms of single colonies, scattered over a great extent of 356 PROCEEDINGS OF THE ACADEMY OF [May, unexplored country, our present conclusions must be mere approxi- mations to the facts, which future exploration may be expected to bring out. In treating of forms which are in doubt it seems to me better to attach them as subspecies to a known species, rather than to increase the number of ill-defined species. Oreohelices sometimes have strongly marked conchological features, but when this is not the case, species should not be established in my opinion, without anatomical examination. It seems likely that some forms now considered subspecies of 0. strigosa will be elevated to specific rank when their areas are well explored, and their soft anatomy worked out. The "forms" of the list above are of unequal value, but all are inserted in order that all names proposed may appear in the list. Some of them are mere synonyms; some are color or size forms, from heterogeneous colonies, in which several mutations are per- petuated in hybrid populations,6 such as I have described in Achati- nella.6 Others are races probably deserving recognition in nomen- clature. Much more study must be put on Oreohelix before we can confidently assign all the forms to their approximately proper rank. 0. cooperi (W. G. B.). No serious study of the races and forms of this wide-spread species has recently been made. Many years ago Professor Cockerell proposed several varietal names, but in the absence of figures, the application of some of them, as well as their status, has been uncertain. A recent communication from Professor Cockerell quoted below, elucidates them so far as possible in the present condition of the subject. (1) typica = 0. cooperi s. str. (2) confluens. (3) trifasciata. Color (band) variations of cooperi, common and well known to us here. Not in any sense special races. Type specimen of confluens is in U. S. N. M. (4) elevata. A form of cooperi with more elevated spire. Merely an extreme of the ordinary variation of the species; riot a race. (5) minor. The name was originally given in Nautilus May, 1889, p. 8, and referred to a small form cited by Hemphill. Later I found what I considered to be the same in Colorado, apparently a distinct race. Henderson has used the name for a race in recent years. Now we are both uncertain whether the name should be applied in this sense. It is a fact that in certain localities the shells are small and constitute a "minor" race, but whether all the various colonies of this type have any connection with one another may be questioned. The original intention was to follow the European custom, and call all the shells below a certain size minor, not regarding the variety as a race or subspecies in any sense. Henderson and I, after consultation, agree that the status of minor must be considered subject to revision. (6) globosula. This we have, and can recognize it as a peculiar variation which occurs in the Glenwood Springs district. It occurs in small numbers on the south side of the river, along with the other forms. It may be a hybrid of 5 See the valuable observations of Daniels. Nautilus XXV, 1911, p. 18. 6 Manual of Conchology, Vol. XXII. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 357 some sort. It does not seem to be a distinct race or subspecies, but it is not found in other parts of the state so far as we know. The type locality is some, distance from the Glenwood Springs locality, but a wide range does not appear probable. We can affirm, I think, that this is not a mere variation of the ordinary type, such as confluens, etc.; but whether it is a distinct, race may well be doubted. Further research is needed. (7) depressa. This you know well. (8) major. Simply a large depressa; not a race. (9) sinistrorsa. Sinistral examples. (Brit. Naturalist. ) Thus, only two names are at all doubtful, and here the doubt is essentially one as to the facts of nature rather than of nomenclature. (Theo. D. A. Cockerell.) 0. cooperi form maxima is a shell with about the typical shape of cooperi, but of large size, the type measuring, alt. 17.6, diam. 26 mm., umbilicus 5 mm., whorls 5i, more rounded than in 0. strigosa depressa. There is a band at, another above the periphery, and below the suture a wider, paler one interrupted into maculae. Genitalia, pi. 22, fig. 1, normal for cooperi. The type is from Yellowstone National Park 10 miles southwest of Jardine, Montana, No. 96,973 A. N. S. P., collected by E. M. Kindle. Other specimens are from Grade Canyon near Cokeville, Uinta Co., Wyoming, collected by Mr. J. A. G. Rehn. One of these measures alt. 17.7, diam. 26 mm. In addition to the markings described above, it has a few faint brown circular lines on the base. Form iowensis Pils. is quite small, height 7.7, diam. 11.4, umbilicus 2.6 mm., with 4f whorls. There is a reddish band just under the periphery, and the initial whorl is very convex and smooth. It is from the loess, type-locality, Iowa City, Iowa. It probably stands close to stantoni, which still exists in an environment perhaps not very unlike the loess climate of Iowa. 0. p. wasatchensis is so peculiarly modified that one is strongly inclined to give it specific rank. The elevated spire, the compactly coiled whorls and the peripheral carina all differentiate it from 0. peripherica. Yet 0. p. newcombii stands almost intermediate between wasatchensis and peripherica. It does not differ from the coarsest examples of the latter in form or ribbing, but it has a delicate peripheral keel which continues as far, usually, as the last whorl, whereas 0. peripherica has no keel in the later neanic and the adult stages. Possibly both newcombi and wasatchensis may eventually be ranked as species; but until further collections can be made, I leave them associated with 0. peripherica, with the note that at present we do not have actual evidence of intergradation. In this connection we may allude to the status of 0. pygmcea, which may turn out to be a subspecies of 0. peripherica; yet here again, evidence of intergradation is wanting. 358 PROCEEDINGS OF THE ACADEMY OF [May, Explanation of Plates XIX, XX, XXI, XXII. Note. — The "stations" referred to are those of Messrs. Henderson and Daniels Expedition of 1915. Plate XIX. — Fig. 1. — Oreohelix strigosa depressa (Ckll.) Manitou Canyon, Colorado Springs, Colo. Fig. 2. — 0. s. depressa (Ckll.) Harkness Canyon, near McCammon, Idaho, Station 2. Fig. 3. — 0. s. depressa form carnea (Hemph.). Drv Canyon, near Salt Lake City, Utah, Station 43. Fig. 4. — 0. s. depressa (Ckll.). First gulch south of Logan Canyon, east of Logan, Utah, Station 41. Fig. 5. — O. s. fragilis (Hemph.). About a mile west of Franklin, Idaho, Station 38. Penis only figured. Fig. 6.— 0. s. depressa (Ckll.). About a mile up Emigration Canyon, southeast of Salt Lake City, Utah, Station 46. Fig. 7. — 0. s. depressa (Ckll.*). Ogden Canyon, Utah, Station 22. Plate XX. — Fig. 1. — Oreohelix peripherica (Aneey). Ravine in east bluff of Bear River, just below Wheelon, Utah, Station 33, banded form, la, penis of same, pulled straight, with epiphallus. Fig. 2. — 0. peripherica (Anc). Same station, white form. Fig. 3. — 0. peripherica (Anc). East bank of Bear River below Cache Junction, Utah, Station 29. 3a, penis of same, opened to show internal structure. Fig. 4. — 0. peripherica (Anc). Gulch opening into North Ogden Canyon, Station 26. A relatively smooth specimen. Fig. 5. — 0. peripherica (Anc), Mountain northeast of Newton, Utah, Station 36. Smooth form of the species. . Fig. 6. — 0. peripherica (Anc). East bank of Bear River, below Cache Junction, Utah, Station 30. Fig. 7. — Oreohelix hendersoni Pils., one of the original lot. Fig. 8. — Oreohelix strigosa depressa (Ckll.). Rock Canyon, east of Provo, Utah, Station 44. Plate XXI. — Fig. 1. — Oreohelix haydeni gabbiana (Hemph.). Oquirrh Mts., Station 15. Fig. 2. — Oreohelix haydeni betheli Pils. and Ckll. Glenwood Springs, Colo- rado. No. 94,059 A. N. S. P. Fig. 3. — 0. haydeni mixta Pils. Glenwood Springs, Colorado. No. 94,058 A. N. S. P. Fig. 4. — Oreohelix haydeni corrugata Hend. and Dan. Small mountain southeast of Webster, Utah, Station 40. Fig. 5. — Oreohelix s. depressa, form tooelensis Hend. and Dan. About 6 miles northeast of Tooele, Utah, Station 10. Fig. 6. — Oreohelix strigosa buttoni (Hemph.). Taylor Canyon, near Ogden, Utah, Station 16. Fig. 7 '.—Oreohelix strigosa depressa (Ckll.). Oquirrh Mountains, Utah, Station 13. Fig. 8. — Oreohelix haydeni hybrida (Hemph.). Gulch south of Logan Canyon, Station 42. Plate XXII. — Fig. 1. — Oreohelix cooperi (W. G. B.), form maxima Pils. Yellow- stone National Park. No. 96,973 A. N. S. P. Fig. 2. — 0. cooperi (W. G. B.). McCammon, Idaho, Station 1. Fig. 3.— O. cooperi (W. G. B.). Gleneyre, Colorado. No. 82,185 A. N. S. P. Fig. 4. — O. cooperi (W. G. B.). Eureka, Utah, Station 6. Fig. 5. — O. haydeni mixta Pils. Glenwood Springs, Colorado. No. 94,796 A. N. S. P. Fig. 6. — Oreohelix yavapai extremitatis Pils. and Ferr. Shell, Wyoming. 6a, penis of same, opened, with the epiphallus. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XIX. PILSBRY: ANATOMY OF OREOHELIX. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATElXX. PILSBRY: ANATOMY OF OREOHELIX. PROC. ACAD. NAT. SCI. PHILA. 191(3. PLATE XXI. PILSBRY: ANATOMY OF OREOHELIX. PROC. ACAD. NAT. SCI. PHILA. 191G. PLATE XXII. PILSBRY: ANATOMY OF OREOHELIX. 191(5.] NATURAL SCIENCES OF PHILADELPHIA. 359 Fig. 7. — Oreohelix rugosa (Hemph.). Near Clarkston, Utah, Station 3. ~,i. penis of same, pulled straight. Fig. 8. — Oreohelix pilsbryi Ferriss. Type-specimen. Fig, 9 — Oreohelix cona ulrntn (Dall). Huachuca Alts., Arizona. No. 94,343 A. N. S. P. Fig. 10.— Oreohelix metcalfei Ckll. Black Range, New Mexico, Pilsbry and Ferriss, Station 15, 1915. 360 PROCEEDINGS OF THE ACADEMY OF [May, SOME BEES FROM AUSTRALIA, TASMANIA, AND THE NEW HEBRIDES. BY T. D. A. COCKERELL. In a paper published in Proc. Acad. Nat. Sci. Phila., 1913 (pp. 28-44), I gave a summary of the then known bee-fauna of Australia. During the last two years additional material has come to hand, and the present paper represents the completion of the later work, so far as the material now available permits. Perhaps the most interesting problem now before us in connection with the new collections is that of the radical difference between the bee-faunae of Tasmania and New Zealand. It becomes increasingly evident that while Tasmania is very poor in genera as compared with the Australian mainland, it is extremely rich in species in comparison with New Zealand. There can be no doubt that careful collecting in New Zealand will yield a number of additional species, but it is impossible to believe that it will at all approach Tasmania in the extent of its bee-fauna. The Tasmanian bees are very close to those of Australia, and many are even identical, showing clearly the derivation of the fauna. The New Zealand fauna is also wholly of Australian type, but extremely poor in genera and species. Isola- tion has prevented the accession of species from across the water, but one would expect a much greater development of endemic forms, something more or less parallel with the condition in the Hawaiian Islands. The New Zealand species are all endemic ; Prosopis vicina Sichel was said to occur in Tasmania and New Zealand, but it was almost certainly based on a mixture, and the name is to be restricted to the New Zealand species. "Andrena" infima Erichs., from Tasmania, is probably, but not certainly, Halictus lanarius Smith. Mr. Meade-Waldo of the British Museum agrees with me that Paracolletes providus Sm. is P. chalybeatus Erichs. The species which Smith called chalybeatus Mr. Meade- Waldo thinks should be united with P. obscurus Sm. With these amendments the lists for Tasmania and New Zealand stand as follows. The Tasmanian species also found on the Australian mainland are marked with an asterisk. Tasmania. (79 species.) Prosopis alcyonea Erichs.* Prosopis perhumUis Ckll.* honesta Sm. xanthospheera Ckll. (King I.) hobartiana Ckll. accipitris Ckll. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 361 Pachyprosopis Jluvicauda Ckll.* Euryglossa waUeeriana Ckll. nigroccerulea Ckll.* fastiatella Ckll.* latissiina Ckll. nvbilipi nn is Ckll. Callomelitta picta Sm.* //«/<■/•/ Ckll. Binghamiella antipodes insularis Ckll. Paracolletes chalybeatus Erich*.* obscurus Sm. viridicinctus Ckll. obscuripennis Ckll. hobartensis Ckll. carinatus Sm.* melbournensis Ckll.* /ecu Ckll. margined its Sm.* launcestonensis Ckll. sitbriridis Ckll. Nomia submccrens Ckll. Halictus orbatus Sm.* cognatus Sm. limatus Sm. globosus Sm. reprcesentans Sm.* furneauxi Ckll. fcftfy/n Ckll. 6ass/ Ckll. baudini Ckll. boweni Ckll. demissas Ckll. imitons Ckll.* seductus Ckll.* semi poll tits expulsus Ckll. macrops Ckll. Hal id ks confusellu8 Ckll. familuiris Erich-. warburtoni ( Jkll. mitchelli Ckll. frwrfcei CHI. lanarius Sm.* hoematopus ( Jkll. Kttteri CHI. cyclognathus Ckll.* opacicollis ( Jkll.* niveifrons Ckll. disclusus Ckll. isthmalis Ckll. subinclinans Ckll. pulvitectus Ckll. tasmanioe Ckll. Parasphecodes tilachus Sm. lithusca Sm. talchius Sm. stiichila Sm. alt i chits Sm. taluchis Sm. 7-ecessus Ckll. pei'itstus Ckll. rhodopterus Ckll. rufotegularis Ckll. cervicalis Ckll. latissimus Ckll. excitltus Ckll. wellingtoni Ckll. turneri Ckll. Megachile Uncopyga Sm. chrysopyga Sm.* ordinaria Sm. tasmanica Ckll. Exoneura bicolor Sm.* hamulata Ckll.* New Zealand. (18 species.) Prosopis agilis Sm. agfi7is laevigata Sm. capitosa Sm. innocens Cam. maoriana Ckll. relegata Sm. cameroni Ckll. (sulcifrons Cam.) vidua Sich. Paracolletes boltoni Ckll. confusns Ckll. Paracolletes imitatus Sm. fulvescens Sm. metallicus Sm. pur pure us Sm. vest it us Sm. maorium Ckll. Halictus huttoni Cam. smithii D. T. • jinn iliu r is Sm.) sordid us Sm. 362 PROCEEDINGS OF THE ACADEMY OF [May, Pachyprosopis saturnina Ckll. Perth, Australia, Feb. 1-7, 1914. (R. E. Turner; Brit. Museum). The markings vary; the yellow at anterior corners of mesothorax may be extended, curving round to make two bands on anterior part of disc; there may be a large yellow extension of lateral face- marks mesad of lower end of facial fovea? ; the scutellum in the Perth form is practically all yellow. Euryglossina hypochroma sp. n. 9. Length about 3.75 mm.; robust, head and thorax shining black; abdomen dark, faintly purplish, above, but clear reddish- yellow below; legs clear yellowish-ferruginous, the anterior femora sometimes mainly black on outer side; mandibles chestnut red, dark at tip; a large yellowish spot on cheeks just above base of mandibles; clypeus and supraclypeal band fulvotestaceous (perhaps yellower in life) ; a very slender fulvous line running up inner orbits as far as facial fovese; scape with a light stripe; flagellum thick, clear fulvous beneath; head large, subquadrate, front convex, shining; tubercles clear yellow; mesothorax shining, with extremely minute and sparse punctures, the disc microscopically cancellate; tegulae testaceous; wings hyaline, nervures and the large stigma sepia; b. n. strongly arched; first r. n. joining first s. m.; second s. m. sub- quadrate; extreme apex of abdomen ferruginous. Hob.— Perth, W. Australia, Feb. 1-7, 1914 (R. E. Turner; Brit. Museum.) 2 9 Allied to E. perpusilla (Ckll.), but larger and more robust, with fulvous clypeus, etc. It resembles Pachyprosopis atromicans Ckll., but is easily separated by the color of the femora, much smaller second s. m., etc. Euryglossina flaviventris sp. n. 9. (Type). Length about 3.75 mm.; head and thorax black; abdomen black with a faint purplish tint above, the venter clear yellow, the extreme lateral margins and the apex rather broadly (the light color more extensive than in E. hypochroma) also yellow; legs bright yellow, anterior femora sometimes marked with black, hind tibiae and tarsi dark brown on outer side; mandibles fulvous; a small fulvous spot on cheeks next to base of mandibles; linear lateral face-marks as in E. hypochroma; upper half of clypeus, and a supraclypeal band yellow; antennae fulvous beneath; front shining; mesothorax microscopically tessellate; tubercles yellow. c? . Clypeus, supraclypeal area and comparatively broad lateral face-marks yellow, the pattern essentially as in E. perpusilla; the lateral face-marks have a small projection opposite antennae. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 363 Hab. — Mt. Yule, Healesville, Victoria, Feb. 20, 1915, on Eucalyptus calophylla rosea, 3 9,1 d1. (R. Kelly; Brit. Museum.) Very close to E. hypochroma, from which the female is known by the dark lower part of clypeus and the more broadly light apex of abdomen. A! very close to E. perpusilla Ckll., but larger, with more lighl color on abdomen. It may be better regarded as a subspecies of E. perpusillaj but it appears quite distinct. Euryglossina perpusilla var. nana a. v. 9. Length hardly 3 mm.; abdomen wholly dark above, yellow beneath; clypeus and supraclypeal area wholly black (as in E. cockerelli Perkins) ; linear lateral face-marks poorly developed or absent; stigma dilute sepia. Hob.— Kalamunda, S. W. Australia, Feb. 9-28, 1914, 2 9 ; also one March 1-11. 1914, 850 ft. {R. E. Turner; Brit, Museum). Com- pared with typical E. perpusilla, this looks distinct; but the Queens- land perpusilla are so variable that it seems impossible to distinguish more than a variety. Some Mackay females lack the supraclypeal band. Binghamiella antipodes insularis (Ckll.). Mr. Littler has taken both sexes of Binghamiella at George Town, Tasmania, March, 1915. The males agree with my B. insularis; the females are what has passed as B. antipodes from Tasmania, but have the same essential distinctive characters as the males. There is sufficient reason for regarding the Tasmanian bee as a subspecies, but hardly a species. Euryglossa depressa sparsa subsp. n. 9 . Differs from E. depressa Sm. by the very sparsely though very strongly punctured scutellum, and the anterior middle of meso- thorax with scattered irregular punctures, instead of very numerous fine ones; also by having the nagellum ferruginous beneath, though this is variable, and sometimes very obscure. It is readily known from E. subsericea Ckll. by the darker, brown-stained wings, facial quadrangle shorter, etc. The mesothorax and scutellum are much more sparsely punctured than in E. nigrocoerulea Ckll. Hab. — Mt. Yule, Healesville. Victoria, Feb. 20, 1915, on Eucalyptus calophylla rosea — (R. Kelly; Brit. Museum). 3 9. Smith- description is insufficient to indicate which is the typical race of E. depressa, but I have taken as such the form which appears to be common in Victoria. 25 364 PROCEEDINGS OF THE ACADEMY OF [May, Prosopis extensa sp. n. 9 . Length about 4 mm. ; slender, with long metathorax and subclavate abdomen, looking like some small Pemphredomd wasp; black, the front with an extremely obscure greenish tint; the thorax dull, with the prothorax, pleura and posterior face of metathorax shining; abdomen shining; head not far from round in front view; mandibles, labrum, linear lateral face marks ending about level of antenna?, lower margin and greater part of disc of clypeus yellowish- ferruginous, the pale color on clypeus ending suffusedly above; labial palpi with the second joint remarkably short and stout, almost globose, the third and fourth cylindrical, the third twice as wide as the fourth; maxillary palpi with the basal part stout, the second joint longest, the sixth tapering at end; antennae rather slender; scape yellow in front, flagellum pale ferruginous beneath; front minutely punctured; vertex elevated, rounded; narrow (ridge-like) upper border of prothorax and the tubercles white; mesothorax densely sculptured with minute punctures and strise; area of meta- thorax very large and long, minutely cancellate; legs black, the anterior tibiae pale ferruginous in front; tegulae piceous; wings hyaline, nervures and the large stigma piceous; b. n. falling far short of t. m. ; first r. n. reaching first s. m. a considerable distance from its apex; second s. m. very small, quadrate; abdomen with microscopic transverse lineolation. Hab. — Mt. Yule, Healesville, Victoria, on Eucalyptus calophylla rosea, Feb. 20, 1915 (R. Kelly; Brit. Museum). A very peculiar little insect, with Euryglossina venation. It is perhaps most like P. scintilliformis Ckll., from which it is known at once by the venation. It is by no means a typical Prosopis. Prosopis aralis sp. n. 9 . Like P. perhumilis (which was collected on the same plant at same time and place), but the white face-marks are extended, the broad clypeal band having below (on apical margin of clypeus) a transverse narrow band extending on each side at right angles, while the supraclypeal area has a broadly triangular light mark, the clypeal marking thus resembling an altar with pedestal at base, the offering represented by the supraclypeal mark; hind tibiae with more than basal third pale; all the basitarsi cream-color. The basal nervure nearly reaches t. m. Hab. — Mt. Yule, Healesville, Victoria, on Eucalyptus calophylla rosea, Feb. 20, 1915 (R. Kelly; Brit. Museum) 2 9 . Possibly a variety of P. perhumilis, but apparently distinct. In the coloration of the legs it resembles P. accipitris Ckll., from Tasmania. 1910.] NATURAL SCIENCES OF PHILADELPHIA. 365 Prosopis scintilliformis Ckll. 9. Length about 4.75 nun.; black, similar to P. perhumilis and oralis, but more slender; mandibles white, rufous at end: narrow creamy-white bands along anterior orbits to level of antennae; clypeus and supraclypeal area entirely black: first r. n. meeting first t. c.; legs marked as in oralis. Scape with a light stripe in front; fiagellum pale fulvous beneath; tubercles and transverse marks on prothorax cream-color. cf. Length about 4 mm. ; slender like the 9; face below antenna? (including transverse supraclypeal mark), and lateral marks with pointed extensions upward at sides, all very pale ochreous (perhaps yellower in life). The face-pattern is like that of the larger and more robust P. perhumilis, except that the lateral marks have their inner side longer, extending to beyond the middle of the supraclypeal mark. Both have the fourth antennal joint extremely short. Hob. — Mt. Yule, Healesville, on Eucalyptus calophylla rosea, Feb. 20, 1915 (R. Kelly; Brit. Museum). 3 9,1 d1. The species was described (1913) from a single female collected at Croydon. The male is very distinct from P. minuscula Ckll. Prosopis trimerops sp. a. 9 . Length about or hardly 4 mm.; another species of the type of P. perhumilis, but very minute, robust; face-marks rufofulvous (probably yellower in life), consisting of a broad clypeal band, broad lower margin of clypeus (leaving long-cuneiform black areas at sides of clypeus), narrow lateral face-marks which end acutely on orbital margin a little above level of antenna?, and large supraclypeal mark, which is broad below, more narrowed above, and ends in a broad truncation between the antennae; the supraclypeal area is convex; scape with a light stripe: fiagellum fulvous beneath; thorax robust, mesothorax finely lineolate and punctured; upper border of thorax without pale marks, and tubercles with only a very narrow yellow edge; legs marked nearly as in P. aralis, but hind basitarsi with only the basal half pale: b. n. almost meeting t. m. ; second s. m. broad, receiving first r. n. near its base. Hob.— Yallingup, S. YV. Australia, Nov., 1913, 2 9 (R. E. Tun Brit. Museum.) Prosopis vittatifrons Ckll. Perth, Australia, Feb. 1-7. L914 (/?. E. Turner; Brit. Museum). Paracolletes halictiformis sp. a. 9. Length about 8 mm., rather robust, with short wings: black, with mostly white pubescence; head broad: mandibles red. black 366 PROCEEDINGS OF THE ACADEMY OF [May, at base and apex; clypeus closely and very strongly punctured, but shining between the punctures; sides of face and cheeks with con- spicuous pure white hair; front extremely densely punctured, the punctures strong, but much smaller than those on clypeus; area behind ocelli with erect fuscous hair; flagellum short, ferruginous beneath apically ; mesothorax and scutellum with very dense distinct punctures; longitudinal median groove of mesothorax distinct ; mesothorax and scutellum with evident pale hair around the edges, but otherwise only with thin short brownish hair, not hiding the surface; postscutellum with a tubercle, from which arises a large spreading tuft of hair, partly brownish and partly whitish; area of metathorax rugulose basally, margin finely beaded; posterior face of metathorax with a large deep pit; legs black, the hind tibiae red, the middle and hind basitarsi very broad; hind tibial scopa large, sordid white, suffused with brown behind; tegulse rufotestaceous; wings dusky; stigma small, dark reddish, nervures fuscous; b. n. just reaching t. m.; second s. m. receiving first r. n. slightly before middle; third s. m. receiving second r. n. nearly as far from end as first r. n. is from first t. c; abdomen thick, very finely punctured; hind margins of segments brownish; segments 2-4 with conspicuous white marginal hair-bands, interrupted or very thin in middle of 2; hair at apex dark fuscous. Hob — Yallingup, S. W. Australia, Dec. 1 to Jan. 23, 1913-14. (R. E. Turner; Brit. Museum.) A peculiar little species, resembling Halictus. It may best be compared with P. sigillatus Ckll., but it is smaller than that, with much more closely punctured mesothorax. It may also be compared with the much larger P. perfasciatus Ckll. Halictus urbanus Smith. Kalamunda, S. W. Australia, Mch. 14-Apl. 14, 1914 (R. E. Turner; Brit. Museum). 1 9 . This species, as I have recognized it, varies considerably in size and the color of the legs; it may be composite. The Kalamunda specimen is small, with red tibiae and tarsi, and agrees with one from Brisbane. This appears to be the true H. urbanus; the larger form (9 slightly over 6 mm. long), with black legs, comes from Stradbroke Island (H. Hacker), and certainly would pass for a distinct species, were it not connected by intermediates. This Stradbroke I. form may take the name variety stradbrokensis , nov. Halictus mundulus sp. n. 9 . Length about 5 mm. ; black, with the mesothorax and scutel- lum dark bluish-green; pubescence scanty, dull white, no abdominal 1916.] NATURAL SCIENCES OF PHILADELPHIA. hands or patches; head broad; mandibles ferruginous, dusky apically and black at extreme base; flagellum clear ferruginous beneath; mesothorax moderately shining, scutellum more polished; area of metathorax semilunar, densely irregularly wrinkled, the obtuse margin shining; knees, tibiae and tarsi ferruginous, the tibia with obscure dusky suffusion; tegulae amber color; wings hyaline, stigma and nervures pale testaceous; first r. n. meeting second t. c; outer r. n. and t. c. colorless and very thin; abdomen broad, polished, with very thin pubescence: hind margins of segments obscurely reddish; caudal rima bright ferruginous; hair of venter long, but no1 curled to form a true scopa. Microscopical characters; clypeus very sparsely punctured; front striate, with punctures between the straiae; third antennal joint extremely short, fourth a little longer, fifth still longer; mesothorax lineolate, with scattered punctures; abdomen with extremely minute punctures, best developed on fir-t segment; hind spur with one very large obtuse tooth (like the last joint of a finger) and one very low rounded lamella. Hob.— Kalamunda, S. W. Australia, Mch. 14-Apl. 14, 1914 (R. E. Turner; Brit. Museum). Allied to H. urbanus, but with the meso- thorax quite differently colored. It may also be compared with H. humilis, but is quite distinct. Halictus brazieri sp. n. cf . Length 11 mm. or slightly over; shining black, with scanty dull white pubescence; hair on inner side of basitarsi and fringe of caudal rima pale golden; outer side of tibiae with hair partly dark fuscous; head ordinary, only moderately broad; mandibles black, dark red at extreme tip; elypeus shining, with strong not dense punctures, no median groove; front dull in middle, glistening at sides; antennae pure black; mesothorax shining, with strong rather sparse punctures of practically uniform size; scutellum with very minute punctures, entirely different from those of mesothorax; mesopleura coarsely striate; area of metathorax short, with fine regular cross-striae, the basal middle with irregular rugae; sides of area posteriorly bounded by conspicuous elevations; posterior truncation strongly obliquely striate; hind spurs simple (micro- scopically very briefly serrulate); tegula? black, a little reddish in middle: wings slightly brownish, stigma dull ferruginous, nervures fuscous, outer r. n. and t. c. much weakened; first r. n. joining end of second s. m.; abdomen shining, with extremely minute punctur no hair-bands or patches, but third and fourth segments, and base of first, with thin pale glittering hair; hair at apex fuscous; venter with short Miff hair. The wings are unusually short. 368 PROCEEDINGS OF THE ACADEMY OF [May, Hob.— Yallingup, S. W. Australia, Nov., 1913 (R. E. Turner; Brit. Museum). Superficially exactly like Parasphecodes noachinus Ckll., but the stigma is more obtuse at end, marginal cell shorter, abdomen much more finely punctured, and basal nervure more strongly arched. The punctureless apical area on first abdominal segment is extremely narrow, less than half as wide as that of P. noachinus. These two bees are really congeneric, the genera Parasphecodes and Halictus practically meeting at this point. This and the next are named after Australian naturalists. Halictus spenceri sp. n. cf. Length slightly over 8 mm.; black, rather robust, with thin white hair, faintly ochreous-tinted on head and on thorax above; abdomen without bands or patches, but a little pale hair at bases of second and third segments, and ventral segments with broad dense bands of white hair; face broad, eyes subemarginate ; mandibles black; clypeus with a low-triangular creamy white patch, its surface punctured, and with no median groove; antenna? long, black? rlagellum moniliform; mesothorax shining (dull in front), with small punctures; scutellum very finely punctured, not bigibbous; area of metathorax semilunar, feebly sculptured, roughened basally with fine rugae, the apical part microscopically areolate; mesopleura not striate; tegulse piceous with a rufous spot, the anterior lateral margin pallid; wings dusky, stigma dark fuscous, nervures light fuscous; first r. n. joining second s. m. at end; third s. m. broader than second; abdomen shining, with very fine obscure punctures; apex with a large, broad, rounded, bright ferruginous plate. Front dull. Legs black, with pale hair. Hab— Yallingup, S. W. Australia, Sept. 14-Oct, 31, 1913. (R. E. Turner; Brit. Museum.) I thought at first that this might be the male of H. brazieri, but the structure is too different. It belongs to the group of H. cambagei Ckll., where it is easily distinguished by its large size. Some specimens are only about 7 mm. long. Halictus tannaensis sp. n. 9. Length a little over 7 mm., robust; head broad-oval, dark bluish-green, the clypeus and supraclypeal area stained with crimson; face, front and cheeks with thin dull white hair, vertex with fuscous hair; mandibles black, obscurely reddish at apex; clypeus sparsely punctured; front dull, very finely striate; head truncate posteriorly, the occipital margin abrupt; antenna? dark, nagellum with only the faintest red tint toward end; antennal joints 2 to 5 measuring (length) in microns 128, 128, 144 and 176 respectively; mesothorax and 1910.] NATURAL SCIENCES OF PHILADELPHIA. 369 scutolluin dullish, yellowish-green, with slighl crimson tints, very finely but not extremely densely punctured; dorsum of thorax with thin brownish-tinted hair: area of metathorax semilunar, well- defined, with regular straight plicae, on the basal half connected by minute cross-ridges; posterior truncation very hairy; legs black, not metallic, last joint of tarsi red; hair of legs black on outer side; hind femora slender, arched beneath, with a long curled pale scopa; inner side of tarsi with light ferruginous hair; hind spur with very long spines; teguhv fuscous with a ferruginous spot; wings strongly dusky, stigma rufofuscous, nervures fuscous, outer r. n. and t. c. much weak- ened; second and third s. m. cells about equal, and together not as large as first; first r. n. joining third s. m. near base, third discoidal cell narrowed above; abdomen broad, shining, impunctate, obscurely bluish-green, hair at apex reddish, caudal plate narrow, exposed, venter with a scopa of long white hairs. Hah. — Tanna Island, Xew Hebrides, June, 1900 (J. J. Walker; Brit. Museum). Allied to H. perpessicus Kohl, from Samoa, but easily distinguished by the longer, more oval head. Also allied to H. saffordi Ckll., from Guam, but the area of metathorax is quite different. Halictus epiensis sp. n. 9. Length a little over 6.5 mm.; superficially and structurally like H. to nnaensis, but easily distinguished by the following character- : mesothorax and scutellum narrower, more closely punctured, rich blue-green; area of metathorax larger, more finely sculptured, the very delicate rugae joined by cross-rugse, producing a fine reticulation, while apically delicate striae pass obliquely to each side of a fine median plica; wings very dark (venation as in H. tannaensis). The third antennal joint is very short, broader than long, a little shorter than the second or fourth. Hab.— Ringdove Bay, Epi Island, Xew Hebrides, July 21. 1900. (J. J. Walker; Brit. Museum.) Halictus pachycephalia sp. n. o71. Length about 6 mm., rather robust, with very large broad head (wider than thorax) and short abdomen; black, with dull whit.' hair, the legs ferruginous, the coxae, trochanters, and basal half < it- more of femora black, anterior femora black behind except at extreme apex; spurs pale ferruginous. Head about 2.17 mm. wide; mandi- bles pale yellow with the apex broadly black; labrum pallid; clypeus with a pale yellow apical band, broad in middle; white hair of fai 370 PROCEEDINGS OF THE ACADEMY OF [May, not concealing the shining surface; front dull except at sides, densely punctured, with oblique (mainly transverse) wavy rugae above the antenna?; a small shining space on each side of middle ocellus anteriorly; antenna? slender, moderately long, the flagellum dull reddish; length of antennal joints in microns, (1. = scape), 560, (2.) 128, (3.) 144, (4.) 240; mesothorax polished and shining, sparsely and finely punctured, median and parapsidal grooves distinct ; scutel- lum shining, the disc impunctate; legs with pale hair; basitarsi cream-colored at base, and a cream-colored spot at base of hind femora; tegula? rufotestaceous with a pale yellowish mark; wings hyaline, stigma and nervures ferruginous; stigma large; first r. n. meeting second t. c; third s. m. large, broader above than second; hind wing with four spines on costa much before origin of radial vein, a group of four large hooks (close together) beginning at origin of radial vein, and a group of three hooks a short distance beyond; abdomen shining, very finely punctured, with a thin pruinose pubes- cence, but no bands or spots; apex with white hair; a broad, rounded, very obtuse red apical plate; venter not very hairy. Hab— Yarrawin, New South Wales, 1914. (W. W. Froggatt, 250.) Related to H. spenceri, but easily separated by the color of the legs. The red stigma and other characters separate it from H. dolichocerus and H. hamatopus. Halictus dolichocerus sp. n. cf . Length 5 to 6 mm., rather robust, with short broad abdomen; head large, but not conspicuously so as in H. pachycephalias; pubes- cence rather short, dull white; lateral bases of abdominal segments 2 to 4 with cuneiform patches of white tomentum; legs bright ferruginous, blackened at base, anterior femora black except at apex, middle and hind pair with less black; tibia? with a blackish patch. Eyes rather strongly converging below; clypeus with a broad apical band, which is angularly produced above in middle; face, and whole of front, with rather dense white hair, partly concealing surface of front; front dull; supraclypeal area polished and shining; antenna? extremely long, dark, the fourth joint bright or obscure red beneath; flagellum strongly crenulate beneath; mesothorax polished, finely and not densely punctured; scutellum brilliantly shining, middle of disc impunctate; area of metathorax crescentic, with weak plica?; margin of area polished; tegula? rufotestaceous; wings hyaline, nervures and stigma sepia; second s. m. variable; first r. n. joining second t. c. or entering basal corner of third s. m.; third s. m. very large, quadrate, sometimes longer than high; abdomen shining, very 1916.] NATURAL SCIENCES OF PHILADELPHIA. 371 finely punctured, apical half of second segment punctured, not lineolate. Hab. — Type from Yarrawin, X. S. \\\, (Froggatt 225). AJso two from Brewarrina, N. S. W., 1914 (Froggatt). The basitarsi may be distinctly yellowish. By the general form and very long antennae this resembles //. hamatojms Ckll., but it is readily distinguished by the shining mesothorax. Halictus supralucens sp. n. 9. Length about 6.5 mm.; of ordinary form, black, with rather scanty white hair; dense bands of pure-white tomentum at extreme bases of second to fourth segments, the central part on second hidden by overlapping first segment; legs very dark brown, with pale hair. Head broad; mandibles black, with a faint red subapical spot; clypeus shining, with irregular strong punctures; front dull except at sides, finely striate; antennae dark, flagellum with a very obscure reddish tint beneath; mesothorax shining, with irregular large and small punctures, the disc not lineolate or reticulate; parapsidal grooves deeply impressed; scutellum flattened, depressed in middle, strongly polished, almost entirely impunctate; area of metathorax large, poorly defined, appearing rugose from a fine raised reticulation, but the apical part smooth and shining; hind basitarsi with apical brush brilliant orange-ferruginous; tegulse rather dark chestnut-red; wings dusky, nervures brownish; stigma large, dull amber-color; second s. m. large; first r. n. meeting second t. c. or joining apical corner of second s. m.; abdomen shining at base, duller beyond, with extremely fine punctures; caudal rima fringed with brown hair; venter with white hair, not forming a curled scopa. Hab.— Kalamunda, S. W. Australia, Feb. 9-28, and at 850 ft., March 1-11, 1914. (R. E. Turner; Brit. Museum.) Near H. mediopolitus Ckll., but sculpture of mesothorax entirely different. Easily known from H. orbatus Sm. by the polished scutellum. Halictus demissus sp. n. 9 . Length nearly 5.5 mm.; black, with the mesothorax shining green, polished, with sparse punctures of different sizes, the parapsidal grooves very distinct; scutellum also polished, but not green; pubes- cence scanty, dull white, the abdomeD without hair-bands or spot-: mandibles chestnui red except basally; clypeus shining, front dull and granular; flagellum entirely dark; area of metathorax large, with delicate but very distinct radiating stria1; legs black; wings hyaline, nervures and the very large stigma sepia; firsl r. n. joining 372 PROCEEDINGS OF THE ACADEMY OF [May, second s. m. a little before end; outer r. n. and t. c. very weak; third s. m. very short; abdomen polished, shining, venter with a scopa of long curled hairs. Microscopical characters: front densely covered with elongated punctures running into striae; surface of mesothorax very delicately reticulated; area of metathorax minutely reticulated between the ridges ; hind spur with four obtuse spines. Hob. — Launceston, Tasmania, Nov. 1, 1914, 2 9 (F. M. Littler, 2,699). Related to H. hwnilis Sm., but distinguished by the dark legs and striate area of metathorax. Halictus forticornis sp. n. cf . Length about 4 mm.; black, with very scanty pale pubes- cence, no bands or patches on abdomen; head broad, eyes converging below; mandibles pale yellow, ferruginous at apex; lower half of clypeus pale yellow; middle of face shining, front dull; cheeks unarmed; scape black; flagellum very long, thick, submoniliform, light orange-ferruginous beneath ; mesothorax and scutellum shining, smooth and polished; area of metathorax roughened basally, but with a broad shining rim; legs black, with knees, apices of tibiae, and anterior tibiae in front, ferruginous; tarsi very pale reddish approaching cream-color; tegulae dark ferruginous; wings hyaline, nervures and the large stigma testaceous; first r. n. joining apical corner of second s. m. ; outer r. n. and t. c. extremely weak; abdomen short, shining; sides of venter testaceous. Microscopical characters: front striate; mesothorax with sparse minute punctures, the surface of the disc not lineolate or reticulate; first two abdominal segments distinctly but minutely punctured, the depressed apical part of second transversely lineolate. Hob.— Kalamunda, S. W. Australia, Feb. 9-28, 1914 (R. E. Turner; Brit. Museum). Very close to H. cyclognathus Ckll., but head smaller, antennae longer, and area of metathorax different. Halictus imitans Ckll. George Town, Tasmania, Nov. 15, 1914 (Littler). New to Tas- mania. On Nov. 29 Mr. Littler took H. lanarius Sm. at George Town. Halictus seductus Ckll. Bridport, Tasmania, Oct. 26-30, 1913 (Littler). New to Tasmania. Halictus semipolitus expulsus subsp. d. 9 . Flagellum black (red at end in typical semipolitus) ; tegulse piceous or more or less reddish. 19H).] NATURAL SCIENCES OF PHILADELPHIA. 373 Hab. — Georgetown, Tasmania, Nov. 15 and 29, l'.»l l (F. M. Littler.) Halictus macrops sp o. cf . Length 5 nun. or a little over; black, robust, looking like a female, the head very large and broad, the antennae i which are entirely dark) not very long; hair of head and thorax long, dull white, slightly creamy on thorax above; on abdomen the hair is thin and rather long, rather abundant on apical segments, but not forming bands or patches; apical plate of abdomen very broad, piceous. Mandibles dark red apically; lower margin of clypeus without yellow; hair of face abundant, but not concealing shining surface of clypeus; front dull; mesothorax polished, with fine scattered punctures; scutellum dullish; area of metathorax narrowly crescentic, roughened, with minute short plicae; legs black, with white hair; tegula- rufo-fuscous, darkened in front; wings hyaline, stigma and nervures dark reddish, outer r. n. and t. c. evanescent; first r. n. meeting second t. c; second s. m. very narrow, third large, about twice the size of second; abdomen shining, with very minute punctures, hind margins of segments more or less pallid. Microscopical characters: clypeus distinctly but sparsely punctured, the punctures emitting long- plumose hairs; front densely punctured, in the middle also striate, the ridges between the punctures emphasized; mesothorax distinctly but not at all densely punctured, the surface of the disc not reticulate or lineolate; punctures of scutellum smaller than those of mesothorax; first abdominal segment and basal half of second well though minutely punctured, apical half of second transversely lineolate. Hab. — Launceston, Tasmania. (F. M. Littler.) This may be compared with H. niveifrons Ckll., from which it is easily known by the broad face. Halictus lanariellus sp. n. 9. Length about 8 mm., the abdomen large; black, with dull white hair; bases of abdominal segments 2 to 4 with broad bands of white tomentum, having a faint creamy tint, especially at sides of 2, where it is very dense, the band on 4 so broad as to occupy more than half the segment; legs black, the tarsi ferruginous at apex. Head broad; mandibles obscurely reddish apically; clypeus and supra- clypeal area shining and sparsely punctured; front extremely densely punctured, not striate; antennae dark, flagellum faintly reddish below at apex; mesothorax shining, strongly and rather closely punc- tured; scutellum shining, depressed and punctured in middle, but 374 PROCEEDINGS OF THE ACADEMY OF [May, the disc on either side impunctate; area of metathorax crescentic, with fine plicse which in the middle run into a reticulation, giving a subrugose effect under a lens; hind femora and trochanters with long curled floccus; hind spur simple; tegulae dark rufous; wings hyaline, stigma and nervures ferruginous; second s. m. very broad, receiving first r. n. at apex; abdomen shining where not covered with tomentum, extremely finely punctured; venter with long white hair, not forming a curled scopa. Hab.— Yarrawin, N. S. W. (Froggatt, 233). Close to H. lanarius Sm., but smaller and more shining. Halictus confusellus sp. n. .9. Length about 7 mm.; black, with dull white hair; lateral bases of second and third abdominal segments with cuneiform patches of dense white tomentum, the apical part of abdomen also hairy, but not densely; legs black. Mandibles black, faintly reddish subapically; clypeus and supraclypeal area shining, sparsely punc- tured; front densely punctured; antennae black; mesothorax and scutellum shining, but very distinctly and quite closely punctured all over; area of metathorax crescentic, with fine radiating plicae; hind spur peculiar, with a very broad rather short lamina, and a low keel-like one beyond, the latter slightly inclined to be double; tegulae rufopiceous; wings slightly dusky; nervures fuscous, stigma dull ferruginous; outer r. n. and t. c. evanescent; first r. n. reaching extreme apex of second s. m.; third s. m. much' broader above than second; abdomen shining, very finely punctured. Hab. — Launceston, Tasmania (F. M. Littler). Known from H. imitans Ckll. by the ferruginous stigma and shorter area of metathorax. The following key will facilitate the separation of a number of species of Halictus discussed above: Mesothorax green 1. Mesothorax black; abdomen black 4. 1. Small species, with red (or mainly red) tibia? 2. Larger species, with dark tibiae 3. 2. Green of thorax very bright urbanus Sm. Green of thorax obscure mundulus Ckll. 3. Mesothorax shining, sparsely punctured demissus Ckll. Mesothorax dull, much more closely punctured subinclinans Ckll. 4. Males 5. Females 10. 5. Lower margin of clypeus not yellow macrops Ckll. Lower margin of clypeus yellow or cream-color 6. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 375 6. Very small, less than ."> mm. long, tarsi yellowish farticornis Ckll. Larger, at least over 5 mm. long 7. 7. Tarsi black spenceri Ckll. Tarsi red or yellow 8. 8. Stigma ferruginous; head broad and massive....pachycephalus Ckll. Stigma fuscous 9. 9. Mesothorax shining dolichocerus Ckll. Mesothorax dull hcematopus Ckll. 10. Small, hardly 5.5 mm. long semipolitus expulsus Ckll. Larger .11. 11. Disc of mesothorax with scattered punctures of different size, supralucens Ckll. Disc of mesothorax well punctured, the punctures uniform 12. 12. Fourth abdominal segment, except broad apical margin, densely covered with pale felt-like hair lanariellus Ckll Fourth segment not so 13. 13. Hind margins of abdominal segments reddened; area of meta- thorax with irregular sculpture pulvitedus Ckll. Hind margins of abdominal segments black; area of metathorax with fine definite longitudinal plicse 1-4. 14. Stigma ferruginous; area of metathorax shorter confusi llus Ckll. Stigma piceous; area of metathorax longer imitans Ckll. 376 PROCEEDINGS OF THE ACADEMY OF [May, A NEW SPECIES OF ONCHIDIOPSIS FROM BERING SEA. BY WILLIAM H. DALL. The 'genus Onchidiopsis Bergh (1853) was proposed for certain Arctic mollusks related to Velutina and possessing an internal nearly laminar shell. The minor characters of the few species known are in many respects different but their combinations are so intermixed that it is difficult to assign to the differences more than specific value. However the peculiarities of the present species are such that I venture to separate the genus into two sections, as follows : Genus ONCHIDIOPSIS Bergh, 1S53. Section ONCHIDIOPSIS, type 0. gronlandica Bergh. Adult animal with an impervious notseum. Section ATLANTOLIMAX, type 0. (A.) hannai Dall. Adult with a large dorsal foramen in the notseum. Onchidiopsis hannai n. sp. Animal, after preservation in spirits, of a yellowish white color except on the sides of the foot and on the osphradium. The foot is muscular, broad, tapering and bluntly pointed behind, extending about one-third of its length behind the hinder margin of the no- tseum even when contracted; the front edge duplex, auriculate at the anterior lateral angles; proboscis entirely retractile within a transverse slit, below the short stout tentacles; eyes black, distinct, completely imbedded in and a little above the not perceptibly swollen bases of the tentacles, on their outer sides; verge situated behind the right tentacle, large, twisted, at first stout and subcylindrical, then deeply constricted; then compressed and expanded with a conical papilla at the outer corner of the expansion1 much as in 0. corys Balch. The sides of the foot are radially corrugated, the convex folds sometimes more or less granulose; above the corrugated area and in the pedal sulcus below the edge of the mantle the surface is smooth 1 In Balch's figure of 0. corys this papilla is shown at the inner corner of the expansion, a difference which is probably due to twisting. Cf. Proc. U. S. Nat. Museum, No. 1,761, pi. 22, fig. 1. 1916.] NATURAL .SCIENCES OF PHILADELPHIA. 377 and white, though the corrugations arc more or less tinged with slate color. The visceral hump i^ enormous, subglobular, shorter than the foot, height above the sole 52 mm.; above the sulcus between mantle-edge and foot 40 mm.; longitudinal diameter 42 mm.; transverse diameter 37 mm. The hum]) is largely covered by a thick, obscurely pustulous, almost coriaceous layer (the notaeum) beneath which is a thin, transparent but quite tough mantle which in spirits expands below the basal edge of the not a 'inn above the pedal sulcus especially in front (though not as much as in 0. corys), like a mass of bubbles, with a hardly perceptible sinus on either side forming an incurrent and an exhalent channel, which however does not affect the margin of the notaeum, the latter being entire except for a slight incurvation in the median line in front. The summit of the notseum (in spirits) exhibits an ovoid foramen about 30 mm. long by 24 mm. wide, through which the shell, covered by the excessively thin transparent mantle, is partially visible. There is a transverse slit-like opening between the mantle and the pedal sulcus, directly behind the head, in which the osphradium, ctenidium and excretory outlets are situated. The osphradium is of a greenish tint, with darker margins. The gill is translucent white. In the former the filaments are single and elongated on either side of the stalk, not short and double as in 0. corys. The ctenidium has a single row of long, triangular, not auriculate lamellae much as in that species. The jaw much resembles that of 0. corys, but the radula was so deeply retracted that it was thought best not to break up the unique specimen by cutting to extract it. The base of the arc of the shell measures 40 mm. long by 32 mm. wide. It has much the shape of the bowl of a deep oval ladle and it^ depth is about 15 mm. when in normal position. Its structure i- concentric, not in circles but in a rounded-quadrate fashion. On the edge of the left side behind is a knot-like nucleus. On the inner surface near this nucleus and extending for a length of about 12 mm. away from it are two elevated straight ridges, which at half then- length from the nucleus join to form a single stronger ridge which gradually diminishes and becomes obsolete on the inner surface of the disk. The appearance of these ridges suggests that if the shell was spirally coiled they would form a columella. The outer surface of the shell, to which the mantle adheres tenaciously, is smooth, but undulated by more or less irregularly disposed concentric wrinkles. It is attached to the body only by a small area at the edge near the 378 PKOCEEDINGS OF THE ACADEMY OF [May, nucleus. There is no indication of a periostracum, and the carti- laginous shell is nearly transparent. The specimen was collected on the beach of St. Paul Island, Bering Sea, after a severe storm, December 5, 1914, by Mr. G. Dallas Hanna of the Bureau of Fisheries, in whose honor it is named. U. S. Nat. Mus. Cat. No. 215,162. This species differs from 0. corys by its widely foraminate notseum, its much larger visceral hump, its single instead of double osphradial lamella, and the character of its shell. 0. gronlandica, glacialis and pacifica have an imperforate notseum. 0. gronlandica has a low visceral hump and entirely different form of verge. 0. glacialis has a proportionately much shorter and posteriorly pointed foot, lower hump and different type of verge, and 0. pacifica shows much the same differences. The disposition to "lump" together specifically animals of this genus in spite of minor differences, is responsible for much confusion. The differences of more than specific rank run parallel to those in Velutina, where some species have the shell entirely covered by the notseum and others have it more or less exposed. It has been suggested that all species have the shell covered in the young, but the specimens of all ages collected by me do not confirm this sup- position. While the edges of the shell and its concave surface, except for the portion near the nucleus, are free from the visceral hump below, it is nevertheless completely covered by an extremely thin layer of tough tissue which can be separated from the shell only with difficulty, usually coming off in small strips. This tissue I assume to be an extension of the mantle as it has none of the characteristics of a periostracum. The entrance of the vagina could not be made out. It required for its demonstration more extensive dissection than was thought advisable for the unique specimen. The animal is pre- sumably hermaphrodite, like the other species of the genus which have been anatomically examined. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 379 THE ZOOLOGICAL POSITION OF THE SARCOSPORIDIA. BY HOWARD CRAWLEY. In a paper recently published by* the present author (Crawley, 1916), evidence was given to show that the spores of Sarcocystis muris are sexually differentiated. This evidence was based upon the findings in the intestinal cells of mice to which the spores had been fed. It is, however, quite possible that a careful study of accurately fixed and stained spores taken directly from the cysts would reveal characters serving to differentiate the males and females. Certain authors, for instance Fantham (1913), in the case of Sarcocystis colli, speak of two kinds of spores, but nothing of the sort has as yet been demonstrated in the case of Sarcocystis muris. Nevertheless, as already stated, these spores are males and females and within the intestinal cells of the mouse they quickly develop along their respective lines. This evolution is completed in from 9 to 18 hours, after which fertilization takes place. My own studies shed no light upon later events. The fertilized female or zygote can be found, sometimes within the epithelial cells, sometimes in the subepithelial tissues, in mice killed one or two days after inoculation. But as yet I have not been able to find the parasite in mice killed at longer intervals than this after feeding. Erdmann (1914) describes and figures what are apparently the multiplication stages of a parasitic protozoan in the intestinal cells and tissues of mice killed some days after the ingestion of sarcos- poridian spores. The precautions taken by Erdmann seem absolutely to preclude infections with any other protozoan. Consequently, as the case now stands, it seems entirely reasonable to look upon these multiplication stages as derived from the zygotes. According to Negre (1907) the feces of mice that have been inocu- lated by feeding the usual cysts contain a stage of the parasite capable of producing the infection if fed to other mice. This is present in the feces from the fifteenth to the sixtieth day alter inocula- tion. It is evidently a resistant encysted stage, since it maintains its vitality for 30 days in the dried feces, and is capable of resisting a considerable degree of heat. When mice are inoculated with this stage, both the time required for the parasites to appear in the 26 380 PROCEEDINGS OF THE ACADEMY OF [June. muscles and the percentage of positive cases are the same as when the mice are fed with the stages occurring in the muscles. Negre, however, was not able to detect this element in the feces and although it seems as if it must be present in the intestinal tissues for a long- time after inoculation, it has never been seen. Hence the evidence for its existence, while entirely satisfactory, is wholly indirect. Negre's experiments have been repeated at the Zoological Labora- tory of the Bureau of Animal Industry, and his results confirmed. The impression is, however, that the infections resulting from i noculation with the fecal stage are heavier than those obtained from feeding infected muscle. Microscopical examination of the spores obtained in this manner show them to be precisely the same as those resulting from the other mode of infection. As we have seen, Erdmann describes multiplication stages as occurring in the intestine some days after inoculation. The parasite then disappears to reappear at about the forty-fifth day in the muscles. Several authors have endeavored to trace the history of the muscle stages, but of the several accounts the most convincing is that of Negri (1910). This author worked with the white rat, but the parasites of the rat and mouse seem to be identical and there is no reason to suppose that the development of one would be any different from that of the other. The smallest and hence, doubtless, the youngest stage found by Negri was an elongated body, about 25 n long. It was found in a rat killed 50 days after feeding. It showed a delicate bounding membrane and was rather indistinctly divided into a number of oval elements, each with a central differentiation. This no doubt repre- sented the nucleus. Negri designates these bodies as sporoblasts. In somewhat larger cysts the picture is clearer, the oval sporoblasts being completely individualized, and each shows a very distinct nucleus. From this point on development appears to follow very simple lines. The sporoblasts divide repeatedly by bi-partition, each daughter cell coming to assume the oval form of the mother cell. The parasite itself, the so-called cyst, becomes larger, but this increase in size is due merely to an increase in the number of the sporoblasts, which do not themselves become larger. The entire mass remains separated from the host tissue by the same kind of a delicate mem- brane. Matters proceed in this way until the cysts, according to Negri, have attained a length of some 600 p-. From this time on, however, 1916.] NATURAL SCIENCES OF PHILADELPHIA. the two daughter cells arising from the division of a sporo lasl do not, always take on the oval form of the mother cell, but each r< tai the form it had at the momenl of division and does no1 again divide. The division of the sporoblast having been longitudinal, the form of the daughter cells is that of a banana and they are, in fact, the spori The production of the spores in this way is initiated in the central part of the cyst. At the outset of this new line of development, the cysts will contain many sporoblasts and few spores and there is no doubt that the production of both spores and sporoblasts may take place simultaneously in different or even the same parts of the same cyst. Eventually, however, the divisions of the sporoblasts produce only spores which finally come to be the only elements present within the cysts. Bertram (1892) describes very early stages of the evolution of Sarcocystis tenella in the muscles of the sheep. Several of his original figures have been reproduced in most of the general works on the parasitic Protozoa, and doubtless are familiar to all students of thes< organisms. Of these, Bertram's figure 22, reproduced by Doflein (1911) as figure 891 C, page 922, represents an element 47 /-* long by 6 /j wide. We have here what appears to be a solid body indistinctly marked out into small round or oval elements, each with a nucleus, It is strikingly like the smallest stage of Sarcocystis muris a- figured and described by Negri. Bertram also figures somewhat larger stages of the muscle phase of Sarcocystis tenella, and in these, reproduced by Doflein (1911) as figures 891 B and D, page 922, the so-called cysts are more or less completely differentiated into rounded or oval nucleated cells, the sporoblasts. Since the Sarcosporidia are always classified as Neosporidia, it has been tacitly assumed that the earliest stage in the muscles must be an organism in which growth and spore formation take place coinci- dently. The very smallest stages figured and described by Negri and Bertram are capable of being interpreted in this way, since they appear to consist of bodies of some size, indistinctly divided into rounded or oval nucleated elements. Inasmuch, however, as these bodies occur embedded in the muscular tissues of their host-, p by no means easy to get clear-cut pictures of them, and it is whol Im- possible that the rather indefinite appearances figured by these two authors may be due merely to the difficulty of differentiating the sporoblasts from the surrounding host tissues. In consequence, it is not at all impossible that these earliest stages of Bertram and 382 PROCEEDINGS OF THE ACADEMY OF [June, Negri may be only groups of sporoblasts, and it is in harmony with this opinion that in both cases these authors figure slightly later stages of the parasite in which the sporoblasts are completely individualized. More direct evidence, however, is furnished by some material which has recently been examined by the present author. This, from the heart of a sheep, appears to show that at least in the case of Sar- cocystis tenella, the sarcosporidian cyst originates from a single cell. This conclusion is based upon the discovery of a single partly divided sporoblast, lying in a minute cavity within a cell of the heart. Divi- sion had progressed to the point where the two daughter cells were wholly distinct, but still in intimate contact. The next stage found consisted of a group of eight sporoblasts, also lying in a cavity within a heart cell. All of these eight sporoblasts were more or less com- pletely individualized. In addition to these very small stages, larger groups of sporoblasts were found, up to cysts of over 100 p- long. But in all cases the elements composing the groups were obviously the same as the sporoblasts of Negri and Bertram. Thus the data furnished by Bertram, Negri, and the present author are entirely consistent amongst themselves, and are mutually confirmatory and supplementary. For although the earliest known stage of S. muris yet discovered consists of a number of cells, about six or seven, judging from Negri's figure, we can hardly ascribe to it a mode of development different from that of S. tenella. Assuming then that these data are accurate, a certain interesting conclusion seems to follow. This conclusion is in effect that the muscle stage of Sarcocystis muris is not an individual, but a congeries or colony of individuals. In other words, the unit is not the cyst or Miescher's tube, but the sporoblast itself. Assuming that this is true, the life history of Sarcocystis muris would be as follows: The ingested spores gain the epithelium of the intestine and develop into the macrogametes and microgametes. The latter fertilize the former and produce the zygotes. By endo- genous multiplication the zygotes produce a number of minute elements. There is here a gap in the life history. It is evident that two divergent lines are followed since, as we have seen, some form of the parasite appears in the feces from the fifteenth to the sixtieth day. It is therefore impossible to say whether the multi- plication products described by Erdmann are those destined to invade the muscles or to infect the feces. But whatever happens, 1916.] NATURAL SCIENCES OF PHILADELPHIA. 383 it is evident that at the end of several weeks some form of the parasite invades the muscles. This is either the sporobhist itself or immediate forerunner, which may be the zygote or some elemenl derived from the zygote. In any event, at a certain point in the evolutionary history, the muscle cells come to harbor individual sporoblasts. These divide many times by bi-partition, but eventually the products of these divisions are no longer sporoblasts, but spores. It may incidentally be noted that unless its development be interfered with, each sporo- blast will presumably produce a cyst. It will be of interest to compare the several stages of the life history of Sarcocystis muris with those of an ideal member of the Coccidiomorpha. The sarcosporidian "spore" develops directly into the sexual stages, the macrogametes and microgametes. These copulate and produce the zygotes. In the coccidiomorphan, the merozoites pro- duced at the end of schizogony follow an identical line of development. The sarcosporidian zygote divides into a number of small bodies, the further history of which is unknown. The coccidian zygote ultimately produces the sporozoites, although the details whereby this end is gained are subject to great variation. In the sarcosporidian, some product of the zygote ultimately finds its way into the muscle cells, and produces the colony of sporoblasts. In the Coccidiomorpha, the sporozoites eventually find their way into their appropriate habitats, which are always cells, and grow into trophozoites. In the sarcosporidian, the sporoblasts divide a number of times by bi-partition, after which spores are produced and division cease-. These spores, in order to develop further, must gain the alimentary canal of another host in which they will evolve into the sexual stages. In the Coccidiomorpha, the trophozoites divide into merozoites These grow into trophozoites, which again divide into merozoite- and so on for an indefinite number of generations. Eventually, however, the merozoites develop, not into trophozoites, but into the sexual forms. It will next be in order to see what conclusions may be drawn from the data given above. In so doing, it will be convenient to divide the sarcosporidian life history into three portions, namely, the sexual development which takes place in the intestinal .'pithelium; the stage which follows this; and finally the stage which occurs in the muscles. 384 PROCEEDINGS OF THE ACADEMY OF [June, In so far as the first of these stages is concerned, that is, the evolu- tion of the microgametes and macrogametes, the parallel between sarcosporidian and coccidiomorphan is exact. In the second stage, the gaps in our knowledge of the course of events in the Sarcosporidia prevents as precise a comparison. We do not know what happens between the time the parasite leaves the epithelium and the time it invades the muscle, nor has the stage which appears in the feces ever been seen. Nevertheless, the course of events in the two cases must be more or less similar. For in both, the zygote divides into a number of small elements which serve to carry the infection either to other hosts or to other parts of the same host. In the Coccidiomorpha, there is typically a first division into spores, the protoplasm of which secondarily divides into sporo- zoites. In the sarcosporidian, it is in evidence that the zygote divides into small elements, the further history of which is not known. But in any event, it must be some product of the zygote which on the one hand invades the muscles and on the other develops into the encysted fecal stage. It is conceivable that it is an encysted zygote which infects the feces, but we do not know. In the third stage, the course of events differs in detail in the two groups of animals, but the end results are the same, since in both there are produced a large number of elements destined to evolve into the sexual stages. In the Coccidiomorpha, there is extensive growth, followed by multiple division, this cycle being repeated an indefinite number of times. In the Sarcosporidia, there is an indefin- ite number of bi-partitions alternating with only enough growth to restore the element to its original size. In the one case, the Sar- cosporidia, multiplicative energy is continuous, while in the other, the Coccidiomorpha, it is periodic, but this difference is not essential. We may next endeavor to homologize the several stages in the life history of Sarcocystis muris with those of the Coccidiomorpha. In the first place, it is entirely evident that the sarcosporidian "spore" is the homologue of the coccidiomorphan merozoite. The sexual stages are alike. The multiplication products of the sarcosporidian zygote are presumably the homologues of either the spores or sporo- zoites of the Coccidiomorpha. The sporoblast is not so easy to place. It may correspond to either the sporozoite or the trophozoite of the Coccidiomorpha. A knowledge of its derivation is necessary before this point can be determined. Since, however, the sporoblasts are all of much the same size, whether occurring singly or within groups, the distinction here between sporozoite and trophozoite would be largely a matter of terms. 1'.'16.] NATURAL SCIENCES OF PHILADELPHIA. Attention may also be called to the homology of the sarcosporidian muscle stage with the entire schizogonous cycle of the Coccidio- morpha. In the latter, the products of schizogony are set free and are enabled to invade new regions of the host. In the former, a tissue reaction on the part of the host confines them in the region originally invade* 1. If the line of reasoning developed above he sound, it seems to follow that the Sarcosporidia are not Xeosporidia, but Telosporidia, and moreover Telosporidia which obviously belongs to the Coccidio- morpha. In the discussion given above, the various characters of the Sarcosporidia and Coccidiomorpha were compared, the result showing both resemblances and differences. But as will be pointed out below, the characters of taxonomic value were those wherein tin two groups were alike, whereas the differences had to do with charac- ters not used in classification. Before, however, giving the reasons for regarding the Sarcosporidia to be Telosporidia, it may be advisable to point out the difficulties in the way of regarding them as Neosporidia. This group, which constitutes a subclass of the Sporozoa, is defined by Doflein (1911), p. 701 as composed of Sporozoa which may sporulate during the entire vegetative period. Thus, a typical neosporidian will consist of a multinucleate organ- ism, in the cytoplasm of which there will be a number of spores in various stages of evolution. It has apparently always been assumed that something of the sort takes place in the Sarcosporidia; that the cyst originates from a multinucleate element which only secondarily becomes multicellular. As we have seen, however, the cyst is com- posed of separate cells from the very outset. Hence there appears to be no good reason for regarding the Sarcosporidia as Neosporidia. We are now in position to suggest, at least tentatively, a new classification for the Sporozoa. This class is divided into two subclasses, the Telosporidia and Neosporidia. In the first, division into multiplicative elements takes place only at the end of the vegetative period. In the second, as we have seen, growth and spore formation take place simultaneously. Following Doflein, the Telosporidia may be divided into two orders, as follows : 1. Coccidiomorpha: Vegetative stage continuously intracellular. Fertilization anisogamous. Sexual generation continuously or transiently intracellular. 386 PROCEEDINGS OF THE ACADEMY OF [June, 2. Gregarinida: Vegetative stage, if intracellular at all, only so at first; adults always extracellular. Fertilization anisogamous or isogamous. Fertilized forms always continuously extracellular. In the Sarcosporidia, the vegetative stage is intracellular, becoming extracellular only through the destruction of the cells originally occupied. Fertilization is anisogamous and the sexual generation is typically intracellular, becoming extracellular only by accident. Evidently, then, so far as the main characters go, those of the Sar- cosporidia are identical with those of the Coccidiomorpha. It therefore seems allowable to place them in this group. Doflein divides the order Coccidiomorpha into suborders, as follows: 1. Coccidia: Sporozoites inclosed in spores. Zygotes nonmotile, mostly intracellular. 2. Haemosporidia: Sporozoites always free. Zygote, as the ookinete, motile, and migrating into new cells. Judging from Erdmann's contribution, the sarcosporidian zygote does not produce spores, but divides directly into what are possibly sporozoites. This would place the Sarcosporidia closer to the Haemosporidia than to the Coccidia. But the fact that the zygote is apparently nonmotile indicates that the relationship with the Coccidia is the closer. Obviously, however, the Sarcosporidia are neither Coccidia nor Haemosporidia, but our very scanty knowledge regarding this phase of their life history prevents us from defining them in the terms used by Doflein for the two other groups. For the present, it seems best merely to consider them to be one of three suborders making up the Coccidiomorpha. The Sporozoa may then be reclassified as follows: Class Sporozoa. Subclass I, Telosporidia. Order 1, Coccidiomorpha. Suborder A, Coccidia. Suborder B, Haemosporidia. Suborder C, Sarcosporidia. Order 2, Gregarinida. 191(3.] NATURAL SCIENCES OF PHILADELPHIA. 387 Subclass II, Neosporidia. Order 1, Cnidosporidia. Suborder A, Myxosporidia. Suborder B, Microsporidia. Suborder C, Actinomyxidia. Order 2, Haplosporidia. It is to be observed that the characters used by Doflein to classify the Telosporidia are not those having to do with the nature of the life history. Thus, although the Haemosporidia have two host- while the Coccidia have but one, these two groups are ranked ;i- closely related suborders. Therefore the fact that we are still in the dark as to whether the Sarcosporidia have two hosts or only one has no bearing upon what is their proper place in the classification of the Sporozoa. With regard to this question, the probabilities are that there are two hosts. Indeed, such an hypothesis is more or less obligatory when it comes to accounting for the wide-spread occurrence of Sarcosporidia in purely herbivorous animals, such as sheep. As no more than an interesting speculation, it might be suggested that the second host, a carnivor, infects itself by eating the infected flesh of a herbivor. The merozoites, released in the intestine, initiate the sexual cycle and the encysted form is discharged in the feces. This encysted stage, ingested by a herbivor with its food, eventual ly infects the muscles and the cycle is repeated. Analogy would lead us to suspect that the sexual cycle is, in general, confined to the carnivor; the asexual to the herbivor. This view receives a certain amount of indirect support from the facts that whereas the purely herbivorous sheep and cattle are practically invariably infected, records of the finding of sarcosporidian cysts in the muscles of car- nivorous animals are very rare. Finally, the fact that in the mouse both the sexual and asexual cycles occur presents no particular difficulty. Mice are omnivorous and can infect themselves either by eating the flesh of their dead fellows, or, as Negre first showed. by the contamination of their food with the encysted fecal stage. In conclusion, it may be mentioned that Negre's discovery is of the utmost significance when it comes to an endeavor to elucidate the life history of the Sarcosporidia. Yet, for whatever may have been the reasons, it has been persistently overlooked or ignored and hence has never been awarded the credit to which it is entitled. 388 PROCEEDINGS OF THE ACADEMY OF [June, References Cited. Bertram, A. 1892. Beitriige zur Kenntniss der Sarcosporidien nebst einem Anhange liber parasitische Schlauche in der Leibeshohle von Rotatorien .] natural sciences of philadelphia. 107 Pedro Miguel. Rhamdia montaguensis ((.anther). One example, 145 mm. Piabucina panamensis c sill. Three, 93 to 105 mm. Active and difficult to secure. Astyanax mexicanus (Filippi). Four examples, 67 to 72 mm. Poeciliopsis retropinna (Regan). One example, a female, 30 mm. long. Bufo marinus (Linne). One, 45 mm. long, measured from snout to vent, with three ticks on its back. Bufo typhonius (I.inn6). Two small examples which agree with Ecuador material. Length 31 and 32 mm. from snout tip to vent. Leptodactylus caliginosus (Girard). Vomerine teeth in two closely approximated areas. Eye half length of snout. Nostril near first third in snout length. Tym- panum | of eye. Skin smooth, except hind femoral region posteri- orly, which granular. Slight fold extends from shoulder to groin. Color in alcohol gray-brown generally. Broad blackish triangle between eyes. Black band from each side of snout back, including eye and tympanum, to shoulder, and posteriorly continued as several disconnected black spots. On each side of back, from above tym- panum to groin above, black band. Middle of back with lengthwise blackish blotches forming two distinct series on pelvic region. Groin olive-yellow, with few dark cloudings. Fore limbs marbled with dusky, forming a large blotch at and behind elbow. Hind limbs mottled in more contrast with dusky, femoral and tibial region- with several broad dark blotches as cross-bars. Tarsi and metatarsi dusky, outer surfaces mottled or blotched with darker. Under surface whiti-h, lips mottled with grayish. Length 86 and 91 nam., measured from snout tip to vent. Locality given as Corozal. Iguana tuberculata Laurenti. Two young examples, 247 and 251 mm. Basiliscus basiliscus (Linne). A female, containing eggs. Length 107 mm. 408 PROCEEDINGS OF THE ACADEMY OF [June, Ameiva ameiva praesignis (Baird and Girard). Color in alcohol largely greenish-brown on back. Yellow line each side of back extends from eye, and another similar, though white line from lower edge of eye to groin, interspace jet-black with row of obscure whitish spots. Black band also continued along side of tail at first, fading out behind. Tail brownish above, mottled with dusky. Below lower white lateral line, which most pronounced, gray shade and clouded with dusky or blackish. Under surface of head and trunk gray-white. Upper surface brown, sides whitish. Limbs brownish above reticulated with black, forming two broad black lengthwise lines on hind femoral region and upper continued at first along tail basally short space, gradually fading behind. One example, 255 mm. Leptodeira polysticta Gunther. One, differing a little from Gunther 's figure in not having a distinct lengthwise dark bar dividing the neck, but with a lengthwise dark brown saddle-like blotch, pale in the middle. Length 470 mm. Elaps fulvius (Linne). Two examples, 502 and 528 mm. Empire. Eleutherodactylus rhodopsis Cope. Two examples, 15 mm., measured from snout tip to vent. Anolis trochilus Cope. One example, 83 mm. long. Anolis lionotus Cope. Three, 70 to 158 mm. Nor ops auratus (Daudin). Three, 114 to 161 mm. Panama. The fishes of Panama Bay have been elaborately treated by Profs. C. H. Gilbert and E. C. Starks in 1905, so that the list here given is only supplementary. Tachisurus steindachneri Gilbert and Starks. Head 3| to 3|; depth 4f to 5§; D. I, 6 and I, 7; A. vi, 13 and 13; snout 2f to 2| in head; eye 5| to 5|; mouth width 2f to 3; inter- orbital 2|; dorsal spine If to 1§. Palatine teeth coarsely granular, without a backward angle extending on inner edge. Granulations or striae on head extend forward nearly opposite middle of eyes. 1916.] NATURAL SCIENCES OF PHILADELPHIA. -409 Fontanel extends hack as narrow groove to occipital plate. Inner surfaces of ventral black, front edge of fin white. Pectoral similarly blackish inside. Upper caudal lobe little longer. Two examples, 200 and 210 mm. long. They differ slightly from the figure given by Gilbert and Starks in the striae on top of the head extending more distinctly forward. Muraena clepsydra Gilbert. One, 595 mm. long. Pceciliopsis presidionis (Jordan and Culver). Male and female, 23 and 37 mm. Tylosurus scapularis Jordan and Gilbert. Caudal peduncle about wide as deep, and lateral line forms slight though inconspicuous keel along each side. Eye 7 in upper jaw, 3 in postocular part of head. Upper jaw nearly an eye-diameter longer than lower, and not completely closing against lower pos- teriorly, so that distinct interval is seen between them. D. n, 14; A. ii, 15. Upper surface of body greenish in alcohol, especially on head. Sides and below silvery-white. Narrow lateral band of leaden, tapering or narrowed at shoulder and caudal base, and more or less expanded behind. Iris silvery-white. Fins all pale. Length 695 mm. Holocentrus suborbitalis Gill. Three examples, 87 to 90 mm. Mugil CUrema Valenciennes. Fourteen small examples, largest 122 mm. Caranx hippos (Unne). Two, 111 and 175 mm. Caranx caballus (Gunther). One, 160 mm. long. Vomer setapinnis (Mitchill). Two, 172 and 182 mm. Centropomus unionensis Bocourt. One example, 135 mm. Alphestes multiguttatus (Gunther). Two, 147 and 172 mm. Pectoral with at least five distinct dark vertical cross-bars. Diplectrum radiale (Quoy and Gaimard). One, 190 mm. Called "sand mullet." 410 PROCEEDINGS OF THE ACADEMY OF [June, Rypticus nigripinnis Gill. Two small examples, 48 and 49 mm. Xenichthys xanti Gill. One, 162 mm. Lythrulon flaviguttatum (Gill). Two, 140 and 148 mm. Anisotremus interruptus (Gill). Four young, 30 to 54 mm. Anisotremus taeniatus Gill. One example, 143 mm. long. Bairdiella ronchus (Valenciennes). Head 2|; depth 3|; D. X-I, n, 25; A. II, 8; scales 46 in lateral line to caudal base; snout 3 f in head; eye 4f ; maxillary 2\; inter- orbital 4. Snout convexly protruding in upper profile. Lower jaw slightly projects. Lower teeth mostly uniserial, enlarged, conic. Symphyseal knob distinct, surmounted by two canines. Eye little shorter than snout. Preopercle denticles small, larger one below directed forward. Second anal spine 2| in head. One example, 178 mm. long. Eucinostomus californiensis (Gill). One, 83 mm. ■Gerres peruviaiius Valenciennes. Three, 75 to 85 mm. TJpeneus grandisquamis Gill. Four examples, 117 to 164 mm. Acara caeruleopunctata Kner and Steindachner. One, 148 mm. Abudefduf mauritii (Bloch). Series of all ages which appear to agree with the Atlantic form. Length 38 to 102 mm. Abudefduf declivifrons (Gill). One example, 67 mm. Pseudoscarus perrico (Jordan and Gilbert). Called "parrot chub." Color in alcohol dusky-brown generally. Blue-green spots radiate around eye. Jaws greenish. Vertical fins livid dull dusky-purple, edges of dorsals and anals narrowly blue-green. Dusky blotch at pectoral base, fin pale. Outer ventral edge pale, rays brownish. Iris yellowish. Lengtih 206 mm. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 411 Hepatus crestonis .f<>rdan and Starks. Head 3f; depth If; D. IX, 25; A. Ill, 24; snout ll, in head; i 4; interorbital 2|; pectoral l^j. In alcohol largely uniform dark chocolate-brown. Dorsals and anals blackish. Caudal slightly paler basally. Pectoral with broad whitish submarginal shade. Length 103 nun. Chaetodon humeralis (Gunther). One example, 124 mm. Jordan and Evermann state "3 dark hands across caudal peduncle at base of fin; caudal fin with a faint band; ventrals dark." My example shows but a single dark trans- verse bar on caudal peduncle at caudal base and caudal fin with two very sharply contrasted blackish vertical bars slightly expanded me- dianly, and anterior much wider than any of bars on caudal. The ventrals are whitish with two very indistinct vertical gray bars. Pomacanthus zonipectus (Gill). Head 3|; depth If; D. XI, 25; A. Ill, 21; snout 3 in head; eye S\ ; interorbital 3. Color faded in alcohol, vertical pale lines whitish. Traces of similarly curved lines, parallel, some irregular in dark .areas between whitish lines. Also dark areas with numerous small obscure blackish spots. Length 125 mm. Chastodipterus zonatus (Girard). One example, 148 mm. Balistes vetula Linn6. Two, 100 and 103 mm. long. Spheroides annulatus (Jenyns). Two, 49 and 94 mm. long. The dark spots are smaller and more numerous than in Atlantic examples of S. testudineus of the same size. Diodon hystrix Linne. Two examples, 122 to 125 mm. Scorpaena mystes Jordan and Starts. Head 2|; depth 3^; D. XII, 10; A. Ill, 5; scales 39 to caudal base and 2 more on latter, along lateral line; 7 scales above 1.1.; 15 scales in vertical series between 1.1. and spinous dorsal origin: snout 3f in head; eye 5; maxillary 2\; interorbital 5 ; about 27 pores in lateral line to caudal base. No supraorbital cirrus. Slight pit below front eye edge and suborbital stay. Length 250 mm. -Mapo soporator (Valenciennes). Twenty-nine examples, 25 to 122 mm. 28 ' 412 PROCEEDINGS OF THE ACADEMY OF [June, Garmanina paradoxa (Gtinther). Head 3§; depth 4§; D. VII, i, 11, i; A. i, 9, i; scales 15 in median series on hind part of trunk, begin opposite origin of soft dorsal; 8 scales transversely between last dorsal and anal rays; snout 4 J in head; eye 5^; maxillary 2\\ interorbital about 11. Gill-rakers 1+8 short points with broad bases, much shorter than filaments. Color in alcohol pale brownish generally, scarcely paler below. About 13 pairs of deeper brownish transverse bars, from back down along side, and each 2 pairs placed closer to one another, and in places irregularly joined. Each bar seen to be forked as a darker reticulation around a paler spot or centre, also reticulations of various extent. Similar dark transverse bar extends down on cheek, though narrower one immediately behind eye and another on top of head before gill-opening, not extending down on side of head. Iris with pale circle around pupil. Ventrals blackish, edge narrowly whitish. Fins all grayish, clouded or obscurely marked with darker. Length 42 mm. Microgobius miraflorensis Gilbert and Starks. One 26 mm. long. Gilbert and Starks give A. 17, though their figure shows i, 10. My example lacks the cirri about the jaws they represent, and at present the dark spots on the fins are much more contrasted. Hypsoblennius striatus (Steindachner). Fourteen examples, 46 to 80 mm. Batrachoides pacifici (Giinther). Two adults, 178 and 222 mm. long. Young examples differ in the absence of scales. Gobiesox microspilus sp. nov. Fig. 4. Head 2|; depth 5; D. 13; A. 9; P. 25; head width \\ its length; snout 3|; eye 6; mouth width 2|; interorbital 2f; third dorsal ray 3; third anal ray 3|; least depth caudal peduncle 4^; caudal If; pectoral 2\. Body moderately long, depressed forward, compressed behind, convex above, flattened below, and slight median groove before anal. Caudal peduncle compressed, short and little free. Head large, upper profile convex from snout tip to occiput, lower nearly straight and horizontal. Snout wide, convex over surface, length less than half its width as measured across front of eyes. Eye ellipsoid, high, centre slightly behind first third in head length. Eyelids not distinct, skin of head passing over. Mouth broad, 1910.] NATURAL SCIENCES OF PHILADELPHIA. ii.; upper jaw slightly protruding. Lips broad, each fringed with lather long free dermal Maps. Transverse groove of premaxillaries distinct, on snout above. Teeth in one row in each jaw, simple, conic, two front ones enlarged or canine-like above. Both jaws with anterior teeth little enlarged, and in front of lower more so, com- pressed or incisor-like, their tips rather broadly triangular. Inner buccal folds broad. Tongue broad, fleshy, depressed, free around edges. Nostrils rather close together, above level of eye near its front edge, anterior in short fleshy tube and posterior simple pore. Interorbital broad and slightly convex. Opercular spine not extend- ing through integument, concealed. Gill-opening extends forward about opposite last § in head, Gill- rakers about 6 short rudimentary points, much shorter than short gill-filaments. Fig. 4. — Gobiexu.c mierosfnlus Fowler. Skin smooth. A number of pores along lower side of head, and about fringes of lips. Dorsal inserted about midway between centre of head and caudal base, tips of rays slightly protrude beyond connecting membranes. Anal inserted slightly behind dorsal origin, fin similar. Cam hi I rounded behind. Pectoral broad, upper rays longer, hind edge rounded, with free fold in front opposite lower base, and broad flap concealed, behind axilla, extends up from disk. Disk large, circular, its length about \\ in head. Margins of disk, all for broad extent, finely papillose. Vent before anal, though slightly behind origin of dorsal. Color in alcohol dark chocolate-brown, except lower surface of 414 PROCEEDINGS OF THE ACADEMY OF [June, head and disk, which whitish. Entire upper surface marked with closely set dusky spots, mostly of uniform size, and all with a more or less lengthwise disposition. Black blotch on head about an eye- diameter behind eye on its level. From eye dark spots are darkened, to form obscure streak forward, one below and one behind. Vertical fins largely dusky or blackish. Dorsal with sub-basal lengthwise whitish streak, one medianly and protruded tips of rays same color. Anal with median lengthwise paler area, protruded tips of rays whitish. Caudal crossed by three obscure darker bands, tips of rays whitish. Pectorals brownish. Iris slaty, olive-yellowish circle around pupil. Length 37 mm. Type, No. 45,213, A. N. S. P. Panama, in a pool. May 30, 1915. D. E. Harrower. Purchased. Only the above example obtained. This species is very closely allied with G. papillifer Gilbert from Lower California. It differs in several respects. G. papillifer has the teeth in both jaws biserial. Its color is also said to be uniform dark olivaceous, and the color of the fins is different. (Mtxpos, small; ?, sack; from the vernacular Sac-a-Lait of the typical species.) Fundulus similis (Baird and Girard). Hydrargira similis Baird and Girard, Proc. Acad. Nat. Sci. Phila., 1853, p. 389. Indianola, Texas. Nos. 6,987 and 6,988, A. N. S. P. Cotypes of H. similis Baird and Girard. Indianola, Texas. From the Smithsonian Institution. Both small examples. Miami River (Dr. H. A. Pilsbry), Boca Chica Key (Fowler) and Carrabelle (M. Hebard), Florida. Fundulus majalis (Walbaum). Besides the large series of local or Middle Atlantic States specimens, already recorded, are others from: Florida (Bayport); South Caro- 1916.] NATURAL SCIENCES OF PHILADELPHIA. 117 lina (Charleston and Hilton Head); Massachusetts (Woods Hole, Nantucket and Salem). Fundulus punctatus Gunther. Central Guatemala (Cope). Subgenus FUNDULUS Lac6pdde. Type Fundulus mudfish Lac£pede. Form short, robust. Snout short or moderate. Jaws not pro- duced. Sexes unlike in coloration, females usually paler or uniform. Female with anal tube on first anal ray. Anal rays of male usually with nuptial denticles during the spawning season. Fundulus parvipinnis Girard. Proc. Acad. Nat. Sci. Phila., 1854, p. 154. San Diego, California. No. 7,255, A. N. S. P. Cotype. From the Smithsonian Institu- tion (No. 938). Fundulus heteroclitus (Linne). Fort Macon, North Carolina (Dr. H. C. Yarrow) and Charleston, South Caolina (Dr. J. E. Holbrook). Fundulus heteroclitus macrolepidotus (Walbaum). Besides a very large series from various of the Middle Atlantic States, most of which have been listed, are examples from New York (Hudson River at Piermont, Long Beach, South Long Beach, Nassau on Long Beach and New York Harbor); Connecticut (Sachems Head and Scotts Cove near Darien); Rhode Island (New- port); Massachusetts (Woods Hole, Nantucket and Boston). Fundulus heteroclitus badius Carman. Prince Edward Island and Magdalen Islands, Canada.1 Fundulus grandis Baird and Girard. Proc. Acad. Nat. Sci. Phila., 1853, p. 389. Indianola, Texas. No. 7,420, A. N. S. P. Cotype. J. H. Clark. From the Smith- sonian Institution (No. 650). Bayport (Cope) and Carrabelle (M. Hebard), Florida. Fundulus nisorius Cope. Proc. Ainer. Philos. Soc. Phila., XI, 1870, p. 456. Gaboon, West Africa. Head 3 to 3|; depth 31 to 4; D. usually i, 11, often i, 10, rarely i, 12; A. usually i, 10, often i, 9, rarely i, 8 or i, 11 ; scales usually 32, often 33, sometimes 31, 34 or 35 in lateral series medianly to caudal base, and usually 4, rarely 3 or 5 more on latter; snout 3| to 4 in 1 Proc. Acad. Xat. Sci. Phila., 15)15, p. 518. 418 PROCEEDINGS OF THE ACADEMY OF [June, head, measured from snout tip; eye 2f to 4J; maxillary 2f to 3^; interorbital 2 to 2f. Body rather robust, compressed, more so in male. Head short, obtuse. Snout depressed, length f to § its width. Eye close to upper profile, centre near first third in head. Mouth moderate, lower jaw obtuse, projects. Teeth conic, fine, in bands in jaws, outer row enlarged. Interorbital flat. Gill-rakers 2 or 3 + 9, lanceolate, about half length of filaments. Scales largest on top of head, smaller on breast, belly and caudal base. Lateral line complete, inconspicuous, as single small pore on middle of exposure of each scale medianly along side. Dorsal origin little nearer caudal base than gill-opening in adult female, much nearer latter in young and adult male. Anal origin about opposite second branched dorsal ray base, fin much higher than dorsal. Female without anal sheath, though with long simple tube, long as first ray. Caudal truncate, rounded convexly behind Avhen spread open. Pectoral not quite reaching ventral, latter not to anal. Paired fins still shorter in adult female. Color in alcohol, of male, brownish generally, little paler below. Sides with about fourteen to seventeen narrow vertical bars, less than half width of exposed scales. Also in course of each bar scattered pearly or whitish rounded spots, smaller and more crowded about caudal base. Vertical fins dusky, with irregular and variable whitish spots, smaller on caudal, and edges of all these fins broadly whitish. Female uniform brownish, paler on under surfaces, and without dusky or dark pectorals and ventrals of male. Male with terminal portions of anal rays covered with little points or denticles, row to each shaft. These absent in female, though in some females a few little points or granules on rays of dorsal fin on their outer portions. Length 33 to 91 mm. Nos. 7,227 to 7,233 and 7,293 to 7,303, A. N. S. P. Cotypes of F. nisorius Cope. Gaboon, West Africa. P. B. Duchaillu. This very interesting species, incompletely described by Cope, is the exact African counterpart of F. heteroclitus. It resembles the latter in almost all respects, and differs in but few minor characters, as shorter pectorals, etc. Fundulus antillarum sp. nov. Fig. 1. Head 3^; depth 3f; D. i, 11; A. i, 9; P. 16; V. i, 5; scales about 34 in median lateral series to caudal base, and 4 more on latter; 13 scales transversely between dorsal and anal origins; about 23 predorsal scales; head depth at occiput If its length; head width If; fifth branched dorsal ray If; fifth branched anal ray If; least depth of caudal peduncle If; caudal 1TV; pectoral 1^; ventral 2\; 1916.] XATIHAL S( [EN< BS OI PHILADELPHIA'. I lit snout 3| in head, measured from upper jaw tip; eye 1!: maxillary 3; interorbital 2,1, . Body moderately long, also moderately depressed anteriorly, well compressed behind, back scarcely elevated. Caudal peduncle robust, well compressed, about long as deep. Head moderately short, wide above, upper profile uearly straight from snout tip to oeciput and less inclined than lower. Sid.- of head moderately approximated below. Snout short, depressed, length about § its width. Eye rounded, high or close to upper profile and its centre near first f in length of head. Mouth rather small, lateral cleft -light, oblique. Premaxillaries well protractile. Maxillary extends down till close before front edge of eye. Lips moderately fleshy. Teeth all simple, conic, in bands in jaws, and 1 iu. 1. — Fundulus anlillarum Fowler. outer row enlarged and slightly curved. Upper and lower inner buccal folds moderately wide, entire. Tongue fleshy, depressed, elongate, end rounded and free in front. Lower jaw robust, pro- trudes beyond upper, convex over surface and in profile. Nostrils superior in front of interorbital space and front edge of eye. Inter- orbital space depressed or flattened, and slight median transver-c depression over front of eyes. Hind preopercle edge slightly inclined forward. Gill-opening extends forward about opposite hind edge of eye. Gill-rakers 2+9, lanceolate, about half length of gill-filaments which slightly less than horizontal diameter of eye. Isthmus wide. Branchiostegals 4. Scales moderate with concentric striae, larger on front predorsal 420 PROCEEDINGS OF THE ACADEMY OF [J UD.e, region and top of head, and smaller on breast, prepectoral region and caudal base. Cheek with 3 rows of scales. Lateral line complete, inconspicuous, developed as single small pore on each exposure of scale. Dorsal origin slightly nearer gill-opening than caudal base, branched rays about uniformly high, and extend § space to caudal base. Anal inserted about opposite base of second or third dorsal ray, and median posterior rays longest, longer than dorsal rays, and reach f to caudal base. Caudal apparently truncate behind, rounded as spread open. Pectoral low, rather small, reaches about f to ventral. Latter inserted nearly midway between front of eye and caudal base, fin reaching vent, close before anal. Color in alcohol largely dull brownish with faint olivaceous tinge, especially above. Each scale with a rounded paler basal spot. These spots at intervals of several scales each with pearly tint or whitish, so that traces of about a dozen vertical whitish streaks occur. Fins brownish, dorsal and caudal little darker. Dorsal with several large cream-colored blotches about basal portion of fin, and caudal with three irregular and obscure vertical darker cross-bars. Iris pale yellowish. Length 78 mm. Type, No. 7,225, A. N. S. P. St. Martins, Danish West Indies. Dr. R. E. Van Rijgersma. Also No. 7,226, A. N. S. P. Paratype, same data. Head 3f; depth 4; D. i, 10; A. i, 9; scales about 31 to caudal base and 5 more on latter; 13 scales transversely between dorsal and anal origins; about 25 predorsal scales; snout 3| in head measured from upper jaw tip; eye 3|; maxillary 3; interorbital 2|. Length 76 mm. This example a female, and its coloration largely like the type. Dorsal and caudal fins differ only in being uniform brownish. Anal with a well-developed tube along its front edge but little shorter than first anal ray. This species is very closely related to F. heteroclitus. Compared with examples of equal size, but slight, though apparently constant, points of difference are noted. The males of both species are quite similar, though in F. heteroclitus the white spots on the dorsal are much smaller. As the female of F. heteroclitus is uniform brownish the female of F. antillarum differs in having the base of each scale with a whitish spot. In proportions, measurements, etc., the two species are similar. A large series of F. heteroclitus easily covers the structural characters. 1916.] NATURAL SCIENCES OF PHILADELPHIA. }_M 1 first thought this species was F.fonticoh Valenciennes.2 It is described with twelve anal rays, apparently deeper body, and possibly smaller rounded dorsal and caudal. Valenciennes says: ' La couleur parait avoir etc un vert uniforme sur tout le corps, et je ne voia aucune tache sur les nageoires." He also gives the following remark, which may in part refer to F. antillarum: "Une note, ajoutie a la fin de cet article, fait penser que M. Plee croyait aussi qui ce poisson habite la Martinique, car il dit: 'ce sont les poissons qu'on appelle dormeurs dans nos isle-." Les a-t-il confondus avec de jeunes Eleotris, qui sont ainsi denommes? " This is interesting as showing the possible occurrence of Fundulus in the Lesser Antilles, now fully corroborated by the present species. Another species, likely closely related is F. bermudce Gunther.3 It appears to differ in the smaller head, dorsal rays fourteen and anal rays twelve. Later this was redescribed as F. rhizophorcc Goode,4 with its color given as light tawny-brown, with about fifteen regular transverse bands of greenish- brown, each two scales in width and most distinct on trunk posteri- orly. No mention is made of the color of the fins. The only remaining West Indian species is F. cubensis Eigenmann,6 which differs entirely in its large scales (24), advanced dorsal and anal and coloration. (Named for the Lesser Antilles.) Fundulus hispanicus (Valenciennes). One from Spain in poor state of preservation. Possibly it differs largely in the more posterior position of the dorsal and anal fins, which are exactly opposite, from the American species. It approaches Zygonectes in the large scales (29 to 32) and small dorsal (9 to 11). Subgenus FONTINUS Jordan and Evermann. Type Fundulus seminolis Girard. Form long, slender. Snout short or moderate. Jaws not pro- duced. Sexes unlike in coloration during spawning season, otherwise of similar barred appearance. Females with anal sheath, but no anal tube extending beyond. Males brilliant, sometimes with denticles or tubercles on body and fins during the spawning season. Fundulus diaphanus (Le Sueur). A very large series from the Middle Atlantic States, already 2 Hid. Nat Poiss., XVIII, 1846, p. (198) 148. Porto Rico. Ann. Man. Nat. Hist. London (4), XIV, 1874, p. 370. Bermudas. * Amer. Jour. Sc. Art. C-Si. XIV. 1877, p. 298. Balden Pond, Bermuda. 5 Bull. C S. F. Com.. 1902 (1904), p. 222, fig. 1. Rio del Pillar, Cuba. 422 PROCEEDINGS OF THE ACADEMY OF [Juiier recorded, besides examples from Massachusetts (Cambridge) ; Rhode Island (Newport); New York (Sing Sing). Fundulus diaphanus menona (Jordan and Copeland). Indiana; Chicago, Illinois; Grosse Isle, Michigan. Fundulus zebrinus Jordan and Gilbert. Bull. U. S. Nat. Mus., No. 17, 1882, p. 891 (based on Hydrargyra zebra Girard, Proc. Acad. Nat. Sci. Phila., 1859, p. 60. Tributary of the Rio Grande between Fort Defiance and Fort Union, New Mexico. Not of De Kay 1842.) No. 7,352, A. N. S. P., cotype of H. zebra Girard. Coll. Mollhausen. Smithsonian Institution (No. 2,590). Also a fine series from Indiana (Wabash River) ; Iowa (Silver Lake); Texas (Red River in Staked Plain from Brazos River to Texas Tuli Canyon, south of Clarendon, between Seymour and Austin, and Comanche Creek at Fort Macon). Fundulus seminolis Girard. Lake Kerr, Florida. Subgenus XENISMA Jordan. Type Xenisma stellifera Jordan. Form long, very slender. Snout short or moderate. Jaws not produced. Sexes unlike in coloration during spawning season, otherwise of similar finely spotted appearance. Females with anal sheath, but no anal tube extending beyond. Males brilliant, and anal prickly in spawning season. Fundulus catenatus (Storer). Virginia (Holston River), Arkansas (Eureka Springs), and Tennes- see (Coal Creek in Clinch River basin) . Fundulus stellifer (Jordan). Xenisma stellifer Jordan, Ann. Lye. N. Hist. N. Y., 1870, p. 322. Etowah and Oostanaula Rivers, Rome, Georgia. Nos. 20,718 to 20,720, A. N. S. P., paratypes of X. stellifer Jordan. Rome, Georgia. D. S. Jordan. From E. D. Cope. Subgenus ZYGONECTES Agassiz. Type Poecilia olivacea Storer. Form elongate, fusiform. Snout short or moderate. Jaws not pro- duced. Sexes unlike in coloration, at least during spawning season. Females with anal sheath, but no anal tube extending beyond. Males brilliant, and anal sometimes prickly in spawning season. Dorsal and anal fins small, former distinctly inserted behind origin of latter. 1016.] NATURAL SCIENCES OF PHILADELPHIA. 123 Fundulus floripinnis Cope) Haplochilus floripinnis Cope. Zool. Wheeler's Surv. Terr., Is?.". (187 p. 695, PL 28, figs. I a-b. Colorado and Platte Rivers al Denver, Colorado! Nos. 18,733 to 18,738, A. N. S. P., cotypes of //. floripinnis ( !ope. Fundulus pulvereus Evermann. Baldwin Lodge, Mississippi. Fundulus sciadicus Copi Proc. Acad. Nat. Sci. Phila., 1865, p. 78. Platte River, Nebraska. Nos. 7,183 to 7,201, A. N. S. P. Cotypes. Dr. W. A. Hammond. Fundulus luciae (Baird). A large -cries of examples from the Middle Atlantic Stales. All but the examples obtained at Anglesea, New Jersey, on October 3, 1897, by Messrs. \V. J. Fox and P. Laurent, have been recorded. Fundulus chrysotus (Gunthcr). Tick Island in Spring Garden Creek of the St. John's River basin (Dr. H. A. Pilsbry and C. W. Johnson) and the everglades at Miami River in Dade County (S. N. Rhoads), Florida. Also an example from Beaumont, Texas. Fundulus balboae sp. nov. Fig. 2. Head 3f; depth 4f ; D. n, 8; A. i, 12; P. i, 12; V. i, 5; scales 34 in median lateral series to caudal base, and 5 more on latter; 10 scales between dorsal and anal origins; about 30 predorsal scale-: head width If its length; head depth at occiput If; snoul 3; eye 3f ; maxillary 4f; interorbital 2|; sixth branched dorsal ray If; tenth branched anal ray 1|; least depth of caudal peduncle 2|; caudal 1TV; pectoral If; ventral If. Body elongate, moderately depressed above in front, compressed behind. Caudal peduncle compressed, least depth little less than its length. Head depressed above, less so below, and profiles nearly straight, though lower little more inclined. Snout broad, depressed, length | its width. Eye large, rounded, slightly before middle in length of head, close to upper profile, and extends more on under surface of head than on upper surface. Mouth terminal, gape not quite half way to eye. Premaxillaries protractile. Maxillary reaches back opposite hind nostril. Jaws robust, protruding, and lower projecting slightly beyond upper. Bands of fine teeth in jaws, and an outer rather wide-set row of slightly enlarged simple conic teeth. Lower jaw rather shallow, rami not elevated inside mouth. Lip- rather fleshy. Tongue fleshy, free in front and about edges, well 424 PROCEEDINGS OF THE ACADEMY OF [June, back in mouth. Upper buccal fold moderately broad, lower nar- rower. Nostrils lateral on snout above, near front of eye. Inter- orbital slightly convex. Hind preopercle edge slightly inclined backwards. Gill-opening' extends forward about opposite hind pupil edge. Gill-rakers about 1 + 7 short robust points, much shorter than gill- filaments, latter about If in eye. Isthmus narrow. Scales cycloid, with many concentric striae, little smaller on breast and belly, more so on caudal base. Scales larger on head above and front predorsal region. Lateral line imperfect and incomplete, at row of pores, one to each scale in middle of its exposure, to ventral, behind latter dropping a row of scales and then extending to caudal base. Dorsal origin about last third in space between centre of eye and caudal base, sixth branched ray highest, and depressed fin extending Fig. 2. — Fundulus balhoce Fowler. back to caudal base. Front § of anal base before dorsal or origin of fin little nearer gill-opening than caudal base, fin like dorsal, only falling slightly shorter of caudal base. Caudal oblong, hind edge apparently slightly convex. Pectoral small, reaches f to ventral, latter reaching anal. Color in alcohol dark olive-brownish generally, with apparently more or less uniform ground-color. A dark or dusky longitudinal band from mouth to eye, behind latter to gill-opening and continued to caudal base. After gill-opening this band extends below median axis, of trunk, and its width slightly less than vertical eye-diameter. Iris warm brownish. Fins uniform pale brownish, except dorsal and upper part of caudal, which marked with a few rather wide-set dark brownish spots. Length 62 mm. 191(3.] NATURAL SCIENCES 0] PHILADELPHIA. 125 Type, No. 16,728, A. X. S. I'. Panama. Lieutenant Fields. Only the above example known. It is apparently not closely related to any of the known species of the subgenus. (Named for Balboa, Panama.) Fundulus nottii Agassis. Indiana; North Carolina (Wilmington); Georgia (Thomasvil Florida (Leon County and Walaka). Fundulus notatus (Rafinesque). F. minus Cope, Proc. Acad. Nat. Sri. l'liila., L865, p. 7*. Detroil River, Grosse Isle, Michigan. No. 7,142, A. N. S. P., type of F. aureus Cope. Illinois (Illinois River basin at Marley); Missouri; Arkansas; Indian Territory; Texas (Fort Worth). CHRIOPEOPS subgen. nov. Type Lucania goodei .Ionian. Form fusiform, elongate. Teeth in jaws in two series, simple, conic, outer row enlarged. Jaws short, obtuse. Dorsal fin inserted slightly before anal origin. Female with an anal sheath. Differs from the other subgenera of Fundulus in the dentition, as all have the inner teeth in a fine villiform band, at least in more than one row. It resembles certain species of Zygonectes in the black lateral band, but the anterior position of the dorsal at once distinguishes it. Small fishes, little over an inch in length. (Chriope, an old name for Notropis bifrenatus, and "<«:'">, pointed ; Zygom ctes. > 426 PROCEEDINGS OF THE ACADEMY OF [June, Fundulus dovii (Giinther). Central America (Cope) . Aplocheilus panchax (Hamilton-Buchanan). India. Aplocheilus macrostigma (Boulenger). Haplochilus macrostigma Boulenger, Ann. Mag. Nat. Hist., (8) VIII, 1911, p. 26S. Lucola River, Luculla River, and Luali River, Portuguese Congo. Nos. 38,632 to 38,641, A. N. S. P. Paratypes of H. macrostigma Boulenger. Luna, Luali River, West Africa. Dr. J. W. Ansorge. Purchased. Aplocheilus camerouensis (Boulenger). Gaboon. Aplocheilus sexfasciatus (Gill). Epiplatys sexfasciatus Gill, Proc. Acad. Nat. Sci. Phila., 1862, p. 130. Gaboon. Nos. 7,129 to 7,141, A. N. S. P., types of E. sexfasciatus Gill. 'Gaboon, West Africa. P. B. Duchaillu. Also Luali River at Lundo in Chiloango. Aplocheilus senegalensis (Steindachner). Africa. Aplocheilus spilauchen (A. Dumeril). Chiloango Town, Portuguese Congo. Adinia multifasciata Girard. Proc. Acad. Nat. Sci. Phila., 1859, p. 118. Galveston, St. Joseph Island and Indianola, Texas. Nos. 7,291 and 7,292, A. N. S. P., cotypes. Indianola, Texas. Smithsonian Institution. Ttivulus micropus (Steindachner). Ecuador and Pebas, Peru. Xucania venusta Girard. Grand Plains Bayou (U. S. F. Com.), Mississippi; Juniper Creek >on southwest side of Lake George (Dr. H. A. Pilsbry and C. W. Johnson), Florida. Lucania parva (Baird). Besides a large series of local specimens from New Jersey, Delaware .and Virginia, are seven from the first-named State at Anglesea f(W. J. Fox and P. Laurent on October 3, 1897), not previously listed. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 427 Girardinichthys innominatus Bleeker. Act, Soc. Ind. Neerl. (Prodr. Ich. Arch, [nd.), I860, pp. Isl, 184 (on (Jirard's description without a name. Proc. Acad. N Phila IS')!), p. US. City of Mexico.) No. 7,605, A. N. S. P., cotype. City of Mexico. Collection Major W. Rich. Smithsonian Institution. Also seven examples from Lake Xochimilco in 1885 (E. D. Cope). ORESTIIN.E. Orestias cuvieri Valenciennes.- Tinta, Peru, and Lake Titicaca. Orestias pentlandii Valenciennes. Lake Titicaca. Orestias bairdii Cope. Journ. Acad. Nat. Sci. Phila., 1875, p. 185. Lake Titicaca. No. 21,554, A. N. S. P., type. Lake Titicaca, Bolivia. Prof. James Orton. 1873. E. D. Cope. This species has been merged with the preceding by Carman, though it appears to differ in the larger pectoral reaching half way to the vent, besides the much larger predorsal scales. Orestias agassizii Valenciennes. O. ortonii Cope, 1. c, p. 186. Lake Titicaca. O. frontosus Cope, 1. c. Lake Titicaca. No. 21,557, A. N. S. P., type of 0. ortonii Cope. Nos. 21,555 and 21,556, A. N. S. P., cotypes of 0. frontosus Cope. Also several other examples from Peru and Lake Titicaca. Orestias cypho sp. nov. Fig. 3. Head 2f; depth 2f; D. i, 13; A. i, 13; P. I, 18; scales 35 in median lateral series to caudal base and 5 more on latter; 14 scales transversely between dorsal and anal origins; about 23? predorsal -calcs; head width nearly equals its length; head depth at occiput If; lower jaw 3|; fifth branched dorsal ray 2f; fifth branched anal ray 2\\ least depth of caudal peduncle 2; caudal If; pectoral 1 | snout 5^ in head measured from upper jaw tip; eye 5^: maxillary 3^; interorbital 3|. Body very robust, especially anteriorly, compressed behind, - atesl depth about opposite middle of pectoral. Predorsal with vated rather stout and moderately convex median keel beginning at occiput. Caudal peduncle well compressed, length about \ its least depth. ffead very wide, robust, large, opercular regions swollen out 29 428 PROCEEDINGS OF THE ACADEMY OF [June, that depth of head at hind preopercle edge f its greatest width. Also prominent ridge on each side of head above opercles. Upper profile slightly convex at first, or to occiput, then concave to predorsal ridge. Lower profile steeply convex. Snout wide, depressed or but slightly convex, length about § its width. Eye small, high, front edge near first fourth in head. Mouth vertical, commissure extending slightly below lower eye edge. Upper jaw greatly pro- tractile, or for space slightly greater than eye-diameter. Maxillary vertical, extending back about half way to front of eye. Lips fleshy. Lower jaw vertical, convex in profile, shallow, rami not elevated inside mouth. Teeth small, simple, inconspicuous or concealed more or less in fleshy lips, disposed as narrow short band mostly in front of jaws. Tongue thick, fleshy, depressed, free Fig. 3. — Orestias cypho Fowler. around edges. Nostrils 2 little slits, close together, above and opposite front edge of eye. Interorbital wide and slightly convex. Hind ridge of preopercle slightly inclined back. Very slight median concave depression on top of head before predorsal ridge. Gill-opening extends forward opposite middle of eye. Gill-rakers about 10 short stumps, rudimentary. Gill-filaments slightly longer than eye. Isthmus narrow, gill-membranes forming broad fold across. Branchiostegals 5. Scales cycloid, largest on predorsal, becoming smaller on hind part of body, caudal base and lower side of trunk. Prepectoral region scaly. Scales on upper surface of head, predorsal and shoulders finely granular, other scales finely roughened with concen- tric stria?. Cheeks with 4 rows of scales, none below preorbital. Scales down median line of predorsal not especially enlarged. Bases 1916.] NATURAL SCIENCES OF PHILADELPHIA. |'_" | of dorsal and anal naked, also breast and median line of belly. No lateral line. Dorsal inserted slightly nearer caudal base than gill-opening, depressed fin not quite reaching caudal base. Anal origin opposite base of first branched dorsal ray, depressed fin reaching :,' to caudal base. Caudal moderately convex behind. Pectoral broad, rounded. If to anal. Vent close before anal. Color in alcohol largely uniform brownish with olive tinge, under surface paler or whitish. Fins all brownish, uniform. Iris brownish. Length 153 mm. Type, No. 21,920, A. N. S. P. Taken from a Permo snake from La Paz, Bolivia. 1876-77. Prof. J. Orton. From E. D. Cope. Only the above example known. It is closely related, if not identical, with 0. neveni Pellegrin,6 but that species differs according to its description in the following respects: Head 2\; depth 3; D. 15; A. 17; P. 21; scales 32; conic teeth somewhat numerous; dorsal inserted midway between gill-opening and caudal base; pectoral 2| in head. It agrees, however, in having the scales uniform and continuous each side of the median predorsal row, a character by which both species differ from 0. albus Valenciennes. The latter has a naked lengthwise area each side. (Cypho, hunchback; with reference to the predorsal keel.) CYPRINODONTIN.E. Cyprinodon variegatus Lac6pede. C. gibbosus Baird and Girard, Proc. Acad. Nat. Sci. Phila., 1853, p. 390. Indianola, Texas. No. 7,221, A. N. S. P. Cotype of C. gibbosus Baird and Girard. Indianola, Texas. Coll. J. H. Clark. Smithsonian Institution (684). Besides the numerous local specimens also examined and recorded, the collection contains others as follows: Connecticut (Noank); North Carolina (Fort Macon); Florida (Miami, southwestern region and Carrabelle); Alabama; Mississippi (Baldwin Lodge). Cyprinodon variegatus riverendi (Poey). Boca Chica and Marquesas Keys, Florida. Cyprinodon bovinus Baird and Girard. C. eximius Girard, Proc. Acad. Nat. Sci. Phila., 1859, p. 158. Chihuahua River, Mexico. No. 7,223, A. N. S. P. Cotype of C. eximius Girard. Chihuahua River, Mexico. Coll. Potts. Smithsonian Institution (No. 3, 501). '• Hull. Soc. Z. France, 1904, p. 9.5. Lake Titicaca. 430 PROCEEDINGS OF THE ACADEMY OF [June, Also several from Lago de Guzman, Chihuahua, Mexico (Dr. P. P. Calvert). Cyprinodon bovinus rubrofluviatilis subsp. nov. Fig. 4. Head 3; depth 2|; D. i, 9; A. i, 10; P. i, 15; V. i, 6; scales 27 in median lateral series to caudal base and 4 more on latter; 14 scales transversely between dorsal and anal origins; about 25 pre- dorsal scales; head width 1| in its length; head depth at occiput l£, lower jaw 3|; third branched dorsal ray \\; fourth branched anal ray If; least depth of caudal peduncle If; caudal If; pectoral If; ventral 2|; snout 3| in head measured from upper jaw tip; eye 3|; maxillary 3; interorbital space 2f. Body well compressed, deepest at dorsal origin, predorsal with Fig. 4. — Cyprinodon bovinus rubrofluviatilis Fowler. median trenchant keel and well arched before dorsal fin. Caudal peduncle compressed, its least depth li in its length. Head compressed moderately, upper profile more inclined than lower, and lower sides not especially converging below. Snout short, wide, and length about § its width. Eye moderate, high, centre about first § in head. Jaws greatly protractile, upper at least distensible space equal to snout length. Maxillary nearly vertical, largely concealed. Lips moderate. Teeth uniserial, compressed, each tricuspid and expanded terminally., Inner upper and lower buccal folds moderately wide. Tongue fleshy, small, depressed, little free around edges. Lower jaw slightly protruding in front, oblique to somewhat vertical, shallow, and rami not elevated inside 1916.] \\li RAL SCIENCES OF PHILADELPHIA. 431 mouth. Nostrils close above upper front, of eye ■ . small, simple. Interorbital slightly convex. Preorbital about f area • Hind preopercle edge little free and nearly vertical, entire. Gill-opening adnate above to gill-opening close above oase of G pectoral ray, and extends forward opposite hind pupil edge, Gill- membranes widely connected across rather narrow isthmus. Rakers about 26, short slender points about ^ length of gill-filaments, and latter equal eye. Branchiostegals 4. Scales rather narrowly imbricated, largest on top of head and opercles, smallest on breast and caudal base. Enlarged humeral scale longer than eye. Scales in 2 rows on cheek. Lateral line obscure and incomplete, formed as short arch of few pores parallel with contour of back far as dorsal origin, a single pore on each scale. Dorsal inserted midway between centre of eye and caudal base, median rays longest, and depressed fin extends § to caudal base. Anal inserted about opposite base of fifth branched dorsal ray, fin extending f to caudal base when depressed. Caudal with hind edge slightly convex. Pectoral long, reaches back well beyond ventral origin, latter little before dorsal, and fin reaching vent, which close before anal. Color of male, in alcohol, uniform brownish on back and upper surface of head. Sides and lower surface whitish. Fins all pale brownish, and except ventrals densely punctate darker as seen under a lens. Iris pale brownish. Length 53 mm. Type, Xo. 20,266, A. N. S. P. Brazos River, between Seymour and Authon, Texas. Collection of W. S. Black. E. D. Cope. Also large series, Nos. 20,267 to 20,324. A. N. S. P.. paratypes, same data. They show: Head 3 to 3|; depth 2f to 3; D. usually i, 9, rarely I, 8; A. I, 9 or I, 10; scales 25 to 29 in median lateral series to caudal base and 3 or 4 more on latter; 12 to 14 scales trans- versely between dorsal and anal origins; snout 3 to 4 in head measured from upper jaw tip; eye 2| to 3; maxillary 2| to 3|; interorbital 2| to 2|; length 33 to 45 mm. Most of this series females, and differing from the male in having , six or seven vertical wide cross- bars of dark brownish on trunk. These all more or less variable. Very pale brownish vertical streak at base of caudal. Outer hind portion of caudal with vertical submarginal dusky streak to median rays, though hind edge of fin narrowly pale. Often dorsal and anal ratherdark, though former mostly uniform. Young examples colored like females, variable. 432 PROCEEDINGS OF THE ACADEMY OF [June, This interesting form is closely related to Cyprinodon bovinus, apparently differing in the absence of a distinct black pale-edged ocellus on upper hind portion of dorsal. Also an example from the staked plains between the Brazos River and Tulip, Red River, Texas. 1892. E. D. Cope. Two from the Red River basin south of Clarenden, Texas. E. D. Cope. (Named for the Red River, of the most northern inland eastern region at which a member of the genus Cyprinodon has been found.) Cyprinodon macularius Baird and Girard. Pror. Acad. Nat. Sci. Phila., 1853, p. 389. Rio San Pedro, Arizona. Cyprinodon californiensis Girard, Proc. Acad. Nat. Sci. Phila., 1859, p. 158. San Diego County, California. No. 7,219, A. N. S. P., cotype of C. macularius Baird and Girard. Rio San Pedro, Arizona. J. H. Clark. Smithsonian Institution (No. 992). No. 7,220, A. N. S. P., cotype of C. californiensis Girard. San Diego County, California. Smithsonian Institution (No. 311). Also an example from Salt River, in the Gila Basin, at Tempe (Dr. H. A. Pilsbry), Arizona. Cyprinodon elegans Baird and Girard. Proc. Acad. Nat. Sci. Phila., 1853, p. 389. Camanche Spring, Texas. No. 7,222, A. N. S. P., cotype of C. elegans Baird and Girard, Camanche Spring, Texas. J. H. Clark. Smithsonian Institution (No. 686). Cyprinodon mydrus Goode and Bean. Large series from the Florida Keys, which I collected in 1904. Lebias fasciatUS Valenciennes. Mediterranean (Bonaparte No. 313). Dr. T. B. Wilson. GOODEIN.E. Goodea atripinnis Jordan. Lake Patscuaro, Mexico (Mexican expedition 1890). Characodon variatus T. H. Bean. Rio Verde at Rascon, San Luis Potosi, Mexico. PCECILIIN^. Gambusia affinis (Baird and Girard). Heterandria affinis Baird and Girard, Proc. Acad. Nat. Sci. Phila., 1854, p. 390. Rio Medina and Rio Salado, Texas. G. holbrooki Girard, Proc. Acad. Nat. Sci. Phila., 1859, p. 61. Palatka, Florida. i > YEAF IS Fig. 2. eggs. Food seems to be in most places abundant. The snails have been observed to be limited in number by the following factors : (1) Cannibalism within the egg capsule, only ten to twelve hatch- ing out of 300-400 eggs. (2) Limit to the number that can take refuge in cracks in rocks and yet get enough to eat. (3) Fish, such as pollack, will gobble up any stragglers. (4) Half-grown snails, ones too big for the pollack, are used by herring gulls as food, the empty shells being regurgitated. ■ ■ 444 PROCEEDINGS OF THE ACADEMY OF [J line, (5) Very large specimens are carried by the gulls to a height and dropped on any near-by flat rock in the same way as the gulls treat both sea urchins (Strongylocentrotus) and welks {Buccinum). Only the largest Purpura will break and only the largest are collected for this purpose. (6) Certain ones seem to be parasitized by a sporocyst, but this was not investigated. (7) Accidents, such as a surf heavy enough to move the rocks on which the animals live, may destroy others. In such habitats few if any are found. The maximum size of these rocks may in exposed places be boulders two to three feet in diameter, while in very shel- tered places Thais will be found on pebbles two inches in diameter. The limit is obviously determined by wave action. (8) Ice probably destroys others, as they are not found in places where shore ice can accumulate. (a) In Maine they are not abundant in shallow coves that freeze up solid in the winter time. (b) Their geographical distribution also seems to indicate that sand beaches are a barrier, as Thais lapillus is not found west of Montauk Point. On Long Island Sound the barrier has not been determined. Both Balanus and Mytilus being found west of Stam- ford, Conn., the most westerly recorded station for Thais, and the shore is still rocky. In the north shore ice seemed to form the barrier See map, fig. 3. Various adaptations are at once manifest on examining this animal: (1) The strong shell, so strong that a drop from a height will not always break it. (2) The strong foot, which makes dis- lodgment from its substratum difficult. (3) Its habit of seeking shelter under rocks and fucus. (4) The method of egg-laying, with its protection of the young until they are able to care for themselves, although if but two and a quarter per cent, of these laid hatch, those two and a quarter per cent, are almost sure to hatch. Method. As each station was visited, from 200 to 500 shells were collected when Thais was abundant. In some places they literally covered every inch of the rock. In other places they were so rare that a careful search of a quarter of a mile of beach would often disclose but two or three. Each collection as made was placed in a bag made of mosquito netting. While still alive the snails were sorted into the dozen or 1916.] NATURAL SCIEN< ES OF PHILADELPHIA. n:» so groups of the principal varieties. The number in each group was tabulated. For future reference the bag of snails was preserved in a tub of formalin. A study of the color varieties seems to show that there are a number of colors and patterns that may be combined together in any sort of way. These are as follows: (1) Pure white shells that show no trace of color. (2) Purple. The color in this ease is diffuse through the shell, but is darker within the aperture. Fig. 3. — Map of the North Atlantic Ocean showing the distribution of Thais (Purpura or Xucclla) lapillus. (After Cooke, Proc. Mai. Soc. London, vol. II, p. 193.) The cross-hatching shows the occurrence of T. lapillus. The southern barrier to T. lapillus is no1 clear, but the northern barrier is obviously the presence of ice on the shore (3) Chestnut. This color may be pure quite often, but it is- usually combined with purple, forming a chocolate, or with yellow,. forming olive. (4) Yellow is a color which, when uncombined with one of the others, makes the shell very conspicuous on the rocks. Owing to its relative rarity and to its being so conspicuous, it often appears in shell collections in proportions that are misleading. Only by collecting all the snails from a given locality can this be avoided. (5) Dilute. Every one of the colors mentioned above may appear in a dilute in contrast to its intense form. 446 PROCEEDINGS OF THE ACADEMY OF [June, (6) White lip of the apperture is quite common in some localities. In fact, purple is rarely found not associated with a trace of lighter color on the lip. This white lip may be combined with all colors and dilutions. (7) Narrow stripes. In many shells about ten narrow white stripes are found on any color background. 'These are sometimes associated with the ridges which appear on many shells. (8) Wide stripes of white, usually two in number, often appear. The widest stripe equals two or three of the narrow ones and the smaller stripe is double the width of the narrow ones. The widest stripe is always posterior to the narrower stripe. (9) Spot of purple on the columella. This is rare at Mount Desert, but very common at Rye Beach, New Hampshire. (10) Imbricata. A fluting of the ridges of the shell gives rise to the variety called by Lamarck imbricata. Apparently each one of the ten characters recognized may be combined with any other. If this is so there must be 1,103 varieties. Not that many varieties have been found. This is due to the fact that one cannot distinguish certain combinations from one another. As an example, let us consider the case of the colors alone. We have purple, chestnut, yellow, and white. There are eight possible combi- nations of these: white, purple, chestnut, yellow, purple-chestnut, purple-yellow, chestnut-yellow and purple-chestnut-yellow. These last four are shades of olive and chocolate, and cannot be distinguished easily from one another. If we combine these four color combina- tions into one group and omit the white lip and purple spot on the columella, we will reduce the possible number of variations to be recognized from 1,103 to 33. Twenty-eight of these thirty-three varieties have been recognized. However, there are five that are so rare that they were not discovered in a collection of six thousand shells when they were particularly sought after. These were narrow stripe dilute yellow, wide stripe narrow stripe yellow, wide stripe narrow stripe dilute yellow, narrow stripe dilute olive, and wide stripe dilute olive. The yellows which contribute to the olive color and the dilute are much rarer than any of the others, so it is no wonder that they are the ones that would be lacking in combinations. It is obviously impossible to attempt to correlate all the known varieties with environmental factors, so the writer has for the sake of convenience reduced still further the number of groups. The particular groups recognized are as follows: (1) White; that is, pure white. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 117 (2) Light — pure white, together with intense and dilute chestnut with white lip. The outer layer of the shell of these is white. (3) Dark — chestnut and purple in all their combinations. (4) Yellow — pure yellow. (5) Striped— both narrow and wide stripe in all their combinations and color. (6) Imbricated — in all the combinations of patterns and color- In the tables that follow the number of snails found in each group is stated in per cent, of all the snails in each collection from a given station. The Relation of the Varieties to the Environment. The base for this study was Greenings Island, an island locat< d between Northeast and Southwest Harbors in the mouth of Somes Sound. It is triangular in shape, with a perimeter of about two and a quarter miles. The main mass of the island is composed of till, which at one time formed the terminal moraine of the continental glacier before it retired from Somes Sound. This till is protected from rapid wave erosion by outcrops of reddish granite at the east and west end of the island. This granite is cut in several places by broad basalt dykes which run in a general north and south direction. Under wave erosion the till between the outcrops of solid rocks has given material to form a boulder-strewn beach and in favorable places the finer products have given rise to pebble and sandy beaches. On the west or more sheltered side of the island between the granite outcrops are a number of muddy coves. On this small island we have all the principal Littoral associations present. The distribution of these are found in fig. 4. This figure is a diagram of the shore of Greenings Island, with the vertical scale very much exaggerated. It has been made as though the shore were cut at the northwestern point and folded out so that this north- western point appears at each end of the diagram. The character of the shore is indicated. The island as a whole is protected from heavy surf by outlying islands, but the eastern end is exposed to the ocean swell from both the south and cast, and at times of storm- i- subject to quite a surf. The northeast shore and south shore are relatively unprotected at the east end, but become more protected toward the west. On the diagram the per cent, of pure white shells are placed in the locality in which the collection was made. An inspection of this figure will show that the most unprotected portion has the lighest colored snails, while the portion of the island 448 PROCEEDINGS OF THE ACADEMY OF [June, <9 III 111 o u f- <: tr o t>i3oy >ovig-- J.NIOJ /AN 0„ o5»oo7Q «&? OfoOf :i •:o: '3 °0^Ob •;;,-..,,"|o UJ § I CO. O D o-3 fen HI 2 C § 4i 03 +^ r£ --i P o C » O C3 .—. — « +s f-i if oo ° t; > c as ?J ,c i- 3 - on S C 83 <^> ,£ > O 0) c o CO c3 O as S 03 -C J5 E- -^ E o © g §.*§ .-< TO *^ in CO cj t3 o S O N - >h += as -a cc> ^ — ~ o & ^^ — ^ ^ J2 <-' e*" 83 S ~ 03 C j* i; 03 o3 83 83 C3 <-*< 8j • c^ © o " <=i . 83 — ( O S3 cc BO '5 ?- "J c c c - 2 8J _ 83 « 03 r r^ *i S Sb 03 no ,,H £ M +=> .-. n -4-5 ^ 4J 03 3 ^ ^- ^ C XI o ^-^ , o tn §1« 83 03 al-Q 83 *^ C ^^ d.22 03 ^3 03 ° 2 O 5 , ib oi » i ^ 03 03 |.Q bfi^ -2 % 03 ^ rf g C »^ • 03 a S c ag h4 ho 1916.] NATURAL SCIENCES OF PHILADELPHIA. 449 subject to the smoothest water has the darkest. This difference is very striking and the intermediate stations show intermediate ratios. This has led the writer to classify the shores according to the wa\ These are arbitrary divisions and of course every intergradation is found, but in most cases there is very little hesitation how a given -i ation should be described. If a great uncertainty exists, the station was placed in both classes. Sea cliff or surf exposed to the open sea. An ordinary row boat can practically never land with safety. Bay exposed to a moderate surf during high winds. Except at those times a small boat can easily land on the shore without danger of accident. Harbor so smooth that a row boat can practically always make a landing. In the tables which follow the stations nearest together are always compared. Table I. Condi- Station No. of Locality. tion. No. Individuals. Lt. White. Bakers Id Surf. 23 65 6.1 0 Bay. 24 167 20.7 6 Seal Harbor Surf. 54 176 2.8 0 Bay. 56 34 55.6 44 Cranberry Id Surf. 10 319 30 4.3 • Surf. 11 195 59 9.7 Bay. 13 204 15 5.7 • We can conclude that in general the snails on the most exposed situations are darker than those found in the bay. Table II. Condi- Station Xo. of % Locality. tion. No. Individuals. Lt. White. G—ngsId |ajbo, 3? lit S1 21! BuckelId gSo, iS Hi % % Bear Id Bay. 43 277 24 12| Harbor. 44 6< 10§ H Oronold Bay. 19 55 11 7 Harbor. 18 184 50 2, Southwest Harbor. Bay. 37 194 29| 19 Harbor. 36 196 I" I Harbor. 35 273 25£ 11 Harbor. 47 172 14$ 6J 450 PROCEEDINGS OF THE ACADEMY OF [June, If we combine the conclusion from Table I with Table II we see that snails in the exposed positions tend to be dark as well as those in the sheltered places, while those in the bay shore tend to be the lighter colored. The following table includes the results of collections made at stations separated by no barrier, near together, but on a substratum of different colored rocks. The numerous black basalt dykes that everywhere cut the red granite make a number of collections of this sort possible. Only a very few of the possible ones have been studied. Table III. Locality. Greenings Id., east end. Condi- tion. Rod rocks, 1000 ft, to Sta. 2, No. of Station. 25 No. of Indiv. 316 % Lt. 57 % White. 34 % Yellow. 6.3 Black rocks, 20 ft. to Sta. 50. 2 516 44 21 0 Black rocks, 500 ft. to Sta. 21. 50 160 37 22 0 Red rocks, 21 164 47 32 .6 Greenings Id., southwest end. Red rocks, 200 ft. to Sta. 28. 31 333 f 10 1.5 2.1 Black rocks, 50 ft. to Sta. 30. 28 247 14 6.7 1.2 Black rocks, 30 289 2.9 .4 3.8 Suttons Id. Red rocks, 110 ft. to Sta. 8. 9 159 35 2.5 7.5 Red rocks, 150 ft. to Sta. 7. 8 135 28 2.2 31.8 Black rocks. 7 123 19 0 18.7 In general, more light-colored snails are found on the red rocks than on the black rocks. The association of yellow forms with the environment is inconclusive. There does not seem to be any correla- tion from these few cases. Thirty-three collections from red rocks average 4% yellow. Fifteen collections from black rocks average 4.7% yellow. In this region there are occasional outcrops of a banded rock, a chlorite schist. That there might be a correlation between striped forms and schist is a possibility that may be investigated. The collections from the red granite given in the table are those made nearest to the chlorite schist. This comparison was not in mind when the collections were made, so the stations are often several miles apart. 1916.] NATURAL SCIENCES OF PHILADELPHIA. Ml. Table IV. Locality. Substratum. Striped Shells. Blue Hill Hay Chlorite schisl l.l Red granite Western Way ......Chlorite schisl 27 % Red granite1 (avrratic oi Is collec- t ions from this region) 1 1.-1% Western Way Chlorite schist 27 ' , Nearest Granite Station Red granite 18.")', The distance apart of the stations introduces so many other factors that with such meagre data no conclusions can be drawn. The writer expects that the results are really negative. The relative proportions of the imbricated forms from different localities are as follows : In the upper bays the water is much warmer than near the ocean. This warmth is indicated at Blue Hill by bathhouses being located along the beaches. Xone of the resorts farther down the bays have any, the water being too cold for bathing in the bay in those places. The upper bays are relatively shallow and there are muddy spots found on the rocky beaches between the rocks. Five stations in this region had imbricata ranging from 38% to 96%. In the middle bay region of Blue Hill Bay the water is deep and the rocky shores are clean. Xo imbricata were found in the three stations in this region. The western side of lower Blue Hill Bay is shallow, with many islands and ledges. Among these islands there are many mud flat- and the same conditions are found on the upper bay. Five station- had imbricata ranging from 9% to 30%. Near the islands separating the lower bay from the ocean the water is, in general, deep and the rocky shores clean. Five stations, 0-5^% imbricata. On the outer islands the surf, of necessity, keeps the rocks free from sediment. Two stations, 17-57%. In Somes Sound environmental conditions similar to those in Blue Hill Bay are found. The rocks are muddy in the harbors near mud flats and clean where wave action is possible and the water i- deep. If we except two stations at the Southwest Harbor steam- boat wharf, where the ratio of imbricata was 19% and 19.2%, respe ively, the average of thirty-five stations containing 7,119 individuals 1 Of these eighteen collections, four had over _'. ' , striped, one had ■'•. 452 PROCEEDINGS OF THE ACADEMY OF [June, was only .47%. The largest number found was but 3|% at any one station and that was on the rocks of a muddy harbor. The station in Somes Harbor farthest away from the ocean had but .6% imbricata. That there are other geographical factors is shown by the rarity of imbricata in the Somes Sound region. Very few are found in exposed situations on the Cranberry Islands and on Seal Harbor Head, situations exposed to the full effort of the surf. Except for a colony at the Southwest Harbor steam-boat wharf, in the whole Somes Sound region they are indeed rare. Out of 2,765 shells collected on Greenings Island but three were imbricated and these three were found at one station on the muddy west side of the island. However, in general, we can say that the imbricated forms are found in greatest abundance in exposed situations, as Duck Island and Long Island, and also in the most sheltered positions. Most of the varieties found in the Atlantic are also found in the forms inhabiting the north Pacific Ocean. Dall2 reports that the lamellated forms of Thais in that region are found best developed in sheltered harbors. The Atlantic lamellated forms we have seen may occur in sheltered as well as in exposed situations. As Thais is found in both the Balanus and the Mytilus Zones, is there any difference between collections made close together but in different zones? The an.swer to this question is summed up in the following table (Table V) compiled from collections made but a few feet apart, but in different zones. Table V. Imbri- Locality. Zone. Sta. Lt. Wt. Yel. St. cata. Greenings Id., eastern point Balanus. 2 44.5 21.3 0 ? 0 Mytilus. 50 37.5 22.5 0 14.4 0 ,Steam-boat wharf, S. W. H Balanus. 37 29.5 19. 17.5 1.5 19.0 Mytilus. 47 14.5 6.4 4.1 37 19.2 Stanley House wharf, S. W. H Balanus. 35 25.3 11 2.2 4.0 0 Mytilus. 34 21.4 4.8 0 5.3 0 (1) There are more light forms in the white Balanus Zone than in the dark Mytilus Zone. (2) There are fewer yellow forms in the dark Mytilus Zone. (3) Striped forms not conclusive. (4) Imbricated forms not affected. 2 Proc. U. S. Nat. Mus.t vol. 49, pp. 557-572. 1916.] natural sciences of philadelphia. 153 Natural Selection. Natural selection, we can assume, is most severe on Little Duck Island. Tliis little island, lying four miles out at. sea, is exposed to the surf on every side. The herring gull, one of the chief enemies of adult Thais, has a rookery on the island, and every summer thou- sands of birds roost there at night and have their nests. Everywhere regurgitated Thais shells cover the rocks, which tell a story of a struggle for existence. In collecting on this island for two hours but four hundred and twenty-nine living snails were found. These were discovered at the lower edge of the Mytilus Zone. All had been picked off the rocks above by the gulls. This collection is chiefly notable in containing a very large proportion of dark individuals, only 1.1 per cent, white were found. Nineteen per cent, were imbricated. It can be said with justification that where the struggle for exist- ence is greatest on the exposed islands and the muddy harbors selection tends to preserve the dark-colored and the lamellated forms. Conclusions. A study of the color varieties leads one to the conclusion that they are hereditary and that we are dealing with things that are probably unit characters. Even the development of lamella?, as in imbricata, are not modifications caused by induction that is caused by the direct action of the environment. As there are great differences between the ratio of the color varieties present in different localities, we assume that natural selection is acting. In the bay environment conditions are at an optimum. No mud film covers the Mytilus, and Balanus forms crusts over the rocks an inch to an inch and a half thick. Here Thais is most abundant. Five hundred can be gathered in ten minutes or even less. A handful can be gathered at one scoop. In the surf environment the barnacles do not form such thick crusts. On the harbor shore ice destroys the barnacles in the winter and a mud film covers the mussels. So that the barnacles are usually small and far apart, while the mussels are separated by mud from the rocks. Sand and mud are barriers to Thais. Although the surf environment and the harbor environment are the antithesis of one another, yet they have many effects on Thais that are similar. These effects are as follows: 454 PROCEEDINGS OF THE ACADEMY OF [June, (1) The curve of growth, fig. 2, shows that those in the surf environment at a given age are smaller than those from the bay- environment. (2) There is a tendency toward dark individuals. (3) There is a tendency toward lamellated forms. These studies show that natural selection has some determining action on the color varieties present. (1) It has been shown that the color of the rocks, whether dark or light, has an effect. (2) It has been shown that the white barnacle-covered rocks contain more light-colored ones than those on the mussel bed but a few feet away. (3) It has been pointed out that those living on rocks near mud flats are darker than on the more exposed points of the same islands. The present study must leave the question of the relation of the yellow forms and the striped forms to the color of their substratum yet unsettled. In general, however, there is a relation between the color and the environment. This relation is caused by natural selection and not by the direct action of the environment. List of Literature. Beard, J. 1S99. Principles of Animal Development. I. The Whelks Egg. Nat, Sci., XIV, pp. 131-137. Blaney, D. 1904. Proc. Boston Soc. Nat. Hist., Vol. XXXII, No. 2. Carpenter, W. 1857. On the Development of Purpura. An Mag. Nat, Hist,, 2d Series, Vol. XX. Cooke, A. H. 1895. Cambridge Natural History, Vol. Ill, The Mollusks, pp. 69, 90. Cooke, A. H. 1915. Proc. Mai. Soc. London, p. 193. Glaser, O. C 1905. Ueber den Kannibalismus bei Fasciolaria tulipa (var. distans), Zeit f. wiss. Zool., Bd. LXXX, p. 80. Gould, A., and Binney, W. G. 1869. Invertebrates of Massachusetts, 2d Ed., Boston, pp. 360-362. King, L. A. L., and Russell, E. S. 1909. A Method for the Study of the Animal Ecology of the Shore. Proc. Rov. Phvs. Soc. of Ed., Vol. XVII, pp. 225-253. Pelseneer, P. 1904. Le Mode de Nutrition des Embrvons de Purpura lapillus. Cong. Zool., VI, pp. 343-345. Robert, A. 1902. Recherches sur le developpement des Troques. Arch. Zool. Exp., 3 ser., X, No. 3. Shelford, V. 1913. Animal Communities in Temperate America. Univ. oi Chicago Press. Sumner, F. B., Osburn, R, C, and Cole, L. J. 1911. A Biological Survey ol the Waters of Woods Hole and Vicinity. Bull, of the Bureau of Fisheries, Vol. XXXI. Walter. 1910. Variations in Urosalpinx. Am. Nat., Vol. XLD , No. o26r October. 1916.] NAT! EtAL SCIENCES OF PHILADELPHIA. 455 NEW GENERA. AND SPECIES OF GASTROPODA FROM THE UPPER CRETACEOUS.1 BY BRUCE WADE. The extent of the Gastropod fauna discovered in the Upper Cretaceous of Tennessee and the remarkable state of preservation of the hitherto unknown generic types warrant the present pre- liminary account of some of the more interesting. The locality is on Coon Creek, in the northeastern part of McNairy County, in west-central Tennessee, and a somewhat detailed account has been published recently in the Johns Hopkins Circular. The horizon is in the lower part of the Ripley formation and hence some- what older than the classic Owl Creek fauna of the Ripley of Tippah County, Mississippi.2 Family CANCELLARIID^E. Genus MATAXA gen. now Etymology: (j.dra^a} cocoon. Type: Mataxa elegans sp. nov. Shell of medium size and thickness; spire obtuse, its altitude less than half the entire length of the shell ; protoconch large and smoothly polished, the earliest volutions for the most part submerged and increasing rapidly in size, thrice-coiled in the type-species; conch solid and slightly glazed, paucispiral, external sculpture subdued, axial sculpture subdued or absent; aperture broadly lenticular and produced anteriorly in a comparatively long recurved canal; outer lip expanded and dentate internally; parietal wall widely and heavily glazed; columella marked by two strong oblique plaits situated far in and behind two or more marginal plaits. This genus is proposed for a species represented at Coon Creek by perfectly preserved elegant shells and a species Narona eximia, 1 Published by permission of Dr. A. II. Purdue, State Geologist of Tennessee. 2 The writer wishes to acknowledge his indebtedness to Prof. E. \Y. Berry and Dr. J. A. Gardner, of the Johns Hopkins University, under whose guidance this work was done; to Dr. W. H. Dall and Dr. T. \\ . Stanton, of the U. S. Geological Survey, and especially to Dr. L. \Y. Stephenson, of the latter organization, who has been engaged for several years in the areal, stratigraphic, and faunal studies of the Cretaceous of the Embayment region. 456 PROCEEDINGS OF THE ACADEMY OF [July, described and figured by Stoliczka3 in 1867 from South India and referred to the Cancellariidse. It differs from Cancellaria, in gen- eral, by the development of a well-defined canal, by its lack of sharp and conspicuous cancellate sculpture, and further by its less acumi- nate spire. It differs from Narona, a subgenus of Cancellaria, in having a longer canal, a spire less acutely elevated, an anterior columellar plait more elevated than the posterior, instead of less so. Probably Mataxa is nearer the rare recent subgenus Massyla* than any other form in the genus Cancellaria, but in this comparison, too, there are generic and time differences so great that it seems advisable to assign the Tennessee and South Indian forms to a new genus. Mataxa differs from Massyla in possessing a thicker, stouter and more solidly built shell; in having a comparatively long recurved canal, and further in nuclear characters. The protoconch of Massyla is trochoid, while in the nucleus of Mataxa the early volutions are for the most part submerged. Mataxa elegans sp. nov. PI. XXIII, figs. 1, 2, 3. Description. — Shell of medium size, ovate in outline; spire less than half the entire length of the shell; whorls of conch three and a half in number; protoconch large, smooth and obtuse,' thrice coiled, the first and second volutions for the most part immersed and coiled in a single plane, the final whorl of the protoconch moderately elevated, increasing rapidly in size; surface of conch slightly glazed and inconspicuously sculptured; axials reduced to fine incrementals and one or two exaggerated resting stages; spiral sculpture of low, broad, flattened bands, eight in number upon the penultima of the type, the two posterior the widest and separated from one another by a wide and rather deep sulcus; body spirals very obscure, increas- ingly so toward the aperture, more than 30 in number, interspaces wider than the spirals and very shallow, excepting directly in front of the suture; suture impressed; aperture more than half the entire length of the shell, lenticular in outline and produced anteriorly into a comparatively long canal; outer lip marked internally by 10 or 12 regularly spaced Urate denticles; columella reinforced with two rather strong oblique folds a little less than half way between the base of the body and the anterior extremity of the aperture and a less prominent marginal fold and occasionally a fourth feeble plication 3 Stoliczka, F., Cretaceous Eauna of South India, Geol. Surv. India, p. 166. PI. XII, 1867. 4 Adams, H. and A., Genera of Recent Mollusca, 1855, vol. I, p. 278. 1911).] NATURAL SCIENCES OF PHILADELPHIA. l.",7 behind the margin; anterior fasciole rather short, moderately wide, emarginate at the extremity. Dimensions. — Altitude, 23.4 mm.; maximum diameter, 13 mm.; spiral angle, 57°. This form is well characterized by its somewhat buccinoid outline and rather low, obtuse spire, subdued spiral sculpture, the slightly flaring outer lip and plicate inner lip. This species is represented in the Coon Creek collection by two perfect specimens which are remarkable for shells as old as the Cretaceous on account of their state of preservation. The individuals possess a certain freshness of appearance and shell-color that remind one of recent gastropods lately recovered from the water. Occurrence. — Ripley Formation: Dave Weeks Place, on Cood Creek, McNairy County, Tennessee. Family VOLUTID^E. Geuns TECTAPLICA gen. nov. Etymology: tecta, hidden; plica, fold. Type: Tectaplica simplica sp. nov. Shell of medium size, thick and strong; rudely biconic in outline; spire about one third the entire length of the shell; apex acute; protoconch broken away, scar small; whorls very much appressed; sculpture dominantly axial ; aperture lanceolate, produced anteriorly into a slightly bent canal; outer lip simple; inner lip callous; parietal wall glazed; columella marked by three weak but well-defined folds, terminating far within the margin of the aperture. This genus is well characterized by a thick, strong and simple shell which has a columella marked by feeble folds. It is one of the most primitive of the Volutes and may be considered as ancestrally related to Volutilithes. It differs from Volutilithes in having a less elongate spire, which is flattish on the sides and not interrupted by pro- nounced shoulders. Volutilithes is typically spinose and has an inner lip usually well excavated and marked by prominent folds, which extend well out on the inner lip. Tectaplica simplica sp. nov. PL XXIII, fig. 4. Description. — Shell of medium size, biconic in outline; spire acuminate, less than one third the entire length of the shell; whorl- very closely appressed. six in number on conch; axial slopes flattish: protoconch broken away, -car small; external sculpture dominantly axial, consisting of ten prominent broadly rounded costae increasing toward the aperture, crossed by very many faint spiral ridg 458 PROCEEDINGS OF THE ACADEMY OF [July, summit of costse unmarked by lirse; posterior fasciole indicated by the weakening of the axial sculpture; sutures inconspicuous, aperture lanceolate, produced anteriorly into a long canal; outer lip simple; inner lip callous and parietal wall glazed, callus concentrated just below the posterior commissure of the aperture; columella marked by three well-defined but feeble folds terminating within the aperture; posterior fasciole indicated by abrupt constriction of incrementals. Dimensions. — Altitude, 35 mm.; maximum diameter, 13 mm.; spiral angle, 59° 20'. This very simple, primitive Volute is represented in the present Coon Creek collection by a single individual. The folds of this form terminate so far within the aperture that it is necessary to section the spire in order to observe the columellar plaits. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee: Genus DRILLUTA gen. nov. Etymology: A contraction of .the generic terms Drillia and Voluta. Type: DriUuta communis sp. nov. Shell strong and fusiform; spire elevated; whorls numerous, increasing slowly in diameter; protoconch very small and smooth; sculpture dominantly axial, the costse interrupted in front of the sutural line by a well-defined but rather narrow fasciole; aperttire lenticular, produced anteriorly into a long, gently recurved canal; outer lip broadly arcuate, simple within; inner lip calloused; colu- mella bearing one well-defined oblique fold, frequently with one or two minor folds behind it, all of which evanesce before reaching the aperture. This genus includes a well-defined and widely distributed group of the Volutidse, some of which are undescribed and some that have been described have been variously assigned to such genera as Drillia, Voluta, Fasciolaria and Fusus. DriUuta may be readily separated from Drillia by the absence of a posterior siphonal notch and further by the presence of columellar plaits on the Volute. The typical Voluta has a lower spire and numerous transverse folds. Fasciolaria has a more inflated body whorl and is not characterized by a well-defined posterior fasciole as is the case with DriUuta. Fusus on account of its smooth columella cannot be confused with DriUuta. There are two well-defined groups among the Drillutce, so it seems advisable to separate this group into two sections. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 159 Section A. New section. Type: Drilluta communis sp. nov. This section is characterized by shells of met limn size with well rounded axials and a variable number of columella plaits which terminate within the aperture. The spiral sculpture is very fine on the spiral whorls and young individuals but well-defined on i anterior part of the body of adult individuals, and lacking on the posterior part of the older whorls of such individuals. This section is proposed to include besides the Coon Creek species the form "Drillia ? distans" Conrad5 from Owl Creek, a closely related species from Corsicana, Texas, and a poorly preserved specimen from Bright- seat, Maryland. The descriptions and figures of Voluta lativittata Griepenkerl3 and Voluta canalifera (Favre) G. Muller7 indicate generic and sectional relations nearer to Section A of Drilluta than to any other forms that have been found in the literature. Drilluta communis sp. nov. PI. XXIII, figs. .5 and 6. Description. — Shell of medium size and fusiform in outline: spire elevated, its altitude approximately one-half the entire length of the shell : apical angle higher on the posterior part of the spire, becoming slightly lower on the younger whorls; protoconch very smooth and trochoid, coiled about three times; whorls of conch closely appressed and eight in number; both axial and spiral sculpture developed, the former dominant, axial costse rounded and abruptly elevated, 11 to 17 in number to the whorl, 14 on the penultima of the type, costae rlexuous, uniform in strength from the posterior fasciole to the anterior suture and a little less than half way down to the base of the body on the ultima; fasciole narrowed, indistinctly marked on the early whorls, defined in the later whorls by the abrupt disappear- ance of the axial costse; spiral sculpture of fine crowded impressed lines on apical whorls, becoming faint and almost disappearing on the medial part of older whorls, but reappearing as coarse, impressed lines on slope of body whorl, becoming faint and disappearing on anterior fasciole; suture impressed; body whorl sloping down smoothly into a broad pillar; aperture lanceolate, produced anteriorly into a very feebly recurved canal; inner lip callous; outer lip simple; colu- mella marked by one well-defined fold and one or two weaker posterior 5 Conrad, T. A., Jour. Acad. Nat. Sci., Philadelphia, 2d ser., vol. IV. p. pi. 46, fig. 49, 1860. •Griepenkerl, O., 1889, Palaeonlologische Abhandl., Band IV. Befl ■">, p. 93 (395), Taf. viii, fig. 1, 1889. 7 Muller, ('■., 1899, Abhandl. d. h'd-i. Preus.-geol. Landesanstalt, neue Folge, Hefl 25, p. 124, Taf. xvi, figs. L3, I l. 31 460 PROCEEDINGS OF THE ACADEMY OF [July, folds, all of which evanesce before reaching the aperture, plications invisible in the aperture. Dimensions. — Altitude, 62 mm.; length of aperture, 31 mm.; maximum diameter, 20 mm.; spiral angle, 40° on posterior whorls, decreasing to 25° on anterior whorls. This species is one of the most abundant and best preserved univalves at Coon Creek. It shows a considerable range in size and external ornamentation. Some of the young individuals exhibit a fine spiral sculpture over the entire length of the shell. The number of columellar plaits is variable. These terminate far within the body whorl, distant from the margin of the aperture, and in many indi- viduals are almost entirely obscured, although they are readily revealed by sectioning the spire. A comparison of this form with two other members of the section of the genus, one from Owl Creek, the type locality of "Drillia ? distans" Conrad and the other from Corsicana, Texas, indicates that the Coon Creek species is interme- diate between those cited. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. Section B. New section. Type: Drilluta major sp. nov. This section is characterized by a large, much elevated and elaborately sculptured shell. The whorls are abruptly shouldered. The posterior shoulder is marked by spinous regularly spaced varix- like projections. It is proposed for a well-defined group of Drillutce which include, besides the Coon Creek species, a species from Owl Creek and another from Brightseat, Maryland, which has been questionably referred to Fasciolaria* on account of the imperfect character of the material. The description and figures of Voluta magnified Griepenkerl9 and Voluta (Volutilithes) subsemiplicata (d'Orbigny) G. Mi'iller10 present generic and sectional relations which suggest this section of Drilluta. Drilluta major *p- nov. PI. XXIII, figs. 7 and 8. Description. — Shell thick and large, fusoid in outline; whorls closely appressed, seven in number and increasing slowly in size; apex 8 Gardner, J. A., Md. Geol. Surv., 1916, Cretaceous, Upper, p. 438, pi. xiv, fig. 11. 9 Griepenkerl, O., 1889, Palaeontologische Abhandl., Berlin, Band IV. Heft 5, p. 94 (396), Taf. viii, fig. 2. 10 Mliller, G., 1899, Abhandl. d. Kon. Preus. geol. Landesanstalt, neue Folge, Heft 25, p. 123, Taf. xvi, figs. 10-18-21. 1916.] NATURAL SCIENCES OK PIflLA DKI.IMI I A . ! I, | acute, broken away, but protoconch as indicated by the scar probably very small; whorls of spire slightly flattened dorso-ventrally, con- stricted posteriorly, ultima merging smoothly into a wide pillar; external ornamentation quite coarse and elaborate: axial sculpture of rounded quite strongly elevated costae waving backward along the shoulder, 11 to 14 to the volution, costae becoming shorter and less prominent on approaching the aperture, on young whorls costae reach from posterior fasciole to anterior suture, but become shorter anteriorly and occur only along the shoulder of the whorl: posterior part of whorl constricted and marked by a narrow posterior fasciole set with closely spaced spinose, varix-like processes, most of these processes broken away in type; spiral sculpture absent on first three apical whorls, becoming more prominent anteriorly until conspicuous on body whorl; more than thirty strongly elevated spirals on body whorl, spirals more widely spaced on medial portion of body whorl ; spirals along medial portion of body somewhat arcuate on type with most gentle slope anteriorly; body wThorl sloping gently into a broad pillar; aperture lenticular and produced anteriorly into a canal; inner lip calloused, parietal wall thinly washed; fold in front of one or two less prominent folds, all of which become obsolete before reaching the opening of the aperture. Dimensions. — Imperfect specimen: Altitude, 85 mm.: maximum diameter, 32 mm.; spiral angle, 30°. This magnificent species is represented in the present collection from Coon Creek by two individuals, both of which, while imperfect, yet show the essential characters of the shell. It is well characterized by the elaborate axial and spiral ornamentation, the very acuminate spire and further by the spinose varix-bearing posterior fasciole. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. Family FUSID^E. Genus FUSUS Lamarck. Subgenus A.NOMALOFUSUS subgen. nov. Etymology: avatpLaXos, irregular; fusus, a gastropod. Type: Fusus (Anomalofusus) substriatus sp. nov. Shell of medium size and elongate, fusiform in outline: spire acuminate and of approximately the same length as the aperture; protoconch naticoid and smooth, coiled about three times; axials most prominent ornamentation, costae irregular in size and spacing; spiral sculpture consisting of many fine elevated line of different 462 PROCEEDINGS OF THE ACADEMY OF [July, sizes which override axials; suture impressed, aperture lenticular and produced anterior^ into a canal; outer lip thickened and dentate within, broadly notched between suture and medial part of outer margin of aperture; inner lip thinly calloused, columella smooth and slightly sinuous. The nuclear characters, the sharp cancellate sculpture, and inter- mediately thickened outer lip which is broadly notched in front of the suture seem to assign this form to the rank of a subgenus under Fusus. This form bears some resemblance to Phos in general outline, but is much more slender. Phos is characterized by a columella which is much more sharply twisted. Anomalofusus has a longer canal than any of the Buccinidse and lacks the abruptly excavated columella, plicate in front, which is characteristic of Phos. Besides nuclear characters, Anomalofusus differs from Fusus in its shorter canal, and further by its thickened and notched outer lip. Fusus (Anomalofusus) substriatus sp. nov. PI. XXIII, figs. 9, 10, 11. Description. — Shell of medium size and elongate, fusiform in outline; spire acuminate and of approximately the same length as the aperture; whorls roundly shouldered, three to five in number on conch; protoconch naticoid and smooth, coiled about three times; external sculpture elaborate, axials predominating, costse well rounded and elevated, irregular in size and spacing, reaching from anterior to posterior suture on spiral whorls, but evanescing on anterior part of body ; spiral sculpture consisting of about 14 small primary elevated lirse and in each interspace there are from one to three very fine primary lirse, primary lirse lacking on a narrow band just in front of suture, both primary and secondary lirse override costse; suture impressed; aperture lenticular and produced anteriorly into a canal; outer lip thickened and dentate within, broadly notched between suture and medial part of outer margin of aperture; inner lip cal- loused; columella smooth and slightly sinuous. Dimensions. — Immature individual: Altitude, 17.5 mm.; length of aperture, 9.5 mm. ; maximum diameter, 7.5 mm. ; spiral angle, 35°. This elegantly sculptured gastropod is abundant at Coon Creek. There is a wide range in the maturity of individuals, some have only one whorl of the conch, while the older ones have five whorls. The protoconch is preserved and conspicuous on most specimens. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 163 Genua ORNOPSIS gen. i Etymology: opvi?, bird; o:',3»/<>c, burr. Type: Hydrotribulus nodosus sp. nov. Shell moderately large and solid, top shaped in outline; spire less than half the entire length of the shell; protoconch scar small, sculp- ture vigorous, the axials undulatory, the spirals more sharply defined; aperture pyriform and produced anteriorly into a narrow recurved canal; outer lip expanded and abruptly constricted at the base of the body, dentate within; parietal wall heavily glazed, sometimes bearing a tooth-like process directly in front of the posterior com- missure; inner lip excavated and calloused, reflected anteriorly, con- 1 • n (5 . ] NATURAL .SCIENCES OF PHILADELPHIA. 165 cealing entirely the umbilicus; edge of pillar flattened at entrance of canal, simulating a fold. This genus is characterized by a fairly low-spiral angle; vigorous rugose, cancellate sculpture; a much inflated body and further 1- much excavated and reflected inner lip, which conceal- an umbilicus. Besides the Coon Creek species it is represented by an undescribed species from Owl Creek, Mississippi, and another from Brightseat, Maryland, and further by a species in the Senonian of Aix-la-Cha- pelle. Germany. The German species was first described by Ntuller in 1851 and assigned to the genus Rapa. Since then it has been variously assigned by other palaeontologists to such genera as Fusus, Pynila, Hemifusus, Pyropsis and finally to Tudicla by Holzapfel,11 who discussed the species in 1888. A study of the description and figures of the German form, together with the Coon Creek species and specimens from the Maryland and Mississippi localities, indicate- that these species belong to a well-defined group, and it seems advisable to propose for their reception a new genus Hydrotribulus of the family Buccinidee. In general aspect this genus resembles Pyrifusus, but differs from it in having a shorter recurved anterior canal and a pillar which is flattened and recurved in a unique manner at the entrance of the canal. Tudicla has a much flatter spire, a more globose body and a much more abruptly constricted, longer and straighter canal. It differs from Strepsidura in characters of the anterior canal and aperture and further by its characteristic rugose cancellate sculpture. Hydrotribulus nodosus sp. nov. PI. XXIV, figs. 4 and 5. Description. — Shell fairly large and very heavy with a rugosely cancellate sculpture; top-shaped in outline; spire rather low; its altitude less than the length of the aperture, sides converging at an angle of 70 degrees; whorls of conch five in number and rapidly increasing in size to a much inflated body; whorls of conch obliquely shouldered, the peripheral angle of the spire falling in front of the medial horizontal; sculpture vigorous, both axial and spiral, restricted almost entirely to the area in front of the periphery; axials elevated and broadly rounded, sixteen in number on the body whorl of the type, subequal in size and regularly spaced; spiral sculpture of broad, elevated fillets, most prominent on the body; subnodose at the intersections of the axials which they override. "Holzapfel, E., Palaeontographica, Band XXXTV, p. L06, Taf. xi, figs. 1-7. 466 PROCEEDINGS OF THE ACADEMY OF [July, two in number on the whorls of the spire and four on the medial portion of the ultima, separated by shallow channels of approximately the same width as the fillets; shoulder sloping at an angle of about 45°, very feebly convex; sculpture with retractive undulations corresponding in number and proportion to the axials with an obscure secondary liration and revolving a little behind the periphery; base of body and pillar threaded with flattened spirals which become increasingly narrow anteriorly; suture quite deeply channeled, undulated in harmony with the preceding volution, body whorl constricted rather abruptly into a broad pillar; aperture pyriform. produced anteriorly into a narrow canal; outer lip broadly expanded; crenulated at the margin and feebly cordate within, the cords restricted to the margin and corresponding in position with the interspiral areas; inner lip broadly concave, non-plicate; parietal wall heavily glazed and bearing an obscure tooth directly in front of the posterior commissure; edge of pillar flattened at the entrace of the canal simulating a fold, canal sharply recurved, moderately long and narrow with parallel proximate margins; umbilicus closed by the reflected inner wall of the aperture but indicated by a depres- sion between the callus and the anterior fasciole. Dimensions. — Altitude, 44 mm.; length of aperture and canal, 28 mm.; maximum diameter, 32.4 mm.; spiral angle, 70°. This elegant species is represented in the Coon Creek collection by perfectly preserved specimens. The species is characterized by the obliquely shouldered whorls, the prominent subnodose intersec- tions of the banded spirals and the undulatory axials, further by the low spiral angle and outline of cross-section of body. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. Family EUOMPHALlD^l. Genus HIPPOCAMPOIDES gen. nov. Etymology: i-7tuy.ap.7:o$) sea-horse; eldo?y shape. Type: Hippocampoides serratus sp. nov. Shell rather small, flattened or feeble apically; widely and deeply umbilicate; protoconch minute, planarboid, paucispiral; whorls of conch relatively few, increasing rapidly both in diameter and altitude toward the aperture; external surface usually smooth; peripheral margin acutely angulated, often sharply serrate; aperture holo- stomous, umbilicus funicular, the outer margin acute, conspicuously produced anteriorly. 191*).] NATURAL SCIENCES OF PHILADELPHIA. 167 This flattened form is assigned to the familj Euomphalidae because of its flat spire, its dee)) wide umbilicus, the outer margin of which is produced conspicuously and further on account of the angular peripheral margin. Hippocampoidcs resembles Discolx lix somewhal . but differs from it in having a protoconch not inverted and further in not having a whorl with a quadrate cross-section. It may be separated from Straparollus by the height of the spire and cross- section <>f body whorl. Hippocampoides serratus ~i> nov. PI. XXIV. figs. 11, i_\ 13. Description. — Shell rather small, flattened or very feebly convex, apically concave laterally, the altitude increasing toward the aperture, profoundly umbilicate; protoconch minute, planarboid depressed below the plane of the initial whorl of the conch, the one and one- half component volutions rather loosely coiled and approximately uniform in diameter, line of demarkation between conch and proco- conch indicated by a slight but very abrupt increase in the diameter of the whorl; conch thrice coiled, the whorls increasing regularly and quite rapidly in diameter; external surface smooth and probably polished in the original state; peripheral keel acute, sharply and, on the final half turn, profusely serrate; the indentation nearest the aperture running almost half way to the suture line; the deepest of the serrations coincident with pronounced resting stages so the last half turn seems to be made up of a series of overlapping tri- angular plates; suture line rather deeply impressed; aperture semi- elliptical in outline, the aperture half again as great as that of the body whorl at its initiation, but less than half that of the body whorl at its close; peristome adnate along the body wall, very feebly emargi- nate both at the peripheral and at the umbilical keels, approximately straight between the notches, umbilicus very wide, profound, persistent to the apex, funicular, the outer margin acute, probably serrated; area between the peripheral and umbilical keels quite symmetrically concave. Dimensions. — Altitude. 11 mm.; length of aperture. 5 mm.: maximum diameter. 19.2 mm. This species is remarkable for the auriculate outline of the apical aspect, the deep serrations of the periphery, the rapid increase of the altitude of the shell toward the aperture, the lateral concavity and the profound umbilicus, approximately half as wide as the entire shell and margined by an acutely angulated keel. The edge of the keel has been macerated, but there is evidence that it was quite strongly serrate. 468 PROCEEDINGS OF THE ACADEMY OF |July, Occurrence. — -Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. Family TURBINIDSE. Genus SCHIZOBASIS gen. nov. Etymology: *%%£&, to split; /?«<"?, base. Type: Schizobasis depressa sp. nov. Shell of medium size, thick, porcellaneous, depressed and globose, very low and smoothly rounded; protoconch lost in type species; conch paucispiral, the component whorls increasing regularly and rapidly in diameter; sculpture coarse and dominantly spiral; sutures obscure; aperture circular, interrupted posteriorly by a slight shallow siphonal notch and anteriorly by a slit which marks the entrance of the anterior canal; outer lip not thickened, simple within; inner lip excavated, heavily reinforced; anterior canal rather short with the parallel proximate margins distorted so that it appears as a narrow slit cutting across the base of the shell directly at right angles with the axis; callus almost filling the umbilicus; umbilicus imperforate, the umbilical region spread out in a trigonal area and flattened against base of the columella, from which it is separated by a profound sulcus; depressed umbilical keel marked by growth stages or often poorly defined varices. This genus is characterized by depressed spire and by a peculiar anterior canal which is short and deep and at right angles to the axis of the shell and resembling a slit in the anterior part of the aperture. It does not seem to be near anything heretofore described, and it has been assigned to the family Turbinidse only after some hesitation. The Turbinidse have a much depressed shell and sculptural and nuclear characters much like Schizobasis, but none of that family possess the short, well-defined canal which characterized this new genus. The recent Turbo comutus, which is common in the Indo- Pacific, has a very shallow anterior canal. The genus Sargana of the Thaisidse has a much depressed spire, a shallow, posterior notch and a narrow anterior canal inclosed in an umbilical keel which is varicose and altogether possesses points analogous to Schizobasis. Sargana has an entirely different sculpture and a much produced anterior canal which are family characters, probably great enough to bar Schizobasis from the Thaisidse. Turbo differs from Schizobasis in being nacreous and in having no well-defined canal. There is an undescribed species of Schizobasis that occurs at Eufaula, Alabama. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 169 Schizobasis depressa sp. nov. PI. XXIV, tins g, 9, LO. Description. Shell of medium size, thick, porcellanous, depree and globose, spire very low and smoothly rounded, rising slightly al>ove the body whorl; protoconch broken away in type species; conch paucispiral, the component whorls three and one half in number, increasing regularly and rapidly in diameter, outer wall of mie and one-half whorls of the apex broken away from spire of type; sculpture coarse and dominantly spiral, seven low, round spirals on body whorl, evanescing rather suddenly on body near aperture of adult, posterior spiral less rounded and very near posterior suture, obscuring suture line, interspiral spaces much narrower than spirals; a deep spiral sulcus at base of body between anterior spiral and umbilical keel; spiral sculpture consists of irregularly occurring unequal costse shown on top of spirals and absent in interspiral -paces; costse receding anteriorly, parallel to outer margin of aperture, aperture circular, interrupted posteriorly by a slight shallow siphonal notch and anteriorly by a slit which marks the entrance of the anterior canal; outer lip simple: inner lip excavated, heavily rein- forced; anterior canal rather short with parallel proximate margins distorted so that it appear- as a narrow slit cutting across the base of the shell directly at right angles with the axis; callus almost filling the umbilicus; umbilical keel showing two poorly defined varices; umbilical region spread out in a trigonal area and flattened against the base of the columella. Dimensions. — Elevation, 18.-4 mm.; maximum diameter, 23.3 mm.; spiral angle, 125° 40'. The type of this very interesting genus is represented in the Coon Creek collection by a single perfectly preserved specimen. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. Family DELPHINULIDiE. Genu> URCEOLABRUM gen. nov. Etymology: urceus, jug; labrum, lip. Type; Urceolabnun tuberculatum sp. nov. Shell small and porcellanous; trochoid in outline with a con- spicuous aperture; apex acute, protoconch broken away in type species, but scar small; sculpture cancellate, often tubercular at the intersection of spirals and axial-; suture impressed; aperture circular and much thickened around the rim, umbilicus wide and deep. This genus is proposed for a well-defined group of form- which are 470 PROCEEDINGS OF THE ACADEMY OF [July, characterized by a conspicuous circular reinforced aperture, a pro- found umbilicus, and an elevated cancellate spire. Besides the Coon Creek species two others are known, an undescribed species from Eufaula, Alabama, and a species described by Miiller in 1851 from Aachen beds of Vaals, Germany, and referred to the genus Scalaria. The same species was referred to Liotia by Holzapfel in 1888.12 This genus differs from typical Liotice which occur in the Coon Creek strata in having a more elevated spire, a circular rein- forced aperture and further by a profound umbilicus. In general outline there is some resemblance to Delphinula, but Delphinula has a nacreous interior and an aperture which is not reinforced or circular. Urceolabrum tuberculatum *p nov. PI. XXIV, figs. (3 and 7. Description. — Shell small, solid, porcellanous and ornately sculp- tured; spire elevated and acute; protoconch scar small; whorls circular in cross-section and four in number; external ornamentation elaborate, axials dominant, costae 14 in number on penult equally spaced and evanescing on base of the body ; spirals forming 5 rows of tubercles at intersection with costae on body whorl, interspiral space at base of body rather wide, an isolated row of tubercles on anterior margin of the umbilicus; suture impressed and crenate; aperture circular, peristome heavily reinforced and calloused resembling mouth of a jug, rim of aperture half as wide as opening; umbilicus profound and funicular. Dimensions. — Altitude, 5 mm.; width of aperture, 1 mm.; maximum diameter of body. 3.4 mm.; apical angle, 60°. This elegant little species is hard and well preserved, being rather common in the Coon Creek sediments. It may be separated from the Eufaula species by the fact that the Eufaula form has fine secondary lirse between the primary spirals and on the band at the base of the body whorl. It differs from the German species of this genus13 in having sharper axials and tubercles at intersection of costae and spirals; the German form has radial lines on the reinforced aperture, while aperture of the Tennessee form is smooth. Occurrence. — Ripley Formation: Dave Weeks Place, on Coon Creek, McNairy County, Tennessee. 12 Holzapfel, E., 1888, Palaeoulographica. Band XXXIY, p. 170, Tai. xviii, figs. 3-7. 13 Holzapfel, E., 1>>>>s. Inc. cit. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXIII. WADE: NEW CRETACEOUS GASTRCPCLA. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXIV. WADli: NEW CRETACEOUS GASTROPODA. 1916.] NATURAL SCIENCES OK PHILADELPHIA. 171 Explanation- of Plates XXIII and XXIV. Plate XXIII.— Fig. 1. — Mataxa elegans gen. el sp. nov. Rear view, x 2. Fig. 2. — Same. Apertural view. X 2. Fig. 3. — Same. Apical view. X 10. Fig. 4. — Tectaplica simplica gen. el sp. nov. Apertural view. Nat. Bize. Fig. 5. — Drillulii communis gen. el sp. nov. Apertural view. Nat. size. Fig. 6. — Same. Rear view. Nat. size. Fig. 7. — DrilhUa major gen. el sp. nov. Rear view. Nat. size. Fig. 8. — Same. Apertural view. Nat. size. Fig. 9. — Fusus substriatus sp. nov. Apertural view. X 2. Fig. 10. — Same. Hear view. XlJ. Fig. 11. — Same. Apical view. X 10. Plate XXIV. — Fig. 1. — Ornopsis glenni now. e1 sp. nov. Apertural view. Nat size*- Fig. 2. — Ornopsis elerata gen. et sp. nov. Apertural view. X 1£. Fig. 3. — Same. Rear view. X 1£. Fig. 4. — Hydrolribuliis nodosus gen. et sp. nov. Apertural view. Nat. size. Fig. 5. — Same. Rear view. Nat. size. I .%. 6. — Urceolabrum tuberculatum gen. et sp. nov. Apertural view. X 0. Fig. 7.— Same. Rear view. X 0. Fig. 8. — Schizobasis depressa gen. et sp. nov. Rear view. Nat. size. Fig. 9. — Same. Apertural view. Nat. size. Fig. 10. — Same. Basal view. Nat. size. Fig. 11. — Hippocampoides serratus gen. et sp. nov. Apical view. X 2. Fig. 12. Same. Basal view. X 2. Fie. 13. — Same. Lateral view. X 2. 472 PROCEEDINGS OF THE ACADEMY OF [August. A POSSIBLE PARTIAL EXPLANATION OF THE VISIBILITY AND BRILLIANCY OF COMETS. BY DANIEL M. BARRINGER. WITH AN ADDENDUM BY ELIHU THOMSON. From a careful study of the so-called "shale-ball" meteorites described in my previous papers on the Meteor Crater of Arizona, I am impelled to make a suggestion that their peculiar and more or less uniform shape may give us a hint of at least a partial cause of the brilliancy of the head of comets and the gradually fading visi- bility of their tails. It should not be forgotten that these so-called "shale-ball" meteorites have never before been described, and we would know little of their original shape were it not that the several hundred which have been found by us have been dug out of exceeding finely pulverized silicious dust, so abundantly found with larger rock fragments on the rim of the crater. This finely divided silicious dust is due to the pulverization of a portion of the 1,000-foot white or gray sandstone stratum during the passage through it of the meteoric mass which, by its impact with the earth, as is now proved, made the crater described in my previous papers. The great mass of this exceedingly finely pulverized "silica," so-called, most of which is so fine that it will easily pass a 100-mesh screen, is practically impervious to water, hence these shale-ball meteorites in many cases have retained their original shapes. As previously stated by me, they have no sharp corners, but are, generally speaking, either round, oval or pear shaped, and in fact closely resemble in shape ordinary river gravel. In nearly all cases oxidation has penetrated from the outer surface inward for varying distances, but in most cases not sufficiently far to make it impossible to know what the original shape of the iron mass was when it fell to the earth and was imbedded in the outpouring from the crater, like flour from a barrel, of the finely divided silica dust commingled with rock frag- ments. In all of the many thousands of iron meteorites found around the crater only one aerolite, or perhaps more accurately siderolite, has been found. This was found by me on June 24, 1905. Inasmuch as by far the greater part of this aerolite was stony in nature, it had 1916.] NATURAL SCIENCES OF PHILADELPHIA. 17'. yielded hut very slightly to oxidation since it fell upon the earth. It is interesting to note, however, that all of its edges were rounded as if they had been subjected to abrasive action, but it. was n<>t. as perfectly rounded or oval in shape as the great majority of tin- iron meteorites. If it fell at the same time as the cluster which made the crater, as I now think is probable, possibly this was due to the fact that it. had been gathered up by the iron-headed comet in its passage through space and had not been a member of the cluster for as long a time as its iron companions. The abrasive action between these masses of meteoric material composing the comet's head, even though it is less than any grinding action that we can conceive of owing to the fact that the mass travels through the ether of space, has, I would suggest, something to do with the visibility of comets. Inconceivably gentle abrasive action may be sufficient to wear off infinitesimal particles of matter, considering the enormous periods of time available. If so, may it not be that the attrition between the masses of meteoric material, for example masses of iron, not only possibly causes a disturbance of the ether where the grinding or milling action takes place, but literally fills the space in and around the head of the comet with exceedingly fine particles of cometary dust? May not these fine particles of matter, possibly electrified, also form the so-called tail as they are swept away from the main body of the comet travelling through space? The explanation of the tail pointing away from the sun is somewhat difficult on this theory, but the difficulty disappears if we can conceive the particles to be so infinitesimally small and so wanting in weight as to be affected by the light waves of the sun and to be driven by them in a direction away from the sun. There can be no doubt that all the so-called " shale-ball'' iron meteorites so far discovered by us in the material forming with the upturned edges of the limestone and sandstone strata the rim of the Arizona crater show evidence of what seems to have been abrasive action. The inference is unavoidable that they have been subjected, during perhaps billions of years, to such action, incon- ceivably slight, it is true, but nevertheless sufficient to finally reduce them to the shapes in which we find them. It is evident that the abrasion was not produced by their passage through our air. May they not be in fact "celestial cobblestones," and may not the milling action when they rub against each other, even very gently, account, in some way, not perfectly understood, for not only what we term the brilliant head of a comet but tor its tail as well? 474 PROCEEDINGS OF THE ACADEMY OF [August, This is only a theory, but the inference seems to be justified. The rounded shape common to this kind of meteorites is a fact which must be explained, and the only reasonable explanation is that it has been due to mutual abrasion. The largest mass of meteoric iron of this description so far found by us weighed over 100* pounds. I have no doubt, however, that many of them com- posing the cluster which formed the head of the very small comet, which produced by its impact with the earth what we know as Meteor Crater, were much larger. Evidence that many others fell upon the earth around the crater is to be found in the fact that the plain round about is strewn with what is locally known as " iron-shale," certainly due to the decomposition of these "shale-balls," it being merely oxidized meteoric iron. A great many thousand pieces of this "iron-shale" have been found around the crater, on all sides of it, but most abundantly to the N.N.E., the direction from which the cluster is supposed by those of us who now recognize the true origin of the crater to have approached the earth. This variety of meteoric iron, as I have previously stated, decomposes very much more rapidly than any other meteoric iron ever discovered, owing to the fact that it contains appreciable quantities of chlorine. That thousands of "shale-balls" were strewn about the crater a moment after the impact there can now be no reasonable doubt. It is a remarkable fact, however, that no piece of the so-called "iron- shale" has ever been found which is not slightly curved, similarly to the "iron-shale," found on the outside of the slowly decomposing "shale-ball" meteorites which lie deeply imbedded in the silicious' dust forming a great portion of the rim of the crater. Most of the latter have iron centres and the "iron-shale" surrounding them are merely the layers of iron oxide still adhering to the central iron mass. When we compare the two, the pieces of "iron-shale" found on the surrounding plain show conclusively by their shape that the so-called "shale-ball" meteorites from which they were derived were originally more or less globular in shape. Saturn's rings are now believed to be composed of meteorites, but upon the theory which I have advanced there is possibly no milling or grinding action taking place between them such as may take place for some unknown reason in the head of a comet. I may, however, easily be in error as to this. If the lunar craters and the Arizona crater have had a common origin, as now seems very probable, there can be no doubt that our knowl- edge of cosmogony has been greatly advanced by the discovery of the 1916.] NATURAL SCIENCES OF PHILADELPHIA. 475 origin of the Arizona crater and that there is much stronger reason now than ever before to believe in the general correctness of Chamber- lin's and Moulton's theory of the building up of planetary systems. It is calculated that some 2,000,000 meteorites reach our atmosphere every twenty-four hours, and it is highly probable that in the early history of the earth it was abundantly bombarded by cometary bodies, that are probably, after all, merely masses of meteoric material which have gotten together and in some way not known to us have assumed orbits of their own. It would seem, however, that most of them, as well as most of the meteoric material originally forming the nebula out of which our solar system has been built up, have long since been gathered into the sun, its planetary bodies or the moons revolving about them. Our moon, having been without an atmos- phere for perhaps a great many millions, if not billions, of years, show- evidences of some of the more recent accretions to its mass, outside of the more or less steady rain of cosmic dust. Its numerous craters probably merely represent the gathering in of cometary bodies or clusters of meteorites, for they are apparently exactly similar to our Arizona crater, except that most of them are vastly larger. If this theory of the building up of solar systems be correct, is it not wonderful to reflect that when one holds in the hand one of these pieces of meteoric material he is probably holding something older than our sun, our own earth, or any of the planetary bodies which with their moons revolve about the sun? That is to say, he is literally holding, practically unchanged through countless eons of time, a part of the nebula out of which our solar system was con- structed and which nebula in turn probably represented the wreck- age of a previously existing system. Addendum by Elihu Thomson. The following comments on the above paper were received by Mr. Barringer from Prof. Elihu Thomson: I have your letter of June 14, enclosing a communication which you are thinking of sending to The Academy of Natural Sciences of Philadelphia. I think there is little question that the explanation put forward in your paper as to the rounded shape of the shale-ball meteorites is the true one. I have, in fact, often spoken of the inevitable readjustments that may take place in a small cluster revolving around the sun and the attrition between the parts as accounting for the steady production of very finely divided material 32 476 PROCEEDINGS OF THE ACADEMY OF [August, driven away from the nucleus by the pressure of light. In fact, I have talked of this very thing with the astronomers, and they have not raised any objections to it. I take it that what happens is about this — at least, this is in accordance with my idea of what happens: When the comet is far removed from the sun and consists, as it probably almost always does, of a nucleus of fairly heavy pieces surrounded by lighter masses, they are, on account of the cold of space, at a very low temperature, and what little gravitational effect is produced is just sufficient to prevent them being scattered. They are free, at the far distance from the sun, from anything like tidal action. The cluster might even be revolved without being distorted by disturbance of the parts. Should they pass within range of the gravitational effect of Jupiter and have the path slightly disturbed thereby, there would necessarily be (by the slipping of the parts over each other) an attrition or grinding action taking place, and this would continue so- long as the body was within the range of the disturbing planet. The same would be true of the cometary clusters passing towards the sun and around it (making a so-called perihelion passage), except that there would be some little difference. In this case, the particles of fine material, the result of the grinding, and held in the cluster, would now be free. The manner of this freeing can easily be understood. The face of the mass of the cluster on the side toward the sun would undergo a warming or heating process. This would result in the evolution into the vacuous space of whatever vapors or gases, however rare they might be (originally occluded in the face of the masses of the cluster), especially from the warmed surfaces. This would amount to a flowing of gas or evolution of gas on the side toward the sun which would lift the dust particles away from the mass, and the very fine particles would thus be free to be driven back by the light pressure to form a tail. It is an old idea that during this process if the sun were highly electrified electrical actions would take place, electrical readjustments to the increasing actions of the sun, but I think it doubtful whether the tail is much, or anything, of an electrical nature, for the reason that the vacuous space in which the tail moves is so high a vacuum that no conduction would be possible. I am inclined to think that whatever actions of temperature or electrical actions occur would be practically within the nucleus or near it. The spectroscope shows that as the comet approaches the sun gas is actually evolved; and the spectra of cyanogen and carbon monoxide are common in comets, and possibly also hydro- 1916.] NATURAL SCIENCES OF PHILADELPHIA. 477 carbon spectra in some cases. The luminosity of the tail, which, it must be borne in mind is extremely low, according to any way of rating it, is. I think, amply accounted for by the greal depth of >i>ace in which the fine matter exists and the solar light of high intensity reaching this fine matter: a pure case of diffusion from fine particles. As to cosmic dust not reflecting sunlight as does fine cometary dust, the following explanation, it seems to me, is ample. We sec things by contrast. Even if there was a slight luminosity in space, it would -imply form a background for the comet's tail, which would be more luminous and more dense in dust. The astronomers have long sus- pected a very thin veil of dust in the sky, of dust under illumination* The sky is not, in fact, absolutely black. It is black by comparison. Of course, it cannot be expected that ordinary meteorites should ever be seen in the sunlight. They are too small or too far apart. Only when they reach a considerable size do they produce any impression as single spots of light. Witness the asteroids or the little planet Eros, which probably is miles in diameter and yet is difficult to detect. My idea is that the continual readjustment of the position and relation of the parts within a small cluster, or even within a large cluster forming a large comet, will account for practically all that occurs in the head of the comet and in the tail. This tail will always point away from the sun. It will curve backwards, for although the particles move in a straight line from the sun, it will curve backwards owing to the progress of the nucleus around the sun. The tail will continue to be formed so long as the disturbing actions occur, and it will fade away as the comet gets so far from the sun as not to be distorted or disturbed. If the comet is not otherwise lost, this action will continue on from the action of the sun with a constant reduction of mass and the final diffusion of the material composing the comet. Your statement in relation to the aerolite of a stony nature which you found is very interesting to me, as I had not heard that you had found any such stony meteor. It is quite easy, how- ever, it seems to me, to account for it as a survival of perhaps many others present in the cluster. The stony meteorites will naturally be sifted out from the iron meteorites in the flight of a meteor through our atmosphere. They would not only be crushed by air pressure on their relatively greater area per unit of mass, but on account of their lower specific gravity they would not have the ability by momentum to force their way as far. Their relatively 478 PROCEEDINGS OF THE ACADEMY OF [August, low momentum and greater air resistance in proportion to their mass would make them early losers in the race, while the air pressure encountered would usually smash them into small pieces. I think it quite probable that the stony matter of the earth is merely an outer layer over an iron centre, and in the smash up of any body due to partial collisions or actual collisions the stony matters must be dissipated, as well as the iron masses, to be gathered up again by the approach near to a large gravitating body like a planet or a sun. Your expression of "celestial cobblestones" is very expressive and pertinent to the case of the shale-ball masses, and your observation that pieces of apparently broken-up shale-balls are curved indicates a similar origin for all of them. The flight of a cluster of small and large meteoric masses, more or less rounded through our air, would naturally be a sifting-out process, as the smaller bodies would lag behind in the flight. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 479 THE NERVOUS SYSTEM OF CREPIDULA. ADUNCA AND ITS DEVELOPMENT. BY HAROLD HEATH. The genus Crepiduh in the vicinity of Monterey Bay, California, is abundantly represented by the members of two species, C. adunca and C. nivea. In each case the young are retained in capsules within the mantle cavity of the parent, and are liberated when they have attained the form of the adult and are in possession of all the definitive organs with the exception of those belonging to the reproductive system. It is accordingly readily possible to secure extensive series of embryos and to follow the course of development from the ovum to the adult. The embryology of several species of this genus has been studied in great detail by Conklin ('97),1 and as a result it is clearly established that they all pursue essentially the same develop- mental path until they reach the veliger stage or a corresponding point where a free-swimming larva is lacking. Beyond this point nothing is known. In connection with a comparative study of the nervous system of several families of mollusks, I have examined adults of the two above-mentioned species of Crepiduh. with considerable care and have traced its development in C. adunca. In view of the fact that Paludina vivipara as worked out by Erlanger ('92)2 is the only other gastropod whose development in this respect is known, the results possess an enhanced degree of interest. The central nervous system of the adult C. adunca is located in the base of the neck, in a spongy mass of connective tissue, placed between the pedal musculature and the overlying mantle cavity. It conforms to the highly centralized type characteristic of the monotocardia generally, with cerebral, pleural and pedal ganglia closely appressed. In several instances, especially in half-grown individuals, the line of demarcation between the cerebral and pleural ganglia is comparatively slight; on the other hand, the pedal ganglia are invariably sharply defined. All are globular bodies of essentially the same size and, as indicated previously, are united by compara- tively short commissures and connectives. 1 The Embryology of Crepidula, ./nun*. Morph., Vol. 13. 1897 2 Zur Entwickhm^ von Paludina vivipara, Morph. Jahrb., Vol. 17. lv 480 PROCEEDINGS OF THE ACADEMY OF [Sept., Of the more peripheral portions of the nervous system the buccal ganglia are situated in the head region slightly attached to the dorsal face of the radular musculature. From the commissure uniting them two delicate nerves are given off, which course ven- trally but rapidly become lost to view among the surrounding muscle bundles. The connectives to the cerebral ganglia arise from the forward borders of each buccal ganglion, extend laterally and ante- riorly over the buccal musculature for a short distance, whereupon they pass between some of the bundles of radular muscles to the ventral side of the head. In this position, at each side of the under surface of the radula, they pursue a course posteriorly to the cerebral ganglia. Immediately after reaching the ventral surface of the head they are united by a delicate commissure. Each cerebral ganglion gives rise anteriorly to one or two nerves, in addition to the buccal connective, which innervate the head. Where one nerve appears it soon divides into an outer and inner branch destined to supply the tentacle and lips, respectively. The relatively strong tentacle nerve gives off a short, stout nerve to the eye and, after dividing, extends far towards the tip of the tentacle. The inner, or lip nerve, passes by a fairly direct path to the dorsal side of the head, and ultimately breaks up in the tissue about the mouth. The pedal ganglia usually develop four pairs of nerves. The most anterior, springing from the forward border of the ganglion, extends through the pedal musculature to the forward section of the foot, where each branches repeatedly and becomes lost among the muscle fibres. Two other pairs extend ventrally and likewise soon disappear in the compact pedal musculature. In addition to these three pairs, each pedal ganglion gives off from its antero-dorsal surface another nerve destined to supply the base of the neck. On the left side of the body the bundle is comparatively slender and soon becomes lost to view at the junction of the head and mantle. On the right side the corresponding branch has the same size and apparent distribution in lately hatched individuals, but at a later period it becomes greatly enlarged and supplies the penis, which arises relatively late in life. It may be added that the pedal ganglia are united by two commissures, the usual heavy one and another, much more delicate, posterior to it. The elements of the visceral loop comprise three clearly denned ganglia, the sub-intestinal, the supra-intestinal and the visceral. The first named is a globular body of approximately the same size 1916.] NATURAL SCIENCES OF PHILADELPHIA. 481 as the overh iug right pleural ganglion, to which it is attached by a short connective, thus producing a dextral zygoneury, while a somewhat larger connective, passing ventral to the pharynx, unites it with the left pleural ganglion. The supra-intestinal ganglion is a fusiform mass united by a short connective to the right pleural. The visceral ganglion, in contact with the ventral floor of the mantle cavity on the right side of the body, is joined by connectives passing Fig. 1. — Dorsal view'of the nervous system <>( Crepidula adunca. The pedal nerves are represented by broken lines; the right posterior pedal nerve is omitted, p., penis; t., testis. 482 PROCEEDINGS OF THE ACADEMY OF [Sept., dorsal to the oesophagus and to the right side of the stomach and the adjacent section of the intestine. The visceral connective on the left develops a small nerve, usually associated with a ganglionic enlargement, which has been traced for a. short distance beneath the floor of the mantle cavity. The visceral ganglion itself also gives rise to a branch which passes to the wall of the kidney, where it disappears from view. In this species a well-defined marginal mantle nerve, or Mantel- randnerv, is present with many of the essential features of what has been found by Willcox ('98)3 to exist in Acmcea fragilis. In the present instance it is loosely attached to the walls of the marginal mantle sinus, and throughout its course develops numerous delicate branches, which attach to the overlying epithelium or the deeper- seated gland cells. On the right side of the body this marginal nerve is united by two connectives with the pleural ganglion, and, judging from sections, with the sub-intestinal ganglion as well. Of these connectives the anterior is much the heavier, and skirting the floor of the mantle cavity can be followed forward, where it divides into a short, lateral branch uniting with the marginal nerve coming up from the posterior three-fourths of the body, and a slightly more dorsal and relatively larger nerve coursing about the base of the marginal mantle thickening. In other words, the marginal mantle nerve of the posterior part of the body can be traced as far forward as the anterior level of the head in contracted specimens. It actually may continue entirely around the body, but anteriorly it becomes very delicate and finally disappears among the masses of gland cells in the free border of the mantle. However, the heavy connective from the right pleural ganglion attaches to it before its disappearance, and on the other hand extends around the mantle edge in front, where it meets the corresponding nerve from the left pleural ganglion, thus completing the circular mantle nerve, though, as noted before, this anterior section is at a slightly greater distance from the mantle border. The smaller, posterior connective appears to be more largely a product of the sub-intestinal ganglion, and, like the two smaller connectives of the left side, it extends laterally and posteriorly through the pedal musculature to the mantle border. These two smaller connectives of the left side as well as another of much larger caliber arise from the pleural ganglion. The anterior one pursues a course similar to its counterpart on the right and is 3 Zur Anatomie von Acmsea fragilis, Jenaische Zeitschr.f. Naturw., Bd. 32, 1898. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 483 inserted in practically the same fashion with the marginal mantle nerve. The osphradial ganglion is a well-defined elongated body situated far forward on the left side of the mantle cavity. The nerve leaving its posterior border pursues a parallel course with the anterior mantle ring connective and enters the supra-intestinal ganglion. Certain species of the genus Crepidula are reported.4 to po-~e-< a sinistral zygoneury wherein the supra-intestinal ganglion is united to the pleural of the same side. I have found no evidence of its existence in C. arfunca. Turning now to the development of the nervous system, we find that shortly after the first appearance of the foot the ectodermal cells immediately in front of the lateral angles of the mouth opening commence to elongate, and each area rapidly differentiates into a well-defined, probably sensory ridge and the tentacle. Associated with these external developments there is a migration of ectodermal cells from the region of the ridge and tentacle, slight at first, but rapidly increasing, and finally ending, if one can rely on sections, at the time when pigment first makes its appearance in the eye. These migrant cells form the cerebral ganglia, more or less rounded at first, and largely obscured by the heavily staining overlying ectoderm. Synchronous with the development of the cerebral ganglia the pedal ganglia arise. With the exception of a median, ciliated, slender, wedge-like area, the base facing anteriorly, the cells of the foot likewise become elongated, whereupon cells migrate inwards, forming two large, diffuse masses in contact posteriorly where the commissure subsequently arises. The four ganglionic bodies thus existing at this time appear to be the product solely of migrating elements, since sections give no indication of cell division after the cells have left the ectodermal layer. The same is also true of all the other ganglia now to be considered. In whole mounts and in sections the cells along the posterior border of each cerebral ganglion can be seen in the late stages of its development to assume an elongated form and to develop fibres which extend posteriorly. In some instances the strands thus produced form two distinct bundles at the outset, one of which passes into the pedal ganglion, while the other at a slightly later stage joins with the pleural. In other instances one bundle first 4 Lang's Lehrbuch, p. 213. 484 PROCEEDINGS OF THE ACADEMY OF [Sept., -appears and subsequently divides to form the cerebro-pedal and cerebro-pleural connectives. During this time the cells of the anterior margin of each cerebral ganglion likewise elongate and rapidly form fibres which extend across the midline and thus form the cerebral commissure. The buccal are the only ganglia which do not directly arise from ■cells migrating from the overlying ectoderm; on the other hand, Pig. 2. — Half -developed embryo of Crepidula adunca, showing the central nervous system and the visceral loop, c, cerebral ganglion and eye; i., intestine; m., mantle cavity; o., osphradial ganglion; p., pleural ganglion; pe., pedal ganglion and otocyst; s., supra-intestinal ganglion; st., sub-intestinal ganglion; v., visceral ganglion. they give clear evidence of being products of the cerebral ganglia. At about the same time that the cerebral commissure is forming cells can be seen extending toward the midline from the inner border of each cerebral ganglion. These gradually form an accumulation on •each side of the radular invagination, and in some instances com- pletely invest the radular sac. In the stage represented by fig. 2 the ganglia are usually differentiated, though the commissure and 1916.] NATURAL SCIENCES OF PHILADELPHIA. \S~> the connectives may continue to contain cells until a relatively late stage in the development of the embryo. After the cerebral ganglia have developed, yet before they havi become fashioned into their final form, the pleural ganglia and the elements of the visceral loop put in their final appearance. Each pleural ganglion is the product of cells migrating from the adjacent ectoderm and arises at the sides of the body immediately posterior and slightly dorsal to the cerebral ganglion. In most instances it is a fairly sharply defined though sheet-like structure, yet it may originate in the form of several distinct masses whose anastomosing fibres form a distinct plexus before they become fused into a single mass. The ganglia of the visceral loop arise simultaneously. The sub- intestinal occupies a position on the right side of the body at the intersection of the neck and visceral mass; the supra-intestinal lies approximately in the midline at the junction of the neck and visceral mass; while the visceral ganglion is somewhat to the right of the midline and anterior to the terminal section of the intestine. Even while these ganglia are in process of formation delicate fibrils from some of the component, bipolar cells push out between the yolk granules and increasing in number ultimately form the connectives of the visceral loop. The osphradial ganglion rapidly becomes imbedded in the margin of the mantle, and, as in the adult, is united by a connective with the supra-intestinal ganglion. In many instances a delicate connective unites the sub- and supra-intestinal ganglia; no trace of it has been found to exist in adult specimens. The right-sided zygoneurous condition, the union of the pleural and the sub-intestinal ganglion, characteristic of the adult appears to put in an appearance shortly before the embryo escapes from the parent. At the time of hatching there are traces of a plexus extending about the margin of the mantle, but it is very dim and indistinct. When it becomes clearly defined throughout and capable of being traced it has all of the essential features of the marginal mantle nerve of the adult. With the increased growth of the mantle and the development of an extensive mantle cavity (beyond the stage represented in text fig. 2) the visceral mass between the mantle margin and the neck becomes completely covered. Furthermore, the absorption of the included yolk creates a more flattened condition of the embryo, which ultimately brings the nervous system into the position charac- teristic of the adult. 486 PROCEEDINGS OF THE ACADEMY OF [Oct., new or little-known crane-flies from the united states and canada: tipulidje, ptychopteridje, diptera. part 3. by charles p. alexander. Introduction. In this paper, the author has undertaken a review of the Nearctic species of the difficult Eriopterine genus, Gonomyia, and has supplied figures of the wings and hypopygia of the various species. The remainder of the paper is in the nature of a continuation of the first two papers under this title.1 In order to complete the data in some sections of the family, especially the genus Geranomyia, it has been deemed advisable to add a few extra-limital species, most of these being Antillean or Middle American forms whose northward range is still not well understood. Description of New or Little-known Species. Family TIPULIDiE. Subfamily LIMNOBIN.E. Tribe Limnobini. GERANOMYIA Haliday. Geranomyia Haliday; Entomologists Magazine, vol. 1, p. 154 (1833). Geranomyia canadensis Westwood. (Plate XXV, fig. 1.) Limnobiorhynchus canadensis Westwood; Annales Societe Entomologique de France, p. 683 (1835). A wide-ranging species in the central and eastern United States, from New Brunswick and the Hudsons Bay region, south to Georgia and Florida, west to Michigan, Illinois, Kentucky, Tennessee and Texas. Studies by Knab2 and others show this fly to feed on nectar of Composite flowers (Eupatorium, Solidago, Aster, Silphium, Rud- beckia, Verbesina, Cacalia, etc.) in the late afternoon and evening. A male from Brownsville, Texas, in May (C. H. T. Townsend). 1 Proceedings of The Academy of Natural Sciences of Philadelphia, October, 1914, pp. 579-606. Proceedings of The Academy of Natural Sciences of Philadelphia, September, 1915, pp. 458-514. 2 The Feeding Habits of Geranomyia: Proceedings of the Entomological Society of Washington, vol. 12, pp. 61-65 (1910). 191G.] NATURAL SCIENCES OF PHILADELPHIA. 487 Geranomyia guatemalensis sp. n. (Extra-limital.) Related to canadensis West wood; head gray with a narrow median line; thorax yellowish brown with three indistinct stripes; femora with a brownish subterminal annul us; abdominal tergites ringed brown and yellowish. Male. — Length, excluding the rostrum, 6.5 mm.; wing, (i.7 mm.; rostrum, 4 mm. Female. — Length as above, 6.8 mm.; wing, 8 mm.; rostrum, 4.1 mm. Rostrum elongate, brown, more darkened toward the apex. Antennae rather short, black, the scape dark brown; flagellar seg- ments rounded-oval. Head gray with a delicate, more or less distinct, median line. Thoracic dorsum yellowish brown, the praescutum with three broad, though rather indistinct, brown stripes, the middle stripe broad behind, not attaining the suture; scutal lobes brown, median area of the scutum and the scutellum pale yellow; post not um pale whitish gray, narrowly blackened medially. Pleura dull brownish yellow. Halteres brownish yellow, the knobs darker. Legs with the coxa? brownish yellow; trochanters yellow; femora light brown with a broad, subterminal, brown annulus, the extreme tip paler; tibiae light brownish, the tips narrowly dark brown; tarsi dark brown. Wings nearly hyaline; stigma distinct, oval, dark browm. Venation: Be long, extending to about two-fifths the length of the sector; Rs elongate, almost straight. Abdominal tergites dark brown, narrowly margined caudally and laterally with dull yellow; basal sternites dull yellowish, more brown on the intermediate segments. Male hypopygium with the penis- guard very long and prominent. Habitat. — Guatemala. Holotype, cf, Aguna, Guatemala; altitude 2,000 feet (Dr. G. Eisen). Allotype, 9 , topotypic. Type in the collection of the United States National Museum. This species differs from the Nearctic G. canadensis in the clear gray head, in the subterminal brown femoral ring, not with a black tip as in canadensis, the long penis-guard, etc. Geranomyia knabiana sp. n. (Extra-limital.) Related to canadensis Westwood; rostrum elongate, black; head dark brown; thorax brownish yellow, the praescutum with a broad median stripe; femora with an indistinct brown ring before the tip; wings with subcosta very long. 488 PROCEEDINGS OF THE ACADEMY OF [Oct., Female. — Length, excluding the rostrum, about 4.2 mm.; wing, 5 mm.; rostrum, about 2.8 mm. Rostrum elongate, dark brownish black. Antennae dark brown, moderately elongated. Head dark brown with a narrow median black line; head constricted behind. Mesonotal prsescutum brownish yellow, brighter in front, with a very broad median stripe that is pale anteriorly, dark brown behind; in the Aguna paratype the prsescutum is scarcely marked at all, in the allotype the stripe is distinct for its entire length; lateral stripes not clear; scutum brownish yellow medially, the lobes dark brown; scutellum pale dirty yellow; postnotum brown. Pleura brownish yellow. Halteres short, dark brown, the stem more yellowish. Legs with the coxae and trochanters dull yellow; femora yellowish brown with a very indistinct brownish subapical annulus; tibiae dull yellow, darkening into brown at the tip; tarsi dark brown. Wings hyaline, the stigma oval, brown; veins dark brown. Venation: Sc very long, extending to two-thirds the length of the sector; Sc2 at the tip of Sci) Rs moderately long, a little over two times the basal deflection of Ri+i. Abdominal tergites brown; sternites yellow, the basal segments a little darker. Habitat. — Central America. Holotype, 9 , Canal Zone, Panama (A. H. Jennings). Allotype, cf , Aguna, Guatemala, altitude 2,000 feet (Dr. G. Eisen). Paratypes, 9 , with the allotype; 9 , Antigua, Guatemala, Septem- ber, 1902 (Dr. G. Eisen). Type in the collection of the United States National Museum. Similar to G. canadensis, but smaller, the femora without a black tip, the praescutal pattern more distinct behind, etc. This interesting little species is dedicated to Frederick Knab, custo- dian of theDiptera in the United States National Museum, as an appre- ciation of his studies on the feeding habits of this genus of crane-flies. Geranomyia distincta Doane. (Plate XXV, fig. 2.) Geranomyia distincta Doane; Journal of the New York Entomological Society, vol. 8, p. 186 (1900). This fly will probably be found to have a wide range throughout the central and eastern United States, it being now known from Connecticut and New Jersey to Texas. Geranomyia vanduzeei sp. n. Related to distincta Doane; rostrum moderate in length; head pale gray; thorax reddish brown without stripes; wings clear without a 1916.] NATURAL SCIENCES OF PHILADELPHIA. 489 distinct stigmal spot; femora dark brown before the tip, tibiae black at the tip. Mule. — Length, excluding the rostrum, about 6.5 mm.; wing, 6.6 mm.; rostrum, about 2.5 nun. Female. — Length as above, about 5 mm.; wing, 6 mm.; rostrum, about 1.8 mm. Rostrum moderate in length, brownish yellow, darker towards the tip. Antemue with the first segment brownish yellow, the remainder of the antenna? dark brownish black; flagellar segments short-oval. Head light gray, more yellowish behind. Thorax reddish brown without distinct stripes or markings of any kind, the scutellum a little more yellow. Pleura pale reddish brown with a very sparse grayish bloom. Halteres short, pale yellow, the knobs a little darker. Legs with the coxae reddish; trochanters dull yellow; femora dull yellow with a broad brownish annulus immediately before the tip; tibiae brownish yellow, the extreme tip black; tarsi yellowish brown, the apical segments darker. Wings nearly hyaline; stigma indistinct; veins dark brown, C, Sc and Cu a little more yellowish. Venation: Sc long, extending over one-half the length of the radial sector. Abdominal tergites dull yellow with a narrow, poorly indicated, brown sublateral line; sternites yellowish, on the terminal segments more reddish. The female is quite similar to the male,, but smaller with a still shorter rostrum that is not so noticeably pallid basally; abdominal tergites brown, the last tergite more yellowish. Habitat. — Southeastern United States. Holotype, cf, Braidentown, Manatee County, Florida, March (M. C. VanDuzee). Allotype, 9 , with the type. Paratopotypes, 2 d1 9 . The type is in the collection of Mr. Van Duzee, to whom the species is respectfully dedicated. In its unmarked thorax this species runs closest to G. distincta which has a longer rostrum and lacks the dark markings on the femora and the black apices to the tibiae. Geranomyia intermedia Walker. (Plate XXV, fig. 3.) Limnobia intermedia Walker; List Diptera British Museum, vol. 1, p. 47 (1848). The following specimens are at hand: A 9 , Kingston, Jamaica, February 10, 1903 (M. Grabham), a 9 T 490 PROCEEDINGS OF THE ACADEMY OF [Oct., same locality and collector, April 9, 1903; a cf, 9, Havana, Cuba, April, 1900 (J. R. Taylor). The species may be looked for in the Miami section of Florida. The ground-color of the thorax is yellowish, the stripes usually indistinct, somewhat plumbeous, the middle stripe narrowly divided. The banded abdomen offers an easy recognition character. Geranomyia di versa Osten Sacken. (Plate XXV, fig. 4). Geranomyia diversa Osten Sacken; Proceedings of The Academy of Natural Sciences of Philadelphia, p. 207 (1859). Northeastern and central United States, ranging from Maine to Virginia, west to Arkansas. At "The Rocks" wharf on the James River, Virginia, while a member of the second trip of the "Ecphora, " under Prof. Gilbert D. Harris, of Cornell University, in quest of Tertiary fossils, I found this species in large numbers resting on the dripping, water-spattered cliffs of the Yorktown (upper Miocene) formations. On July 2, 1915, they occurred in large numbers, together with Dicranomyia badia Walker. Many were found to be heavily infested with a species of Trombidium, while others, in large numbers, were found beaten into the mud by being struck by the heavy particles of water dripping from above. In the north (Ithaca, New York) they occur in mid-summer (August) on rich vegetation along streams. The adult flies feed on various Composite flowers (Solidago, Erigeron) and also on Daucus (Umbellif erse) . A 9 specimen, Little Rock, Arkansas, July 11, 1904 (H. S. Barber). Geranomyia domingensis sp- n. (Extra-limital.) Related to cinereinota Alexander; rostrum short; head black, enclosing a silvery triangle; prsescutum brownish gray with a broad blackish median line; wings nearly hyaline, stigma indistinct; vein Sc moderate in length. Female. — Length, excluding the rostrum, about 5.2 mm.; wing, 5.5 mm.; rostrum, about 1.6 mm. Rostrum very short, black, palpi biarticulate, black. Antennse with the first segment black; segment two dark brown; flagellum brownish black with a whitish pubescence; first scapal segment elongated; second segment subglobular; flagellar segments oval. Head velvety-black, enclosing a large silvery triangle with its point directed cephalad. Mesontal prsescutum brownish gray with a broad blackish median line; lateral stripes less distinct, broad, brownish; scutum brown, 1916.] NATURAL SCIENCES OF PHILADELPHIA. 491 the lobes scarcely darker than the median area; scutellum pallid; postnotum plumbeous brown with a sparse grayish bloom. Pleura reddish yellow with a light gray bloom. Halteres yellow, the kno brown. Legs with the coxa1 and trochanters dull yellow; femora uniform light brown; tibiae and tarsi dark brown. Wings nearly hyaline; stigma indistinct; veins dark brown. Venation: Sc mod- erate in length, extending to about one-fourth the length of the. sector; R* elongate, somewhat arcuated at its origin; cross-vein r at the tip of Ri] basal deflection of Ri+i more than two times the length of the r-m cross-vein; cell 1st M% elongated, the cell being longer than vein Cui beyond it, though shorter than vein M,+2 beyond it; basal deflection of Cuj just before the fork of .1/. Abdominal tergites dark brown, the sternites rather light yellow. Habitat. — Santo Domingo. Holotype, 9 , San Francisco Mountains, Santo Domingo, Septem- ber, 1905 (Aug. Busck). Type in the collection of the United States National Museum. This species is closely related to G. cinereinota in its short rostrum, conspicuous black thoracic stripe, uniform femora, etc. ; it is a smaller fly, with the head black and silvery, without the clear gray coloration of the praescutum, the stigma indistinct and the flagellar segment s much shorter and more globular than in the corresponding sex of cinereinota. Geranomyia tibialis Loew. (Plate XXV, fig. 5.) Aporosa tibialis Loew; Linnaea Entomologica, vol. 5, p. 397 (1851). A wide-ranging species throughout the Antilles and southward over a large portion of South and Central America. The following unrecorded stations are before me, representing the Loew collections in the Museum of Comparative Zoology, the American Museum and the United States National Museum: Cuba, part of the Loew collection in the M. C. Z., bearing the label "rufescens" in Osten Sacken's writing, but certainly not that species because of the black and enlarged apices of the anterior tibia?; a o" , Baracoa, September, 1901 (Aug. Busck). Santo Domingo, several o* 9, Sanchez, June 7-12, 1915; d\ San Francisco Mountains, September, 1905 (Aug. Busck). Porto Rico, 9 , Aguadilla, January, 1899. Montserrat, a 9, Plymouth (F. Driver). Canal Zone, a 9 (A. H. Jennings). The species may be looked for in the Miami (Dade County) section of Florida. 33 492 PROCEEDINGS OF THE ACADEMY OF [Oct., Geranomyia lachrymalis Alexander. (Plate XXV, fig. 6.) Geranomyia lachrymalis Alexander; Transactions of the American Ento- mological Society, vol. 42, pp. 9, 10 (1916). The following additional distributional records: Mexico, Cordoba, April 1, 1908 (Knab). Guatemala, Escuintla, November 12, 1902 (Eisen). Costa Rica, Cache, March 3, 1910 (Calvert). Canal Zone, Tabernilla (Busck). Geranomyia certhia sp. n. (Extra-limital). Rostrum elongate; head dark gray; prsescutum yellow with three dark brown stripes ; legs with the femora and tibiae tipped with dark brown; wings hyaline with a prominent oval stigma; cord and outer end of cell 1st M2 seamed with pale brown; abdomen brown with two black longitudinal dorsal stripes. Male. — Length, excluding the rostrum, 6 mm.; wing, 7 mm.; rostrum, about 5 mm. Female. — Length as above, 6.5 mm.; wing, 8.4 mm.; rostrum, about 5 mm. Rostrum dark brownish black, long and slender, especially toward the tip. Antennas short, black. Head gray, brighter just behind the antennas; vertex dark gray with an impressed black line that is narrowed behind; occiput suffused with dull yellow. Mesonotal prsescutum pale buff-yellow with three broad, dark brown stripes, the median one double, ending just before the suture; lateral stripes shorter, crossing the suture and suffusing the scutal lobes; remainder of the scutum buff -yellow; scutellum buff -yellow, a little obscured on either side; postnotum light plumbeous brown with a very delicate impressed median line. Pleura yellow with a sparse pale gray bloom. Halteres yellow, the knobs darker brown. Legs with the coxae and trochanters dull yellow; femora brownish yellow, the tips broadly dark brown; tibiae light brown, the tips narrowly dark brownish black; tarsi brown. Wings hyaline, the stigma prominent, oval, dark brown; cord and outer end of cell 1st M2 narrowly seamed with pale brown; apex of the wing a little darkened; veins dark brown. Venation: Sc long, ending about opposite mid-length of the sector. Abdominal tergites dark brown, the segments paler, yellowish, laterally, more blackish sublaterally, forming two dorsal black lines down the abdomen; sternites brownish yellow. Habitat. — Guatemala. Holotype, cf, Antigua, Guatemala, September, 1902 (Dr. G. Eisen). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 193 Allotype, 9 , with the type. Paratopotypes, 3 cf 9 . Type in the collection of the United States Nal ional Museum. This well-marked species suggests (7. endcrlcuu Alexander {annulate Enderlein) in its large size and long rostrum, but differs in the wing- pattern, the darker apices to the femora and tibiae and the two longitudinal black hands on the abdomen, not annulated as in thai species. Geranomyia virescens I.oew. Aporosa uirescens Loew; Linnaea Entomologica, vol. ">, p. 398 (1851 . The following records for this fly admitting it to the United States fauna: Biscayne Bay, Dade County, Florida (Mrs. Slosson). Miami, Dade County, Florida (Knab), December 24, 1914, feeding on the blossoms of Persea (Lauracece). Geranomyia rostrata Say. (Plate XXV, fig. 7.) Limnobia rostrata Say; Journal Academy Natural Sciences Philadelphia, vol. 3, p. 22 (1823). This species ranges over the eastern United States and Canada, from Maine and Canada to Florida, west to Illinois and Louisiana. What has been determined as this species ranges over the Antilles and the records for the Greater Antilles, at least, are probably correct. Knab's records show this species to feed on various Com- posite flowers (Eupatorium, Solidago and Helianthus). Geranomyia ibis sp. n. Related to insignis Loew; head gray with two black lines; praescu- tum grayish with three narrow black lines; pleura gray; femora yellowish apically with a subterminal browm annulus; wings nearly hyaline wdth a sparse darker pattern. Female. — Length, excluding the rostrum, 7 mm.; wing, 7.3 mm.; rostrum, 2.3 mm. Rostrum rather short, black. Antennae black, the flagellar seg- ments short-oval. Head gray with two linear, parallel, black marks extending from the vertex to the occiput. Pronotum brownish gray, shiny black on the dorso-median line. Mesonotal praescutum pale reddish gray, with three very narrow black stripes, the median stripe only a little broader than the lateral stripes, narrowed caudally and not attaining the suture; lateral stripes long, slightly <•< mvergent and more browmish behind, crossing the suture and occupying the proximal edge of the scuta! lobes; 494 PROCEEDINGS OF THE ACADEMY OP [Oct., scutum, scutellum and postnotum reddish gray. Pleura uniform gray. Halteres short, yellow, the knobs brown. Legs with the coxse brownish yellow; trochanters yellow; femora brown, the basal and apical quarters yellowish, a rather broad, brown subterminal ring; tibiae and tarsi dark brown. Wings almost hyaline, the costal area pale yellow; stigma rounded, pale brown; a darker brown spot at the tip of Sc and at the origin of Rs; a very indistinct seam along the cord. Venation (Plate XXV, fig. 8) : Sc rather long, ending at about one-third the length of the sector. Abdominal tergites brown, the sternites more yellowish. Habitat. — South-central United States. Holotype, 9 , Hot Springs, Arkansas, June 26, 1904 (H. S. Barber). Type in the collection of the United States National Museum. Differs from G. insignis Loew (Plate XXV, fig. 9) in the more grayish ground-color of the praescutum with still narrower stripes, the clear gray pleura and the paler wing-pattern; differs from plumbeipleura Alexander in the very narrow praescutal stripes, these stripes not as wide as the interspaces, the pale scutal lobes and the pale wing-pattern; from numenius Alexander it differs in the much shorter rostrum. Geranomyia costaricensis sp. n. (Extra-limital.) Related to insignis Loew; mesonotal praescutum with two approxi- mated dorsal brown stripes; pleura yellow with a large brown mark on the mesopleurites; femora with the apex broadly yellow, with a narrow subterminal ring; wings subhy aline with four dark brown subcostal marks and paler seams to the veins. Female. — Length, excluding the rostrum, 8 mm.; wing, 7.8 mm.; rostrum, about 3.3 mm. Rostrum moderately elongated, dark brownish black. Antennae with the first segment black with a sparse grayish bloom; second segment brownish, paler toward the tip; flagellar segments black, elongate-oval. Head brownish gray. Mesonotal prsescutum clear light yellow with two broad reddish brown dorsal stripes, one on either side of the very narrow middle line, these stripes barely attaining the suture; lateral margin of the sclerite brown, widely separated from the median stripes; scutum with the median area broadly yellowish white, the lobes brown; scutellum pale; postnotum yellowish brown. Pleura dull yellow, a large brown blotch on the mesopleurites and a similar one on the lateral portions of the postnotum. Halteres yellow, the knobs brown. Legs with the coxae and trochanters light yellow; femora 1910.] NATURAL SCIENCES OF PHILADELPHIA. 495 brownish yellow, the apices broadly light yellow with a dark brown subterminal ring, this ring about one-half the extent of the pale tip; tibia' yellowish brown; tarsi brown. Wings with a pale grayish suffusion, with brown clouds and seams as follows: larger ones at the stigma, at t be t ip of Sc and origin of Rs, midlength of the subcostal cell and at the base of this cell; paler brown clouds at the tips of most of the veins, the cross-veins and deflections seamed with this same color. Venation: Sc long, extending to about one-third the length of the sector; basal deflection of Ri+i very long, the cross-vein r-m correspondingly reduced. Abdominal tergites dark brown, the segments a little brighter at their bases; sternites dull yellow. Habitat. — Costa Rica. Holotype, 9, Cartago, Costa Rica, September 17, 1909 (P. P. Calvert). Type in the collection of the American Entomological Society. This species differs from all the members of the insignis group (insignis, lineata, numenius, plumbeipleura, ibis, et al.) in the peculiar pattern of the prseseutum. Geranomyia subinsignis sp. n. (Extra-Iimital.) Related to insignis Loew; thorax grayish with three broad dark brown stripes; femora with a broad subterminal brown annulus; wings grayish with extensive brown markings. Female. — Length, excluding the rostrum, 5.7-0 mm.; wing, 0.4 mm.; rostrum, about 2.2-2.5 mm. Rostrum moderately elongated, black. Antennae black. Head black, passing into dark gray on the vertex; a narrow silvery median line extends from the front to the occiput. Pronotum dull brownish yellow with a dark brown median line. Mesonotal prseseutum light gray with three dark brown stripes, nearly subequal in width and much broader than the pale interspaces; middle stripe narrowed behind, barely attaining the suture; lateral stripevS narrowed in front, broadened behind, crossing the suture and suffusing the scutal lobes; median area of the scutum and the scutellum pale dirty brown; postnotuin brown. Pleura brownish plumbeous. Halteres yellow, the knobs brown. Legs with the coxee and trochanters pale yellow-; femora light brown, passing into light yellow at the tip, this pale area including a broad dark brown subterminal annulus; in the Panaman paratype, the brown annulus is very broad, encroaching upon the yellow tip; the pale area at the tip is about one-half the extent of the brown annulus, which in turn 496 PROCEEDINGS OF THE ACADEMY OF [Oct., is a little longer than or subequal to the yellow area proximad to it. Wings with a pale gray tinge, the costal margin with three dark brown blotches, the largest at the origin of Rs and the tip of Sc; stigma rectangular; a large blotch at the middle of Sc; pale brown seams along the cross-veins and deflections of veins; tip of the wing a little darkened; veins dark brown, R between the brown markings bright yellow. Venation: Sc rather short, extending to about one-quarter the length of the sector; Sc2 at the tip of Sci] basal deflection of Ri+b long, restricting the r-m cross-vein. Abdominal tergites dark brown, the ninth segment more yellowish; sternites yellowish brown, the apical segments more yellowish. Habitat. — Central America. Holotype, 9 , Aguna, Guatemala, altitude 2,000 feet (Dr. G. Eisen). Paratopotype, 9 ; paratype, 9 , Cucaracha, Canal Zone, November 17, 1908, No. 14 (C. H. Bath). Type in the collection of the United States National Museum. Related to insignis Loew, but smaller, the thorax grayish with the brown stripes broader, the subterminal brown annulus on the femora much broader, the wings grayish with the brown markings larger and darker; it is a much smaller species than plumbeipleura (wing and body, over 8 mm. ; rostrum, 3 mm.) with the mesonotal coloration more grayish, the wings with the pattern not so dark, but more extensive, the interspaces of the costal region not so brightened, etc. Tribe Antochini. This is one of the smaller of the crane-fly tribes, the species of the eastern United States and Canada being as follows : Antocha saxicola Osten Sacken. Canadian and Transitional zones of the east, ranging from Ontario and Quebec, south to Georgia, west to Winnipeg, Michigan and Illinois. In New York and New England it flies from May 13 to September 25. Atarba picticornis Osten Sacken. Canadian-Transitional and Transitional zones of the eastern United States, ranging from New York and Massachusetts, south to Virginia and North Carolina, west to Indiana and Tennessee. In New York and New England it flies from June 19 to July 13, having an unusually short flight-period. In the south it flies later (October 7, Tennessee) and appears earlier (May 29, Maryland). Dicranoptycha germana Osten Sacken. (Plate XXV, fig. 10.) Canadian life-zone of the northeastern United States, ranging from New York, Vermont and New Hampshire, south, in the moun- 1916.] NATURAL SCIENCES OF PHILADELPHIA. 497 tains, to North Carolina. In New York and New England it flies from June 21 to August 8, being quite common in late June and throughout July on vegetation in cool wooded places, usually along streams. Dicranoptyoha nigripes Osten Sacken. Known only from the type-locality, Dalton, Georgia. Dicranoptycha sobrina Osten Sacken. (Plate XXV, fig. 11.) Transitional and Austral life-zones, wide-ranging throughout the northern portions of the United States, from Ontario and New York, south to North Carolina, west to British Columbia, California and New Mexico. In the vicinity of Washington it flies from April 20 to August 31, while in the northeastern part of its range (New York and Ontario) it appears even later, August 30 to September 20. Dicranoptycha winnemana sp. n. (Plate XXV, fig. 12.) Transitional life-zone, ranging from Maryland to Georgia. Elephantomyia westwoodi Osten Sacken. Canadian and Canadian-Transitional life-zones of northeastern United States and eastern Canada, ranging from Ontario, Quebec, and Nova Scotia, south to North Carolina, west to Wisconsin. In New York and New England it flies from June 5 to August 13, being ■common throughout late June and July. Rhamphidia albitarsis Osten Sacken. Tropical life-zone, ranging from Santo Domingo, through the Antilles to St. Vincent and British Guiana; also in Central America. It may possibly occur in the Miami section of Florida. Rhamphidia flavipes Macquart. (Plate XXV, fig. 13.) Wide-ranging throughout the eastern parts of North America, from Ontario, and Quebec south to Georgia and Florida, west to Manitoba, Wisconsin, Missouri and Texas. In New York and New England, it flies from May 29 to August 29; in the southern parts of its range much earlier (Florida, March 14; Texas, March 18). Rhamphidia mainensis sp. n. (Plate XXV, fig. 14.) Canadian-Transitional life-zone of the northeastern United States, ranging from Maine to Maryland, west to Illinois. Teucholabis carolinensis Alexander. Lower Austral life-zone, known only from the type-locality, Georgetown, South Carolina, August 19, 1915. 498 PROCEEDINGS OF THE ACADEMY OF [Oct., Teucholabis complexa Osten Sacken. (Plate XXV, fig. 15.) Transitional and Austral life-zones of the eastern United States, ranging from New York and Connecticut, south to Georgia, west to Illinois and Kentucky. In the vicinity of Washington it flies from May 7 to July 25. Teucholabis lucida Alexander. (Plate XXV, fig. 16). Known only from the type-locality, District of Columbia, August 22, 1915. Toxorrhina magna Osten Sacken. Austral life-zones of the southeastern United States, ranging from New Jersey south to Florida; in New Jersey flying from July 19 to August 12, in the south its flight-period being much more extensive (Crescent City, Florida, April 21; Thalman, Georgia, April 28;. Bainbriclge, Georgia, September, October). Toxorrhina muliebris Osten Sacken. Canadian-Transitional life-zones of the northeastern United States, ranging from New York and Maine, south to Maryland, west to Michigan. In New York and New England it flies from June 21 to August 8, being common in places in late June and throughout July. RHAMPHIDIA Meigen. Rhamphidia Meigen; Systematische Beschreibung, vol. 6, p. 281 (1830). Rhamphidia mainensis sp. n. Rostrum elongated; head light gray with a large brown blotch between the eyes; prsescutum light yellowish brown with three dark brown stripes; wings unmarked except the pale stigma; legs dark brown; abdomen dark brown, the basal sternites and the hypopygium yellowish. Male. — Length, 6-7.5 mm.; wing, 5.8-7.7 mm. Rostrum elongated, black. Antennae black, the second segment a little paler apically. Head light gray with a large brown blotch between the eyes. Mesonotal prsescutum light yellowish brown with three dark brown stripes, the middle one broadest, double, becoming indistinct before the suture; lateral stripes shorter, crossing the suture and suffusing the scutal lobes except behind; median area of the scutum and the scutellum pale yellowish gray; postnotum yellowish, darker, more brownish, on the sides. Pleura brownish with a golden-yellow pollen. Halteres light brown, the knobs dark brown. Legs with the coxse and trochanters yellowish brown; femora dark brown, a little paler basally; tibiae and tarsi dark brown. Wings sub- 1916.] NATURAL SCIENCES OF PHILADELPHIA. 499 hyaline, the stigma indistinct, brownish; veins dark brown, sub- costa more yellowish. Venation (Plate XXV, fig. 14) Rs moderate in length, about one and one-half the length of the deflection of Ri+b; cell 1st Mt small to elongate; basal deflection of Cut variable in position, before, at or beyond the fork of M. Abdominal tergites dark brown, the hypopygium brighl reddish yellow; sternites two to five dull brownish yellow basally, the caudal margins dark brown; segments six to seven dark brown; eight and nine dull yellow. The Maryland paratype is strikingly smaller (the smallest measure- ments given) than the typical Maine material and has the stigma more distinct, but is undoubtedly the same species. Habitat. — Northeastern United States. Holotype, c\ Orono, Penobscot County, Maine, June 12, 1913 (Alexander) . Paratopotypes, 4 cf's; paratype, cf, Hyattsville, Maryland, September 1, 1912 (Malloch); . 511 (1913 , 504 PROCEEDINGS OF THE ACADEMY OF [Oct.r knobs brown. Legs with the coxae and trochanters dull yellow; femora brown, a little paler basally; tibiae and tarsi brown. Wings subhyaline, stigma indistinct, veins pale brownish yellow. Venation (Plate III, fig. 36) : Sc long, ending beyond the fork of the sector; Sct about four to six times as long as Sc2; Rs long, gently arcuated; cross- vein r present, connecting with R2+3 at about one-third its length; R2 oblique (as in Gonomyia subcinerea) ; cell 1st M2 closed; basal de- flection of Cui at about one-third to one-fourth the length of the cell. Abdomen brownish yellow, the sternites paler yellow. Male hypopygium (Plate XXXI, fig. 98) with the pleurites moderately slender, broader basally, bearing three appendages, the largest appendage (a) very elongate, digitiform, with numerous long scattered hairs on raised tubercles, the apex a little flattened, blunt, this appendage decussate with its fellow of the opposite side; the two smaller appendages are slender, one (b) directed proximad, decussate, pale, the tip drawn out into a long point; the third appendage (c) slender, directed cephalad, slightly enlarged beyond the middle, the tip subacute. Penis-guard rectangular, on the ventral side running out into a sharp, median chitinized point. In a position of rest the large finger-like appendages lie parallel and are more or less approxi- mated, but not decussate, directed strongly ventrad. Females have the eyes smaller, the praescutum more yellowish; ovipositor powerful, the valves elongate, upcurved toward the tips. Habitat. — Northeastern United States. Holotype, cf , Mountain Lake, Fulton County, New York, altitude 1,600 feet, June 13, 1916 (Alexander). Allotype, 9 , Buell Mountain, Fulton County, New York, altitude 1,800 feet, June 18, 1916. Paratopotypes, 2 c? 's, 35 9 's. Type in the collection of the author. The holotype occurred on rich vegetation along a small temporary stream flowing into the lake on June 13. Associated with the species at this time were the following crane-flies: Dicranomyia pubipennis, Ormosia rubella, Erioptera (Empeda) stigmatica, Limno- phila toxoneura, L. areolata, L. nigripleura, L. brevifurca, L. rufibasis, L. sylvia, Ulomorpha pilosella, Rhaphidolabis (Rhaphidolabis) tenuipes, R. (Rhapidolabina) flaveola, R. (Plectromyia) modesta, Tricyphona vernalis, T. calcar, Dolichopeza americana, Oropeza venosa,, Tipula senega, T. iroquois, and T. hermannia. The allotype and several of the paratypes occurred along a small temporary torrent pouring down the eastern slopes of Buell Mountain 1916.1 NATURAL SCIENCES OF PHILADELPHIA. 505 on June 18. Associated with this species were the following crane- flies: Dicranomyia pubipennis, Limnobia indigena, Ldmnophila niveitarsis, L. toxoneura, L. areolata, L. adusta, L. brevifurca, L. rufibasis, L. munda, L. montana, L. lenta, L. emmelina, Ula elegans, Rhaphidolabis (Rhaphidolabina) flaveola, Dolichopezu americana, Tipiiln senega, T. hermannia, T. maerolaMs and T. valida. This interesting pallid species gave some trouble in assigning it to this genus The general appearance of the fly is altogether t li.it of Gonomyia, hut the presence of the radial cross-vein, the very elongate subcosta and the position of the tuberculate pits make it more probable that the present reference is the correct one. In its venation it departs widely from that of the genotype, E. stigmatica ( '-ten Sacken (Eastern Nearctic), in the oblique, Gonomyia-like course of vein R2, in this respect suggesting certain of the European Empedse. These insects with the oblique R2 certainly appear different from stigmatica, and if this difference were worthy of a name it is this group that would have to be separated off from stigmatica, the genus Empeda being erected for the species with the short cell R2 and the normal, Erioptera-\ike course of vein R2. This Gonomyia- Erioptera group of species gets more complex with the accession of new forms, and it seems probable that the best basis for a division is the position of the tuberculate pits, these being far cephalad in the Gonomyia-like forms and retreated far backward and lying at nearly mid-length of the sclerite in the genera and subgenera related to Erioptera. MOLOPHILUS Curtis. Molophilus Curtis; British Entomology, p. 444 (1833). Molophilus fultonensis sp. n. Much larger and darker colored than M. pubipennis to which it is most closely related; antennae of the female much longer than in the corresponding sex of pubipennis. Male. — Length, 3.5-4.4 mm.; wing, 5.6-6.4 mm. Female. — Length, 4.5-5 mm. ; wing, 5.3-6 mm. Very similar to the smaller M. pubipennis Osten Sacken, differing as follows: much larger and darker colored, especially in the male sex, the abdomen being dark brown instead of yellow; thorax without the rich reddish tints of pubipennis; pronotum not bright yellow as in pubipennis. Hypopygium with two chitinized hooks (Plate XXXI, figs. 95, 96), the curved hook directed abruptly ventrad, ending in a long slender point; the smaller straight one is more dorsad in position, minutely denticulated along the ventral face; proximo-lateral angle 506 PROCEEDINGS OF THE ACADEMY OF [Oct., produced into a sharp point. Hypopygium quite as in pubipennis, but the ventral hook is more blackened, chitinized, and the point is longer, more slender; dorsal hook more slender, not so blackened, the sharp point on the proximo-lateral angle not so long. The female has the antennae much longer than in this sex of pubi- pennis, the flagellar segments dark brown, not yellowish, the terminal segments darkened; flagellar segments elongate-oval instead of merely oval; wings (Plate XXVII, fig. 37) with the anterior margin and apex with a fringe of reddish brown to dark brown hairs, not bright yellow as in pubipennis. Habitat. — Northeastern United States. Holotype, & , Mountain Lake, Fulton County, New York, altitude 1,600 feet, July 7, 1916 (Alexander). Allotype, 9 , with the type. Paratopotypes, 15 cf 9 's; paratypes, 1 d", Taylor, Cortland County, New York, altitude 1,200 feet, July 20, 1916, 2 cf's, near Cincinnatus, Chenango County, New York, altitude 1,300 feet, July 21, 1916. Type in the collection of the author. A large striking species, the largest yet discovered in the eastern States. The types occurred on rich vegetation along a small temporary stream flowing into the lake. This is the same locality described under Erioptera nyctops, but by this date (July 7) the stream had disappeared and the mid-summer crane-fly fauna was quite different from that found less than four weeks before. The principal species recorded now were the following: Dicranomyia immodesta, D. pubipennis, D. macateei, Elephantomyia westwoodi, Erioptera chryso- coma, E. chlorophylla, E. armillaris, E. armata, E. caloptera, E. stigmatica, Molophilus pubipennis, M. ursinus, Lininopkila fusco- varia, L. quadrata, Bittacomorpha jonesi, etc. Molophilus nova-oaesariensis sp. n. Size small (wing under 3.2 mm.); coloration dark brownish black; wings dusky with the fusion between Cux and M 3 slight ; hypopygium of the male with the ventral appendages straight, slender, heavily chitinized. Male. — Length about 2.7 mm.; wing, 2.8 mm. Rostrum and palpi blackish. Antennae rather elongated, dark brown, the flagellar segments cylindrical with an abundant long pale pubescence. Head dark gray. Mesonotum black with a sparse grayish bloom ; pleura dark brown- 1916.] NATURAL SCIENCES OF PHILADELPHIA. 507 ish black, the dorso-pleural membranes a little brighter. Halteres short, dull yellow throughout, the knobs elongate. Legs with the coxae brown, the trochanters yellowish brown; femora and tibiae dark brown, the former a little brighter at the base; tarsi light brown,, the tips of the segments and all of the terminal two segments darker.. Wings with a dusky suffusion, the costal and stigmal regions a little more suffused; veins dark brown. Venation (Plate XXVII, fig. 38): first deflection of R2 elongate, oblique, not perpendicular as in ursinus (Plate XXVII, fig. 39) ; fusion of M 3 and Cux slight, shorter than the free portion of Gu\ alone. Abdomen dark brownish black with a long pale pubescence. Hypopygium narrowed, the ventral appendage very long, slender, acicular and almost straight, heavily chitinized. Habitat.- — Eastern United States. Holotype, d71, Ashland, Camden County, New Jersey, May 13, 1905. Type in the collection of the United States National Museum. This species occurred in the United States National Museum collection, bearing the label UM. ursinus f" in Coquillett's writing. M. ursinus Osten Sacken, probably the smallest crane-fly in the United States (wing of the male, 2.4 mm.), is the only species with which it might be confused; the venation of the two species is quite distinct, that of the new species being much more of the normal Molophilus type. M. ursinus (Plate XXVII, fig. 39) has the upward deflection of R2 almost perpendicular and in a line with the radial cross-vein; basal deflection of Cui before the fork of M, the fusion of Cui and M3 being correspondingly extensive, longer than the free portion of Cui alone; there is a clear, hyaline area running along the- anterior face of vein M, this obliterating the base of M1+2; M. nova- ccesariensis (Plate XXVII, fig. 38) has the upward deflection of R2. elongate, oblique; basal deflection of Cui about at the fork of M, the fusion of Cui and M3 being very slight, not more than one-half the free portion of Cui alone; there is no hyaline obliterative mark along, vein M and the base of M ,+2 is distinct. EMPEDOMORPHA gen. n. Head with the front broad, the eyes widely separated. Rostrum short. Palpi four-segmented, the segments subequal. Antennae- 16-segmented, the second segment not longer and only a little broader than the third; flagellar segments oval with verticils just below mid-length; terminal segments smaller. Legs moderately stout, the? 34 508 PROCEEDINGS OF THE ACADEMY OF [Oct., segments with abundant strong hairs; tibiae without spurs. Wing (of the male) (Plate XXVII, fig. 40) with the stigma enormously enlarged so that the costal and radial veins in that field are bulged outward; stigma extending from the basal portion of cell Ri to the end of vein Rt; wing (of the female) with the stigma smaller, the cells Ri not so wide and the cross-vein r consequently shorter and more nearly straight. Sc moderately long, ending just before the fork of Rs; Sc2 far retreated, lying just beyond the origin of Rs; Rs long, straight, in a line with #4+5; cross-vein r long, oblique, somewhat twisted, inserted at the end of Rs or just beyond on R2+3; R2+3 about as long as R2 alone; R2 arcuated at its base; cell 1st M2 closed (sometimes open by the atrophy of cross-vein m, which, when present, is usually weak) ; basal deflection of Cui at or just before the fork of M; fusion of Cux and M3 moderate, about one-half of Cui alone or a little longer than the deflection of Cui. Genotype. — ? Trimicra empedoides Alexander. (Mid-western Ne- ar ctic region.) Empedomorpha empedoides Alexander. 1 Trimicra em-pedoides Alexander; Canadian Entomologist, vol. 48, pp. 44, 45 (1916). This curious fly ranges from South Dakota to Texas and New Mexico, an unrecorded station being Brownsville, Texas, May 3, 1904 (H. S. Barber), a 9 in the collection of the United States National Museum. GONOMYIA Meigen. Gonomyia Meigen; Systematische Beschreibung, vol. 1, p. 146 (1818). The numerous species of this genus may be divided into three subgenera, Gonomyia, Gonomyella and Leiponeura, and it is the last- named group that has caused so much confusion in the study of crane-flies during the past few years, the species having been de- scribed in a wide range of Limnobine and Antochine genera (Dicra- nomyia, Atarba, Elliptera, Teucholabis, Thaumastoptera, etc.). Brunetti, in his exhaustive work on the "Diptera Nematocera of British India," pp. 469, 470, enters into a long discussion as to the homologies of the veins of those species of Gonomyia which have but two branches of the sector reaching the wing-margin, i.e., the subgenus Leiponeura Skuse. He presents the rather far-fetched idea of the cell R2 being unusually large, sessile and the vein _R4+5 lacking so that cross-vein r-m connects M1+2 with R3. A study of a series of the species of the genus show the impossibility of this inter- pretation, Ri+S being one of the most constant veins of the wing in 1916.] NATURAL SCIENCES OF PHILADELPHIA. 509 the Tipulidse. It is much more reasonable to figure out the dis- appearance of one of these branches by fusion to the wing-margin, a condition found in many remote crane-fly tribes (Limnophilini, the Neotropical genus Psaronius Enderlein; Hexatomini, the genus Hexatoma and the reduced form, Cladolipes, Palsearctic, etc.). In the genus Gonomyia we may start with forms possessing a deep cell R2 and the radial cross-vein present as in the subgenus Gonomyella Alexander (slossona? Alexander) through species with the cell a little less deep [subcinerea group (Nearetic), Plate XXVI, fig. 33; affinis Brunetti (Oriental) et al.]; then to still smaller forked species (novebo- racensis, Plate XXVI, fig. 30; aperta Brunetti) and finally to a group of species that have the cell very tiny (sulphurella group, Plate XXVI, fig. 26; flavonotata Edwards of the Seychelles Islands et al.), a single step further in the fusion of Ri+z resulting in the obliteration of the cell and the attainment of the condition found in Leiponeura (Plate X XVI, figs. 17-22). With this fusing of the branches of #2+3 there occurs a simultaneous tendency for Ri+5 to bend caudad toward the wing-apex so that in the species of Leiponeura these two branches of the radial sector are very widely separated at the wing-margin. It is a very easy matter to pick out the species of this group merely by this one tendency alone, a correlated character, however, being the extremely narrowed, often almost pointed, inner end of cell 1st M2 due to the extreme shortening of the basal deflection of ilfi+2. Dr. Bergroth has expressed his belief that although Gonomyia manca Osten Sacken is a true, though aberrant, member of the genus, the other species that have been described in various Antochine genera, such as Atarba, Elliptera, Leiponeura, etc., are quite distinct from manca and really belong to the tribe Antochini. The series of Leiponeura, as they occur in the United States alone and without taking into consideration the rest of the world, show a curious and almost complete transition into the sulphurella group of Gonomyia s.s. I would point out the exceedingly long verticils of the flagellar segments of the male antennse that are found not only in the species of Leiponeura {manca, pleuralis et al.), but also in Gonomyia sul- phurella, another proof of the close relationship existing, since this condition of the antennse elsewhere in the family is rare or lacking. Occasionally a crane-fly society is found in which the dominant element consists of species of this genus. Such a society was found in the Shaul woods on the east bank of Nowadaga Creek (Castle Creek) south of the village of Indian Castle, Herkimer County, New York, June 13, 1915, and may be described as a CronowM/ia-association. 510 PROCEEDINGS OF THE ACADEMY OF [Oct., The woods are quite open, in places with outcroppings of a transi- tional character, of Trenton limestones and Utica shales and with a western exposure. The forest cover consists of the dominant arbor-vitse, Thuja occidentalis, with an admixture of Juglans cinerea, Betula lutea, Ulmus americana, U. fulva, Tilia americana, Fraxinus americana and a few others. The underbrush was of yew, Taxus canadensis, Ribes Cynosbati and Hamamelis virginiana. The under- growth from which the crane-flies were swept consisted of three dominant plants, early meadow-rue, Thalictrum dioicum, mandrake, Podophyllum peltatum, and ground ivy, Nepeta hederacea, with fewer representatives of other species, Ranunculus abortivus, R. acris, Fragaria vesca, and an abundance of bladder-fern, Cystopteris bulb- ifera. In places rank growths of Osmunda cinnamomea, Podophyllum, Solidago, Lysimachia Nummularia, bound into dense tangles by lianas, Menispermum canadense and Psedera quinque-folia. Here occurred Gonomyia mathesoni, Rhabdomastix (Sacandaga) flava and Erioptera venusta. Along the base of the hill is a broad ditch, now quite dry, but supporting such a flora as Cystopteris, Lysimachia Nummularia, Tussilago Farfara, etc. It is very probable that a certain element of the crane-fly fauna emerged from this ditch. The similarity between the crane-fly fauna of this open woods and that of Sport Island in the Sacandaga River, Fulton County, New York, is very close (Gonomyia alexanderi, G. cognatella, G. mathesoni, Rhabdomastix flava, etc.). The crane-fly fauna of this association is as follows: Dicranomyia liberta, sev.; Geranomyia canadensis, rare; Antocha saxicola, few; Erioptera venusta, comm.; E. armata, comm.; Molo- philus pubipennis, comm.; Gonomyia alexanderi, uncoram. ; G. sulphurella, dom.; G. mathesoni, dom.; G. cognatella and G. florens, loc. abund.; G. subcinerea, uncomm.; Rhabdomastix (Sacandaga) flava, uncomm.; Adelphomyia minuta, uncomm.; Limnophila rufibasis, comm.; Tipula caloptera, rare, and T. macrolabis, rare. Sport Island in the Sacandaga River, New York (mentioned above), is rather remarkable in its Gonomyia fauna, no less than eight species having been taken here (G. alexanderi, G. sacandaga, G. manca, G. sulphurella, G. cognatella, G. mathesoni, G. noveboracensis and G. subcinerea) , as well as the closely related genus, Rhabdomastix (Sacandaga) flava Alexander. The floral conditions obtaining here have been discussed by the author in an earlier paper.5 5 Entomological News, vol. 23, p. 72 (1912). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 511 A Key to the Near ctic Species of Gonomyia. 1. Two branches of the radial sector attain the wing-margin (Subgenus Leiponeura Skuse.) 2 Three branches of the radial sector attain the wing-margin 7 2. Outer deflection of M3 absent, the cell 1st M2 being open 3 Outer deflection of M3 present, the cell 1st M2 being closed 4 3. Costa conspicuously china-white; legs banded with white; male hypopygiuni with the dorsal pleural appendage triangular, the caudal angle a prominent elongate spine; ventral pleural appendage a flattened blade whose inner caudal margin is armed with about five or six acute chitinized appressed teeth, of which the innermost is the largest. (Eastern United States.) alexanderi Johnson. Costa not conspicuously china-white; legs without white bands; male hypopygium with the dorsal pleural appendage broadly triangular, the caudal angle a short spine; ventral pleural appendage a flattened blade bearing near its dorsal inner side a sharp chitinized point; no serrations along the lobe. (Western United States.) cinerea Doane. 4. Pleural stripes conspicuous; stigma distinct 5 Pleural stripes indistinct or feebly indicated; stigma lacking or very faint 6 5. Legs with the femora tipped with dark browrn; costal margin of the wings conspicuously light yellow, the stigma pale browm. (Northeastern United States.) sacandaga Alexander. Legs with the femora indistinctly darkened at the tip; costal margin of the wings not yellow, the stigma dark browTi. (Southeastern United States and southward.) pleuralis Williston. 6. Pleura plumbeous with a pale yellow stripe; male hypopygium with the pleural appendage armed with a strongly curved hook. (Southeastern United States and southward.) pner Alexander. Pleura unstriped, pale; male hypopygium with the pleural appendage very elongate, slender, decussate in a position of rest, the inner face at the apex with a strong bristle. (Eastern Lmited States.) manca Osten Sacken. 7. Radial cross-vein present (subgenus Gonomyella Alexander) i Southeastern United States and southward.) slossonce Alexander. Radial cross-vein lacking (subgenus Gonomyia Meigen) 8 8. Basal deflection of Cux far before the fork of M ; subcosta long, ending beyond the origin of Rs 9 Basal deflection of Cui at or beyond the fork of M; subcosta short, ending opposite or far before the origin of Rs 11 9. Wings clear. (Northeastern United States.) mathesoni Alexander. Wings spotted 10 512 PROCEEDINGS OF THE ACADEMY OF [Oct., 10. Pleura unstriped; Sc rather short, extending to about one-fourth the length of the sector; no dark blotch at the tip of Sci; apices of cells Rs and R5 largely darkened. (Eastern United States.) blanda Osten Sacken. Pleura striped with brown; Sc long, ending at about half the length of the sector; a dark blotch at the tip of Sd; apices of cells Rz and R0 only slightly darkened. (Western United States.) - calif ornica Alexander. 11. Antennae orange at the base, the flagellum dark 12 Antennae black throughout 15 12. Cell 1st M2 closed; femora with a dark brown subterminal annulus. (Eastern United States.) sulphurella Osten Sacken. Cell 1st Mo open; femora without a darker subterminal annulus... 13 13. Sc short ending before the origin of Rs, this distance being about equal to the vein R2. (Western United States.) flavibasis Alexander. Sc longer, ending opposite, or just before, the origin of Rs 14 14. Male hypopygium with the dorsal angle of the pleurite stout, with numerous (about fifteen) slender hairs; ventral append- age simple, stout, tipped by a blunt black spine; second appendage a powerful, curved, subchitinized arm directed proximad. (Northeastern United States.) fiorens Alexander. Male hypopygium with the dorsal angle of the pleurite slender, with a few (about ten) stout hairs; ventral appendage bifid, the arm with a long slender black spine; second appendage a slender pale arm that is almost straight, with two hairs at the tip. (Eastern United States.) cognatella Osten Sacken. 15. Wings with slender veins, clouded with a milky suffusion; Rs very long and straight. (Northwestern North America.), galactoptera Bergroth. Wings with stouter veins, pale gray to hyaline; Rs shorter, more arcuated basally 16 16. Subcosta short, ending before the origin of Rs, the distance about equal to the r-m cross-vein; vein R-2 oblique, a little longer than the cross-vein r-m; male hypopygium with the gona- pophyses and penis-guard fused into a large, prominent, cylindrical tube. (Northeastern United States.) noveboracensis Alexander. Subcosta longer, ending about opposite the origin of Rs ; vein R2 longer, the cell R2 being larger; male hypopygium with the gonapophyses and penis-guard not fused into a cvlindrical tube 17 17. Wings long and slender with a strong grayish brown suffusion; halteres elongated; male hypopygium with the ventral pleural appendage very elongate, slender, slightly expanded toward the tip. (Eastern Rocky Mountain region.) filicauda Alexander. Wings broader, not strongly tinged with grayish ; halteres shorter male hypopygium with the ventral pleural appendage not strikingly elongated 18 1916.] NATURAL SCIENCES OF PHILADELPHIA. 513 18. Male hypopygium with the dorsal pleural appendage armed with a chitinized hook 19 Male hypopygium with the dorsal pleural appendage without a hook, although with two powerful bristles at the tip 20 19. Male hypopygium with the dorsal appendage two lobed, the caudal arm a powerful chitinized spine; ventral arm with a sharp, chitinized, feebly curved spine. (Eastern United States.) subcinerea Osten Sacken. Male hypopygium with the dorsal appendage irregular, not two lobed, the outer face near the apex with a strong, curved, chitinized hook. (Extra-limital; Guatemala.) cequalis Alexander. 20. Male hypopygium with the ventral appendage prominent, directed caudad, narrowed at the base, the apex a slight chitinized tooth directed proximad. (Western United States.) virgata Doane. Male hypopygium not as described 21 21. Male hypopygium with the ventral appendage a double, dark- colored lobe, the inner arm stout-cylindrical; the outer arm slender, curved, bearing at the tip two divergent hairs; penis- guard subtended by two divergent chitinized arms that are acute at their tips. (Extra-limital; Guatemala.) unicolor Alexander. Male hypopygium with the ventral appendage pale, not chitinized; penis-guard long and pale, the apex bifid by a deep U-shaped notch; the divergent subtending arms are slender, the ventral margin with a few sharp, appressed teeth. (Extra-limital; Mexico.) mexicana Alexander. Subgenus LEIPONEURA Skuse. The Cinerea Group. Gonomyia (Leiponeura) alexanderi Johnson. EUiptera alexanderi Johnson: Psyche, vol. 19, p. 3, fig. 6 (1912). This handsome little fly is locally common. Its known distribu- tion over the eastern United States is as follows: New York, Fulton County, Sport Island, Sacandaga River, June 11, 1914, to August 24, 1910 (Alexander), the type-locality; Herkimer County, Indian Castle, June 13, 1915 (Alexander). North Carolina, Buncombe County, Black Mountains, June 13, 1912 (Beutenmuller). A female specimen from Piano, Collin County, Texas, in August (E. S. Tucker), probably belongs here, but may possibly represent G. helophila Alexander. This is also the species mentioned by Osten Sacken in the Monographs, part 4, p. 179, without locality. The wing is shown on Plate XXVI, fig. 17. 514 PROCEEDINGS OF THE ACADEMY OF [Oct., The male hypopygium is described below, the characters being largely taken from paratypic material in my collection. Hypopygium (Plate XXIX, figs. 59, 61) with the pleurites rather prominent, cylindrical; ventral pleural appendage (v) elongate, the outer angle produced caudad as a rather broad flattened blade that is slightly chitinized at the tip; inner caudal margin of the appendage with about five or six acute chitinized appressed teeth, of which the inner- most is the largest; a fleshy lobe on the ventral side of the outer blade; middle pleural appendage lacking (possibly of a caducous nature) ; dorsal pleural appendage (d) lying on the inner caudal angle of the pleurite, triangular in outline, the caudal angle produced caudad as an elongate spine that is heavily chitinized apically, the inner angle a rounded lobe with numerous setigerous tubercles. The two Nearctic species, alexanderi and cinerea, have been dis- tinguished by the key given before. There is a third species, G. helophila Alexander,6 that is even closer to alexanderi. Its known range is extra-limital (Lesser Antilles and British Guiana to Peru), but it may range into our southern limits. The two species may be separated as follows: 1 . Dorsal pleural appendage triangular, the caudal angle a prominent spine that is heavily chitinized apically; middle pleural appendage apparently lacking; ventral pleural appendage with a broad flattened blade, the inner caudal margin with about five or six acute chitinized appressed teeth, of which the innermost is the largest (Plate XXIX, fig. 59). (Nearctic.) alexanderi Johnson. Dorsal pleural appendage a fleshy lobe bearing many hairs ; middle pleural appendage a slender subsinuous spine; ventral pleural appendage with the apex flattened, smooth, chitinized, bilobed; ventral margin of the appendage with two prominent teeth whose margins are minutely denticulate. (Plate XXIX, fig. 60). (Neotropical.) helophila Alexander. Gonomyia (Leiponeura) cinerea Doane Dicranomyia cinerea Doane; Journal of the New York Entomological Society, vol. 8, pp. 182, 183, PI. 7, fig. 2 (1910). The known range of this species is as follows: Washington, Whitman County, Pullman, August 10, 1898 (Piper); the type-locality. California, Humboldt County, Blue Lake, June 20-27, 1907 (Bradley) . The wing is shown on Plate XXVI, fig. 18. 6 Entomological News, vol. 27, pp. 343-346, figs. 1, 3 (1916). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 515 The male has never been described, and this specimen is made the allotype. Allotype, cf. — Rostrum and palpi dark brown. Antennae with the basal segments enlarged, the second segment as large as or larger than the first; flagellar segments small, brown. Head pale with a broad dark brown mark on the vertex sending a small median tongue backward onto the occiput. Pronotal scutum dark medially. Mesonotal preescutum light brown with three dark brown stripes, the median one split by a narrow vitta of the ground-color; scutum with the lobes dark brown. Pleura pale yellow, striped with brown; a very short brown dorsal stripe extending from the pronotum back to above the fore coxae; second stripe beginning at the fore coxa extending caudad to the base of the halter; ventral stripe broadest, including the sterna and the bases of the middle and hind coxae; the pale stripe enclosed broad, extending to the abdomen. Halteres pale. Legs with the coxae pale; trochanter's darker; remainder of the legs broken. Wings hyaline or nearly so, the veins brown; basal deflection of Ri+b, r-m and the basal deflection of Cih dark brown; a pale brownish gray oval stigma. Venation (Plate XXVI, fig. 18) with Rs short, straight, oblique, a little longer than the r-m cross-vein; basal deflection of Cui at the fork of M. Male hypopygium (Plate XXIX, fig. 62) with the pleurites rather prominent, cylindrical; ventral pleural appendage (y) elongate, flattened, blade-like, the apex chitinized; a rounded lobe on the inner ventral side just before the apex; at the base on the inner dorsal side, a sharp, acute, chitinized point; middle appendage a slender, slightly curved pale hook, directed inward, the apex slightly chitinized; dorsal pleural appendage (d) a subtriangular lobe, the caudal angle produced caudad as a short spine, heavily chitinized at the apex, the inner angle prominent, produced slightly cephalad, with numerous setigerous punctures. Allotype in the collection of Cornell University. The type is grayish, this color being produced by a pruinosity that is not shown by the alcoholic allotype. The Pleuralis Group. Gonomyia (Leiponeura) sacandaga Alexander. Gonomyia sacandaga Alexander; Proceedings of The Academy of Natural Sciences of Philadelphia, pp. 587, 588, PL 27, fig. 25 (wing) ; PL 26, fig. 21 (hypopygium) (1914). This species is still known only from the type station where it is common. 516 PROCEEDINGS OF THE ACADEMY OF [Oct., New York, Fulton County, Sport Island in the Sacandaga River, June 11, 1914, to August 24, 1910; the type-locality. The wing is shown on Plate XXVI, fig. 19. The hypopygium having been described and figured in the first part of this series is not repeated here. Gonomyia (Leiponeura) pleuralis Williston. Atarba -pleuralis Williston; Transactions of the Entomological Society of London, p. 289, PL 10, fig. 61 (1896). This is a tropical species that reaches our southern limit, its range being as follows: Bermuda, apparently common (Jones). Georgia, Charlton County, Okefinokee Swamp, June 20, 1912 (Bradley). Cuba, Baracoa, September, 1901 (Busck). Porto Rico, Aguadilla, January, 1899 (Busck). St. Vincent (H. H. Smith); the type-locality. British Guiana, Bartica, December 9, 1912, to February 26, 1913; Mallali, March 14, 1913 (Parish). The wing is shown on Plate XXVI, fig. 20. The male hypopygium has been described and figured by the author in another paper.7 The Manca Group. Gonomyia (Leiponeura) puer Alexander. Gonomyia puer Alexander; Proceedings of the United States National Museum, vol. 44, p. 506, PL 66, fig. 14 (1913). This is likewise a tropical species that ranges within our limits,, its northern distribution being a little more extensive than the last. South Carolina, Georgetown County, South Island, August 19, 1915 (Alexander); Charleston County, McClellanville, August 8, 1915 (Alexander). Georgia, Charlton County, Okefinokee Swamp, June 20 to 25, 1912 (Bradley) . Florida, Dade County, Miami, December 19, 1912 (Knab). Santo Domingo, San Francisco Mountains, August, September, 1905 (Busck); the type-locality. British Guiana, Bartica, January 3, 1913, to January 10, 1913 (Parish). The wing is shown on Plate XXVI, fig. 21. ''Entomological News, vol. 23, pp. 418-420; figs. 3, 4 (1912). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 517 The male hypopygium (Plato XXIX, fig. 63) with the pleurites very elongated, broader at the base, tapering to the obliquely trun- cated apex which bears on the inner side a single appendage shaped as a curved hook, bent proximad, dorsad and finally cephalad, the apex acute and strongly chitinized. Anal tube broad, pale, bifid by a deep median notch, the adjacent lobes rounded. Penis-guard (p.gd.) very elongate, slender, tapering gradually to the acute apex, at the base on the ventral side with an oval fleshy lobe covered with setigerous punctures on the ventral face. Gonomyia (Xeiponeura) manca Osten Saeken. Gonomyia manca Osten Saeken; Monographs of the Diptera of North America, part 4, pp. 178, 17H ( lst>9). A rather wide-ranging species throughout the eastern United States: New York, Fulton County, Sacandaga Park, August 26, 1916 (Alexander) . New Jersey, Essex County, South Orange, June 30, 1868 (Osten Saeken); the type-locality. Maryland, Montgomery County, Forest Glen, June 1, 1913 (Knab); Plummers Island, August 18, 1912 (Viereck). District of Columbia, Washington (Coquillett's types of Dicranomyia curvivena). Virginia, Fairfax County, Great Falls, August 23, 1908 (Knab); Difficult Run, July 25, 1915 (McAtee and Alexander); Glencarlyn, May 28 (Banks). North Carolina, Jones County, Pollocksville, July 8, 1915 (Alexander) ; Onslow County, Camp Perry, July 9, 1915 (Alexander) ; Buncombe County, Black Mountains, June 24, 1912 (Beutenmuller). South Carolina, Charleston County, McClellanville, August 8, 1915 (Alexander). Georgia, Decatur County, Bainbridge, September, October, 1910 (Bradley). The wing is shown on Plate XXVI, fig. 22. The male hypopygium is of the type of G. puer Alexander. G. incrmis Alexander et at. It is shown on Plate XXIX, figs. 64, 65; the pleu- rites are exceedingly elongated, slender, tapering to the narrow apex, the outer face with many long hairs, on the inner face at the apex wit h a st tong bristle; pleurites in a position of rest, decussate. Penis- guard (p.gd.) long and slender, acute, tapering to an acute point, subtended on either side by a flattened blade, ending in a triangular black hook that is bent slight ly dorsad at the apex. 518 PROCEEDINGS OF THE ACADEMY OF [Oct., Subgenus GONOMYELLA Alexander. Gonomyia (Gonomyella) slossonae Alexander. ? Gonomyia slossonce Alexander; Proceedings of The Academy of Natural Sciences of Philadelphia, pp. 588, 589, PI. 27, fig. 26 (1914). A tropical species that ranges into the southeastern United States: South Carolina, Georgetown County, South Island, August 19, 1915 (Alexander). Florida, Seminole County, Sanford, May 7, 1908 (M. C. Van- Duzee); Dade County, Biscayne Bay (A. T. Slosson); the type- locality. Panama, Paraiso, January 29, 1911 (Busck). Subgenus GONOMYIA Meigen. The Blanda Group. Gonomyia (Gonomyia) mathesoni Alexander. Gonomyia mithesoni Alexander; Entomological News, vol. 28, pp. 170-172, figs. 1-3 (1915). A species of the northeastern United States and eastern Canada: Nova Scotia, Truro, July 7 to 26, 1913 (Matheson). New York, Fulton County, Sacandaga Park, June 12 to 16, 1914 (Alexander), the type-locality; Herkimer County, Indian Castle, June 13, 1915 (Alexander); Cortland County, Taylor, July 20, 1916 (Alexander) ; Tompkins County, Ithaca, August 24, 1912 (Alexander). The wing is shown on Plate XXVI, fig. 23. The hypopygium of the male has been described and figured in the paper cited above. Gonomyia (Gonomyia) blanda Osten Sacken. Gonomyia blanda Osten Sacken; Proceedings of The Academy of Natural Sciences of Philadelphia, p. 231 (1859). This handsome fly ranges over the eastern United States: New Hampshire, Rockingham County, Hampton, July 15, 1907 (S. A. Shaw). Vermont, Chittenden County, Burlington, June 23, 1906 (Johnson). Connecticut, New Haven County, East River, July 16 to 20, 1910 (Ely). New York, Albany County, Albany, June 26, 1912 (D. B. Young); Herkimer County, Trenton Falls, (Osten Sacken), the type-locality; Cortland County, Taylor, July 20, 1916 (Alexander); Tompkins ■County, Ithaca, July 19, 1912 (Alexander). District of Columbia, Washington (Osten Sacken) ; the type-locality. Virginia, Fairfax County, Falls Church, June 7, 1914 (Shannon). South Carolina (in the Berlin Museum). 1916.] NATURAL SCIENCES OF PHILADELPHIA. 519 Georgia, Rabun County, Clayton, altitude 2,000 feet, May 18, 1911 (Bradley i. Michigan, Walnut Lake, June 26 to 28, 1907 (Needham). Colorado, Clear Creek County, June 27, 1915 (Oslar). The wing is shown on Plate XXVI, fig. 24. The malt' hypopygium (Plate XXIX, figs. 68, 69) with the pleurites stout, the outer angle produced caudad into a long, fleshy, finger-like lobe, blunt at the apex, provided with numerous tubercles; ventral pleural appendage (v) large, prominent, being chitinized and bifid the caudal or outer arm longer, slender, the diameter uniform, the apex subacute; cephalic or inner arm shorter, expanded distally into a broad, truncated apex; dorsal pleural appendage (d) a subtriangular fleshy lobe whose inner angle is produced into a prominent chitinized curved horn; the cephalic inner margin with about six hair-bearing tubercles. Ninth tergite with the caudal margin transversely concave, not notched medially. Penis-guard very slender. Gonomyia (Gonomyia) californica Alexander. Gonomyia californica Alexander; Canadian Entomologist, vol. 48, pp. 324. 325 (1916). This is the western representative of the blanda group: British Columbia, Peachland, May 19, 1912. California, Humboldt County, Blue Lake, June 20 to 27, 1907 (Bradley); the type-locality. The wing is shown on Plate XXVI, fig. 25. The male hypopygium (Plate XXIX, figs. 66, 67) with the pleurites stout, outer angle produced caudad into a slender, fleshy lobe, pointed at the apex and sparsely provided with setigerous tubercles; ventral pleural appendage (v) a two-armed chitinized rod whose outer ventral arm is stout basally, narrowed toward the apex which is again expanded into a blunt tip; the inner arm bends dorsad, slender, tapering into an acute blackened apex; dorsal pleural appendage (d) a triangular fleshy lobe provided with long, coarse hairs. Ninth tergite with a deep, narrow, median notch the lateral angles rounded. Penis-guard (p.gd.) prominent, the sides subparallel, the apical half on the dorsal surface with numerous hairs, the apex produced ventro- caudad into a prominent median lobule. The Sulphurella Group. Gonomyia I Gonomyia I sulphurella Osten Sacken. Gonomyia sulphurella Osten Sacken; Proceedings of The Academy of Natural Sciences of Philadelphia, p. 230 (1859). A wide-ranging species throughout eastern North America: 520 PROCEEDINGS OF THE ACADEMY OF [Oct., Ontario, Fort Erie, May 30, 1911 (M. C. Van Duzee); Point au Barile, Georgian Bay, July 11, 1914 (R. B. Hughes). Nova Scotia, Truro, July 7 to August 16, 1913 (Matheson). Maine, Oxford County, Fryeburg, September 5, 1913 (Alexander). Vermont, Windsor County, Norwich, July 8, 1908 (Johnson). Connecticut, Middlesex County, Middletown, June 17, 1909 (John- son); New Haven County, East River, July 11, 1910 (Ely). Rhode Island, Washington County, Kingston, September 23, 1907 (Johnson). New York, Fulton County, Sacandaga Park, June 11, 1914, to August 24, 1910 (Alexander); Herkimer County, Trenton Falls (Osten Sacken), the type-locality; Indian Castle, June 13, 1915 (Alexander); Tompkins County, Ithaca, May 13 to August 24, 1912 (Alexander); Westchester County, Tarrytown, June 9, 1914 (Frost); Nassau County, Sea Cliff, August (Banks). Pennsylvania, Luzerne County, Hazleton, August 30, 1910 (Dietz). New Jersey, Cumberland County, Shiloh, June 19, 1915 (Alex- ander) . Maryland, Prince George County, Hyattsville, August 2, 1908 (Knab). District of Columbia, Washington (Osten Sacken), the type-locality; May 15, 1909 (Knab). Virginia, Alexandria County, Rosslyn, May 11, 1913 (Knab) • Fairfax County, Dead Run, May 21, 1914 (Shannon); Difficult Run, July 25, 1915 (McAtee and Alexander); Glencarlyn, June 28 (Banks). North Carolina, Onslow County, Camp Perry, July 9, 1915 (Alexander). Georgia, Rabun County, Clayton, May 20, 1911 (Bradley). Louisiana, DeSoto County, Logansport, March 24, 1908 (Tucker). Texas, Collin County, Piano, May, 1907 (Tucker). The wing is shown on Plate XXVI, fig. 26. The male hypopygium (Plate XXIX, fig. 70) with the pleurites elongate, the outer angle produced proximad, dorsad and caudad as a very elongate, slender, irregularly curved and feebly chitinized hook which tapers gradually to an acute point; dorsal pleural appen- dage (d) a cylindrical fleshy lobe, narrowed toward the apex which terminates in a bristle; ventral pleural appendage (v) bifid, the dorsal arm short, densely provided with short hairs on the inner face; ventral arm very long, slightly curved, blade-like, the tip subacute, the arm directed proximad, decussate with its mate of the opposite side. Penis-guard stout, fleshy, near the apex on the ventral sur- 1916.] NATURAL SCIENCES OF PHILADELPHIA. 521 face, a chitinized, median appendage directed caudad and slightly ventrad, at the acute apex turned strongly dorsad. The Cognatella Group. Gonomyia < Gonomyia) flavibasis Alexander. Gonomyia flavibasis Alexander; Canadian Entomologist, vol. 48, pp. 317-319 (1916). A western species that is still known only from the type-locality, Monterey County, California, July 18, 1896. The wing is shown on Plate XXVI, fig. 27. The male hypopygium (Plate XXX, figs. 76-78) with the pleurites long and slender, the dorsal angle produced caudad as a flattened, fleshy lobe that bears many hairs on the dorsal face; first pleural appendage very long, flattened, the apex bent, the appendage with many long, prominent hairs; second appendage complex, consisting of a chitinized hook that is slightly bent; underneath the base of this hook is a fleshy lobe with several short bristles on the outer face, including two powerful bristles at the apex; above the base of the hook is a slender, subchitinized rod that is darkened at the tip. Gonomyia iGonomyia) florens Alexander. Gonomyia florens Alexander; Canadian Entomologist, vol. 48, pp. 316, 317 (1916). A fly of cold Canadian conditions in the northeastern United States: Maine, Penobscot County, Orono, July 12, 1913 (Alexander). New York, Fulton County, Sacandaga Park, June 18, 1916 (Alexan- der); Gloversville, June 22, 1916 (Alexander); Herkimer County, Indian Castle, June 9 to 13, 1915 (Alexander), the type-locality; Tompkins County, McLean, June 5, 1916 (Alexander). The wing is shown on Plate XXVI, fig. 28. The male hypopygium (Plate XXIX, fig. 71) with the pleurites very short and stout, the inner dorsal angle produced caudad into a blunt fleshy lobe whose inner margin is fringed with numerous long hairs; a short blunt, fleshy knob (A;) at the base of this lobe, provided with five long hairs on the margin; first pleural appendage (i) slender, originating just below the knob (k), directed proximad, the base enlarged with two or three stout hairs, the tip slightly bifid, the caudal arm with two bristles, the cephalic arm with one bristle; a stout bristle just before the tip on the inner or cephalic side; second pleural appendage (2) a powerful, chitinized hook, slightly curved, directed proximad, bent strongly cephalad toward the apex; third 522 PROCEEDINGS OF THE ACADEMY OF [Oct., appendage (3) a slender, fleshy rod, beyond the slightly enlarged base bent strongly dorsad so that it lies above the second appendage, directed caudad at the tip which is capped by a short, blunt, chitinized spine. Ninth tergite short, broad, the caudal margin transverse. Ninth sternite with a prominent median knob on the caudal margin,, provided with numerous setigerous tubercles. Gonomyia (Gonomyia") cognatella Osten Sacken. Gonomyia cognatella Osten Sacken; Proceedings of The Academy of Natural Sciences of Philadelphia, p. 230 (1859). A more southern species than the last, their ranges overlapping in New York State : Connecticut, New Haven County, East River, July 6, 1910 (Ely). New York, Fulton County, Sport Island, Sacandaga River, June 18, 1911, to August 26, 1916 (Alexander); Herkimer County, Indian Castle, June 10 to 13, 1915 (Alexander). Maryland, Montgomery County, Cabin John Bridge, May 16, 1909 (Knab); Plummers Island, May 24, 1914 (McAtee). District of Columbia, Washington (Osten Sacken) ; the type-locality. Virginia, Fairfax County, Difficult Run, July 25, 1915 (McAtee and Alexander). North Carolina, Buncombe County, Black Mountains, July 16, 1912 (Beutenmuller). The wing is shown on Plate XXVI, fig. 29. The male hypopygium (Plate XXIX, figs. 73-75) with the pleurites very short and stout, the inner dorsal angle produced caudad as a slender, finger-like lobe, fimbriate with eight or nine long stout hairs on the dorsal inner edge; at the base of the lobe a small, slender, cylindrical knob (k) with three long hairs at the apex; ventrad of this finger-like angle of the pleurite is an elongate, very slender, pale appendage (2) directed caudad and slightly ventrad and proximad, at the apex with two long slender hairs ; pleural appendage (3) directed ventrad on its basal portion, soon bent directly upon itself, dorsad, the tip caudad; the appendage is pale, chitinized, slender, bifid, the lateral arm with the apex somewhat twisted, the proximal arm a slender, pale stylet directed strongly proximad, at the apex with an elongate, slender, black, chitinized spine. Proximad of the base of the knob (fc) is a slender appendage with a prominent hair at the apex and two slightly smaller subterminal hairs. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 523 The Galactoptera Group. Gonomyia (Gonomyia) galactoptera Bergroth. Gonoim/iu fig. 7.' (1900), described as a Phyllolabis. 526 PROCEEDINGS OF THE ACADEMY OF [Oct., type-location (Pullman, Whitman County, Washington, June 22, 1898) is outside of the range of that species as now known. Gonomyia (Gonomyia) aequalis Alexander. Gonomyia cequalis Alexander; Canadian Entomologist, vol. 48, pp. 323, 324 (1916). An extra-limital species (Guatemala, Central America) whose hypopygium has never been figured. Male hypopygium (Plate XXX, fig. 86) with the pleurites mod- erately stout, the dorsal angle produced caudad as a very slender, finger-like lobe that is provided with numerous setigerous tubercles; at the base of this lobe on the inner side is a tiny fleshy protuberance directed proximad; ventral pleural appendage (v) a pale fleshy lobe densely covered with short, pale hairs; dorsal pleural appendage (d) irregular, fleshy, directed proximad, the caudal or outer face near the apex with a strong, curved, chitinized hook that is directed dorsad and cephalad, the cephalic or inner face with a row of strong bristles, at the tip longer and more approximated. Ninth tergite almost straight across or slightly concave. Penis-guard rather long, compressed, the median appendage pale, slightly curved. Anal tube (a.t.) broad, prominent, subtended on either side by a concave wing bearing on the caudal outer angle a fimbriate tuft of yellow bristles. Gonomyia (Gonomyia) virgata Doane. Gonomyia virgata Doane; Journal of the New York Entomological Society, vol. 8, p. 189, PI. 7, fig. 21 (1900). A western species with the following rather restricted range: Washington, Pacific County, Tokeland (Doane), the type-locality. California, Humboldt County, Eureka, June 6, 1903 (H. S. Barber). The wing is shown on Plate XXVI, fig. 32. The male hypopygium (Plate XXX, fig. 87) with the ninth pleurites rather elongate, the dorsal inner angle produced caudad as a slender, cylindrical, fleshy lobe that bears numerous long pale hairs; ventral pleural appendage (v) prominent, directed caudad, narrowed at the base, the apex a slight chitinized tooth directed proximad; second pleural appendage (2) a flattened or concave lobe, heavily chitinized at the apex which is broad, split into two acute teeth, of which the proximal one is the larger; dorsal pleural appendage (d) small, fleshy, bent slightly cephalad at the tip which bears two elongate bristles; cephalic or inner face of the appendage bearing numerous setigerous tubercles. Ninth tergite large, the caudal margin feebly convex, bearing a short, pointed tooth just inside the base of the pleurite. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 527 Ninth sternite almost straight across, or slightly narrowed to the truncated apex. Gonomyia (Gonomyia) unicolor Alexander. Gonorhyia unicolor Alexander; Proceedings of the United States National Museum, vol. 44, p. 507, PI. 66, fig. 15 (1913 An extra-limital species (Guatemala, Central America) included here to complete the data. The male hypopygium (Plate XXX, fig. 89) with the pleurites moderately stout and elongated, the dorsal angle not produced; ventral pleural appendage (v) a double lobe, dark colored, sub- chitinized, the inner arm stout-cylindrical with the tip acute and the inner side with two or three hairs; the outer and more ventral arm slender, curved and bearing near the tip two stout divergent hairs; dorsal pleural appendage (d) a subcylindrical fleshy lobe from an enlarged base, at the apex with two powerful bristles; cephalic or inner face with four small hairs that are evenly spaced. Ninth tergite almost straight across or slightly concave. Penis-guard (Plate XXX, fig. 88) seen from beneath, a powerful, quadrangular chitinized base whose caudal angle is a ventrally directed hook, the base subtended on either side by short gonapophyses (g) that end in a sharp, conical spine ; from above and dorsad of the quadrangular base arise two cylindrical, pointed, chitinized arms that are diver- gent. - Gonomyia (Gonomyia) mexicana Alexander. Gonomyia mexicana Alexander; Canadian Entomologist, vol. 48, pp. 321, 322 (1916). An extra-limital species described from Cordoba, State of Vera Cruz, Mexico, May 8, 1908 (Knab). The male hypopygium (Plate XXX, fig. 91) with the pleurites elongate, though rather stout; ventral pleural appendage (v) a long, pale lobe, subcylindrical, blunt at the apex and bearing sparse, elongate hairs; second pleural appendage strongly chitinized, the tip acute, curved; dorsal pleural appendage (d) rather short, cylindrical, fleshy, the cephalic or inner angle of the apex with two powerful bristles; caudal or outer angle of the apex with two smaller hairs. Ninth tergite rather short, the caudal margin straight or nearly so. Penis-guard (Plate XXX, fig. 90) very long and pale, the apex bifid by a deep U-shaped notch, each lobe provided with long hairs; on the ventral face arises a slender, rod-like, median appendage, sparsely short-hairy at the apex and down the ventral face; the divergent subtending arms are slender, somewhat flattened, the apex produced 528 PROCEEDINGS OF THE ACADEMY OF [Oct., into a slender cylindrical point, the outer or ventral margin with a few sharp, appressed teeth. RHABDOMASTIX Skuse. Rhabdomastix Skuse; Proceedings of the Linnsean Society of New South Wales, series 2, vol. 4, pp. 828, 829 (1889). Subgenus SACANDAGA Alexander. Rhabdomastix (Sacandaga) monticola sp. n. Coloration grayish black; wings whitish hyaline with an indistinct pale brown stigma; cross-vein r present but faint; cell R2 small; cell 1st M2 elongate with the basal deflection of Ciii inserted at about mid-length. Male. — Length about 5.5 mm.; wing, 6 mm. Rostrum and palpi dark brownish black. Antennae black, the flagellar segments with a long, pale pubescence; flagellar segments narrowed, especially terminally. Head black with a sparse grayish bloom. Mesonotum black with a sparse grayish yellow pollen; tuberculate pits on the extreme cephalic margin of the sclerite. Pleura clearer gray. Halteres pale, the knobs enlarged, the stem a little darkened basally. Legs with the coxae black with a sparse gray bloom; tro- chanters brown; femora dark brown; tibiae yellowish brown, a little darkened at the base and more narrowly at the tips; tarsal seg- ment one and all except the tip of two yellowish brown; remainder of the tarsi dark brown. Wings subhyaline, the stigma fairly distinct, oval, pale brown; veins dark brown, Sc paler. Venation (Plate XXVII, fig. 41) with Rs elongate; cell R2 small, vein ^2 being short, oblique; R3 arcuated; cross-vein r present but very indistinct, bisecting the stigma; cell 1st M2 rectangular, somewhat elongated, the veins issuing from it not elongated, divergent; basal deflection of Qui almost mid-length of cell 1st M2. Abdomen dark brownish black. Habitat. — Western America. Holotype, d% Kokanee Mountain, British Columbia, altitude 8,000 feet, August 11, 1903 (R. P. Currie). Paratopotypes, 3 cf's. Type in the collection of the United States National Museum. This species was formerly determined as being R. (S.) caudata Lundbeck9 in the first part of this series, but additional material 9 Diptera groenlandica, Vidensk. Meddel. fra den naturh. Foren., p. 267, PL 6, fig. 18 (1898); as a Goniomyia, subgenus Empeda. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 529 shows that the species is distinct. It serves to connect the gen- eralized caudata with the specialized members of the subgenus {flava, parva). The small cell R2 and the elongate cell 1st .1/, with tin- short, divergent veins issuing from it, and the basal deflection of Cui inserted at nearly midlength of it serve to separate the form from caudata. This latter species is described and figured in a publication that is not readily accessible to the student, and its venation is shown on Plate XXVII, fig. 42. With caudata this new species agrees in the possession of the radial cross-vein, but this is here very faint and evidently in process of being eliminated. In R. flava (Plate XXVII, fig. 43) the cross-vein is lacking. In regard to the genus Rhabdomastix Skuse it will be noted that Kertesz gives the date of Skuse's paper on the Limnobinse as 1890; the first separates of this article are dated September 25, 1889, and it is this date that has been adopted. PTEROCHIONEA gen. n. Palpi short, four-segmented, the segments • subequal. Antennse 11-segmented, the first segment of the scape longer than the second; second segment narrow-subglobular, not strikingly wider than the adjacent segments; first segment of the flagellum elongate, tapering- slight ly to the tip, formed by the fusion of five segments as determined by the verticils, near the tip with a faint suture that passes about half-way across the segment on the verticillate side; segments four to ten moderately elongated, cylindrical, truncated at both ends (Plate XXXI, fig. 93) with a strong series of verticils; terminal segment formed by the fusion of two segments as determined by the verticils. Wings moderately broad (Plate XXVII, fig. 44); Sc moderately elon- gated ending just beyond the end of Rs, Sc2 at its tip; Rs long, strongly arcuated at its origin; cross-vein r present; cell 1st Mz elongate, the deflection of M3 over twice the length of the median cross-vein; cell Mi present; basal deflection of Cui at the fork of M; second anal vein short, ending before the origin of the sector. Legs hairy, not incras- sated; tibiae without spurs. Male hypopygium powerful (Plate X XXI. fig. 94), suggesting the Chionea type, the pleural pieces stout, cylindrical, with a strong pleural appendage, somewhat curved, nearly as long as the pleurites; ventral lobe small, rounded, hairy. Genotype. — Pterochionea bradleyi sp. n. (Western Nearctic region.) This new genus is closest to Crypteria Bergroth10 of the northern Pahearctic region in the curious fusion of the five basal segments of 10 .Ada Soc. pro Faun. r. Finn., vol. 37, Xo. 6, pp. 3-7, figs. 1-4 (1913). 530 PROCEEDINGS OF THE ACADEMY OF [Oct., the antennae; however, this fusion-segment is merely elongated and does not show the elongate-conical shape of the segment in Crypteria and the even more accentuated condition of Chionea. Specimens of Chionea valga Harris before me show eight flagellar segments beyond the fusion-segment, the basal ones short, becoming more and more attenuated toward the tip of the organ. Therefore, in the reduction of the antemial segments by the fusion of the basal flagellar segments, Chionea also shows a very close relationship to Crypteria and Ptero- chionea. I certainly think that Bergroth is right in surmising a relationship between his Crypteria and the abnormal, wingless Chionea, and Pterochionea may now be added to the list of possible CTmmea-precursors. This interpretation would remove Chionea from the neighborhood of Trimicra and Symplecta and place it at the end of the Eriopterine series along with Cladura and the present genus. The two winged genera of this group may be separated as follows: 1. Antennae with the second segment enlarged, globular; the two apical segments of the flagellum entirely distinct; cross-vein r absent ; second anal vein very elongate, extending beyond midlength of the radial sector; hypopygium with the pleural pieces slender with two small, subequal appendages. (North- western Palsearctic.) Crypteria Bergroth. Antennae with the second segment not enlarged; the two apical segments of the flagellum fused; cross-vein r present; second anal vein short, not reaching to the base of the sector; hypopy- gium with the pleural pieces stout-cylindrical with a strong, powerful dorsal appendage that is almost as long as the pleurite. (Northwestern Nearctic.) Pterochionea gen. n. Pterochionea bradleyi sp. n. Antennae brown, of eleven segments; wings with cell Mi present; male hypopygium strong and powerful. Male. — Length, 5 mm.; wing, 5.6 mm. Fore leg, femur, 3.6 mm.; tibia, 3.8 mm.; hind leg, femur, 4.1 mm.; tibia, 4 mm. The species is described from alcoholic material. Rostrum short, light brown; palpi brown. Antennae dark brown; Head yellowish brown. Thoracic dorsum dull yellow with indistinct darker stripes on the praescutum. Pleura yellowish. Halteres pale. Legs with the coxae and trochanters pale yellow; femora light brownish yellow, a little darkened apically, the fore femora darker, being only a little paler at the base; tibiae and tarsi brown. Wings nearly hyaline, the stigma indistinct; veins dark brown, subcosta pale. Venation (Plate 1916.] NATURAL SCIENCES OF PHILADELPHIA. 531 XXVII, fig. 44): basal deflection of TtVe very short or obliterated, the cross-vein r-m being correspondingly longer, arcuated; cell Mi short, about one-half as long as its petiole. Abdomen short, the tergites dark brown, the hypopygium even darker. Male hypopygium (Plate XXXI, fig. 94) powerfully enlarged, the pleurites not conspicuously elongated ending in a rounded ventral lobe that is covered with numerous hairs; the single pleural appendage a powerful curved arm that is rather blunt at the tip, with numerous long hairs on the inner face and at the apex where they are exceedingly numerous and spinous, at the extreme apex very tiny. Habitat. — -British Columbia. Holotype, d\ Rogers Pass, British Columbia, August 9, 1915 (Bradley). Allotype, 9 , in copula with the type. Type, mounted in balsam, in the collection of Cornell University. This interesting crane-fly is dedicated to the collector, Dr. J. Chester Bradley, of Cornell University, to whom I am indebted for assistance and advice upon many subjects. Tribe Limnophilini. LIMNOPHILA Macquart. Limnopkila Macquart; Suit a Buffon, vol. 1, Histoire Naturelle Dipteres, p. 94 (1834 i. Limnophila irrorata Johnson. Limnophila irrorata Johnson; Proceedings of the Boston Society of Natural History, vol. 34, No. 5, pp. 127, 128, PI. 16, fig. 17 (1909). This interesting species was described from the unique female found floating dead in a water receptacle at Riverton, New Jersey, and had apparently not been found since that time. The fly was rediscovered in 1915 while the author was searching for Venus fly-traps, Dioncea muscipula Ell., near Jacksonville, North Carolina. The male sex is here described and the specimen made the allotype : Male. — -Length 7.6-7.8 mm.; wing, 7-7.3 mm. Agrees closely with the female, but the head a little more brownish; petiole of cell R2 of the wings very short, not as long as the r-m cross-vein; basal deflection of Cnx inserted beyond mid-length of cell 1st Mt. Allotype, common; Ilex vomitoria, several; Callicarpa americana, abundant, and two shrubby Composites, Iva frutescens and Borrichia frutescensr common. The undergrowth from which the Tipulids were swept consisted of great beds of Polygonum punctatum, with a more sparse admixture of spike grass, Distichlis spicata; Hydrocotyle umbellata; and the Verbenaceous plants, Lippia nodiflora and Verbena caroliniana.u The Tipulidse of the above floral association showed a strong Floridian tendency, the associates of Polymera being as follows: Dicranomyia distans, abundant; D. floridana, rare; Teucholabis carolinensis, rare; Gonomyia (Leiponeura) puer, rare; G. (Gonomyella) slossonce, several; Erioptera {Mesocyphona) parva, abundant, and Brachypremna dispellens, common. Tribe Pedicini. TRICYPHONA Zetterstedt. 1838. Tricyphona Zetterstedt; Insecta Lapponica, Dittera, p. Sol. This genus, like the tribe Pedicini in general, has a northern distribution throughout the world. There are seven species now known in the eastern United States which may be summarized as follows : Tricyphona inconstans Osten Sacken. (Plate XXVIII. fig. 47.) Canadian and Transitional-Canadian zones of the eastern United States and Canada. One of our commonest and best-known crane- flies, ranging from Ontario, Quebec and Newfoundland south (in the mountains) to Georgia and west to Michigan. It is also recorded from Europe, but a very careful comparison with abundant material and a critical study of the male hypopygium must be made before these records can.be finally accepted. The fly is abundant in swamps and low swales. In New York and New England it is on the wing from May 12 to September 28, while in the vicinity of Washington it appears even earlier (Great Falls, Virginia, April 20, 1913 (Knab)). Tricyphona calcar Osten Sacken. (Plate XXVIII, fig. 48.) Canadian life-zone of northeastern America, ranging from the Hudsons Bay region, Ontario and Quebec south (in the mountains) 14 I am indebted to Mr. W. L. McAtee, of the United States Biological Survey,, for his kindness in determining many of the above-listed plants. 1910.| NATURAL SCIENCES OF PHILADELPHIA. 537 to North Carolina. It is a species of low swampy areas, though usually more wooded than that frequented by inconstans. In New- York and New England it flies from May 22 to October 1, being abundant in late May and early June, reappearing the latter half of July and being common throughout August and early September. The late summer specimens probably represent a new species, the females having the wings very reduced in size. Tricyphona auripennis Osten Sacken. (Plate XXVIII, fig. 49.) Canadian life-zone of the northeastern United States, known only from New Hampshire, Massachusetts (the type-locality) and New York. It flies in June. The only specimens ever seen alive by the author occurred at Indian Castle, Herkimer County, New York, June 10 to 13, 1915; they were found sitting motionless on the perpendicular face of a small cliff, lurking in small crevices of the rock. The cliff is low, of Utica shale, completely saturated by percolating water and well-shaded by large hemlocks, arbor vitae,. yellow birch, mountain maple, Cornus circinata, etc., and with a sparse vegetation of Impatiens biflora, Geranium Robertianum, Collinsonia canadensis, Cystopteris bulbifera and Equisetum arvense. Tricyphona hyperborea Osten Sacken. (Plate XXVIII, fig. 50.) A fly of the Hudsonian and possibly the Canadian life-zones of northeastern America and still very rare in collections. It was described from Labrador, and a few specimens have been taken on Mt. Washington, New Hampshire; these specimens are in the col- lections of the Boston Society of Natural History and the United States National Museum. Tricyphona katahdin Alexander. (Plate XXVIII, fig. 51.) Canadian life-zone of the northeastern United States, a late summer species flying during the latter half of August. Tricyphona vernalis Osten Sacker. (Plate XXVIII, fig. 52.) Canadian and Canadian-Transitional zones of the northeastern United States. One of our early-flying species, though appearing later, as a rule, than paludicola. It ranges from Maine and New Hampshire south (in the mountains) to Georgia, and is found along small streams, temporary and permanent, where the water runs rapidly. The flies may be swept from vegetation or are found in small swarms of eight to ten individuals near the water. In New York and New England it is on the wing in late May, abundant in June and persisting into July. Further south it flies in April or even the last of March, reappearing in late September. 538 PROCEEDINGS OF THE ACADEMY OF [Oct., Trioyphona paludicola sp. n. (Plate XXVIII, fig. 53.) Canadian-Transitional life-zone of the northeastern United States, as yet known only from New York. It flies in early spring (May 7-20), and is found in swampy, stagnant localities. Tricyphona paludicola sp. n. Antenna? dark brown throughout; head and thorax grayish brown, the mesonotal prsescutum with three dark brown stripes, the middle one split by a broad line of the ground-color; abdomen brown, the tergites uniform in color; wings almost unicolorous, the dark markings reduced to punctiform dots and narrow seams. Male. — Length, 7.6-8 mm.; wing, 8.6-8.7 mm. Female. — Length, 10.5-10.9 mm.; wing, 10.5-10.8 mm. Rostrum and palpi dark brown. Antennae black, the flagellar segments shortened and gradually narrowed. Head grayish brown. Mesonotal prsescutum pale grayish brown with three dark brown stripes, the middle stripe very, broad and more or less bisected by a narrow, median vitta of the ground-color, lateral stripes short, narrow; scutum gray, the lobes with a rounded dark brown spot; scutellum and postnotum light gray. Pleura light gray, the dorso- pleural membranes pale brown. Halteres light brown, the knobs dark brown. Legs with the coxae reddish, gray pruinose ; trochanters brownish yellow; femora dark brown, the fore pair with the basal quarter a little brightened, middle pair with the basal third, hind pair with about the basal half brightened; tibia} and tarsi dark brown. Wings grayish subhyaline, the costal cells more suffused, brownish yellow; tiny dark brown dots at Sc2, origin of Rs, tip of Sch cross-vein r, above the fork of Rs, cross-vein r-m and a narrow seam along the basal deflection of Cur, paler gray clouds underneath the tip of R2+z and near the tip of 2nd A; veins dark brown, Sc more yellowish. Venation (Plate XXVIII, fig. 53): distance between Sc2 and the origin of the sector about equal to the sector alone; Rs angulated and often spurred at origin; r at the tip of Ri) distance between the fork of Rs and cross-vein r-m about equal to that cross-vein; petiole of cell #3 a little longer than r-m; cell 1st M2 closed, long and narrow; cell Mi present, usually longer than its petiole; cross-vein m-cu present or barely obliterated by the fusion of the adjacent veins. Abdominal tergites dark grayish brown; sternites similar with the basal segments indistinctly ringed with paler; hypopygium con- colorous with the rest of the abdomen; valves of the ovipositor brownish yellow. Habitat. — Northeastern United States. 1916.] \\ll RAL SCIENCES OF PHILADELPHIA. 539 Holotype, d", McLean, Tompkins County, New York, May 13, 1916 (Alexander). Allotype, ? , with the type. Paratopotypes, 24 tf's, 1 9 ; 1 d1, 1 9 , on May 20, 1916 (P. A. Claassen). The type is in the collection of the author; Mr. Claassen has deposited his paratypes in the collection of the University of Kansas. As is very frequent in this genus of flies, abnormalities of the wing-venation often occur; one male specimen has cell 1st M2 open by the atrophy of the median cross-vein in both wings; four other males in the series show adventitious cross-veins or spurs in various cells of the wings. When Osten Sacken described Tricyphona vernalis,15 he had only a male and a female specimen from Washington, D. C, taken in April, these showing the pale antenna! bases, cingulated abdomen and heavily patterned wings that are characteristic of vernalis. The specimens from the White Mountains, New Hampshire, were added in the Monographs, p. 271. I am greatly indebted to Mr. C. W. Johnson for his kindness in examining the types of vernalis and making notes upon them. Abundant material that I have determined as vernalis agree in all details with Osten Sacken's descriptions, except that the capillary median ground vitta on the prsescutum is less distinct than the description implies. The gray or brownish gray species of this section of Tricyphona may be separated by the following key: 1. Scape of the antennae yellowish or brownish yellow, the flagelluin much darker, dark brown; abdominal tergites brown, the margins of the segments pale producing a cingulated appear- ance; wings with large rounded clouds at the tips of the longitudinal veins and along the cross-veins vernalis Osten Sacken. Scape of the antennae dark brown, concolorous with the flagellum; abdominal tergites brown, unbanded; wings with the pattern almost obsolete, reduced to tiny dots and seams paludicola, sp. n. The following ecological notes on Tricyphona paludicola are taken from my field notes, dated May 13, 1916, 10-11 A.M., at the McLean bogs where we were engaged in making a biological survey of the region under the personal direction of Dr. James G. Needham. 15 Proceedings of The Academy of Natural Sciences of Philadelphia, pp. 291, 292, 1861, as Amalopis. 36 540 PROCEEDINGS OF THE ACADEMY OF [Oct., The species occurs in the Alnus association a short distance east of Round Pond, in company with Tipula dejecta Walker, the only other crane-fly on the wing at this date and hour. The water is stagnant or nearly so with the little pools filled with an algal growth, kindly determined for me by Dr. J. R. Schramm, of Cornell University, as being near Microspora and Tribonema, abun- dant; (Edegonium sp. and Spirogyra sp., the latter conjugating laterally, and some Mougeotia, Vaucheria, etc., with many Diatoms; in addition to these there is a dense growth of young seedlings of Impatiens hi flora. The mud is so soft that it is necessary to wade knee-deep in order to explore this region. There is still ice down underneath the stratum and the Alnus is just coming into leaf, allowing the sun to light up the ground underneath. The dominant herbaceous plants at this time were Carex aquatilis, Saxifraga pennsyl- vanica, with the plants in bud and the stalks not more than six to nine inches high, and Caltha palustris in full flower. There is no doubt but that the Tipula and the present species both emerged from the stagnant pools formed in the marsh adjoining- Grassy Creek. Both species of crane-flies were common, but the Tipula was more in evidence by its larger size and habit of flying. The Tricyphona was usually found resting on the saxifrage or on the inclined side of alder limbs, the males often fluttering about from place to place a short distance above the ground, never very rapidly. The females were found resting on the alder stems, inactive, and the males were presumably searching for them. In the afternoon when the warmth of the sun made itself felt, none of the Tricyphona and only a few of the Tipula were in evidence in this haunt, their places having been taken by dense swarms of Chironomiclae and a very few of the crane-fly, Erioptera septemtrionis Osten Sacken. On May 20, Mr. P. A. Claassen found a male and a female in his tent-traps set near this place, proving that the immature stages are spent in the mud beneath. RHAPHIDOLABIS Osten Sacken. Rhaphidolabis Osten Sacken; Monographs of the Diptera of North America, pt, 4, p. 284 (1869). Subgenus RHAPHIDOLABINA subgen. n. Similar to Rhaphidolabis s. s., differing as follows: Antennae 15-segmented, the first eight segments of the flagellum normal, cylindrical, bearing strong hairs at about midlength, these alternating 191G.] NATURAL SCIENCES OF PHILADELPHIA. 541 in their arrangement, being on the same face on the even segments; the ninth and eleventh segments are smaller and lie between the long, verticillate tenth and twelfth segments; thirteenth segment of the fiagellum long, sigmoid, bearing three long hairs at the apex. Wings with the median cross-vein present, connecting Ml+2 with .1/.. Type of the subgenus, Rhaphidolabis flaveola Osten Sacken. The curious pallid fly that I have deemed best to separate from the other species of the genus is anomalous in many respects and may eventually be placed nearer to Tricyphona, where indeed it was provisionally assigned by Needham.16 It is certainly more distinct from Rhaphidolabis than is Plectromyia which has herein been con- sidered to have subgeneric value. Under these circumstances it may be better to call the genus Plectromyia, that name having page-priority over Rhaphidolabis, but for the present the latter name has been retained. The American species of the genus may be separated by the following key: 1. Antennse 15-segmented; cross- vein m present (subgenus Rhaphi- dolabina). (Northeastern United States.) flaveola Osten Sacken. Antennse 13-segmented; cross-vein m absent 2 2. Cell Mi absent (subgenus Plectromyia). (Northeastern United States.) modesta Osten Sacken. Cell Mi present (subgenus Rhaphidolabis) 3 3. Cell Rz petiolate 4 Cell R2 sessile 6 4. Wings whitish hyaline with a dark brown, oval stigma. (Eastern Rocky Mountain region.) neomexicana Alexander. Wings without a clearly denned, dark brown stigma 5 5. Antennse of the male elongated; Rs long, straight, the distance between Sc2 and the origin of the sector being less than the length of the sector. (Western United States.) polymeroides Alexander. Antennse of the male short; Rs short, arcuated, the distance between Sc2 and the origin of the sector about two times the length of the sector. (Eastern United States.) tenuipes Osten Sacken. 6. Coloration grayish brown, the prsescutum with three dark brown stripes; abdomen dark brown with paler caudal margins to the segments; wings very pale brown, the radial sector very short, arcuated or angulated. (Northeastern United States.) cayuga sp. n. 16 Twenty-third Report of the New York State Entomologist, PL 25, fig. 3, 1907. as Amalopis. 542 PROCEEDINGS OF THE ACADEMY OF [Oct., Coloration reddish brown, the prsescutum with three indistinct stripes; abdomen yellowish brown, the hypopygium bright yellow; wings nearly hyaline, the radial sector somewhat elongated, arcuated. (Northeastern United States.) rubescens sp. n. The following general statements may be made regarding these species : Rhaphidolabis (Rhaphidolabina) flaveola Osten Sacken. (Plate XXVIII, fig. 54.) Canadian life-zone of the northeastern United States and eastern Canada, Osten Sacken's Maryland type being the most southern record. It is abundant from Ontario and Maine south to Maryland. In New York and New England it flies from May 30 to September 21, being most numerous in June. It may be looked for in cold, damp, shady places, such as along mountain streams and similar situations. Rhaphidolabis (Plectromyiaj modesta Osten Sacken. (Plate XXVIII, fig. 55.) Canadian life-zone of the northeastern United States, known only from the White Mountains, New Hampshire, the type-locality, and the southern Adirondack Mountains, New York. It is found along small mountain streams, flying in June. Rhaphidolabis (Rhaphidolabis) neomexicana Alexander. Rocky Mountain region, known from two stations in Colorado and one in New Mexico. Rhaphidolabis (Rhaphidolabis) polymeroides Alexander. Known only from the type-locality, Eureka, Humboldt County, California, May 22, 1903 (H. S. Barber). Rhaphidolabis (Rhaphidolabis) tenuipes Osten Sacken. (Plate XXVIII, fig. 56.) Canadian and Canadian-Transitional life-zones of the eastern United States, from Maine to Georgia, flying in April and May in the south, a little later in the north, and reappearing in late summer. Rhaphidolabis (Rhaphidolabis) cayuga sp. n. (Plate XXVIII, fig. 57.) Canadian-Transitional zones of the northeastern United States. This is the earliest species of the genus in the north, appearing on the wing in April and early May, reappearing in August. In New York it comes with the very first of the early spring crane-flies, such as Ormosia nubila, 0. innocens, Limnophila brevifurca, Tipula collaris, T. dejecta, etc. Rhaphidolabis (Rhaphidolabis) rubescens sp. n. (Plate XXVIII, fig. 58.) Canadian life-zone of the northeastern United States, appearing on the wing a little later than does the last (the first half of June). It is characteristic of cold Canadian woods near running water. 1916.] NATURAL SCIENCES OF PHILADELPHIA. 543 It is probable that, like the Last-named species, ii reappears in August as described under R. tenuipes, such species presumably 1 >eing double-brooded. Rhaphidolabis (Rhaphidolabis) cayuga Bp. d. Head brownish gray; thorax grayish brown with three dark brown stripes; abdomen dark brown, the segments narrowly ringed with paler; wings pale- brown; cell R2 sessile, Rs very short, arcuated or angulated; cell 1st M2 open by the atrophy of the median cross-vein; cell Mi short. Male. — Length, 5-5.4 mm.; wing, 6.3-6.6 mm. I' < male. — Length, 6.6 mm.; wing, 7.7 mm. Rostrum and palpi dark brown. Antennae dark brown, the flagellar segments short-cylindrical. Head brownish gray. Mesonotum grayish brown, the praescutum with three dark brown stripes, the middle stripe broadest, ending before the suture; lateral stripes narrow and less distinct; scutum light brown, the lobes largely dark brown; scutellum and postnotum dark with a heavy gray bloom. Pleura dark brown with a gray bloom. Halteres light yellow, the knobs dark brown. Legs with the coxae and trochanters dark brown; femora similar, a little paler at the extreme base; tibiae and tarsi dark brown. Wings with a light brown tinge, stigma a little darker but poorly defined, veins dark brown. Venation (Plate XXVIII, fig. 57) : Sc long, Sc2 far removed from its tip ; distance between Sc2 and the origin of Rs about twice the length of the sector; Rs very short, arcuated, angulated, or sometimes spurred; cell Mi short and wreak, tending to be evanescent, less than one-half the length of cell Ms. Abdominal segments dark browm, the caudal margins of the terminal segments narrowly ringed with paler; hypopygium brownish yellow. Habitat. — Northeastern United States. Holotype, d", McLean, Tompkins County, New York, May 7. 1916 (Alexander). Allotype, 9 , with the type. Paratopotypes, 15 cf 9 ; paratype, 1 cf, near Johnstown, Fulton County, New York, August 19, 1916 (Alexander). Type in the collection of the author. This is the species figured by Needham under the name tenuipes,17 the real tenuipes being shown in the same work, Plate 19, fig. 2. "Twenty-third Report of the New York State Entomologist, PL 13, fig. 1 (1907). 544 PROCEEDINGS OF THE ACADEMY OF [Oct., The types occurred rather abundantly along a small woodland stream and were found commonly resting on the trunks of sugar maples, swarming out into the air at short intervals. The species occurred with the following crane-fly associates : Ormosia innocens, 0. nubila, 0. rubella, Erioptera septemtrionis, Limnophila brevifurca, Adelphomyia ?ninuta, Ula elegans, Pedicia conterminata and Tipula dejecta. Rhaphidolabis (Rhaphidolabis) rubescens sp. n. Head light silvery gray; mesonotum reddish, sparsely gray pruinose, with three indistinct brown stripes; abdomen yellowish brown, the hypopygium bright yellow; wings nearly hyaline; -cell R2 sessile; Rs arcuated, rather elongate; cell 1st M2 open by the atrophy of m; cell Mi moderate. Male. — Length, 5.3-5.5 mm.; wing, 6.3-6.6 mm. Female. — Length 5.5-5.6 mm.; wing, 6.5-7 mm. Rostrum and palpi dark brown. Antennae with the basal segments brown, sparsely grayish pruinose; praescutum with three indistinct brown stripes, lateral stripes less evident, median stripe narrowed behind and becoming indistinct at the suture; scutum with the lobes brownish gray, the median area dull reddish yellow; scutellum pale brownish yellow, gray pruinose; postnotum light reddish with a gray bloom. Pleura light reddish with a sparse gray bloom. Halteres pale, the knobs brown. Legs with the coxae and trochanters light brownish yellow; femora and tibiae brownish yellow, the latter a little darkened towards their tips; tarsi brown. Wings nearly hyaline, stigma very pale to indistinct, veins dark brown. Venation (Plate XXVIII, fig. 58): Sc long, ending at nearly midlength of R2; distance between Sc2 and the origin of the sector about twice the length of the latter; Rs rather long, strongly arcuated, but not angulated; cell R2 sessile, sometimes broadly sessile; cross-vein r at the tip of Ri] cell 1st M2 open by the atrophy of m; cell Mx present, about one-half as deep as cell M%. Abdomen pale yellowish brown, the lateral margins more yellowish, the hypopygium bright yellow. Habitat. — Northeastern United States. Holotype, d* , Simmons woods, Gloversville, Fulton County, New York, altitude 900 feet, June 22, 1916 (Alexander). Allotype, 9 , topotypic, June 12, 1916. Paratopotypes, 20 & 9 , June 9, 1914; June 12 to 22, 1916. Type in the collection of the author. The ecological conditions under which this species lives have been 1916.] NATURAL SCIENCES OF PHILADELPHIA. 545 discu— id in the second part of this series of papers18 under the account of Tipula cayuga Alexander. A less detailed notice of the associates taken with the type will be found in the present paper under the account of Limnophila edwardi. Family PTYCHOPTERLLX&2. BITTACOMORPHA Westwood. Bittacomorpha Westwood; London and Edinburgh Philosophical Magazine and Journal of Science, vol. (i, p. 281 (1S35). Subgenus BITTACOMORPHELLA subgcn. n. Agrees with Bittacomorpha s. s., but the apical cells of the wings with a sparse, strong pubescence, including the tip of cell Sc, all of 2nd Ri, tips of R3, Rt, R& and 2nd M; in B. sackeni Roder, the pubescence is even more extensive, including the end of cell C, first Ri, all of cell R4, almost the outer half of cells R3 and R&, and the ends of 2nd M and Cur, metatarsi of the legs not swollen. A cor- related character is the lack of a white ring near the base of the metatarsi. Type of the subgenus, Bittacomorpha jonesi Johnson. There are four species of this genus nowr known, two belonging to each subgenus, and their general distribution, seasonal and geo- graphical, may be summarized as follows: Bittacomorpha (Bittacomorpha) clavipes Fabricius. The "Phantom Crane-fly" is one of our commonest and best- known species. It is a fly of the Canadian-Transitional to the Austral zones and has a wide range throughout America east of the Rockies, from Ontario, Quebec, New Brunswick, Nova Scotia and Newfoundland south to Florida, west to Manitoba and South Dakota. In New York and New England it is on the wing from May 17 to September 23, being common throughout the summer; in the southern part of its range it appears as early as February. The flies are abundant in lowr, wet swales, swamps, and along lakes and ponds. The curious rust-red lava with an extensile breathing tube is as remarkable as the adult fly. Bittacomorpha (Bittacomorpha) occidentalis Aldrich. Western United States, ranging from Washington to California, the latter records being for mid-May. Bittacomorpha (Bittacomorphella) jonesi Johnson. A fly of the Canadian life-zone of the northeastern United States, 18 Proceedings of The Academy of Natural Sciences of Philadelihia, p. 4, September, 1915. 546 PROCEEDINGS OF THE ACADEMY OF [Oct., ranging from Maine, New Hampshire and Vermont south (in the mountains) to Mt. Toxoway, North Carolina, the type-locality. In New York and New England it flies from June 11 to August 31, being quite numerous in suitable localities throughout the latter half of June and all of July. It is found in cool, shady spots, usually near running water or springs, being very often found in small dark ravines or along shaded runs. They frequently lurk under dark culverts after the fashion of Dolichopeza and Oropeza. Bittacomorpha (Bittacomorphella) sackenii Roder. Northwestern United States and western Canada, ranging from Queen Charlotte Isle, British Columbia, south to California and east to Colorado. The records indicate that the insect is on the wing in June and early July. The species of Bittacomorpha may be separated by the following key: 1. Wings with the apical cells without a strong pubescence; meta- tarsi swollen and white basally. (Subgen. Bittacomorpha.) 2 Wings with the apical cells with a sparse strong pubescence; metatarsi not swollen, and without white near the base. (Subgen. Bittacomorphella.) 3 2. Dorsum of thorax deep velvety black with a white median line; cell Ra of the wings one-third as long as Rb. (Eastern North America.) clavipes Fabricius.19 Dorsum of thorax shiny black without a white median line; cell Ri of the wings one-half as long as R&. (Western United States.) occidentalis Aldrich.20 3. Tibia? and metatarsi dark brownish black without white (except the extreme tip of the latter in some specimens), segments two and three of the tarsi pure white. (Western North America.) sackenii Roder.21 Tibiae black with a broad white band beyond the base; metatarsi with more or less white at the tip, broadest on the fore legs, narrowest on the hind legs; segments two and three of the tarsi pure white. (Northeastern United States.) jonesi Johnson.22 Explanation of Plates XXV to XXXI. Plate XXV. — Fig. 1. — Wing of Geranomyia canadensis West wood. Fig. 2. — Wing of G. distincta Doane. Fig. 3. — Wing of G. intermedia Walker. Fig. 4. — Wing of G. diversa Osten Sacken. Fig. 5. — Wing of G. tibialis Loew. 19 Tipula clavipes Fabricius; Spec. Insect., vol. 2, p. 404 (1781). 20 Bittacomorpha occidentalis Aldrich; Psyche, vol. 7, p. 201 (1895). 21 Bittacomorpha sackenii Roder; Wien. Entom. Zeit., p. 230 (1890). 22 Bittacomorpha jonesi Johnson; Psyche, vol. 12, pp. 75, 76 (1905). 191G.] NATURAL SCIENCES OF PHILADELPHIA. 547 Fig. <>. — Wing of G. lachrymalis Alexander. Fig. 7. -Wing of G. rostrata Saj . Fig. 8. Wing of G. ibis sp. a. Fig. 9. -Wing of G. insignia Loew. Fig. 10. -Wing of Dicranoptycha germana Osten Sacken. Fig. 11. — Wing nf I), sobrina <>>ten Sacken. Fig. L2. -Winy, nt' l>. winnemana sp. n. Fig. 13. — Wing of Rhamphidia flavipes Macquart. Fig. 14. — Wing of R. mainensis sp. n. Fig. 1"). -Wing of Teuckolabis complexa Osten Sacken. Fig. Hi. — Wing of T. lucida Alexander. Plate XXVI. -Fig. 17. — Wins of Gonomyia (Leiponeura) aUxanderi Johnson. Fig. IS. — -Wing of G. (L.) cinerea Doane. Fig. 19. -Wing of G. (L.) sacandaga Alexander. Fig. 20. — Wing of G. (L.) pleuralis Williston. Fig. 21. — Wing of G. (L.) puer Alexander. Fig. 22.- -Wing of G. (L.) manca Osten Sacken. Fig. 23. — Wing of G. (Gonomyia) mathesoni Alexander. Fig. 24. — Wing of G. (G.) blanda Osten Sacken. Fig. 25. — Wing of G. (G.) calif ornica Alexander. Fig. 26. — Wing of G. ((?.) svlphurella Osten Sacken. Fig. 27. — Wing of G. (G.) flavibasis Alexander. Fig. 28.— Wing of G. (G.) florens Alexander. Fig. 29. — Wing of G. (G.) cognatella Osten Sacken. Fig. 30. — Wing of G. (G.) noueboracensis Alexander. Fig. 31. — Wing of G. (G.) filicauda Alexander. Fig. 32. — Wing of G. (G.) virgata Doane. Fig. 33. — Wing of G. (G.) subcinerea Osten Sacken. Plate XXVII.— Fig. 34. — Wing of Erioptera (Erioptera) laticeps sp. n. Fig. 35. — Wing of E. (Mesocyphona) tantilla sp. n. Fig. 36. — Wing of E. (Empeda) nyctops sp. n. Fig. 37. — Wing of Molophilus fultonensis sp. n. Fig. 38. — Wing of M. nova-ccesariensis sp. n. Fig. 39. — Wing of M. ursinus Osten Sacken. Fig. 40. — Wing of Empedomorpha empedoides Alexander d". Fig. 41. — Wing of Rhabdomaslix (Sacandaga) nionticola sp. n. Fig. 42. — Wing of R. (S.) caudata Lundbeck. Fig. 43. — Wing of R. (S.) flava Alexander. Fig. 44. — Wing of Pterochionea bradleyi sp. n. Fig. 45. — Wing of Limnophila edwardi sp. n. Fig. 46. — Wing of L. sylvia sp. n. Plate XXVIII. — Fig. 47. — Wing of Tricyphona inconstans Osten Sacken. Fig. 48. — Wing of T. calcar Osten Sacken. Fig. 49. — Wing of T. auripennis Osten Sacken. Fig. 50. — Wing of T. hyperborea Osten Sacken. Fig. 51. — Wing of T. katahdin Alexander. Fig. 52. — Wing of T. vernalis Osten Sacken. Fig. 53. — Wing of T. paludicola sp. n. Fig. 54. — Wing of Rhaphidolabis (Rhaphidolabina) flaveola Osten Sacken. Fig. 55. — Wing of R. (Plectromyia) modesta Osten Sacken. Fig. 56. — Wing of R. (Rhaphidolabis) tenuipes Osten Sacken. Fig. 57. — Wing of R. (R.) cayuga sp. n. Fig. 58. — Wing of R. (R.) rubescens sp. n. Plate XXIX. — Fig. 59. — Hypopygium of Gonomyia (Leiponeura) alexanderi; dorsal aspect of the pleural appendages; d = dorsal appendage; v = ven- tral appendage. Fig. 60. — Hypopygium of G. (L.) helophila Alexander; dorsal aspectTof the pleural appendages; lettering as in Fig. 59. 548 PROCEEDINGS OF THE ACADEMY OF [Oct., Fig. 61. — Hypopygium of G. (L.) alexanderi; ventral aspect of the pleural appendages; lettering as in Fig. 59. Fig. 62. — Hypopygium of G. (L.) cinerea; ventral aspect of the pleural appendages; lettering as in Fig. 59. Fig. 63. — Hypopygium of G. (L.) puer; dorsal aspect of right pleurite; p.gd. = penis-guard. Fig. 64. — Hypopygium of G. (L.) manca; dorsal aspect of right pleurite; lettering as in Fig. 63. Fig. 65. — Hypopygium of G. (L.) manca; lateral aspect; lettering as in Fig. 63. Fig. 66. — Hypopygium of G. (Gonomyia) californica; dorsal aspect of the right pleurite; lettering as in Figs. 59 and 63. Fig. 67. — Hypopygium of G. (G.) californica; ventral aspect; lettering as in Figs. 59 and 63. Fig. 68. — Hypopygium of G. (G.) blanda; dorsal aspect of the right pleurite; • lettering as in Fig. 59. Fig. 69. — Hypopygium of G. (G.) blanda; ventral aspect of the ventral appendage of the pleurite. Fig. 70. — Hypopygium of G. (G.) svlphurella; dorsal aspect of the right pleurite. Fig. 71. — Hypopygium of G. (G.) florens; dorsal aspect of the right pleurite; k = dorsal fleshy knob; d = first or dorsal appendage; 2 = second pleural appendage; 3 = third or ventral pleural appendage. Fig. 72. — Hypopygium of G. (G.) florens; lateral aspect of the penis-guard. Fig. 73. — Hypopygium of G. (G.) cognatella; lateral aspect of the penis-guard. Fig. 74. — Hypopygium of G. (G.) cognatella; dorsal aspect of the right pleurite; lettering as in Fig. 71. Fig. 75. — Hypopygium of G. (G.) cognatella; lateral aspect of the pleurite; lettering as in Fig. 71. Plate XXX. — Fig. 76. — Hypopygium of Gonomyia (Gonomyia) flavibasis; dorso-lateral aspect. Fig. 77. — Hypopygium of G. (G.) flavibasis; ventral aspect of the pleural appendages. Fig. 78. — Hypopygium of G. (G.) flavibasis; apex of the ventral appendages. Fig. 79. — Hypopygium of G. (G.) noveboracensis; pleural appendages, ventral aspect. Fig. 80. — Hypopygium of G. (G.) noveboracensis; ventral aspect of the left side of the penis-guard and the gonapophyses ; a, b, c = horns of the fused cylinder. Fig. 81. — Hypopygium of G. (G.) filicauda; dorsal aspect of the right pleurite; d = dorsal pleural appendage; v = ventral pleural appendage. Fig. 82. — Hypopygium of G. (G.) filicauda; lateral aspect of the penis-guard. Fig. 83. — Hypopygium of G. (G.) subcinerea; dorsal aspect of the right pleurite; lettering as in Fig. 81. Fig. 84. — Hypopygium of G. (G.) subcinerea; ventral aspect of the left side of the penis-guard. Fig. 85. — Hypopygium of G. (G.) subcinerea; dorsal pleural appendage. Fig. 86. — Hypopygium of G. (G.) cequalis Alexander; dorsal aspect of the right pleurite: lettering as in Fig. 81; a.t. = anal tube. Fig. 87. — Hypopygium of G. (G.) virgata; dorsal aspect of the right pleurite; lettering as in Fig. 81; 2 = second pleural appendage. Fig. 88. — Hypopygium of G. (G.) unicolor Alexander; ventral aspect of the penis-guard and the gonapophyses; p.gd. = penis-guard; a = subtending arm; g= gonapophyse. Fig. 89. — Hypopygium of G. (G.) unicolor; dorsal aspect of the right pleurite; lettering as in Fig. 81. Fig. 90. — Hypopygium of G. (G.) mexicana Alexander; ventral aspect of the penis-guard; lettering as in Fig. 88. Fig. 91. — Hypopygium of G. (G.) mexicana; dorsal aspect of the right pleurite; lettering as in Figs. 81 and 87. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXV. ALEXANDER: CRANE-FLIES. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXVI. ALEXANDER: CRANE-FLIES. PROC. ACAD. NAT. SCI. PHILA. 1916 PLATE X ALEXANDER: CRANE-FLIES. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXVIII. 52 55 ALEXANDER: CRANE-FLIES. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXX. ALEXANDER: CRANE-FLIES. PROC. ACAD. NAT. SCI. PHILA. 1916. PLATE XXXI. ALEXANDER: CRANE-FLIES. PROC. ACAD. NAT. SCI. PHILA. 191' ; plate :■: ALEXANDER: CRANE-FLIES. 1916.] N \TURAL SCIENCES OF PHILADELPHIA. 549 Plate XXXI.— Fig. 92. -Habit of Pterochionca bradleyi, with the wings and middle leg removed. Fig. 93. -Antenna of Pterochionea bradleyi. Fig. 94. — Hypopygium of Pterochionea bradleyi; dorsal aspect of the right pleurite. Fig. 95. — Hypopygium of Molophilus fultonensis; ventral aspect of the ventral pleural hook. 1'i-i. (.H'>. — Hypopygium of M. fultonensis; lateral aspect. pj„ 97.— Hypopygium of Erioptera laticeps; dorsal aspect; 9t = ninth tergite; pi — ninth pleurite. Fig. 98.— Hypopygium of E. nyctops; dorsal aspect; a, b, c = pleural appendages. 550 PROCEEDINGS OF THE ACADEMY OF [Nov., NEW SPECIES OF NORTH AMERICAN BEES OF THE GENUS ANDRENA FROM WEST OF THE 100TH MERIDIAN CONTAINED IN THE COLLECTIONS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. BY HENRY L. VIERECK The following descriptions are contributions toward a monograph of the Pan-American species of Andrena. The proportions are in terms of divisions of a disc micrometer, with 100 divisions to 1 mm., used in a Spencer Lens Co. binocular with 10 x ocular and 40 mm. objective, each division equals nearly 42/,. Andrena (Andrena) azygos new species. Type.— No. 4,010. The Academy of Natural Sciences of Phila- delphia. Type Locality.— Cloudcroft, New Mexico, June 16, 1902 (H. L. Viereck). Related to A. (A.) asmi Viereck. Male. — Length 8.5 mm.; body black, mostly covered with ochreous hair; head with its facial line : transfacial line :: 45 : 64, axial line : temporal line :: 32 : 22, temples produced, almost right angular, the angle apparently opposite middle of eye, malar line : joint 3 of antennae :: 3 : 7, elevated portion of malar space much shorter than the depressed portion, head covered with ochreous hairs except along the inner eye margin, upper eye margin, and outer eye margin above the middle of temples and on the front where the hairs are black, front indistinctly punctured, dullish, reticulated and finely longitudinally striate, ocellocular line : ocelloccipital line :: 14 : 5, face shining, distinctly punctured, its punctures from one to three puncture widths apart, clypeus nearly planate, clypeus apparently slightly concave near apex, more shining and more distinctly punctured than the face, not elevated directly above the apical margin, clypearea wanting, sculpture of the clypeus not hidden by the moustache, labrarea with a broad rounded emargina- tion, polished, its width at base : length down the middle :: 7 : 3, width at base : greatest length :: 7 : 4, width at apex : length down the middle :: 6 : 3, labrarea at base apparently half as wide as the labrum, the latter with a fringe of ochreous hairs, joint 3 of antennae : 4 :: 7 : 8, joint 4 and following joints from a little more than one 1916.] NATURAL SCIENCES OF PHILADELPHIA. 55] and one-half times as long as thick to nearly twice as long as thick, dullish, flagel almost straight m outline, antennae blackish through- out, mandibles nearly typical, rather slender, extending beyond the outer edge of the labrun] and nearly to end of the basal third of its fellow, black except for the apical fourth which is dull dark reddish, palpi nearly typical; thorax covered with an abundance of dark, dull, ochreous hairs, hairs of dorsulum seemingly shorter than hair of mesopleurae, dorsulum dullish, finely reticulated and sparsely punctured, the punctures indistinct and from two to five or more puncture widths apart, mostly the latter, notauli represented by a shining line, mesopleurae dullish with pale ochreous hairs throughout, finely reticulated and mostly covered with shallow pits, that are mostly three or more pit widths apart, scutel hairy and sculptured much like the dorsulum, partly polished, partly sculptured like the dorsulum, metanotum hairy and sculptured like the dorsulum except that the sculpture is denser, tegulae dark brown, polished, wing base mostly pale stramineous, subcosta blackish, stigma brownish stramineous with a blackish tinge, rest of veins stramineous with a blackish tinge, first recurrent vein received by the second submarginal cell beyond the middle and a little nearer to the second transver