= HT |e NL NAG) evr ry vl ih (‘| Pee rat EN OF THE A(tlinois State Laboratory NATURAL HISTORY URBANA, ILLINOIS. NOB Mee Tbk CONTRIBUTIONS TO A KNOWLEDGE OF THE NATURAL History oF ILLINo!s. 1887-1895. PEORIA, ILL. J. W FRANKS & SONS, PRINTERS AND BINDERS. SONTENTS. - PAGE, Article I.—Notes on Some Illinois Microgasters, with Descriptions of New Species. By CLARENCE M. WEED. August, 1887........... 1 Article Il.—Jasside of Illinois. Part I. By CHARLES W. WoopworTH. (PPL RESO) OTe) Ye) ea [che YS rrr Sees pee Article I11.—On the Parasites of the Lesser Apple Leaf-roller, Teras minuta (Robs.). By CLARENCE M. WEED. October, 1887..... oe 380 Article IV.—On the Anatomy and Histology of a New Earthworm (Dip- locardi communis, gen. et sp. nov.). By H. GARMAN. (5 Pe E MMP AUTTST SLMS a a5, cia jew ve tse crews sic weiss calecmielele de 47 Article V.—A Descriptive Catalogue of the Phalangiin of Illinois. By CLARENCE M. WEED. (3 Figures.) January, 1890....-. 79 Article VI.—A Partial Bibliography of the Phalangiinz of North Amer. ica. By CLARENCE M. WEED. January, 1890.... .............. 99 Article VII.—On an American Earthworm of the Family Phreoryetidze. By S. A. ForBES. (3 Plates.) September, 1890................ 107 Article VIIL—An American Terrestrial Leech. By S. A. FORBES. Sep- ; REMEE GOO, 25020... -. +. - pee So inhi Anke SeccnanAs RCW ate weet PAE 7. rticle [IX.—A-Preliminary Report on the Animals of the Mississippi Bottoms near Quiney, Illinois, in August, 1888. Part l. By H. Panam oepiember, 1890:.::........ 5 «22.0.5... RRR en Article X.—Nctes on Illinois Reptilesand Amphibians, including sev- eral Specimens not before recorded from the Northern States PuttaeM@AN. september, 1890,...........5.-......0.000. eee 185 | Article XI.—Desceriptions of New Cynipide in the Collection of the Illinois State Laboratory of Natural History. By ©. P. GILLETTE. + se) ey sc 19] _ Artiele XII.—Sixth Contribution to a Knowledge of the Life History of certain Little-known Aphididae By CLARENCE M. WEED. May, OES ee tL ss Ue "Article XIIL—A Synopsis of the Reptiles and Amphibians of Illinois. By H. GARMAN. (7 Plates.) October, 1892........... To ‘Article XIV.--Bibliographical and Synonymical Catalogue of the De- seribed Membracide of North America. By F. W. GopING. Jan- Ts oy Ae ee ee | Article XV.—Synopsis of the Subfamilies and Genera of the North American Cereopide, with a Bibliographical and Synonymical Catalogue of the Described Species of North America. By F. W. RIM MIMO, AIBOD).... <0. -0- 2.2... eg datinis ay an ee t a Ae Poe ate i | ie me ats ET LIN OF THE ILLINOIS STATE LABORATORY aioe HISTORY. VOLUME IIL. ArtictE JI.—Notes on Some Illinois Microgasters: with De- scriptions of New Species. By CuarEnce M. Wuep, M. Se. [In working over the material by which the interesting croup of Microgasters is represented in the collections of the | Laboratory, so much of interest was found that it was thought worth while to record at this time some of the more important facts. The writer desires to express his thanks to Prof. 8. A. Forbes for permission to study the collections and use the notes, as well as for many other favors; to Dr. C. V. Riley, who has very kindly verified the determinations; and to Dr. A. 8. Packard, Prof. H. Garman, and Mr. Chas. W. Woodworth for favors received. | Micropuitis CERATOMIA, Riley. This species was bred by Dr. Riley from Ceratomia quad- ricornis, in Missouri.* During the summer of 1885, from a Jarva of the sphinx just mentioned, confined in a breeding cage at Champaign, there emerged eighty-four of the Microplitis grubs, which spun parallel, leathery, ribbed cocoons upon the back of their host. The cocoons were formed in two longitud- inal series, one on each side of the dorso-median line of the larva, which were connected with a posterior transverse series. On the 25th of May, 1886, the adults began to emerge, and con- tinued to issue until June 5. They agree with Riley’s descrip- tion (1. ¢.), except that they are larger, the majority of them being 3 mm. long, and some even reaching 3.5 mm. The *Notes on North American Microgasters, Trans. St. Louis Acad. Sci., Vol. LV., p. 303 [8]. 2 Illinois State Laboratory of Natural History. depth of coloring of the costa and stigma varies considerably in the same lot of specimens, in the majority of them being of the normal piceous, but in occasional specimens becoming lighter. From another lot of Ceratomia larvz, there were ob-- tained August 1 of the same season, similar cocoons, the adults from which began to emerge August 12, and all had issued within a few days thereafter. Dr. Riley mentions (1. ¢.) hay- ing bred this large variety from masses of cocoons spun regu- ularly side by side, as were our specimens, but having no ribs as ours have. Micropuitis MAMESTRA, Sp. Nn. Under this name I describe a well-marked species bred from the larve of Mamestra picta, at Normal, in 1884. In a breeding cage containing a large lot of Mamestra larve there were noticed July 2, two specimens, each having a peculiar ribbed cocoon fastened transversely between the anal prolegs. These cocoons were isolated, and August 23 there had emerged from them the two Microplitis females here described. Cocoon.—5 mm. long, 2 mm. wide. Reddish brown, cylin- drical, with a pointed cap at each end, and about ten slightly oblique ribs running longitudinally. Tough and without loose threads. The cap forms a perfect circle, and in the specimens at hand one on each cocoon had been entirely separated by the insect before emerging. The corners are well developed, so that a longitudinal section, without the caps, would be of the form of a rectangular parallelogram. Described from two specimens found attached, singly, be- tween the anal prolegs of larvee of Mamestra picta, Harr. Imago, ?.—Length, 3 mm. Black; antennae, mandibles, and labrum, reddish brown; palpi, and legs, including whole of cox, and more or less of the under side of abdomen, together with a portion of the margins of terga of first and second ab- dominal segments ferruginous; claws blackish. Wings hyaline; tegule, with inner portions of costa and nervures, approaching ferruginous (being slightly more yellowish than legs), and outer portion testaceous. Inner half of stigma same color as inner portions of costa, nearly transparent; outer portions darker, clouded. Antennz not quite as long as body; joints 3-15, Some Illinois Microgasters. 3 slightly constricted at middle, the terminal joint appearing flattened when seen from above, and enlarged at the middle and tapering to a point when seen from the side. Mesonotum confluently punctured. Metanotum coarsely reticulated, the posterior margin of the metascutum being raised, and the metascutellum having a prominent longitudinal median carina. Abdomen shorter than thorax; basal segment vertical, the ter- gum finely reticulated, with a median groove extending from anterior margin two thirds of its length, and a slight tuberele on middle of posterior margin; tergum of second and following segments smooth and shining, with sparse pubescence. Radial vein arising from middle of stigma, nearly forming a right angle with basal nervure of the quadrate areolet; a white spot on cubital vein at base of areolet, and another on the vein clos- ing the areolet exteriorly, just before its juncture with the cubital vein. Side of stigma bordering first cubital cell very slightly swollen; that bordering radial cell straight. Apical nervures slender, but easily seen. Described from two females bred from Mamestra picta, Harr. This species is very distinct from M. ceratomie, Riley, and is easily distinguished from M. gortyne, Riley, by its larger size, quadrate areolet, red posterior coxe, etc. APANTELES CONGREGATUS, Say. A long series of this abundant and variable species is to be found in the Laboratory collections. Adult specimens have been taken with the sweep-net at Normal, McLean County, July 1, 1882, and June 27, 1883; at Anna, Union County, September 13, 1883; and at Urbana, Champaign County, June 15, 1885. Some were also collected in woods near Pekin, Tazewell County, August 14, 1883, and still others were found among some col- lections made by beating the foliage of Ampelopsis quinquefo- lia at Urbana, May 23, 1885. Large numbers of specimens of this Apanteles have also been bred at various times from the larvee of our two common species of tomato-worms, — Phlegethontius carolina, and P. celeus. Cocoons obtained from the former species were received from Swanwick, II]., Sept. 1, 1884, and within five days 4 Illinois State Laboratory of Natural History. the flies had all emerged. Another lot was bred at Normal dur- ing the same season, the dates of emergence from the cocoons being almost the same as for those just mentioned. In 1879, another series was bred from larve of this sphinx in August. During August, 1882, and September, 1884, these parasites were also bred from P. celeus, one lot being collected at Normal, and the other at Godfrey. The cocoons of all these specimens were of the usual white kind, with little loose silk. The variety of A. congregatus bred by Mr. Scudder fronr Pieris rape, described by Dr. Packard* as Microgaster pieridis, and referred by Dr. Rileyt to the species mentioned (the variety name pieridivora being substituted for pieridis, because the latter was preoccupied ), was frequently bred during the summer of 1886 from larve of Pieris rape, brought to the Laboratory because they showed signs of disease. Especial mention may be made of three lots of the parasites bred by Prof. Garman, the cocoons of one lot being of a lemon-yellow color; those of another being of about the same shade, excepting a slight green- ish tinge in some specimens; and those of the third being creamy white, with scarcely a trace of yellow. Yet there is no men- tionable difference in the adults of the different lots. There were, on an average, about thirty cocoons obtained from each Pieris larva. The Apanteles larvee of one set emerged from the skin of their host August 11, and came forth from the cocoons as adults August 29. Another lot formed cocoons September 2, and the adults were found dead in the breeding box September 22. On page 104 of the Twelfth Report of the State Entomo- logist of Illinois, Prof. Forbes has described an Apanteles bred from the larve of Mesogruphe (Orobena) rimosalis, Guenée, under the name Apanteles orobenw. A critical examination of a larger series of specimens than was then at hand, shows that this is but a variety of Apanteles congregatus, distinguished by the dark anterior and intermediate coxve and trochanters. In some specimens these parts of the front and middle legs are almost as light-colored as in the normal specimens from sphinx *Proc. Bost. Soc. Nat. Hist., Vol. XXL, p. 26. tAm. Nat., Vol. XVI, p. 680. Some Illinois Microgasters. 5) larve. Hence these insects should be known as A. congregatus, Say, var. orobene, Forbes. APANTELES MILITARIS, Walsh. This well-known species, as would be expected from a knowledge of its habits, was found in especial abundance dur- ing the years when the army worm was destructive. In 1882 specimens were sent to the office by Mr. D. 8. Harris, of Cuba, UL, with the statement that he had bred them from the army worm, which was then very abundant in that vicinity. Dur- ring the same season, this notorious pest was destructively abundant in certain portions of McLean County, but its opera- tions were rapidly checked by A. militaris, which is the species referred to by Prof. Forbes on page 102 of his First Report (the twelfth of the series). Describing the history of a brood of worms observed in a certain field, he writes: ‘‘ When first no- ticed, on the 24th of June, these worms were doing serious damage to a heavy growth of timothy on high ground, march- ing from one side of the lawn to the other. By the 3d of July, the season for the transformation to pupze had been reached, but apparently not over twenty-five per cent. of the worms suc- ceeded in effecting the change, the remainder dying in such numbers that the ground was reeking with a sickening stench. At the same time clusters of the cocoons of one of the common parasites of the army worm were found everywhere abundant _on the surface of the ground, and in some cases on the dried remains of the army worm itself. Of seventy-six pupe of the worm, collected in this field at this time, but one reached maturity.” From cocoons collected in this field July 2, the adult Apanteles continued to emerge until July 20. The only specimens bred in 1886 were from a mass of thirty-nine white cocoons loosely fastened togther, parallel to each other, found on a leaf of Indian corn in the field, August 2. The flies emerged August 11. APANTELES cacacrm, Riley. A single specimen (2) of this species was bred during May, 1886, from a larva of Teras minuta, Robinson (malivorana, Le B.; cinderella, Riley). The cocoon was attached to a leaf. It is thin and white, 6 mm. long and about one third as wide. 6 Illinois State Laboratory of Natural History. APANTELES SARROTHRIP A, sp. nl. On June 30, 1884, there was noticed in a breeding cage, at Normal, containing larve of Sarrothripa lintneriana, a dead larva in an imperfect cocoon, surrounded by cocoons of some hymenopterous parasite. A few days later there emerged from the latter six specimens of a well-marked Apanteles, for which I propose the above name. Unfortunately the cocoons were not saved, so that I am unable to describe them at this time. Imago.—Length 2.5 mm. 2, 2. Black; palpi white; labrum and mandibles testaceous; antenne ferruginous; legs light red except posterior coxee, which are black. Wings hyaline; tegule whitish; veins pale yellow except apical portion of costa which, with the stigma, is testaceous. Lateral membranous margins of terga of the three anterior segments, posterior portion of ter- gum of third segment, and sides and ventrum of abdomen, testaceous, lighter anteriorly. Dorsal portion of abdomen, ex- cept the two anterior terga, piceo- testaceous. Mesonotum shining, with distant, very shallow, punctures, many specimens having a slightly depressed area on the posterior portion of the mesoscutum, each side of the dorso- median line. Scutellum of metathorax with punctures on its anterior portion, and finely reticulated posteriorly; without median carina. ‘Tergum of first abdominal segment longer than wide, finely rugose, narrowing behind. Tergum of second segment also finely ru- gose, the wrinkles diverging obliquely from the anterior mar- gin: sides membranous. Terga of remaining segments smooth and shining. Ovipositor concealed. Radial vein arising slightly beyond the middle of the stigma. Described from six specimens (5 9, 14) bred from a larva of Sarrothripa lintneriana. Much resembling A. congregatus and A. smerintht, but easily distinguished from former by its shining mesonotum, and from latter by the rugose abdominal terga. APANTELES ORNIGIS, sp. Nl. In the mines made by the larve of the apple Ornix (0. geminatella, Pack.) in apple leaves, at Normal, there were found March 21, 1886, many peculiar white, banded, cocoons of some hymenopterous parasite. Between April 27 and May 10 there Some Illinois Microgasters. 7 emerged specimens of a new species of Apanteles, for which the above name is proposed. When the cocoons were collected, the Apanteles larve had not yet changed to pupe. This seems to be a common parasite of the Ornix named, as it was very abundant in the Normal nursery; and I have, found it almost everywhere in the State where its host has been observed. Cocoon.—Length, 3 mm. Width, 1 mm. Oblong cy- lindrical; smooth, white, with a darker appearing central band about .5 mm. wide. The darker appearance of this band is caused, not by any difference in the color of the silk, but because the cocoon is there very much thinner than at the ends. To each end is attached a cord of fine silken threads, which are also fastened to the sides of the leaf-mine, thus suspending the cocoon after the manner of a hammock. Imago.—Length 2 to 2.5mm. 4, 2. Black; palpi white; labrum and mandibles piceo-testaceous. Legs of female light red except base of posterior cox, apical half of posterior tibiz, and posterior tarsi, which are dusky. First pair of legs of male light red, except cox and apical joint, which are black- ish; second pair with more or less black on coxe, femora, and tibize; posterior pair fuscous, with proximal portions of femora and tibiz lighter, and coxe black. Sides and ventral portions of anterior segments of the abdomen with more or less testa- ceous coloring, especially in the males. Wings hyaline; tegu- le piceous; veins testaceous; stigma darker. Antenne pice- ous; slightly longer than the body. Scutum of mesothorax with rather distant shallow punctures, shining; scutellum also shining, with a few very shallow punctures. Scutellum of me- tathorax large, quadrate, reticulated, without median carina. Terga of first two abdominal segments and base of tergum of third segment finely reticulate; remainder smooth and shining. Tergum of basal segment narrowing posteriorly, with mem- branous testaceous borders. Ovipositor one third as long as abdomen. Kadial vein arising beyond the middle of the stigma. Described from twelve specimens (8 ¢, 4 2), bred from Ornix geminatella, Pack. 8 Illinois State Laboratory of Natural History. APANTELES ORAMBI, sp. 0. On the 13th of June, 1886, I found in a breeding cage con- taining larvee of the root web worm, Crambus zeéllus, Fernald, - collected in the vicinity of Champaign, a Crambus cocoon con- taining a dead larva and several Microgaster cocoons. From the latter there emerged between June 19 and 22 several speci- mens of a well-marked species of Apanteles, for which the above name is proposed. Specimens exactly similar were bred during, July from larve of Crambus exsiccatus infesting lawns at Champaign. Doubtless this insect will aid materially in check- ing the ravages of these species of Crambus which are so dif- ficult to subdue by artificial means. — Cocoon.—Length, 3 mm. White, thin, loosely fastened together within the cocoon of the host. Imago.—ULength, 2 mm. ¢, 9. Black; palpi white; man- dibles testaceous; ventrum of abdomen, together with the ter- eum of the third abdominal segment testaceous, lighter anteri- orly. Terga of segments posterior to third, piceo-testaceous. Legs light red, except claws of front and middle pair, and tips of femora, together with the tarsi of posterior pair, which are piceo-testaceous, and posterior coxw, which are black, tipped with red. Wings hyaline; tegule and proximal portion of costa testaceous; stigma and apical portion of costa darker, nearly piceous; veins whitish. Antennz piceous; those of female shorter than the body, of male slightly longer. Mesothorax closely punctured, shining. Scutellum of meta- thorax reticulate. Terga of two first abdominal segments lon- gitudinally rugulose, remainder smooth and shining. Ovipositor concealed. Radius arises slightly beyond the middle of the stigma. Described from many specimens, bred from larvee of Cram- bus zeéllus, Fernald, and C. exsiccatus, Zeller. Articte II. — Jasside of Illinois. Part I.* By CHARLES W. Woopwortu. M. 8. FAMILY JASSIDAi Srat. The insects included under the name Jasside, form a large and well-defined{natural group. They are readily distin- cuishable from members of the allied families as follows: from Cicadidz by the possession of but two oeelli (or none) instead of three, as in the latter family; from Cercopide by having broad transverse posterior coxz instead of conical”ones, and having the posterior tibi# prismatic instead 'of round; and, lastly, from Membracide by having the thorax only slightly convex and not strongly declivous. Aside from this there is a general resemblance between forms of the same family, so that they may be very readily distinguished at a glance; but the above characters are useful chiefly for ‘doubtful cases, before the student becomes familiar with the various forms. By Linneus, in his Systema Nature, this family together with the above enumerated related ones was first all included in the single genus Cicada, which was thus characterized: ‘Rostrum inflexed. Antennae setaceous. Wings 4, mem- branous, deflexed. Feet (generally) saltatorial.” Later, Geoffroy proposed the name Tettigonia for those hay- ing but two ocelli, reserving Cicada for those having three ocelli situated on the vertex. Fabricius in his Entomologia Systematica, 1794, seems to have misunderstood Geoffroy, for he used Tetti- gonia for Cicada and ‘applied the latter name to our! present group Jasside, having separated from them the Cercopide and Membracide as genera, giving them the names Cercopis and *The present article includes only the ‘subfamily. Tettigoninz. I hope soon’ to.complete the_remaining part. I have made use ofthe collections and library of the State Labora- tory of Natural History in preparing the present paper, and wish here to acknowledge the kind favors and encouragement received from the Director, Prof. S. A. Forbes. 10 Illinois State Laboratory of Natural History. Membracis, so that, transposing the names Tettigonia and Ci- cada, we have a series of genera nearly equivalent to the fami- lies of later systematists. I say nearly, because a few aberrant forms of Jassids (such as Ledra) were included in the Mem- bracide. A few other genera were established by Fabricius, - in his later writings, by the dismemberment of these groups, and subsequent authors have added greatly to the list of genera, so that now as many as two hundred have been proposed, of which perhaps half may stand the test of time. STRUCTURE. As in all other true insects, the body is composed of a series of more or less irregular chitinous rings, called segments, dis- posed in three regions, the head, thorax, and abdomen. The head in this group is very variable in shape, but always some- what triangular when seen directly from before or from be- hind, the two large and often prominent eyes forming the up- per corners, and the beak arising from the much reflexed apex. The first of the three segments which comprise the thorax is very prominent above, but small and nearly covered by the in- flexion of the head beneath. The other segments are closely connected, and about equal above and below. The abdomen consists of seven or eight segments tapering backwards and provided near the tip with a rather large genital apparatus. Head. Returning now to the head, we can distinguish two surfaces besides the backside, which is concealed by the thorax: one above, the dorsal surface, more or less flat; and the other, called the face, often very convex, and including all that por- tion looking downward, forward, and to the sides. These planes are separated by a more or less distinct edge known as the front edge. Above the head, between the eyes, and generally surround- ing them, a large variable piece, not very distinctly marked off from the one in front, may be seen, which is known as the ver- tex (PI. L., Fig. 3). The separation from the piece before it, is quite distinct at the sides of the vertex, being by sutures (PI. I., Figs. 1, 2), but often not so at the middle, where it may not be visibly divided at all. Jasside of Illinois. 11 The vertex is aa hiniee inflexed over the front edge of the head, and sometimes does not reach it. In front of or below the vertex, and often not distinctly separable from it, the face extends as a long median piece upon the front, often presenting somewhat the shape of an inverted pear. The upper end varies in shape and position with the size and shape of the vertex. The clypeus is a piece attached to the lower end of the face. It varies much in shape, being round, square, expanded at base or at apex, or constricted at the mid- dle or near the base. On either side of the clypeus is a more or less elongate piece, the lora, which also covers a portion of the face; the inner margin is quite straight, and the outer, curved and sometimes constricted at its upper end. The remaining portion of the cheeks consists of broad ex- panded pieces, which may for convenience be divided into two parts,— one forming a somewhat elevated plane or ridge above the antenne and entirely in front of the eyes, and the other being on a lower plane than the rest: of the front. The outer edge of this lower portion of the cheeks is variable, being some- times bent outward, sometimes inward, but always forming a thin sharp edge. The eyes are somewhat oval organs, situated at the upper posterior corners of the head. They are finely granulate. On the anterior edge, near the antennz, there is in some species, a considerable notch; otherwise the margin is entire. Of even more importance, from a systematic point of view, are the ocelli. These are small round organs often situated on low elevations. In position they are constant in their varia- tion, and therefore of the highest value for classification. Their normal position seems to be at the junction of the vertex, front, and cheeks. In the Tettigoninw they are on the middle of the vertex; in Acocephalini, just before the eyes, on the front edge of the head; in Allygus, and its allies, on the face,— ete. The antenne of Jasside (PI. L., Fig. 4) are almost uniformly setaceous; the basal joint is very large, rounded, about as wide as long; the second is much smaller, but still quite large, and of nearly the same shape; the third is as much smaller than the second as the second is smaller than the first, being smallest at 12 [illinois State Laboratory of Natural History. base, and enlarging nearly to the tip, then decreasing. The suc- ceeding segments are short and decrease regularly in diameter. There are peculiar thickened curved hairs on the third, fourth, and fifth joints. A pecuhar form of antenna is found in . Idiocerus, having comparatively few joints, and the terminal three or four greatly enlarged into a club. The mouth parts consist of five pieces; a greatly enlarged labrum, forming a fleshy proboscis surrounding four slender lancet-like processes homologous with the mandibles and maxille. Thorax. The most anterior segment of the thorax, the prothorax, consists of a large dorsal plate above — the pronotum or disk of the thorax. Beneath (PI. L., Fig. 5), the pleurites and sternum are small, except the episternum, which is often ex- panded into a broad plate which touches the episternum of the other side along the median line. The pronotum covers the edge of the head before and the base of the wings behind. It is square or hexagonal in shape, the corners being designated (beginning from before) as the anterior, posterior, and scu- tellar,— the latter, however, are sometimes wanting. The pleurites are well shown in the figure, and the sternum simply forms the bottom of a groove into which the beak is received. With regard to the two remaining segments little need be said. The dorsal surface is covered by the wings (elytra) to which they give rise, with the exception of a large triangular portion called the scutellum. This piece appears to be composed of part of the dorsum of both segments. The portion covered by the wings is sometimes almost membranous, and is never as strong as the rest of the body wall. The pleuri- tes are on the sides; the epipleure are large and distinct; and the episterna are small. The sterna are transverse and the coxe extremely large. f A pair of legs arises from each thoracic segment (PI. I., Fig. 6). They are alike in general appearance, except that they in- crease greatly in size from before backwards and become propor- tionally more slender and spiny. Hach leg consists of (1) a large rounded oval basal joint, the coxa, which is partly received in a hole in the thorax, the coxal cavity; (2) a small, some- what triangular joint, the trochanter; (3) the femur, a long, Jasside of Illinois. 13 thick, and strong joint; (4) a slender, somewhat prismatic, and more or less spiny tibia; and (5) a three-jointed tarsus terminated by a pair of thick slightly curved claws. The anterior wings, or elytra, are long, rather slender organs, quite hard in texture, forming a shield to the deli- cate true wings. The inner basal triangular portion, called the clavum or claval area, is separated from the rest of the wings by a bend or suture known as the claval suture. The venation of the anterior wings is of considerable value for classification. The veins arising from the base have been called sectors. The one on the margin is called the marginal vein. ‘Transverse veins are those appearing towards the tip, and connecting sectors or their branches. The areas between the veins are known as basal and apical cells, and when more than one series exists beyond the basal cells, the additional ones are called the anteapical cells. The veins in the clavum are the claval veins. The hind wings have about six sectors, variously forked and united by a few cross-veins, and afford some of the best and most tangible generic characters. The marginal vein does not lie on the margin but parallel with it. It does not ex- tend all around the wings, therefore some of the posterior basal cells are open. Abdomen. The abdomen consists of five segments in the male and six in the female. They taper gradually towards the tip, where are the large genital organs. Figs. 7-9, Plate [., show the structure of the abdominal plates around the ovipositor. CLASSIFICATION. The classification of the Jassidz has undergone the usual amount of change and confusion and is still not satisfactorily settled; but most authorities agree in placing these insects in a series of quite well-defined groups. Primarily they arrange themselves naturally into two large groups or subfamilies. These subfamilies are characterized by the position of the ocelli. Not that these characters are necessarily of such fun- damental importance that we may establish such high groups upon them, but because they seem correlated with other char- acters harder to express but none the less evident and essential. We will therefore divide this family as follows: 14 Tllinois State Laboratory of Natural History. Ocelli situated upon the disk of the vertex. .....TETTIGONIN 2. Ocelli situated on the front or near the front margin of the end 02.5. AY Ree ee Oe ee eee J ASSINA. SUBFAMILY TETTIGONINA. Two very natural groups of genera can be distinguished as follows: Body broadly oval flat cies. Seeve. Sees Trine [. GyYpoNnrIna. Body more or less cylindrical ......... Tree II. Proconra. TRIBE I. PROCONINA S?raAt. GENUS 1. ONCOMETOPIA STAL. Proconia Am. and Serv., Hist. des Hemip., p. 571 (1843). Oncometopia Stal, Hemip. Fabr. Part II., p. 62 (1869). Somewhat cylindrical, with head and anterior parts of the thorax bent downwards at an angle of about 15°, or more. Head with prominent eyes extending laterally beyond the sides of the head. A faint groove behind each ocellus. Ocelli sit- uated on feeble nodules, farther from each other than from the eyes. Vertex not attaining the front margin. Front very convex, with the usual striations extending over the front mar- gin on to the top of the head. Genz projecting outwards and forwards beyond the margin of the head. Clypeus convex and not entirely separate from the front, extending beyond the margin of the side of the head. Lore rather small but distinct. Pronotum with its sides inflexed, surface irregularly wrinkled by transverse striations formed of coarse punctures. Scutellum triangular, with a depressed transverse line about the middle. Beneath, the coxe are very large and the mesothoracic.epi- sterna are large and flat. Elytra with the apical and anteapical cells remarkably uniform in size. The anterior sector is forked about the middle, and a third fork is given off towards the apex. A narrow apical membrane is present. Claval veins two, sometimes united by one or two cross-veins. First sector of the wing giving off a faint marginal fork, poste- rior fork connected with the anterior fork of the second sector Jasside of Illinois. 15 by across-vein. Posterior fork of the second sector likewise con- nected with the third simple sector. Fourth sector simple, the fifth forked, and the sixth small and simple. The marginal vein turns abruptly to the margin after attaining the posterior fork of the fifth sector. Abdomen with six segments in the female, seven in the male. Two very dissimilar species in our fauna belong to this genus; 0. undata Fabr., and O. costalis Fabr. The former is long and slender; the head and thorax are much deflexed; the elytra have rather large apical cells; and the claval veins are united with one or more cross-veins; while in the latter species the body is short and thick, with the head and thorax relatively but little deflexed, the apical cells in the elytra small, and the claval veins separate. These species are known in collections, and in most books, under the generic name Proconia, but Stal has shown (in Hemip. Fabr.) that Proconia Lep. & Serv. is not Proconia of Am. & Serv. He therefore uses Proconia as originally intended and divides Proconia Am. & Serv. into several genera, one of which is Oncometopia. O. undata Fabr. (PI. IL, Figs. 10-14.) Cicada undata Fabr. Ent. Syst. IV., p. 32, 23; Fabr. Syst. Rhyng. p. 62, 5.— Coqueb. Illust. 1, p. 32, tab. 8, fig. 3—Blanch. Hist. Nat. IIL., p. 192, 160. Cicada orbona Fabr. Ent. Syst. Sup., p.520, 25-6; Fabr. Syst. Rhyng. p. 72, 50. Tettigonia undata Germ. Mag. d’Ent. Tome IV., p. 61, 6.— Sign., Ann. Soc. Ent. Fr. Tome II., p. 486, 225, Pl. 17, fig. 5. Proconia undata Walk., List of Homop., p. 783, 3. Proconia nigricans Walk. sl Ge sps-'183,) 8; Proconia tenebrosa Walk., Taste of Hemip., p. 787, 16. Proconia plagiata Walk., List of Homop., p, 788, 17. Oncometopia undata Stal, Hemip. Fabr., Part II., p. 62. Cylindrical, slate-blue or gray above, head, scutellum, and the under side reddish yellow. Length 12 mm. Head. Above marked with somewhat irregular black lines in the following manner: a line along the hind margin next the thorax; one around the front edge of the head; a pair 16 Illinois State Laboratory of Natural History. of lines going backward from this frontal line and uniting, thus forming a pear-shaped cell, from the back edge of which two pairs of lines radiate; an elbowed line to the eyes; and another meeting the front margin at the fore end of the gene, forming an oval cell. There is often an additional line dividing — this cell in halves. The peculiarities of the sculpturing consist in a shallow median longitudinal groove and a pair of shallower and wider ones extending from the ocelli to the hind margin. Beneath irregularly marked with black spots; a median lne from the middle of the front edge to the middle of the front; an additional line often present, from the middle of the side of the front edge, parallel with the median line. Generally a faint line on the suture between the clypeus and the front. The lower margin of the eyes is distinctly concave. Thorax. Pronotum slaty blue or gray, anterior margin reddish yellow, more or less distinctly separated from the darker parts by a sinuous black line; punctures dark or black; base darker. Scutellum bright reddish yellow marked with black as follows: a transverse line on the depressed portion; a pair of longitudinal lines from the outer ends of this to the anterior margin; a short transverse line connecting the middle of these; and, lastly, a still shorter median line connecting the middle of the transverse lines. Besides this the front median area is irregularly spotted with black. Beneath, the thorax is marked with irregular dots and patches of black, variable in form, number, and position, so that all that can be said is that the pleurites of the mesothorax and metathorax are generally darkest. The coxal cavities are large. The elytra are slate- blue or gray with the tips hyaline, the apical cells quite large, and the claval veins connected by one or more transverse veins. The wings are smoky or hyaline. Abdomen. The abdomen is reddish yellow, all but the lateral edges of the first five dorsal segments and the bases of the sternal pieces, which are black. Not a very common insect, but may be found at almost any time in all parts of the State. It lives on the grape vine and is said to become so numerous sometimes as to be very injurious. Jasside of Illinois. 17 O. costalis Fabr. Cercopis costalis Fabr., Syst. Rhyng., p. 96, 44. Cercopis lateralis Fabr., Ent. Syst. Sup., p. 524, 24-5.—-Coqueb., Illust. 1, p. 35, tab. 9, fig. 3. Cercopis marginella. Fabr., Syst. Rhyng., p 96, 44. Tettigonia lugens Walk., List Homop., p. 775, 108. Tettigonia pyrrhotelus Walk., 1. c., p. 775, 109. Tettigonia costalis Sign., Ann. Ent. Soc. Fr. Tome IT. (1854), 359, 210. Black marked with fine yellow spots and two longitudinal red lines on each elytron. Length 7 mm. Head. Above evenly marked with avery great number of very small yellow spots. The head is much smoother than in the previous species, there being no indication of a median groove and scarcely, any behind the ocelli, which are nearer the hind margin than in that species, the yellow spots along the front margin forming a quite distinct line. Beneath, the sur- face has likewise the yellow spots, those on the front generally following the striations. Those on the cheeks are fewer and larger, and there are only two or three on the clypeus. Thorax. Pronotum with the sides less inflexed than in O. undata, black, spotted with yellow like the head. Scutellum black, marked with yellowish lines, four on the anterior portion, one pair of which'is longitudinal, and the other oblique, lying on the edges of the scutellum. The posterior portion has three lines, an oblique one on either margin and a single longitudinal median one. Sometimes a transverse line is also present on the groove separating the two portions. Beneath, the pleurites have a prominent yellow stripe extending backwards from the posterior corner of the eyes. Below these, several irregular yel- low spots are found, larger than those marking the dorsum. Legs black, with the rows of spines on the femur and tibiz yel- low. Elytra black, marked with two broad red bands, one on the costa and one on the sutural edge of the clavum. The cells which are not covered by the red bands are generally mar- gined with yellow. The apical cells are small and the claval veins distinct. Wings as in O. undata. Abdomen. Above black, margined on each side with a broad yellow stripe, the continuation of the stripes on the thorax. 18 Illinois State Laboratory of Natural History. Beneath black, marked, as the head and thorax above, with fine yellow spots. This species is not so widely and commonly distributed as the preceding, but often occurs in considerable numbers. GENUS 2. AULAOIZES Am. & Szrv. Aulacizes Am. & Sery., Hemip. p. 571 (1843). Size and general appearance of Oncometopia. Head with less prominent eyes, hardly wider than the thorax; ocelli situ- ated on a nodule which springs from a cavity on the vertex, nearer the eyes than to each other. Vertex flat, having, in ad- dition to the broad shallow pits in which the ocellar nodules rest, three deep, broad sulcations, one larger and median, and the other two situated one on either side between the eye and the ocellus. The front is but little reflexed over the front margin on to the top of the head. It is very convex below. The clypeus is slightly convex. The gule extend forwards and outwards, being slightly arched and somewhat enlarged at the tip. The basal joints of the antenne are also peculiarly enlarged at the tip. Pronotum with its sides inflexed, surface irregularly wrinkled by trans- verse striations formed of coarse punctures. Scutellum smal- ler than usual, transversely striate, and not so distinctly sepa- rated into an anterior and posterior portion. Behind, it is pro- longed into a spinous process. Beneath, the cox are very large, and the mesothoracic episterna are large and flat. The venation of the elytra is very variable. The figure shows one form. The cells are irregular both in size and position. There are two cells in the clavum. The wings are much more con- stant. The first sector gives off a marginal fork, and a cross-vein connects the posterior fork of the first sector with the anterior fork of the second. The second sector forks so near the tip _ that the cross-vein connecting its posterior fork to the third simple sector is extremely long. Fourth and fifth sectors forked. Marginal vein not attaining the margin till near the sixth simple sector. Abdomen with six segments in the fe- male, seven in the male. A single species represents this genus in our fauna. Jasside of Illinois. 19 A.irrorata Fabr. (PI. IL., Figs. 15-18.) Cicada irrorata Fabr., Ent. Syst., IV., p. 33, 24; Fabr., Syst. Rhyng. p. 62, 6.— Coqueb., Illust. 1, p. 32, tab. 8, fig. 3.— Blanch. Hist. Nat. III., p. 192, 17. Tettigonia rufiventris Walk., List Homop., p. 796, 12. Tettigonia irrorata Sign., sear Soc. Ent. Fr., Tome III. (1852), p. 59, 276. Size and general appearance of Oncometopia wundata. Color yellowish brown to black, sprinkled with yellowish white. Length 12 mm. Head. Above nearly black, mottled with yellowish white and tinged in places with rose-red. End of gula, above, rosy. Eyes gray, ocelli brown. Beneath, face yellowish marked with red lines in the furrows, and with black irregular projections on the upper and lower edges. From the latter a conspicuous blunt hook-like line extends on each side, and anterior to these lines are eight small symmetrically arranged spots. Clypeus black above, with yellow on the sides. The cheeks are dusky yellow, hairy, with some black near the clypeus. Lore small, as in Oncome- topia, color black. Thorax. Pronotum nearly black, with yellow spots wuch finer and thicker than those on the head, the deflexed side-margins, however, with fewer and coarser spots. Scutel- lum small, triangular, basal portion black, middle portion yel- low, and extreme tip brown, shading into black on the terminal spine. Beneath yellow, dusky towards the middle, marked with a few black spots. Femur light yellow, basal end black, and apical third brownish yellow; tibize and tarsi dark yellow tipped with black. Not so spiny as Oncometopia. Elytra reddish brown irrorate with minute yellow spots, tip hardly hyaline, marginal membrane distinct, venation variable. Wings transparent. Abdomen. Red above, yellowish beneath, with a broad median and a narrower sutural black line. Female ovipositor black with the sheaths red. The male differs in the still wider median black genital armature. This fine species is not an uncommon insect, and though easily mistaken for Oncometopia at a first glance is easily distinguishable. 20 Illinois State Laboratory of Natural History. GENUS 3. TETTIGONIA (GEOFFR. Tettigonia Geoffr., Hist. des Ins. I., p. 429. Body elongate, slender. Head rounded or triangular in front, not wider than the thorax, above generally flat, vertex — not reaching the front margin. Front large, convex, striate as usual, the portion reflexed over the front edge only slightly, and sometimes not at all, striate. Clypeus large, generally convex. Ocelli nearer the eyes than to each other. Genz large, deflexed, tips projecting donwards, and not forwards and outwards as in the preceding genera. Pronotum hexagonal, with the scutellar angles often very obtuse and the outer side much rounded, deflexed at the sides. Scutellum triangular, divided by the usual transverse groove; surface quite smooth. Beneath, the coxze are very large and the mesothoracic epi- sternum is large and flat. Legs with the tibiz long, prismatic, and spinulose. Elytra with four different types of venation, with a small marginal membrane. Wings with the second sector having the two branches connected with the first and third simple sectors by short cross-yeins. Fourth sector forked and fifth simple. Marginal vein apparently attaining the mar- gin immediately after joining the posterior fork of the fourth sector. This genus is one of large extent, possessing members both common and variable. Indeed it may be considered one of the dominant groups of insects. Many of our species belong to the genus Diedrocephala, but the characters which separate it from Tettigonia are not of generic importance, as Kuropean authors now agree. Nevertheless differences enough do exist to divide it into a number of well-marked subgenera and sections. One of the most striking of these is represented by a sin- gle species, 7". tripunctata Fitch. The peculiarity of this species consists in the short vertex, the remarkably long front and clypeus, the absence of the anteapical cells in the elytra, and also in the forking of the first sector near the base, so that it appears like an additional sector. The second section is represented by 7’. bifida of Say, and is characterized by its very short, rounded vertex, the absence Jasside of Illinois. 21 of anteapical cells in the elytra, and the almost basal forking of the first sector. The remaining species group themselves into the two sub- genera Diedrocephala and Tettigonia as limited by Signoret, which are distinguishable by the more rounded vertex and front margin of Tettigonia and the more or less conical head of Diedrocephala. To Tettigonia belong 7’. similis, n. sp., T. hie- roglyphica Say, and two varieties of the latter; and to Diedro- cephala, 7’. versuta Say, T’. coccinea Forst., T. mollipes Say, and T. noveboracensisF itch. The relation of these species is well shown in the following diagram: versuta. coccinea. mollipes. 4 noveboracensis, . rea] 4 similis. 2 Q hieroglyphica. fe) Za var. a. > ~ yar. b. bifida. tripunctata. The following synopsis will serve to distinguish our species: TETTIGONIA. Face not greatly elongate. Elytra with anteapical cells. Head more or less flat above, with the front margin distinct. Subgenus I. But one row of anteapical cells in elytra. Sect. I. Vertex with two longitudinal black lines. ine Caen ace hg aoc T. VERSUTA SAY. Vertex not lineate........ T. cocorngEa Say. Several rews of anteapical cells. Sect. IT. Head long, with no black spots near the tip. Deca MMAR et evaeLels oY T. MOLLIPES Say. Head shorter, with a pair of black spots near the tip. +... T’. NOVEBORACENSIS Frtou. Head rounded at tip, with no distinct front margin. 22 Illinois State Laboratory of Natural History. Subgenus II. Seutellum with a median black portion. SUR ELE SAO CA aS T. SIMILIS, n. sp. Scutellum with median portion red. or yellow. - Color reddish...T. HIFROGLYPHICA Say. Color slate-green .............. var. 4, Colornearly black... 2%... eee var. f. Elytra without anteapical cells. Subgenus III. RES Ts es ad I Se oe T. Brrmpa Say. Face greatly elongated, Subgenus IV. {eee ee T. TRIPUNCTATA FircH. SUBGENUS I. Head conical, front margin distinct. (General color green. Section [. Elytra with a row of apicai and one of anteapical cells. T. versuta Say. Tettigonia versuta Say, Phila. Acad. Nat. Sci., Vol. 16, p. 311. Green lineate with red. Head above with black-bordered marginal and light yellowish green median lines. Length 8 mm. Head. Above reddish, marked with yellowish green, and with narrow black lines as follows: narrow a black line on the posterior margin and a larger one on the front edge; one on either side of the narrow longitudinal median light stripe; one margining the lateral light stripes; and, lastly, one transverse to this stripe, opposite the gene. The lateral light stripe sends a small lobe inwards towards the ocelli. Beneath yellowish green without markings, except faint dark lines on some of the stria- tions of the front. Thorax. Pronotum bluish green, with a large median spot and a lateral line on each side, red, and with the extreme lateral and front edge lighter green. Scutellum orange, with the anterior and posterior extremities yellow, marked with “five parallel black longitudinal lines on the anterior portion, the three inner of which are connected by a transverse line on the Jasside of Illinois. 23 median impression. From this two lines extend back over the posterior portion. Beneath unicolorous yellowish green. Legs yellowish green with spurs at tip of tibiew, and tarsal joints brown or black. Elytra dark bluish green with two broad red stripes separated by a blue line; tips and the costa near the tip, spotted brown. Wings dusky brown, veins deep brown. Abdomen. Beneath yellowish green. Not rare in southern [llinois in the middle and latter part of the summer. T. coccinea Forst. Cicada coccinea Forst., Nov. Species Insect., p. 96. Tettigonia 4- vittata Say, Journ. Acad. Phila., Vol. VI., p. 312, 3. Proconia 4- vittata Fitch, Cat. Ins. N. Y. State Cabinet, p. 55. Diedrocephala coccinea Uhler, List Hemip. West of Miss. R., p. 91. Green lineate with red. Head with black anterior border, but unmarked above. Length 10 mm. Head. Above orange, eyes green, front margin promi- nently marked with a black band. The usual narrow black line running inwards from the gene is present. Beneath uni- form yellowish green, lateral edges of eyes dark. Thorax. Pronotum green, marked with a transverse red line near the front margin, from which project backwards and outwards a pair of heavier curved lines. A yellow scar on the anterior corners. Scutellum deep orange, apical spines lighter. Beneath green, pleurites margined with a deep black stripe above, which is the continuation of that on the margin of the head. Legs yellowish, spurs on tips of tibe, and tarsal joints, brown. Elytra bluish green, with two longitudinal stripes red, the outer one being the wider and having a green central por- tion; tips black. Wings nearly black. Abdomen red above, yellowish green beneath. Common throughout the State. It has the same general appearance as 7’. versuta but is quite distinct. « 24 Illinois State Laboratory of Natural History. Srction_ Il. Elytra with several rows%of irregular cells at the tip. T. mollipes Say. (PI. IIL, Figs. 19-23.) Tettigonia mollipes Say, Journ. Acad. Phila., Vol. VI., p. 312, 4. Aulacizes mollipes Fitch, Cat. Ins. N. Y. State Cabinet, p. 56. Diedrocephala mollipes Uhler, List Hemip. West of Miss. R., p. 92. Bright green, head acutely conical. Length 12 mm. Head. Above light yellowish’ green, marked with very narrow black lines: one line in a median shallow groove; a double-curved one on either side, extending from behind the ocelli inwards and forwards, nearly touching the median line; another on either side in the broad conspicuous groove sepa- rating the vertex from the reflexed portion of the front; and, finally, the usual bent one, extending inwards from the gena. Below, the face is brown, darkest near the upper and lateral margins. The striations of the front are darker, and the dark lines thus formed extend back on the cheeks. Thorax. Pronotum green, anterior and lateral margins concolorous with the head. Scutellum light green, transverse impression small, a white median longitudinal line being gen- erally present. Beneath brownish green, the lateral edges of the pleurites with a black line which is the continuation of the darkened border of the head. Legs greenish, with spurs on fem- ora, tibiew, and tarsi brown or black. Elytra green unicolor- ous. Wings hyaline. Abdomen. Above black; sides yellow; beneath green. Our most common species, and widely distributed. The females differ greatly from the males in the length of the head. T. noveboracensis Fitch. Aulacizes noveboracensis Fitch, Cat. Ins. N. Y. State Cabinet, p. 56. (zreen; form, size, and general appearance of TJ. mollipes, but with four,conspicuous black spots on the front margin. Length{12'mm. Headjshorter than’in T. mollipes. Above yellowish green, marked with black as follows: a large_black’spot’on‘,the front margin on either side of the tip; another on the? gene above, Jasside of Illinois. 25 just before the eyes; the usual line from the anterior edge of the gene, which, however, is soon bent forward, proceeding along the junction of the reflexed portion and the front; and, lastly, a smaller line parallel with the latter on the vertex. Be- neath, the face is yellowish green, and the lower and anterior margins of the genx are black. Thorax. Pronotum green, anterior and lateral margins concolorous with the head, a median line white. Scutellum light green, transverse impression small, with a white median longitudinal line. Beneath, yellowish green, sometimes with a few black spots on the pleurites. Legs yellow, with terminal spurs of tibiz and tarsal joimts brown. Elytra unicolorous green. Wings hyaline. Abdomen. Above black; sides yellow; beneath green. Rather rare. From northern Illinois. SUBGENUS II. Vertex and frontal margin rounded. Markings on the ver- tex complex. T. similis, n. sp. Color light yellow, marked all over with fine brown lines and dots. Length 7 mm. Head. Above yellow, tinted with rosy, and marked with brown lines as follows: beginning at the base of the head, two parallel lines, close together, extend about half way to the front edge, then, making a regular curve, they pass backward and around the ocelli, making two or three angular bends, and then proceed directly forwards till they touch another pair of black lines bordering the large striated portion of the reflexed front. Eyes black at the ends. Tip of the front margin with a single round median black spot. Beneath reddish yellow, with brown lines on the striz of the front. Cheeks with two reddish stripes extending from the ends of the eyes to the clypeus. Thorax. Pronotum irregularly spotted with brown, ex- cept four broad bands of lighter,— one pair almost on the mid- dle of the dorsum, and one pair lateral. Scutellum brownish, with three triangular black patches on the base, the middle one 26 Illinois State Laboratory of Natural History. of which extends to the transverse furrow which is marked with a narrow black line; from this two lines extend towards the tip. Beneath reddish yellow, with a narrow brown line laterally. Legs yellowish, terminal spurs on tibiew and tarsal joints brown. LElytra light yellow, finely marked with longitud- inal brown lines. Wings brown. Abdomen. Above black, with white lateral margins; be- neath yellowish green. Rare. Described from one specimen, taken at Blooming- ton in May, 1884. Quite similar in general structure to the” succeeding species, but the simple sharply defined markings on the vertex, etc., seem to indicate true specific differences. T. hieroglyphica Say. (Pl. IIL, Figs. 24-26.) Tettigonia hieroglyphicu Say, Journ. Acad. Phila., Vol. VI., p. 313, 6. Color variable, generally reddish, sometimes slaty green, or even black, in varieties. Head and thorax with hieroglyphical black markings. Length 8 mm. Head. Above reddish, with variable black markings. These markings consist of a curved spot on the middle and base of the vertex, one between the ocelli and the eyes, one on the margin of the reflexed front, and a large median one on the tip of the vertex. These spots are variously connected by narrow lines, and other smaller spots may be present. Be- neath, with light spots on the middle of the front and adjoin- ing parts of the cheeks. Front generally marked with a black line around the striated part, striations brown or black. Cly- . peus with a large black median spot. Thorax. Pronotum reddish, with numerous small black and white spots irregularly arranged. Scutellum variably marked, a broad central jongitudinal band generally lighter. Black triangular spots about the middle of the sides of the base. Often a median black line present. ‘Transverse striation black. Beneath, reddish spotted with yellow, and with two black spots laterally. Legs yellowish, terminal spurs on tibiz and tarsal joints brown. LElytra reddish, often margined with white; sometimes also with many short longitudinal light lines. Jasside of Illinois. 27 Abdomen. Above black, with white lateral . margins; beneath yellowish green. A very common and extremely variable species. The two following varieties are very noticeable: Var. 2. This variety differs from T’. hieroglyphica, in being almost entirely slaty green, though possessing the same _ black markings. The median band of the scutellum is a beautiful bright yellow. The elytra have five black longitudinal lines. Body yellowish green beneath. Var: Bp: This variety is deep black in color, apparently due to the blendings of the black lines in var. «.; the specimens show a tendency to an obliteration of the slate-green markings and may become entirely black. The most persistent lines, which may indicate something of the original marking of the group, are a yellow line before the eyes, one on the cheeks nearest the base of the clypeus, and one just beneath the antenne. The median band on the scutellum seems to become even brighter. There are also lines on the claval sutures of the elytra. These remarkable varieties would probably have been ranked as distinct species if connecting links were not often taken. SUBGENUS III. Head very short, elytra apparently with an additional sector and no anteapical cells. T. bifida Say. Tettigonia bifida Say, Journ. Acad. Phila., Vol. VI., p. 313, 5. Green; head and thorax transversely, and elytra longitud- inally, lineate with black. Length 6 mm. Head. Above yellow, with a broad black band in which are situated the ocelli, and a conspicuous black tip. Eyes brown. Beneath black, with two small yellow spots, one on either side of the tip of the front margin. Sides of the front and tip of the clypeus, brown. The gule are margined with yellow, and the antenne are yellow. 28 Illinois State Laboratory of Natural History. Thorax. Pronotum with the central part green, and, at the anterior and posterior margins, a double band of black and yellow,— the black being in front of the yellow. Scutellum small, black, margined with white. Beneath black, except the narrow pleurites of the prothorax, which are yellow. Legs yellowish, terminal spurs on tibize and tarsal jomts brown. Klytra green, veins black or brown. Wings subhyaline, veins brown. Abdomen black, anal segments yellow. This is a very beautiful and quite common insect. It seems to differ so much from all others of the genus that a subgenus must be made for it. It is well distributed over the State. SUBGENUS IV. Head above, short, face very much elongate. Elytra with- out anteapical cells. T. tripunctata Fitch. (Pl. III, Fig. 27.) T. tripunctata, Fitch. Cat. Ins. N. Y. State Cab., p. 53. Pale brownish yellow, lineate with brown. Head with three black spots above. Length 5 mm. Head. Above light brownish yellow, with a large black spot around both ocelli and one on the apex of the front mar- gin; the striations of the reflexed portion are brown. Eyes marked with a brown spot. Beneath light brownish yellow, with a pair of brown lines on each side of the front, bounding the striated portion and converging till they meet on the cly- peus. The cheeks are ornamented with two broad brown stripes. Thorax. Pronotum light brownish yellow, with two transverse brown lines. Scutellum small, yellowish, with a central pale brown spot. Beneath yellowish, side pieces often bordered with lighter. Legs yellowish, terminal spurs on the tibiz and tarsal joints brown. Elytra brownish yellow, veins black or brown. Wings subhyaline, veins brown. Abdomen beneath, yellowish. Rare in southern [linois. Jasside of Illinois. 29 TRIBE II. GYPONINA. GENUS IV. GYPONA. Gypona Germ., Mag. d’Ent. Tome [V., p. 73. Oval, flattened insects, about one cm. long by two or three mm. wide; generally green. Head about twice as wide as long; anterior margin strongly, and the posterior but slightly, curved. Eyes, as seen from above, large, triangular, situated on the outer corners. Ocelli on the vertex, often on short tubercles. Vertex often longi- tudinally furrowed. Thorax about two and a half times as wide as long; the anterior and posterior edges about equally curved; lateral edges composed of two nearly straight portions, united at about one third from base in an obtuse angle,— the outer angle. The sculpturing consists of a series of nearly parallel transverse striations, sometimes interrupted anteriorly by a large sear. Scutellum triangular, the top-shaped tip gen- erally marked off by a distinct suture. The whole scutellum is sculptured like the thorax, even to the large lateral anterior scars. Elytra with two veins on the clavum, the radial vein forked and the apical and anteapical cells variable according to the species. Wings hyaline. Abdomen with six segments in the male and five in the female. Beneath, the legs close together, increasing in size from before backwards. I have seen five species of this genus from Illinios, four new. 'I'wo others have been described from this State; one by Uhler, the description of which I append, and the other by Sahlberg, which I have not seen. The following table will serve to distinguish‘the five species that I know: Not red above. Elytra white or light yellow. Head and thorax light yellowish. Thorax 8-lineate with red ........ G. 8-LINEATA. Thorax bipunctate with black. .G@. srpuNcTULATA. Head and thorax black... .:.....66..0e0000- G. NIGRA. 30 Illinois State Laboratory of Natural History. Elytra black, except the outer edge, which is whitish. Sat Paty os RCRA eee ele G. ALBIMARGINATA. Reddish all over'the ‘back.¢onkeeee bs ce oot G. BIMACULATA. The insects of this genus are remarkably uniform, but the species are distinctly marked. G. 8-lineata Say. G. 8-lineata Say. Jour. Acad. Phila., Vol. 1V., p. 340. Green, with eight red or yellow lines on the thorax, which continue on the head and scutellum. EHlytra with yellowish veins. Length 10 mm. Head. Above green, with the continuation of the red- dish lines as follows: a middle pair, close to the median furrow, continuing nearly to the apex; the next pair represented only by small yellowish spots; while the third follows along the edge of the eye and the anterior margin of the head, the outer pair not being present. Beneath, the color is lighter than above, unicolorous, the front and clypeus not separated by a distinct suture. Thorax. Pronotum very narrowly margined, disk finely striate, and with eight equal parallel reddish lines. Scutellum green, anterior portion with six reddish lines continued from the thorax, terminal portion transversely striate. Beneath, and legs, light green. Elytra uniform green, apical and anteapical cells irregular, numerous. Abdomen unicolorous green. The most common species of this genus. G. bipunctulata = n. sp. Green, unmarked, except by a black spot near the anterior edge of the prothorax on either side. Length 10 mm. Head shorter, and with slightly blunter anterior margin than in G. 8-lineata. Transverse striations visible on the front, and the lore distinet. Thorax with the pronotum faintly transversely striate, with the usual sears, and also bipunctate with black. Scutel- Jasside of Illinois. | 31 lum with the usual scars and striations behind. Legs and under surface lighter. Elytra with five apical and four anteapical cells. Wings hyaline. Abdomen unicolorous green. Not so common as the preceding species. G. nigra, n. sp. Black above; margin of the thorax and the elytra yellow- ish green; beneath green. Length 9 mm. Head. Above without median groove, the surface irreg- ularly striated, the striz extending obliquely forward; color black; eyes, a narrow margin near them, a line extending for- wards and inwards from the ocelli, and a spot near the posterior margin of the head, behind them, yellowish green. Beneath green. Thorax. Pronotum black, with the lateral margins, and sometimes a spot on the anterior edge, green. Beside the usual lateral scar, there is a smaller additional one just behind it. Only the posterior portion of the disk striate. Scutellum black, with the corners yellowish green. Legs and under surface lighter. Elytra with five apical and four anteapical cells, color light yellowish green, semi-transparent. Abdomen black above and green below. G. albimarginata, n. sp. Seutellum and elytra black; head, thorax, and edge of elytra greenish yellow. Beneath greenish marked with black. Length 10 mm. Head. Above, with a scar on either side near the base; color pale greenish yellow with the median groove and scars brown. Beneath yellowish green, with brown patches in the prominent frontal striations and on the gene. Thorax. Pronotum pale yellowish green, with the pos- terior border brown. Scars four, as in G. nigra. Only the posterior half of the disk striate. Scutellum black, with two brownish spots on either side near the front margin, and also, sometimes, a broad, shallow median groove, brown. Posterior 32 Illinois State Laboratory of Natural History. part brown, with lateral edges yellowish white. Elytra black, outer margin with a very broad, and the inner margin with a very narrow, edge of light greenish yellow. Veins near the tip margined with brown. ; Abdomen. Beneath¥yellowish, marked with dark brown or black; lateral pieces with a curved dash of brown, and the median pieces with the basal half or two thirds, black or brown. G. bimaculata, n. sp. Rosaceous, head and anterior portion of the thorax green- ish. Eyes, ocelli, and a small discal spot on elytra black. Length 10 mm. Head shorter than usual. Above, with the median groove represented by a black line, eyes and ocelli deep black, conspic- uous. Beneath paler green; the upper edge of the gene acute, black; antenne black. Thorax. Pronotum reddish, anterior part green and not striate. Scutellum finely and irregularly striate, reddish; pos- terior portion marked off by a narrow brown line and a coarsely granulated brown patch on either side, near the anterior cor- ners. Elytra rosaceous, with asmall conspicuous black spot near the middle. Wings brown, veins black. Abdomen, beneath, green. A beautiful species, also rare. G. cinerea Uhler. G. cinerea Ubler, Bull. U. 8. Geol. Surv., Vol. III., p. 460. I have not seen this species, but as it was described from Illinois I copy the original description: “Aspect of Philenus, short, dark cinereous, more or less tinged with yellow. Head long-semilunate, angular at tip, and with the tip recurved, black; vertex flat, coarsely punctate with black, a little pubescent, impressed behind the apex gen- erally with a short, impressed, longitudinal line, and each side with a longer one, or with simply indentations in their places; face irregularly dotted with piceous, and with a few punctures on the sides, the front convex transversely, more prominent above, triangularly impressed at base, sometimes with traces Jasside. of Illinois. 33 of transverse brown lines; cheeks broad, the outer ones oblique, a little expanded, and broadly rounded, very slenderly tapering on the apical half. Antenne largely piceous, or banded with piceous. Pronotum transversely rugulose, pointed with fus- cous, a little punctate anteriorly and near the sides, a trans- verse series of short, indented lines behind the forward margin, and with a bald patch in the place of callosities; lateral margins oblique, slanting beneath the middle of the eyes, the edge nar- rowly recurved; propleure dotted with fuscous, the meso- and meta-pleure pale, a little tinged with piceous on the disks. Legs pale brownish, or dull testaceous, dotted with fuscous; the coxe clouded with fuscous, and the femora and tibiz more or less piceous on the upper face, and the latter sometimes also on the under face; tarsal joints either black beneath or at the apex or with the last joint; nails and pulvilli piceous. Scutellum short, acute, minutely rugulose and punctate at base and in patches, minutely dotted with fuscous at remote, unequal in- tervals. Hemelytra very broad, and with the costal margin more arcuated in the female than in the male, and with the cells shorter and more irregular; the nervules thick, prominent, mar- gined each side, throughout, with fuscous, impressed punc- tures; the costal edge thickened, a little recurved, the submar- gin punctate with fuscous; apical cells longer and less oblique- sided in the female than in the male. Tergum more or less black, and the venter black basally, or with the disks only of the segments before the apex black, or with all the segments simply punctate with fuscous. The surface is generally in- vested with minute, prostrate, yellowish pubescence.” Length to tip of hemelytra, 7-9 mm. Width of prono- tum, 2.5-3'mm. EXPLANATION OF PLATES. Sx PLATE I. Fig. 1.—Face of Allygus irroratus Say. Fig. 2.—Face of Agallia siccifolia Uhler. Fig. 3.—Vertex of same. Fig. 4.—Antenna of Oncometopia undata Fabr. Fig. 5.—Thorax of Tettigonia mollipes Say; ventral view. Fig. 6.—Legs of Oncometopia undata. Fig. 7.—Female generative organs of Oncometopia undata; ven- tral view. Fig. 8.—The same; dorsal view. Fig. 9.—The same; lateral view. PLATE II. Fig. 10.—Head of Oncometopia undata ; dorsal view. Fig. 11.—The same; lateral view. Fig. 12.—The same; ventral view. Fig. 13.—Elytra of Oncometopia undata. Fig. 14.--Wing of same. Fig. 15.—Head of Aulacizes irrorata Fabr.; lateral view. Fig. 16.—The same; ventral view. Fig. 17.—Elytra of Aulacizes irrorata. Fig. 18.—Wing of same. PLATE III. Fig. 19.—Head and thorax of Tettigonia mollipes Say (female) ; dorsal view. Fig. 20.—Head of Tettigonia mollipes (male) ; ventral view. Fig. 21.—The same ; lateral view. : Fig. 22.—Elytra of Tettigonia mollipes. Fig. 23.—Wing oi same. Fig. 24.—Head and thorax of Tettigonia hieroglyphica Say ; dorsal view. Fig. 25.—Head of same; lateral view. Fig. 26.—Head of same; ventral view. Fig. 27.—Elytra of Tettigonia tripunctata Fitch. “These figures are all original camera lucida drawings made by the author. a9 SRY : ie, : x ‘ NIN PLATE I PLATE II. Fic. 17. Fig. 18. PLATE III. , he , f iy ‘ ' - 7 f \ J rs ee utes Ks a4 a a 7 ‘ - ae : ‘ | ut ; 1 } J oe oye ¥, ? ia . i as 4 igs i hu ‘ t - \ i ‘ j ry ty H . i . ek, . Dy Ms iy ; : wen i i wae Articie III.—On the Parasites of the Lesser Apple Leaf- Roller, Teras minuta (Robs.). By CLrarence M. Weep. In a paper to be published in the Report of the State Ento- mologist of [llinois for 1886, I have discussed at length the literature and life-history of the Lesser Apple Leaf-Roller, originally described by Robinson as Tortrix minuta, and since re-described by Le Baron, Riley, Packard, and Zeller under the specific names of malivorana, cinderella, vacciniivorana and variolana. I have there shown that* the life-history of the species when feeding upon apple is the same as when feeding upon cranberry, Dr. Riley having proved that in the latter case the species is dimorphic, — there being a yellow summer form and a gray winter form. The parasites described below were mostly bred at the Laboratory during 1886, though a few had been obtained during previous seasons. It is a little re- markable that although this leaf-roller has been so often in- jurious both upon apple and cranberry, and has frequently been treated of in entomological literature, there has heretofore been recorded but one species of parasite bred from it, (obtained from cranberry-feeding larve). Yet from the frequently re- corded fluctuations in the numbers of the larve upon apple, it seems probable that they have been subject to parasitic attack for many years. . I desire to acknowledge my great obligations to Professor S. A. Ferbes, to whose liberal-minded policy of allowing his assistants personal credit for much of the work done by them, I am indebted for the opportunity of publishing the present paper; and to Dr. C. V. Riley, who has kindly determined the generic position of the species of Limneria, Cremastus, and Pimpla described below. 40 Illinois State Laboratory of Natural History. LIMNERIA ELEGANS, sp. n. Cocoon.—Length 6 mm. White, thin, sub-cylindrical. Imago, 2.—Length, 4.5 mm. Black, somewhat shining; mandibles straw-yellow, tipped with brown; palpi, white; four anterior legs rufous, with cox and trochanters whitish, and tips of tarsi dusky; posterior legs rufous, with coxe (except tips) and proximal portion of trochanters black, and tips of trochanters, together with apical portion of tarsi dusky; ven- trum of abdomen pale yellow anteriorly and darker posteriorly. Antenne a little more than half as long as body, piceous, ex- cept ventral surface of the two basal joints, which are yellow- ish. Tegule whitish. Wings with nervures and stigma dull yellowish brown, former pale at base, and latter with a pale spot on proximal portion; areola entirely wanting. Scutum and scutellum of metathorax finely aciculate. Scutellum of metathorax very finely granulate; carine only slightly devel- oped anteriorly, wanting posteriorly. First joint of abdomen smooth and shining, suddenly enlarging transversely about two thirds of the way back, the remaining segments having the appearance of being very finely squamulate. Ovipositor nearly half as long as abdomen. Described from two specimens. ‘The only other American species that has been described under the genus Limneria, hav- ing no areola, is L. rufipes Prov. (Nat. Can., Vol. VL, p. 149), from which the present species differs in the color of the stigma, ventral surface of the abdomen, anterior cox, etc. LIMNERIA TERATIS, sp. 0. Cocoon. — Length 7 mm. Thin, white, nearly cylindrical in form. Imago, ?. — Length, 6 mm.; alar expanse,8 mm. Black; mouth parts honey-yellow; first pair of legs pale rufous; second pair of same color, except tarsi, which are whitish tipped with dusky; coxee and upper part of trochanters of third pair of legs black, femora pale rufous tipped with dusky, tibize whitish at base, then an imperfect dusky ring, then whitish again, and Apple-Leaf Roller. 4] tipped with a broad dusky ring, tarsi dusky, with whitish rings at the articulations; ventral surface of abdomen dull brown. Antenne piceous, setaceous, two thirds as long as_ body. Tegule whitish. Wings subhyaline; nervures and stigma brownish black, the former pale at base, and the latter with a pale spot near where it arises; areolet petiolated. Scutum of mesothorax somewhat shining, finely granulate, with shallow punctures, and a faintly impressed longitudinal area on each side of the dorso-meson; very sparsely pubescent. Scutellum of mesothorax granulate, pubescent. Scutellum of meta- thorax gramulate; carine prominent, so arranged as to en- close a sub-cireular area on anterior dorso-lateral surfaces, a central pentagonal longitudinal area, the surface of which is transversely striate, and on each side of which there are two sub-triangular areas, with reticulated surfaces. Abdomen shining, with sparse, fine pubescence; first segment subcylin-— drical, enlarged posteriorly. Ovipositor nearly as long as abdomen. ; Described from two specimens bred from Teras minuta in June. — Differs from L. annulipes Cresson in the larger ovipositor, and in the thoracic sculpture; and from L. fugitiva (Say) in its smaller size and black posterior coxe. PIMPLA MINUTA, sp. 0. Imago, é.—Length 5mm. _ Black; tarsi, ventral surface of first two antennal joints, tegulee and small spot just in front, first four legs (except tarsal claws of posterior pair and apical tarsal joint of middle pair), with trochanters of posterior legs, and ventrum of abdomen (except two dusky quadrangular spots on each segment), clear white. Posterior edges of middle abdominal terga whitish. Coxze and femora of posterior legs pale rufous, latter tipped with black; posterior tibiz white, with an imperfect dusky ring near base and a broad dusky ring at tip; first tarsal joint white tipped with black; second and third black, with white at base; the rest dusky throughout. Antenne two thirds as long as body, setaceous, nearly piceous, the first two joints white beneath, and the under surface of the third, 42 Illinois State Laboratory of Natural History. fourth, and fifth lighter than the rest. Wings hyaline; nerv- ures and stigma brownish black, paler at base; areolet moderate, sessile, sub-rhomboidal. Scutum and scutellum of mesothorax pubescent, shining, with numerous shallow punctures; scutum with two oblique impressed lines arising anteriorly on each side of the middle and meeting on the upper surface. Scutellum of the metathorax canaliculate. First joint of abdomen shining, with a prominent ridge arising anteriorly on each side of the middle and running obliquely back; between these ridges in front the segment is excavated and the sides are also somewhat hollowed out. Remaining segments punctate, pubescent. Described from one specimen bred from Teras minuta in June. This is a well-marked species, easily distinguished from those previously described. CREMASTUS FORBESI, sp. n. Cocoon. — Length 6 mm. Thin, whitish, sub-cylindrical. Image,?—Length 7 mm. Black; eye orbits, mouth parts, ventrum of abdomen, and two anterior pairs of legs, honey-yellow; posterior legs approaching a chestnut color, with tips of tibie dusky; tarsi dusky, especially at the tips; posterior margin of abdominal terga (except first) dusky yel- low. Antenne 5 mm. long, setaceous, ventral surface nearly tawny olive. Scutum of mesothorax punctate, with a faint impressed line starting a short distance each side of the middle of the anterior margin, and running slightly obliquely to the posterior margin, being united on the medio-dorsal portion of the scutum by a broad, flattened, thickly punctured area. Scu- tellum of mesothorax punctate, having (in the specimen at hand) an indistinct, transverse, chestnut-colored band. Meta- thorax strongly sculptured; a well-developed longitudinal carina on each side of the dorso-meson, arising near the an- terior margin, and running to posterior margin, the two being connected anteriorly by a transverse carina; on the outside of each of these runs another longitudinal carina, the latter being connected with the former by transverse carine, so as to en- close a quadrilateral area on the dorso-lateral angles of the Apple-Leaf Roller. 43 metathorax; another longitudinal carina on each side, below those last mentioned; a spot on the anterior margin each side of the dorso-meson shining, with scattered punctures; re- mainder of the dorsum transversely striate (between the carinz); sides punctate. Wings hyaline; tegule straw-yellow; stigma of moderate size, dusky yellowish brown; veins straw- yellow at base, becoming dusky outwards. First abdominal segment shining, long, slender, slightly enlarged posteriorly; remaining segments pubescent. Ovipositor as long as ab- domen. Described from one specimen bred from Teras minuta, 13th June, 1886. Dedicated to Professor S. A. Forbes. CLINOCENTRUS AMERICANUS, Sp. 0. Cocoon. — Length 3 mm.; width 1 mm. Whitish, thin, without loose silk; usually formed within the cocoon of the host. Imago. — Length, 4 1.7 mm.; 2 2-2.1 mm. ¢,¢. Reddish or yellowish brown, with a black head, dark brown or piceous antenne (except at the base), and more or less black on the dorsum of the thorax, especially at the margin, and the an- terior and posterior portions of the abdomen. Legs honey- yellow, with tips of tarsi dusky. Mandibles brownish, tipped with black; palpi whitish. Ovipositor whitish tipped with dusky. Antenne as long as body, basal joints testaceous. Wings subhyaline, tegulz and basal portion of veins testaceous; middle portion of costa dusky; stigma and remaining nervures dull brownish white. Mesoscutum with sparse pubescence, smooth, except for two impressed oblique lines which form a V-shaped marking, the base of the V being on the medio-pos- terior portion of the scutum, and the side of the V extending cephalo-laterad. Mesoscutellum smooth, sub-triangular. Scu- tellum of metathorax reticulate. Tergum of first abdominal segment with front slightly excavated; longitudinally rugose; terga of two following segments finely rugulose. Ovipositor exserted, nearly as long as abdomen. The male of this species is usually darker in color than the female and much more slender in form. 44 Illinois State Laboratory of Natural History. Described from many specimens bred from Teras minuta in June. I propose the above specific name for this species, because it is, I believe, the first insect of the genus to be described in - America. APANTELES cAcECI# Riley. As IT have elsewhere noted*, a single specimen of this species was bred from Teras minuta during May, 1886. MACROCENTRUS DELICATUS Cresson. Professor Riley has recordedt the breeding of this species from the second brood of larve of Teras feeding upon cran- berry in New Jersey. *Notes on some Illinois Microgasters. Bull. Ill. St. Lab. Nat. Hist. Vol: T1,, Art..4:, p:.d. +U. 8S. Dept. Agr., Div. Ent., Bull. 4, p. 25. h ww : i ‘ oe : \3 » ‘ Bick i My ae ’ ‘ 0) sm i Hb ae ie ti sbi Ake Articte [V.—On the Anatomy and Histology of a New Earth- worm (Diplocardia communis, gen. et sp. nov.). By H. GARMAN. CHARACTERS OF THE GENUS. Vasa deferentia opening to the exterior behind the cli- tellus by two apertures on the ventral side of somite 19. Two copulatory fossz extend from the middle of the ventral side of somite 18 to the middle of the ventral side of somite 20, each fossa with a pair of long, curved setz and an outlet of a pros- tate gland at its extremities. Internal apertures of the vasa deferentia two pairs; one pair in each of the somites 10 and 11. Seminal vesicles in somites 9, ?10, and ?11. Testes in somite 12. Spermathecz in three pairs, one pair in each of the somites 7, 8, and 9. Ovaries flabelliform, situated in somite 13. Internal apertures of oviducts in somite 13; external apertures in somite 14. Sete arranged in four double longitudinal series on the ventral side of the body, each somite bearing four pairs. (Hsophagus very short, without calciferous glands. A muscular gizzard in somites 6 and 7. ‘Typhlosole a very slight dorsal fold. Dorsal vessel double, consisting of two tubes fused only at the dissepiments. No subneural blood vessel present. Nephridia tubular; with the nephridiopores in line with the dorsal sete of the external pairs; internal aperture in the somite preceding that in which the gland lies. Brain small, transversely elongated, with slight median anterior and pos- terior excisions. Prestomium not completely dividing the in- tegument of the first somite. The genus is based upon a large cylindrical flesh-colored species which is common in the black soil of Illinois prairie- land. Its body is made up of from 123 to 165 somites, and reaches a length of a foot. The following account of its anatomy will furnish the means of distinguishing it from other species of the genus which may be discovered. 1 48 Illinois State Laboratory of Natural History. Tur Form AND EXTertor. The body is, for the greater part of its length, perfectly cylindrical in shape, there being none of the flattening of the - posterior ventral region observable in species of Lumbricus. It increases gradually in diameter from the preestomium to somite 7, where it is thickest, then gradually diminishes to somite 11, posterior to which the diameter remains constant (not consid- ering the clitellus) until a short distance from the posterior extremity, where it abruptly descends, the decrease being con- fined to about six very short terminal somites. A few of the first somites are shorter than those which follow, but the maximum of length for these divisions of the body is reached at about somite 7; behind this somite is a grad- ual decrease in their length, so that at the middle of the length of the body somites are only half as long as the longest, and at the posterior extremity they are less than a third of the length of anterior somites. Impressed encircling lines divide the sur- face of the integument into numerous small false segments, and render the limits of the somites difficult to distinguish un- til the disposition of these lines is known. Somite 1 is without encircling lines, and its surface is plicated longitudinally. Somite 2 shows the plication on its anterior half, and also lacks the lines. The surface of 3 is devoid of wrinkles,-but shows a single very faint encircling line. Somite 4 shows a distinct nearly median line and a faint anterior one. Somite 5, like most of those following, is encircled by two lines dividing its integument into three false segments, of which the median is smallest. Towards the posterior end of the body the lines dis- appear, about a dozen short terminal somites lacking them, and afew preceding these having a single one. The mouth is a transverse slit, bounded below and at the sides by a fleshy lip —the anterior edge of somite 1—and above by the prestomium. The latter is of the usual shape, has a perfectly smooth surface, and by its narrowed posterior portion reaches the middle of the dorsal wall of somite 1. Wrinkles sometimes continue its lateral boundaries and give it an appear- ance of completely dividing the integument of the first somite. The vent is terminal and vertical in position; the integument about it is faintly plicated. 7 _ Anatomy and Histology of a New Earthworm. 49 THE Set. Four double longitudinal rows of sete with distances be- tween adjacent rows nearly equal, are disposed along tle ventral face of the body. Each ordinary somite, therefore, bears eight sete in four pairs. In sections, the two inner pairs of setz are seen to be a little farther apart than each inner pair is from the outer pair of the same side. A line drawn through the middle of a somite at right angles to its vertical axis, would touch at its extremities the outermost seta of both outer pairs. The sete are thus confined to the ventral half of the body. Setz are lacking upon somite 1 and upon the three or four terminal posterior somites. They are of the usual form, but are rather slender. The distal extremity is bent a very little, and is ob- tusely pointed; the proximal end is bluntly rounded; the an- gulate swelling at the. proximate end of the distal third is inconspicuous. In place of the inner pairs of ordinary setz, on somites 18 and 20 are pairs of long uniformly curved copu- latory sete. On somite 19 the two inner pairs of setzx are lacking. Tue Dorsat Porzs. The first dorsal pore is situated between somites 10 and 11. These openings are elliptical in outline, and are transversely placed. They may be obliterated in alcoholic specimens by the contraction of surrounding tissues, but in worms killed in cor- rosive sublimate they can be readily studied. Tue CLITELLUS. The clitellus does not appear until the worms are nearly grown, when the somites which will eventually bear the glands assume a dull yellow color, but are not swollen beyond the common outline. In large examples collected during the month of May the clitellus is well developed. It is of a pale flesh color, projects beyond the common outline a little, and occupies the walls of somites 13 to 18 inclusive. Its surface often presents peculiar fissures, which appear as if made by passing the edge of a knife blade over it; the encircling rings 50 Illinois State Laboratory of Natural History. are obliterated on the gland-bearing somites. In some cases the gland is developed only on the posterior part of the wall of somite 13, and it is generally less developed on this somite than on those which succeed it. It is not developed over a narrow | median ventral area between the two inner rows of sete. The lateral edges of this area are sinuous, from ingrowths of the gland between each two pairs of setw. The area begins to widen towards the front on somite 14, and towards the rear on somite 17. Tue ExtTeRNAL APERTURES OF THE GENITAL ORGANS. The external apertures of the three pairs of spermathece show very clearly in examples killed in corrosive sublimate, at the anterior edges of somites 7, 8, and 9, opposite the inter- spaces between the setz of inner pairs on the same somites. The openings are upon minute transversely-placed prominences. The external apertures of the oviducts are two minute pores, very close together, within and a little in advance of the two inner pairs of setz on the ventral side of somite 14. In many examples the surrounding integument is a little ele- vated, producing a low transversely-elongated mound bearing the apertures at its summit. Two copulatory papille are usually present on the posterior edges of somites 17 and 20, one opposite each inner pair of setae of these somites. In most cases these are the only papille present; but in one example seen, there were besides the pair on somite 17, four pairs on somites 20, 21, 22, and 23, respectively. In still other examples a pair was found on each of somites 16, 17, 20, and 21. At about the middle of somite 18, at the points at which the pairs of copulatory set appear, are the anterior ends of two shallow copulatory fossz shaped like parentheses, but with the convex sides towards each other. These grooves extend across somite 19 and terminate on somite 20, where also copulatory sete appear. No apertures of sexual organs can, by ordinary means, be perceived in this region; but on cutting out the body- wall and studying it with a microscope, the aperture of the duct of a prostate gland will be found in the two extremities Anatomy and Histology of a New Earthworm. 51 of each fossa, one opening, thus, beside each pair of copulatory setz on somites 18 and 20. The vasa deferentia open on two very small papilla, one in each fossa near the middle of somite 19. The vasa are in no way connected with the prostate glands. Between the fosse the body-wall is a little impressed, and forms here a shallow basin. Tur DISSEPIMENTS. No dissepiments are present, apparently, between the four most anterior somites. The first developed partition separates somites 5 and 6. It is much thinner than the five succeeding ones. The latter are greatly thickened from the unusual de- velopment within them of muscle fibers. These six anterior dissepiments, and to some extent those immediately following, project backwards from the line of attachment to the body- wall, so that anterior septa are received into succeeding ones, and the part of the alimentary’ canal belonging in one somite may be carried back into another. Cross sections from this region are sometimes puzzling on account of this. Posteriorly the dissepiments grow thinner and more transparent from loss of their muscular character, and in the greater part of the body are reduced to delicate films. The aperture in each septum beneath the alimentary canal is circular in outline, and reaches from the ventral side of the canal to the body-wall. Through these apertures pass the ventral blood vessel and the ventral chain of nerve ganglia. Tue ALIMENTARY CANAL. The pharynx extends from the mouth to about the begin- ning of the fourth somite. It is of the usual character, con- sisting of a thin-walled sac with numerous bands of muscle extending from its outer surface backwards and outwards to the body-wall. When it is empty, its walls are extensively infolded, producing an irregular longitudinal plication of its inner surface. At the posterior end of the pharynx, the dorsal wall of the canal presents a narrow transverse inward fold. Behind the fold the caliber abruptly increases again with no change in the 52 Illinois State Laboratory of Natural History. character of the walls. This region of the canal is the only part that can be considered an cesophagus. The exterior is devoid of muscular bands and the walls are thin and dis- tensible. There is no trace of calciferous glands. The cso- — phagus, if such it can be termed, is ordinarily crowded into a very narrow space and on casual observation may escape notice as a division of the canal. It may be doubled over the next division. Within somites 6 and 7 the walls of the canal become greatly thickened by a development of circularly arranged muscle, and form a powerful grinding apparatus,— the gizzard. Exteriorly this region is noticeable from its pearly lustre and unyielding walls. It really consists of two divisions, belong- ing in somites 5 and 6, respectively, but the backward ex- tension of the septa brings the anterior part within 6 and the posterior part within 7. The line of attachment to its wall of the septum between 5 and 6 indicates the line of separation of the two divisions. This separation is narrow but complete, the wall of the intervening region being thin, and lacking the circular muscle fibers. Longitudinal sec- tions of the gizzard show each part to consist of a zone of muscle which is thickest at its middle, and diminishes in thick- ness, somewhat, anteriorly and posteriorly. The anterior divi- sion of the gizzard is the larger; both divisions decrease a trifle in diameter from before backwards. ; The first division of the intestine is the most slender por- tion of the alimentary canal. It is cylindrical, with smooth and rather firm walls, with a gradually increasing development of chloragogue cells from before backwards, the posterior third becoming dark brown in color from the abundance of these cells. It extends from the gizzard to somite 17, terminating after passing through the partition between 16 and 17. The epithelial lining of this division of the intestine is closely cor- rugated. Within the posterior part of somite 17 the canal at once expands, loses the chloragogue cells, and becomes thin-walled. This forms the beginning of a second division of the intestine, the largest in caliber of all, extending through somites 18 and 19 and terminating in somite 20, where begins the third divi- sion. Anatomy and Histology of a New Earthworm. 58 The third division of the intestine extends from somite’ 20 nearly to the posterior end of the body. It is similar to the preceding more inflated part, being thin-walled and sacculated, and is pretty uniform in diameter throughout. Towards the vent the canal again changes in character to form the rectum. LExteriorly there is little to distinguish this division from the intestine which precedes it, but cross sec- tions show a decided thickening of the wall, due to an increase of muscle tissue and to the great development of the lining epithelium. No intestinal cceca have been observed. The typhlosole might easily escape observation on casual study. It is represented by a low ridge projecting into the cavity of the intestine from the dorsal side and extending from somite 23 backwards. It begins to decrease in size behind somite 40, and soon becomes scarcely perceptible. THE VASCULAR SYSTEM. The vascular system of this genus differs from that of Lumbricus in being simpler,—the subneural vessel and the com- missural vessels putting the latter in communication with the dorsal vessel being here wanting. With certain of the post- clitellian group of genera, Diplocardia shows marks of closer relation with respect to these vessels. The dorsal vessel is distributed upon the pharynx in the usual manner. From the pharynx it extends backwards over the gizzard as a simple tube without branches until just before the dissepiment between somites 6 and 7, where very small lat- eral branches pass around the posterior part of the gizzard and enter the subintestinal vessel below. Immediately behind the dissepiment between somites 6 and 7, the dorsal vessel divides into two trunks, which again unite to pass through the dissepi- ment between somites 7 and 8. In somites 8 and 9 the same thing occurs, accompanied by an increase in the size of the dorsal vessel and its lateral branches. In somites 10, 11, and 12 the lateral branches become greatly enlarged, equaling in diameter the dorsal vessel in these somites. All these ‘‘ aorta” are loosely bound to the posterior septa of the somites in which 54 Illinois State Laboratory of Natural History, they lie, by very thin mesenteries. They are not closely bound to the intestine, as sometimes represented in figures of other earthworms, but give abundant space within for the disten- sion of the intestine with food, and are therefore not them-— selves liable to be disturbed by the operations of digestion. Posterior to somite 9, the divisions of the dorsal vessel are not widely separated as they are in somites 7, 8, and 9; but the double character persists, and cross sections show that there are two completely separate tubes, at least at the middle of the somites, throughout the remainder of the body. Possibly in some cases the tubes do not unite to pass through the septa, since the channel between them may reach the septum and seem to continue the division through it. The dorsal vessel reaches its maximum diameter in somite 14. Anterior to this somite the vessel gradually decreases in size; posterior to it the vessel is for some distance about equal in size to the anterior division of the intestine, which it overlies and con- ceals. In somites 14-19 there is a sudden increase in the size of the vessel. Posterior to somite 19 the vessel is a little smaller, and continues quite uniform in diameter (with a very gradual decrease in size) to its termination at the posterior end of the body. In somite 13 the walls of the vessel show a few chloragogue cells when examined with a hand lens. Anterior to this somite the vessel is devoid of this gland. Posterior to somite 13 the vessel is thickly coated with the cells. No free lateral branches are given off from the dorsal ves- sel in somite 18, but in all the somites following, two slender, contorted lateral branches pass off, one on each side, just before the posterior septum, and, like the aortz, are bound to the dis- sepiment by a. delicate mesentery. The pair in somite 14 reach the body-wall between the outer and inner pairs of sete, and without branches pass into the integument. Thosé in succeeding somites divide into several branches just before reaching the body-wall, some of which doubtless collect the blood from the segmental organs and other structures, but most of them seem to emerge from the integument. In living worms the branches in adjacent sumites may be seen to anas- tomose with each other and to ramify extensively in the body- wall. A vessel of unusual size collects blood from the clitellus Anatomy and Histology of a New Earthworm. 55 and joins the lateral vessel of each side in somite 18. .All these lateral branches are, like the posterior part of the dorsal vessel, thickly covered with the brown chloragogue cells up to the point at which they pass into the body-wall. They are highly elastic, and after being stretched forward to their full extent during systole of the portion of the dorsal vessel to which they are attached, at once become contorted, or partly coiled, when the dorsal vessel again relaxes. The relatively thick chloragogue coating renders them conspicuous objects, although the blood vessel proper is generally very small. From first to last they are free from the alimentary canal. The minute gastric branches reach the dorsal vessel a little before the middle of each somite. A close capillary net- work may be seen in the walls of the intestine, which in some of the anterior somites assumes the form of longitudinal sinuses. } | The subintestinal blood vessel is slung by a mesentery from the ventral median line of the alimentary canal, and lies above the ventral nerve chain, passing along the dorsal side of the apertures in the dissepiments. By the dissepiments it is at regular intervals held near the ventral median line of the body, but in the cavities of the somites lies free in wide loops which extend from side to side. A pair of branches is given off before each dissepiment. It is smaller than the dorsal vessel, consists of a single tube, is non-contractile, and is not coated with chloragogue cells. Tue GENITAL ORGANS. Three pairs of spermathece are present in Diplocardia. They occur in somites 7, 8, and 9, increasing a little in size from before, are pyriform in shape, with corrugated outer sur- face when not distended with spermatozoa, and each sends a rather thick duct through the body-wall, near the anterior sep- tum, opening, as has already been noted, opposite the inner pairs of sete. ach sac is provided with a small reniform cecum, closely attached to one side at the point at which the duct leaves the receptacle. They are rather large, sometimes extending up along the sides well towards the dorsal vessel. 56 Illinois State Laboratory of Natural History. The shape of the ccecum varies occasionally, and may be cut up into irregular lobes. Quite frequently the receptacles are carried through the aperture in the lower part of a septum, and appear in a somite to which they do not belong. ~ . Attached to the anterior face of the dissepiment, between somites 9 and 10, is a large, white, irregularly-lobed mass on each side of the alimentary canal,—the seminal vesicles. No lobes or ducts from these vesicles, passing through the septum, have been found, and no means of communication between the vesicles and the other male genital organs have been noted. It . is possible, however, that in some conditions of these organs such lobes or ducts may exist, or, possibly, such communication may be by means of pores through the dissepiment. In worms more than half grown somites 10 and 11 are always found loosely filled with spermatozoa. These loose masses may have an extremely delicate membranous covering and represent lobes of the seminal vesicles, but no trace of such membrane has been seen either in sections or by the ordinary means; and it seems safe to assume that these somites are used simply as res- ervoirs for the temporary storage of the male element. In somite 12, on each side of the intestine, is a large white mass consisting of numerous berry-like lobes, the whole attached by a small area to the posterior side of the dissepiment between sowites 11 and 12. Often they embrace the intestine and meet above it. These have been regarded as the testes because an examination of their contents shows them to contain the sper- matozoa in various stages of development. No means of com- munication between these bodies and the somites in front of them has been observed, but doubtless the matured product is discharged through the septum to which the testes are attached. The spermatozoa are certainly not set free in the cavity of the somite in which the testes lie. : The vasa deferentia receive the spermatozoa by two pairs of large flared openings, one each in somites 10 and 11. They lie upon the floor of the somites, within the nephridia, one on each side of the nerve ganglia. The vasa deferentia, passing from them, at once plunge into the integument and become embedded in the thick inner layer of muscle of the body-wall. The vasa uf each side soon meet, and thence continue side by Anatomy and Histology of a New Earthworm. 57 side towards the outiet in somite 19. They lie just outside the outer seta of the inner pair, are perfectly cylindrical, a little contorted, and gradually approach the exterior, so that at the point at which the ducts of the first pair of prostate glands pass to the exterior, the vasa are at the middle of the muscular layer in which they are embedded. Just before turning out- wards to their outlet in somite 19, they unite, and thus open by a single duct in the copulatory fossa, as already noted. From their position in the muscle layer, they cannot be traced by the methods of ordinary dissection, and it was only by cut- ting serial sections that they were finally traced to the external outlets. Four peculiar glands, doubtless the homologues of what have been named prostate glands in other genera of Oligo- cheeta, still remain to be described as a part of the male repro- ductive apparatus. In Diplocardia they have no direct con- nection with the vasa deferentia, but the products of both are discharged into the copulatory fosse, and thus the same re- sult is probably attained as would be by the passage of the vasa into the glands. Each gland opens by a separate duct at one end of a fossa. The glands are long, strap-shaped, orange- yellow bodies, floating for the greater part of their length free in the somatic fluid, so that they often pass by the apertures of the dissepiments into somites other than those in which they belong. They are abruptly bent where attached to the floor of the somites in which they open, and a large muscular duct arises near this end of the gland and penetrates the integu- ment to the exterior. Hach duct is accompanied by a pair of long copulatory setz, occupying the place of the inner pairs in somites 18 and 20. Excepting the form of the ovaries, the female genital organs of this genus are not especially different from those of Lumbricus. The ovaries are attached to the posterior face of the septum, between somites 12 and 13, and thus lie in the latter division of the body. They consist of rather large fan-like sheets of tissue, narrowing to a thick pedicel by which they are fastened to the septum, and under the micro- scope are seen to be made up of numerous parallel series of ova, growing more and more mature towards the free edges of 58 Illinois State Laboratory of Natural History. the sheets. The whole structure is folded upon itself in an irregular fashion, and its free edges may be very ragged from the tearing apart of the extremities of series of ova. . The oviducts may be found posterior to and opposite the ovaries in somite 13. Their free internal portions are trumpet- shaped structures having, when under the microscope, the appearance of a miniature calla lily. Behind the flared internal aperture the ducts are narrowed, and, passing through the dissepiment between somites 13 and 14, penetrate the body-wall in the anterior part of somite 14. Tue Nervous System. The cerebral nervous mass is very small as compared with that of Lumbricus and Allolobophora, and is correspondingly simple. It lies upon the pharynx, in somite 2, and is a slender, transversely elongated body, with a slight median anterior and and posterior impressed line of division between the two fused ganglia composing it. Its greatest diameter is less than a fourth of its length. As it lies in position it forms an arch, with the convex side posterior. Its surface is perfectly smooth, and no nerves arise from it except two large cords which supply the region about the mouth and arise one at each of its outer extremities. Numerous small white cords which are liable to be mistaken for nerves arise from its dorsal and ventral posterior surfaces, and extend posteriorly towards the skin, but their iridesceuce in sunlight shows them to be small bands of muscle. Strong commissures extend obliquely ah the sides of the pharynx from the extremities of the brain to the sub- pharyngeal ganglia in somite 3. A little ventrad of the brain each commissure gives off from its anterior edge a large nerve which extends forwards along the pharynx, parallel with the nerve arising from the extremity of the brain.. Two other small cords also arise from the anterior edge of each commis- sure; one near the ventral end of the dorsal third of its length, the other near the dorsal end of the ventral third. The com- missures gradually expand as they approach the first ventral nervous mass, their inner edges with the anterior edge of the Anatomy and Histology of a New Earthworm. 59 mass forming a gothic arch. From the expanded ventral part of each commissure is given off a fourth small nerve. The first ventral nervous mass is depressed, and sub- triangular in shape. Three large nerves arise from each side, and soon meet in one large strand. Their ultimate distribution has not been followed out. The ganglia posterior to the first are elongated elliptical, depressed masses, with strongly convex dorsal surface, and with no outward trace of division into two masses. The portions of the chain between the masses are very short, and show a slight median longitudinal impression as the only indication of a division into two cords. As the somites shorten towards the posterior end of the body, the nervous masses also become less elongated, and at the same time are brought closer together, the chain in the posterior part of the body being finally a succession of rounded swellings, with no interspaces. In the anterior somites each mass gives off from near its middle two large nerves on each side. They are directed forward and outward, and by large branches penetrate the body-wall. Other branches given off from them doubtless sup- ply the viscera. Near the anterior limit of each mass a small nerve passes outward and forward on each side to the anterior dissepiment of the somite in which the mass lies. Ganglia forming the posterior part of the chain give off only one pair of nerves. The posterior mass (possibly representing several fused pairs of ganglia) gives off three pairs of nerves. From its middle pass out the two ordinary nerves. Posterior to these the mass becomes narrowed and gives off two small nerves, which extend outward and backward. From its pos- terior extremity a third pair of large nerves diverge and extend backward toward the integument in the region of the vent. Tur NEPHRIDIA. A pair of tubular segmental organs, similar to those of Lumbricus, occurs in most of the somites of the body. The internal apertures of these organs are in line with the outer setze of the inner pairs, each aperture appearing in the somite preceding that in which its gland lies. The tube which passes through the septum from the aperture is small at 60 Illinois State Laboratory of Natural History. first, but rapidly increases in diameter, and passes outwards and upwards along the inside of the body-wall. Outside the outer pair of sete the tube is abruptly bent and returns upon its course until within the outer sete; then turns outwards - again and extends about half as far as in the first loop; returns again upon its course; and finally, as a slender tube, passes down within the mesentery which holds the gland to the body-wall, and reaches the latter in front of the dorsal seta of the outer pair. In specimens prepared according to Semper’s “dry method,” the nephridiopores show very clearly at the anterior edge of each somite, in line with the outer sete. There seem to be no pores in somites 1 and 2. All the specimens of Diplocardia thus far examined have shown the external apertures of the vasa deferentia on somite 19, and hence behind the clitellus. If we follow M. Per- rier’s classification rigidly, we must, therefore, place this genus in the group post-clitelliani. The position of the male pores so near the posterior limits of the gland would seem to indi- cate an intermediate position for the genus, and other features of its anatomy apparently confirm this impression by pointing to relations with genera in both the divisions intra-and post- clitelliani. Thus, of the fourteen characters of the genus Microcheta, one of the intra-clitelliani, given by Mr. W. B. Benham,* five (2, 4, 6,10, and 14) are, in essentials, common to the two genera, while as many more points of likeness could be selected which as clearly indicate a relation of the genera. M. Perrier’s genus Anteus, another of the intra-clitelliant, also bears some resemblance to Diplocardia. In both, the nephridio- pores are in a line with the dorsal seta of the outer pair; the anterior septa are thick and muscular; the set are disposed in four double, longitudinal rows, and the gizzard is anterior in position. Recognizing M. Perrier’s divisions as good, we may consider these resemblances to indicate an inferior position for our genus. The lower forms of a group often combine in themselves characters distributed in a number of higher forms, and this we may suppose to be the case with Diplocardia. At * Quart. Jour. Micr. Sci., N. Ser., No. CII., 1886, p. 291. Anatomy and Histology of « New Earthworm. 61 any rate its double heart, simple nervous system, the absence of a subneural blood vessel, together with its sluggish habit, mark Diplocardia as of low rank, and give us additional reason for placing it in the lowest of the three recognized groups.* The two genera of post-clitelliani with which Diplocardia has most in common are Acanthodrilus and Digaster, belong- ing to Dr. Claus’s family Acanthodrilide. With Acantho- drilus the genus here described agrees in the position of the nephridiopore, in the possession of four groups of modified set, in having four prostate glands, in the character and for- ward position of the gizzard, and in the character of the spermathece. Of the three species upon which M. Perrier based the genus Acanthodrilus he says: “ Leur caractére le plus saillant, celui qui frappe tout d’abord, c’est l’existence de quatre orifices génitaux males au lieu de deux. Par chacun de ces orifices, on voit sailler un faisceau de soies courbes, d’aspect nacré, tres- longues et plus ou moins rétractiles, sans l’etre toutefois d’une maniére compléte. Chacun de ses faisceaux constitue un véri- table pénis.”” In Diplocardia there are only two external open- ings for the sperm ducts, and these are not upon the somites upon which the pairs of prostates open (18 and 20), but upon the intermediate somite (19). They do not pass into the pros- tates and discharge the sperm through the ducts of the latter, but can be traced from the somites in the anterior region of the body, where they open into the body cavity as two separate tubes, lying side by side in the inner muscle layer of the body- wall until just at the external aperture, where they unite in one tube. The apertures are not accompanied by setz of any kind, the inner pairs of setw being wanting on somite 19. At the apertures of the ducts from the prostate glands on somites 18 and 20 are long, gently and uniformly curved sete, — one pair for each of these ducts. They occupy the position ordinarily occupied by inner pairs of sete, lie close together, are perfectly smooth, very slender, and are capable of complete * In some of its characters it approaches the aquatic Oligochata limicole. Eisen’s Californian genus, Ocnerodrilus, is like it in the separation of the two vasa deferentia of each side until the external aperture is reached. Criodrilus approaches it in having an incom- pletely double dorsal vessel. 62 Illinois State Laboratory of Natural History. retraction, no trace of them being commonly perceptible from without. These probably represent the modified sete of the prostate glands in Acanthodrilus, in which genus they are de- scribed as projecting fasicles of ornamented and more or less - retractile sete. The muscular duct of the prostate, with its ac- companying sets, does not, therefore, as in Acanthodrilus, con- stitute ‘‘ un véritable pénis,” the secretion of the prostates being in Diplocardia discharged independently of that of the seminal vesicles. This complete separation of the two sets of glands calls for another arrangement by which the secretions may be mingled, and this we have in the copulatory fossz and the re- lations of the apertures of the various ducts to them. (See figure.) Another difference between the two genera is in the number of spermathec: Diplocardia has three pairs, one each: in somites 7, 8, and 9, while Acanthodrilus has two pairs, one each in somites 8 and 9. With regard to the subneural blood vessel of earthworms, Mr. W. B. Benham (loc. cit.) says, “There is asub-neural trunk in all forms, except Pericheta, Pleurocheta, Pontodrilus [and Microcheta].” From this we must infer that Acanthodrilus possesses this trunk; but in Diplocardia it is wanting, as are also the supraneural vessels. In the imperfect cesophagus of Diplocardia we may perhaps find still another differerence. This division of the alimentary canal is represented in Mr. Beddard’s figure of Acanthodrilus layardi as a slender tube rather longer than the pharynx. It is represented as longer than the pharynx also in M. Perrier’s A. ungulatus. Finally, the two genera differ in the character of the dorsal vessel. Some species of Acanthodrilus have been described as having the dorsal trunk divided in a few of the an- terior somites, but in no description which I have seen has men- tion been made of a dorsal vessel made ap of two tubes through- out its length, as in the case in the genus here described. Not- withstanding these differences, Diplocardiaseems to the writer to be more closely related to Acanthodrilus than to Digaster. The position of the nephridiopores opposite the inner pairs of sete, and the two muscular gizzards in the latter genus, render it very distinct from either of the others, and makes a comparison with Diplocardia unnecessary. The species of Acanthodrilus have been obtained from the East India Islands, from Madagascar, Anatomy and Histology of « New Earthworm. 63 and from South Africa. It is a matter of some interest, there- fore, to find in this part of the world a genus bearing marks of close relation. Thus far a single species has been seen. It is rather com- mon in Illinois, generally occurring in soil, although occasion- ally found associated with species of Allolobophora in the com- post heaps of gardeners. It is apparently not at home in the latter situation, and the large examples are almost always taken in damp soil, where they probably breed. It is sometimes common in lawns, and after protracted rains may be secured in considerable numbers along walks, where it has been belated during its nocturnal wanderings. Its burrows extend for some depth into the soil, and, like Lumbricus, it excavates, during droughts, a chamber at the bottom of its burrow, where it re- mains coiled: up and perhaps inactive. Beyond this, little is known of its habits. . With regard to its distribution outside the State nothing positive can be said at present, but the writer is disposed to believe that he has seen this or a similar worm in the Hastern States. Within the State it is generally distributed, and will probably be found to occur in other states in the Mississippi Valley. Notes oN THE HistToLoay. In the course of attempts to stain examples of Diplocardia for section cutting, a surprising difference between it and the genus Allolobophora becomes apparent. Allolobophora stains well in Grenacher’s borax carmine preparation, the nuclei of all the tissues being brought out with the stain in a very satisfactory way. Diplocardia, on the contrary, does not stain well in this fluid, the result generally obtained with it being a diffuse color, with the nuclei of muscle and connective tissue poorly differ- entiated. The results were not due to any difference in the method of killing or preservation, for specimens of the two genera killed and preserved at the same time and in the same way gave this difference, and proved it to be due to something in the tissues themselves. Just what this something is we are not prepared to state, but the manner in which the tissues 64 Illinois State Laboratory of Natural History, respond to the stain would seem to indicate a difference in the chemical or physical properties of the tissues of the two genera, —a difference hardly compatible, the writer thinks, with any very close relation of the worms. The muscle fibers in the longitudinal layer of the body- wall are irregularly disposed (Figs. 13, 16, 17), and cross sections show nothing of the double series so characteristic of this layer in Lumbricus. With this exception there seems to be no essential difference between Diplocardia and Lumbricus with respect to the muscular system. The layers of the body- wall have about the same thickness relative to each other in both genera. Measurement of the body-wall beneath the nerve cord in the anterior part of the body of a Diplocardia of medium size gave a diameter of .40 mm., of which the cuticle and hypodermis together equaled .05 mm., the circular muscle layer .09 mm., and the longitudinal muscle layer .26mm. In the greater part of the wall of the alimentary canal the mus- cular tissue is not very conspicuous. In the gizzard, of course, it is greatly in excess of other tissues. (See Fig. 10.) In the rectum, also, the muscular layers become prominent. Measure- ments of the anterior portion of the rectum gave a thickness of .05 mm. each for the epithelium and circular muscle layer, and about .02 mm. for the longitudinal layer. Near the vent there is a still further increase in all the tissues, measurement giving for the epithelium a diameter of .15 mm., for the cir- cular muscle layer .10 mm., and for the longitudinal layer .05 mm. Everywhere the muscle fibers are bound together by connective tissue, which,in the body-wall, forms, in places, layers of some thickness; but probably nothing comparable to the “bundles” of vertebrate muscle exists. Cross sections of muscles present a good deal of variation in the size and shape of fibers. Some of this is due to the state of contraction in which the fibers are fixed by reagents ; but there is still variation in size not to be accounted for in this way, and probably indicating a real difference in the size of fibers. Sections may be .008-.012 mm. in longer diameter by .004 mm. in shorter diameter. The ribbon-shaped fibrils of which. the fibers are largely made up, are ranged in series ex- tending with the longer diameter of the fiber, giving to Anatomy and Histology of a New Earthworm. 65 sections the appearance of cross striation. In the small fibers they seem to form a single continuous series, the individual fibril being wider or narrower according to the part of the fiber it occupies. But in large fibers the fibrils reach across the shorter diameter only at the ends of the series, and medially form two series, one at each edge, with a central space between them, as if fibrils of a single series had been broken at the middle and the two series thus formed were slightly parted. Upon tearing apart the elements of stained fibers an inter- stitial granular protoplasm becomes apparent, adhering to the surfaces of fibrils in shreds and deeply-stained knots. Longitudinal vertical sections of the brain show the latter to be slightly depressed at the sides, where the sections are ellip- tical in contour. Medially the brain is less flattened. The fibrillar central tissue is surrounded everywhere, except anteriorly and along the ventral middle line, by numerous’ rather small unipolar nerve cells of the usual structure. Certain of the anterior cells, above and below, are larger than the others and occupy a depression in the fibrillar substance. The nervous tissue is invested and protected by fibrous con- nective tissue, the nuclei of which are scattered among the nerve cells and occur between the divisions of the fibrillar nervous matter. Outside this investing material is a moderately thick sheath, in which may be distinguished numerous blood vessels, connective tissue, and a highly refracting granular material, the nature of which has not been determined. Upon the posterior surfaces, dorsal and ventral, the bands of muscle referred to in another part of this paper can be seen, the larger bands consisting of about three fibers. Excepting these bands there seems to be no muscular tissue in the brain sheath. The sheath covering the dorsal side of the brain has a very sharply- defined inner boundary consisting of a membrane, apparently of homogeneous matter and probably a modified connective tissue. There is some appearance of such a membrane at the ventral side, butit is here much less distinct. The outer limits of the sheath are not well defined. The commissures between the cerebral and sub-cesophageal ganglia are enclosed in a thin sheath, in which may be seen the same refracting granules as are found in the brain sheath. No muscular tissue is present, apparently. 66 Illinois State Laboratory of Natural History. The sheath of the ventral nerve chain has a well-defined outer and inner limiting membrane of modified connective tissue, similar to that described for the cerebral ganglion. From the inner one, in some sections, fibers may be seen pass- ing in among the other tissues of the sheath, while occasional strands of connective tissue extend from it across the cord, at the sides of the median giant fiber, to the membrane of the opposite side of the cord. The.sheath is not as thick on the first ventral mass as it becomes farther to the rear, and it lacks here the muscle fibers, most of its substance being made up of granular matter and of blood capillaries. The muscular tissue of the sheath appears between the first and second ganglia, and shows on ganglion 2 as a series of fibers next the inner enclosing membrane of the sheath, the sheath being still made | up largely of the refracting granular material. Beneath the slender anterior division of the intestine the muscular tissue of the nerve cord becomes better developed, the fibers being large and not so closely confined to the inner membrane of the sheath. In the region of somites 19 and 20 the sheath is largely made up of muscle. (Fig. 19, Pl. IV.) The fibers of this muscle have exactly the same structure as those in the body-wall, consisting of series of flattened fibrils, with central space and interstitial protoplasmic substance. The sheath becomes thinner again posteriorly and loses much of its mus- cular character, the fibers appearing, as in front, as a series along the inner membrane of the sheath. (Fig. 21, Pl. IV.) It seems evident that the function of these muscles of the nerve sheath is to adjust the cord to the very great changes in the length of the body of the worm, and to accommodate it to the abrupt bending of the body from side to side which occurs during the creeping and burrowing operations of the living worm. A sudden change in length from a faot to six inches requires that the nerve cord be, by some means, readily adjusted to so abrupt and pronounced a change without taking harm or having its office interfered with. The longitudinal muscle fibers of the sheath doubtless shorten the cord at such times aud prevent its being thrown into folds. Sections of the cord from greatly shortened worms show an expanded condition, probably attributable to Anatomy and Histology of a New Earthworm. 67 this action of the muscles. These sections may be circular in outline, while sections from worms killed in an extended con- dition are transversely elliptical. Within the sheath of the ventral cord, connective tissue, giant fibers, nerve cells, and fibrillar nervous tissue are arranged as they are in Lumbricus and Allolobophora. The nerve cells occupy the lateral and ventral space within the sheath, and lie in little hollows in the connective tissue, with their contracted ends converging towards the points at which their fibers pass into the central nervous tissue. Most of the fibers from cells reach this tissue at the middle of the outside of the mass, and in sections are seen in a cluster about this region. Another set sends fibers into the inner ventral side of each half of the fibrillar tissue. (Pl. [V., Fig. 21.) The cells are thickly placed along the swellings, but become less abundant as the commissures are neared, and in the intervals between ganglia are completely lacking for a short distance. The central substance of the nerve chain is seen, in cross sections, as two lightly staining areas, chiefly granular or fibril- lar, apparently according to the reagents through which the tissue has been passed. At the center of the swellings this matter fuses across the middle line below the giant fibers. Elsewhere the substance of each side remains separate, with the intervening space occupied by fibrous connective tissue. The giant fibers are three in number, as in Lumbricus and Allolobophora, and occupy the same position relative to the other parts of the cord asin these genera. They do not appear in the subceesophageal ganglion, but in the interval between this and the succeeding mass the median fiber appears abruptly, while the two smaller lateral fibers appear some distance further to the rear. In the region of the eighth or ninth somite the lateral fibers become clearly visible, but are not yet half the diameter of the median fiber. At the extreme posterior end of the cord the giant fibers are lacking, but beneath the rectum the three are of equal size, the lateral fibers having gradually increased in diameter from before backward. The connective tissue completely invests the fibers which lie in the ganglia in a series just within the sheath of the cord and chiefly above the central nervous substance. They do not vary 68 Lllinois State Laboratory of Natural FHistory. with the cord in diameter, and to accomodate them to the diminished size of the cord between ganglia the median fiber is there brought down between the divisions of the central nervous matter. Unlike these structures in Allolobophora, the . giant fibers are in this worm provided with a thick and well- defined connective tissue sheath (Plate IV., Fig. 19, 2) which isolates them from the surrounding connective tissue. The axis of each fiber is hollow, and in the living worm is filled. with a semifluid matter which, in the sections of hardened tissue, is seen as a deeply staining granular residue, sometimes forming a film on the wall of the cavity, sometimes giving imperfect stellate transections, and, again, filling the whole space. The walls of the axial space are well-defined, and in many cross sections examined I have seen aring of small discs about it, as if the wall were made up of small longitudinally disposed rods, the dises being their cross sections. Focusing on sections with high powers gives an appearance of fibers passing from this wall into the central space.* The fibers of the connective tissue sheath of the giant fibers seem to anastomose with those of the ordinary connective tissue of the nerve cord. The fibers of the sheath seem fo join the “rods” imme- diately about the axial space. Nothing has been seen of the vertical septum mentioned by Dr. Leydig as dividing the cavity of the median fiber in Lumbricus, and no connection between the giaut fibers and the nerve cells or central nervous tissue has been found. As to the function of the giant fibers I am disposed to accept Vejdovsky’s view, that they are supporting structures instead of parts of the nervous apparatus proper. Whether or not they can be considered homologues of the notochord of vertebrates must, it seems to me, be left until more has been done’ with the embryology of invertebrates. They prokably originate with the sheath and connective tissue of the cord, and thus independently of the essential nervous tissues. * See Dr. Leydig’s note on the giant fibers of earthworms. (Die riesigen Nervenrohren im Bauchmark der Ringelwurmer, Zool. Andz., 1886, p. 591.) + Structures which resemble the giant fibers of earthworms are present in the ventral cord of Cambarus, and are said to occur also in Anatomy and Histology of a New Earthworm. 69 | The columnar epithelial cells with which the alimentary canal is lined are, in a large part of the canal, indurated and united at their inner ends, and in the middle division of the intestine are densely and strongly ciliated. Nothing of interest can be added to the published accounts of the hypodermis in related worms. Numerous gland cells of several forms occur with the more slender cells which make up the bulk of the layer. Toward the anterior and posterior extremities of the body the cells become gradually longer, and thus approach in character the epithelium of the stomodzum and proctodzum. Sense organs in the form of small clusters of fusiform cells, bearing a close resemblance to the goblet-shaped organs of the skin of fishes and amphibians, are very abundant in the hypodermis about the ambulatory sete. Within the wall of the alimentary canal are developed ex-- tensive blood sinuses, the great extent of which was not sus- pected before the wall was studied by sections. In the large division of the intestine there is a considerable space between the intestinal epithelium and the circular muscle layer, which is filled with blood. Across this space stretch bands of connective tissue from the epithelium to the muscle layer. (Pl. Ill., Fig. 14.) In the small anterior division of the intestine, also, we find an extensive system of lacunex in which the blood circulates, and is brought in contact with the lining ‘epithelium of the canal. (PI. III., Fig. 15.) It is in these spaces, doubtless, that the blood receives the food material secreted from the contents of the intestine. other arthropods. As seen in the above-named genus they lack the connective tissue sheath so conspicuously developed in Diplocardia, and owing to the more perfectly disparate character of the cord there is no place for a median fiber. They appear to be simply longitudinal channels in the connective tissue, and represent, perhaps, the axial part of the fibers of earthworms. These channels contain, in pre- served tissues, a residue in which, in addition to the minute granules such as occur in the fibers of Allolobophora, there are scattered cor- puscular bodies of larger size. 70 Illinois State Laboratory of Natural History. The appended account of North American earth- worms has been drawn up largely from the works of Hisen, Rosa, and Uhde. Only the oligochwta terricolw are given, and probably the list of these will prove far from complete when more attention has been given to collecting and studying our species. The Lumbricus americanus, Perrier (echerches pour servir Vhistoire des Lumbriciens Terrestres, p. 44), which is said by its describer to represent:in New York the L. terrestris of Europe, is probably one of the species of Allolobophora of the list given below. The description of L. apii, Kinberg, from California, has not been seen. I wish here to acknowledge indebtedness to Prof. Forbes for his kindness and liberality in the matter of special papers on Oligochxta, and to Messrs. McCluer and Weed, who have remembered me on several occasions with fine lots of living specimens. Anatomy and Histology of a New Earthworm. 71 FAMILY LUMBRICIDA. Genus TETRAGONURUS, HIsENn. (Ofy. af K. Vet.-Akad. Forh., 1874, No. 2, p. 47.) Prostomium only partly dividing the buccal somite. Out- lets of vasa deferentia in somite 12. Intervals between the four double rows of set about equal. Body cylindrical anteriorly ; quadrate in section posteriorly. Tetragonurus pupa, Kisen. 7’. pupa, Eisen, Ofv. af K. Vet.-Akad. Forh., 1874, No. 2, p. 47. Somites 40. Clitellum on somites 18-22. Tubercula pu- bertatis on somites 19, 20,and 21. Length, 25mm. Niagara, Canada (Eisen). GENUS ALLOLOBOPHORA, HIsEN. ( Ofv. af K. Vet.-Akad. Forh., 1873, No. 8, p. 46.) Prostomium not completely dividing the buccal somite. Outlets of vasa deferentia in somite 15. Seta in pairs or separated. Allolobophora_beckii, Hisen. Lumbricus puter, Hisen, Ofv. af K. Vet.-Akad. Forh., 1870, p. 959. Dendrobena beckii, Eisen, ib., 1878, No. 8, p. 58. Allolobophora beckti, Rosa, Lumbricidi del Piemonte, 1884, p. 48. Setz in four nearly equidistant rows, the dorsal interval a little the largest. Somites 80-95. Clitellum on somites 29-33. Tubercula pubertatis on somites 31,32, and 33. Length of living examples, 30-40 mm. Newfoundland (Hisen). Allolobophora riparia, Hofftm. Lumbricus riparius, Hoffm., Arch. f. Naturg, 1843, p. 189. Allolobophora chlorotica, Rosa, Lumbricida del Piemonte, 1884, p. 34. Dorsal pores beginning between somites 3 and 4. Sete of pairs close together. Somites 80-100. Tubercula pubertatis on somites 31,33, and 35. Clitellum on somites 29-37. Length 50-80 mm. California (Eisen. ) 72 Illinois State Laboratory of Natural History. Allolobophora fetida, Savigny. Enterion fatidum, Sav., Cuv., Hist., des progr. des se. nat., 1828, T. 4, p. 14. Lumbricus olidus, Hoffm., De verm. quib. ad gen. Lumb,, 1842. Allolobophora fetida, Kisen, Ofy. af. K. Vet.-Akad. Forh., 1873, No. 8, p. 50. Dorsal pores beginning before somite 7. Seti of pairs close together. Somites 85-105. Tubercula pubertatis on somites 28, 29, 30, and 31. Clitellum on somites 25,* 27-82. Length 80 mm. Champaign, [Il., abundant. Allolobophora subrubicunda, Eisen. A subrubicunda, Eisen, Ofy. af. K. Vet.-Akad. Forh., 1873, No. 8, p. 51. Dorsal pores beginning before somite 7. Intervals be- tween sete 1, 2, 3, and 4, about equal. Somites about 110. Tubercula pubertatis on somites 28, 29, and 30. Clitel- lum on somites 26-31. Length 90 mm. Niagara, Canada ( Hisen ). Allolobophora mucosa, Hisen. A. mucosa, Kisen, Ofv. af K. Vet-Akad. Forh., 1873, No. 8, p. 47. Lumbricus communis, Hoffm. (in part), Arten d. Regenw., 1845. Dorsal pores beginning before somite 7. Set of pairs close together. Somites 130. Tubercula pubertatis on somites 29, 30, and 31. Clitellum on somites 25, 26-32. Length 50-70 mm. when alive and moderately extended. Champaign, IIL. frequent. New Hngland (Hisen). Allolobophora turgida, Hisen. A turgida, Eisen, Ofv. af K. Vet-Akad. Férh., 1873, No. 8, p. 47. Lumbricus communis, Hoffm. (in part). Dorsal pores beginning between somites 8 and 9, Sete of pairs close together. Somites 104-240. Tubercula puber- tatis on somites 31 and 83. Clitellum on somites 27, 28-834, sometimes 27, 28-35. Length 60-160 mm. Champaign, ILl., abundant ; also received from North Carolina. New England and Canada (Hisen). *The numbers indicating the position of the clitellum are here used as in the descriptions of Eisen, the first number showing the degree to which the anterior portion of the clitelluam may vary. Anatomy and Histology of a New Earthworm. 73 | Allolobophora tenuis, Hisen. , A. tenwis, Eisen, Ofv. af K. Vet.-Akad, Forh, 1874, No. 2, p. 44. Somites about 100. Clitellum on somites 25, 26-31. Tu- bercula pubertatis on somites 28 and 29. Length 50-60 mm. N. England, Canada, California (Hisen ). Allolobophora twmida, Hisen. A. tumida, Eisen, Ofv. af K. Vet.-Akad. Forh., 1874, No. 2, p. 45. Somites about 40. Clitellum on somites 21-28. Tuber- cula pubertatis on somites 26 and 27. Length about 30 mm. N. England ( Hisen). Allolobophora parva, Kisen. A. parva, Eisen, Ofv. af K. Vet-Akad. Forh., 1874, No. 2, p. 46. Somites about 100. Clitellum on somites 23-29. Tuber- cula pubertatis on somites 24, 25, 26, 27, 28, and 29. Length about 40 mm. N. England (Hisen.) } Allolobophora nordenskioldit, Eisen. A. nordenskioldii, Kisen, On the Oligocheta collected during the Swedish Arctic Expeditions in the years 1870, 1875, and 1876, p. 6. Somites 80-125. Tubercula pubertatis on somites 28, 29, and 30. Length 80-150 mm. Closely allied to A. fwtida. Obtained by Hisen in Siberia; credited to North America by Vejdovsky. Genus Lumpricus, LrInne. (Linné, Syst. Nat., 1735.) Prostomium completely dividing the buccal somite. Out- lets of vasa deferentia in somite 15. Set in pairs, four to each somite. Lumbricus herculeus, Savigny. Enterion herculewm, Sav.. Cuy., Hist. des progr. des se. nat., IT., p. 108, 1828. LIumbricus terrestris, Linné, 1767. Iumbricus agricola, Hoffm., 1842. Somites 112-180. Clitellum on somites 32-37. Tubercula pubertatis on somites 33, 34, 35, 36. Length of living ex- amples 150-300 mm., varying in alcohol, according to Rosa, from 90-150 mm. New England (Eisen). 74 Illinois State Laboratory of Natural History. Lumbricus rubellus, Hoffm. Somites 95-150; bi- or triannulate. Clitellum on somites 26, 27-31, 32. Tubercula pubertatis on somites 28, 29, eh 31. Length 70-120 mm. Newfoundland (KHisen). Lumbricus purpureus, Hisen. L. purpureus, Eisen, Ofy. af K. Vet.-Akad. Forh., 1870, No. 10, p. 956. Somites 90, bi- or triannulate. Clitellum on somites 28-33. Tubercula pubertatis on somites 29, 30, 31, 32. Length of liv- ing worms 50-70 mm., of alcoholics 30-50 mm. Niagara, Canada (LHisen ). FAMILY ACANTHODRILIDA. This family is represented by the genus Diplocardia, which has been described in the first division of this paper. Hundreds were seen this spring im this locality, migrating during showers of rain. FAMILY PLUTELLIDA. This family is represented by Plutellus heteroporus, de- scribed by Perrier, in 1873, from Pennsylvania. The following characters will serve to distinguish it from other worms: Sete, eight in each somite, equidistant. Spermathece, a pair in each of somites 5, 6, 7, 8, and 9, each with a blind appendage. Entire nephridium in one somite, not extending through the anterior septum. External outlets of oviducts in somite 10, in line with inner sete. External outlets of vasa deferentia in somite 18. Clitellum in somites 14, 15,16 and 17. A “ pros- tate gland”’ and penis present. Length 150 mm. FAMILY PERICHAITIDA. : A fine species of the genus Pericheta is becoming common in the hot-houses of the University, where it has probably been introduced with exotic plants. The numerous described species of this genus have been obtained chiefly from southeastern Asia, and, as far as I know, this is the first record of its occur- rence in North America. I have not seen all the published Anitomy and Histology of a New Earthworm. 75 descriptions, and can not, therefore, determine it as to species. The worm is noticeable among our forms from its active movements and extreme irritability. Body cylindrical, smooth, shining. Color, olive-brown, lighter below. Somites 110. Clitellum on somites 14, 15, and 16, constricted. External outlet of oviducts single, median, in a slight prominence on the ventral side of somite 14. Male outlets in two large ventro- lateral papillee, one on each side of somite 18. Four pairs of spermathecz a pair, opening at the anterior edge and ventral side of somites 6, 7, 8, and 9 respectively. Rings of sete with a very slight median ventral hiatus, 48-55 in a ring,as counted in the anterior part of the body. Length 138-150 mm. 76 Illinois State Laboratory of Natural History. EXPLANATION OF THE FIGURES. PLATE I. Fig. 1— Longitudinal vertical section through the anterior part . of the body. a, Pharynx. b, Gizzard, showing the two thick bands of transversely disposed muscle of which its walls are largely com- posed. c,(isophagus. d, Cerebral ganglion. e, Ventral nerve chain. J, Two of the thickened muscular septa. Fic. 2—Anterior part of the alimentary canal. a, Pharynx, with radiating bands of muscle. 06, Gizzard. ¢,disophagus. d, Swol- len beginning of intestine. e, “ Prostate glands.” Fie. 3.— Anterior part of the dorsal vessel and part of the genital organs. a, Dorsal vessel. 6, Two of the large “aorte”. c, One of the small contorted afferent blood vessels. d, Spermathecie. e, Sem- inal vesicle (?). #, Testicle. g, Ovary. h, Oviduct. PLATENAT: Frias. 4-9.— Cross sections of the pharynx, showing the manner in which the dorsally situated tongue extends into the cavity of the pharynx. a, Pharynx. 6b, Nerve cord which supplies integument in region of prostomium. c, Tongue, appearing asa slight dorsal fold in Fig. 6. and becoming gradually larger and more muscular pos- teriorly, as in Fig. 9. d, Cerebral ganglion. e, Subpharyngeal ganglion. Fie. 10.— Cross section of the muscular gizzard. Fic. 11.— Dorsal view of the prostomium and the six anterior somites. Fig. 12.— Ventral view of somites 13-20, showing. the clitellum on somites 13-18. a, External aperture of the oviducts. 6, One of the anterior copulatory papille. c, Copuiatory sete and aperture of “prostate gland”. d, External aperture of vasa deferentia. e, One of the posterior copulatory papille. PLATE III. Fie. 13.— Cross section through the intestine. a, Dorsal vessel. b, Intestine. ec, Typhlosole. d,Subintestinal blood vessel. e, Ventral nerve chain. jf, Sections of small contorted afferent blood vessel. g, Cuticle of integument. h, Hypodermis. 7, Circular muscle layer. j, Longitudinal muscle layer. Fig. 14-—-Part of the wall of the intestine greatly enlarged. a, Ciliated intestinal epithelium. 6, Coagulated blood occupying sin- uses between epithelium and circular muscle layer (c) of intestine. d, Longitudinal muscles of intestine. e, Bands of tissue extending across sinuses from epithelium to circular muscle layer. 7, Connective tissue layer. Anatomy and Histology of a New Earthworm. 77 Fic. 15.— Cross section through cesophagus. a, Dorsal vessel. 6, (Esophagus. c, Blood spaces in walls of esophagus. d, Chloragogue layer. Fie. 16.— Cross section of the body in the region of the rectum, a, Dorsal vessel. 6, Rectum. d, Subintestinal blood vessel. e, ven- tral nerve cord. PLATE IV. Fie. 17.—Section of the body-wall passing through the ducts of the anterior “prostate glands.” a, Sections of the embedded vasa deferentia. 6, Ducts of the “prostate glands’’ passing to the ex- terior. c, Portions of the copulatory set. d, Ventral nerve cord. e, Longitudinal muscle layer of body-wall. /, Circular muscle layer of body-wall. g, Hypodermis. Fie. 18.— a, Locomotor seta. 6, Copulatory seta. Fic. 19.— Cross section of the ventral nerve cord of anterior part of body, from between ganglia. a, Sheath of large median giant fiber. 6, One of lateral giant fibers. c¢, Greatly developed muscular sheath of cord. d, Fibrillar nervous tissue invested with connective: tissue. e¢, Axial substance of median giant fiber here drawn to one side. Fia. 20.— Dorsal view of cerebral ganglion. a, Nerve which sup- plies region of prostomium. 6, Commissure. c, Muscular bands arising from posterior side of ganglion. Fie. 21.— Cross section of ventral nerve cord from posterior part of body through ganglion. a, Median giant fiber. 6, Lateral giant fiber. c, Sheath of cord. d, Fibrillar nervous tissue. e, Unipolar nerve eells. 7, Origin of lateral nerve. Fic. 22.— Enlarged section of typhlosole and dorsal vessel, show- ing small intestinal vessel entering dorsal vessel at b. a, Left division of dorsal vessel. c¢, Dorsal vessel of right side, without intestinal branch (due to section not being true). d, Typhlosole. PLATE V. Fie. 23.— Ovary. Fie. 24.— Oviduct. Fie. 25,.— Section of an ovum from the ovary. a, Investing con- nective tissue membrane (probably lost or resorbed when the egg is set free). 6, Nuclei of connective tissue membrane. c, Nucleus of ovum. d, Nucleolus. Fie. 26.—Spermatheca. a, Coevum. b, Duct. Fic. 27.— Copulatory fossa greatly enlarged. a, Fossa. 6, Vasa deferentia, which unite near the external aperture at c. d, Aperture of“ prostate glands”. e, Copulatory setie. Fie. 28.—“ Prostate gland”. a, Duct. eee Br - = — m a aon 4 < } PLATE IL. FER: EK AT PL ’ 2 to Wy Nd ee aS = 2 3 : ; PS SS rragtn Sodas SS —— a i a prrveacesrnareasts y F 7 ES on us Lb c Ts, ll PLATE Y. as + STAI ArtictE V.— A Descriptive Catalogue of the Phalangiine of Illinois. By CuarEence M. Weep, M. Sc. INTRODUCTION. The great majority of the American species of those fa- miliar creatures commonly known as “ harvest-men ” or “ dad- dy-long-legs”’ (not to be confounded with the crane-flies— Tipulide — which go by by the latter name in Europe) belong to the subfamily Phalangiine of the family Phalangide of the suborder Opilonea and order Arthrogastra. Though abundant and widely distributed, these arachnids have as yet received | comparatively little attention in this country. The first Ameri- can descriptions were published by Thomas Say in 1821 (Jour. Phil. Acad. Nat. Sci., Vol. IL., pp. 65-68), when four species were characterized under the genus Phalangiwm. Besides the above the only descriptive paper that has appeared is that by Dr. Horatio C. Wood, Jr., entitled “On the Phalangez of the United States of America,” which was published in 1868 in the Communications of the Essex Institute (Vol. VI. pp. 10-40). In 1885, Prof. L. M. Underwood published a list of the described species (Canadian Entomologist, Vol. XVI., pp. 167-169), but added nothing to our knowledge of the group. Finally, in the “‘ American Naturalist” for October, 1887 (Vol. XXLI., p. 935), the present writer published a brief note calling attention to the proper generic position of several species hitherto retained in the old genus Phalangium. In the present paper I have followed, in a general way, the classification adopted by Simon in his admirable monograph Les Arachnides de France (Vol. VII.), and my characteriza- tions of genera are little more than translations from this author. For an elaborate discussion of the anatomy and rela- tions of the group, I must refer the reader to the above mono- graph and other general works on the subject. The Laboratory collections on which this paper is based, * have largely been made within the last two years, and represent 80 Illinois State Laboratory of Natural History. the phalangid fauna of the northern, central, and southern por- tions of Illinois. I have also received, through the kindness of my brother, Mr. Howard KE. Weed, a fine series of certain species from Lansing, Michigan; and from Mr. T. P. Carter, a number of specimens collected at Jacksonville, Il]. I am, further, under special obligations to Mr. Chas. W. Woodworth, who has verified my determinations of several of Wood’s species by comparison with the types in the Museum of Comparative Zoblogy at Cambridge; and have to thank Professors Forbes and Garman and Mr. Chas. A. Hart for many favors. The Phalangiine are found abundantly from midsummer until late in autumn in the fields and woods, especially about rocky ledges, and in the vicinity of barns and out-houses. They ordinarily hide during the day, but at twilight wander about in search of food. Until quite recently it has generally been supposed that they captured and ate living insects; but Dr. H. Henking, of Germany, has shown* that they prefer dead insects, and seldom, if ever, attack living ones. The females of most species deposit spherical white eggs in the ground in autumn, and the adults ordinarily do not survive the winter. One species (Liobunum (?) formosum), however, seems to be an exception to this rule, as I have found the adults abundant during the early spring months. The harvest-men are easily collected and preserved in alco- hol for study or exhibition. As the genital organs are fre- quently of great value in determining species, it is well to pre- serve them exposed —a simple operation, requiring only that the abdomen of the living specimen be compressed between the thumb and finger, when these organs will be extruded, and if the specimen is immediately dropped into alcohol will ordinarily remain exposed. CHAMPAIGN, Ixx., Nov. 22, 18877. ; * Zeitschrift fiir Wissenschaftliche Zoologie, Vol. XLYV., p. 87. The Phalangiine of Illinois. 81 SUBFAMILY PHALANGIINA. Arachnids having the body composed of a single piece with long slender legs. Teguments not coriaceous. Segments only indicated by striw, which are often obsolete. Five ventral segments. A single anal piece. ‘Two lateral pores easily seen. Stigmata visible. Maxillary lobe of palpus with two tubercles. EKpistoma in the form of a triangular plate. The three genera that have been recognized in Illinois may be distinguished as follows : I. First joint of mandibles with a tooth on ventral surface near base. A. Maxillary lobes of second pair of feet, with a large base, impressed, straight and elongated, not at-. tenuate, but rather a little enlarged from the base to the apex and very obtuse ; claw of palpus den- BEE TERA eet et tie a) Stat aca es lege E Liobunum, B. Maxillary lobes of second pair of feet forming elon- gated triangles, quite large at the base, then gradually retracted, not impressed, with anterior border straight; claw of palpus not denticu- RAGES Meret eer os he EN Ss Oligolophus. II. First joint of mandibles without tooth...... Phalangium. LIOBUNUM, C. Kocnu, 1839. Teguments soft or subcoriaceous. Strive of the cephalo- thorax and of the three last abdominal segments very distinct ; those of the anterior segments scarcely or not at all distinct (especially in the 4). Anterior and lateral borders of the cephalothorax smooth. Eye eminence relatively small; smooth or, rarely, provided with small, slightly distinct, tubercles; widely separated from the cephalic border. Lateral pores small, oval, and marginal. Anal piece large, transverse-oval or semicircular, much wider than long, and much wider than the reflected borders of the eighth segment. Mandibles short, similar in the two sexes ; first joint furnished at the base below with an acute tooth. Palpi simple; femur, patella, and tibia 82 Illinois State Laboratory of Natural History. without any process and without projecting angles ; maxillary lobe provided at the base with two strong, conical teeth. Max- illary lobe of the second pair of feet very long, nearly straight from the base, not attenuated, directed mesad nearly horizon- © tally, and united on the ventro-meson to the lobe from the opposite side without forming a sensible angle; the two together lightly arched on the cephalic border, and forming an even curve. Sternal piece large, slightly contracted: between the fourth pair of coxe, gradually enlarging and obtusely truncate cephalad. Feet very long and slender ; tibia of the second pair with a few false articulations. Palpal claw denticulate. The following synopsis will aid in distinguishing our Illi- nois species: 1. L.dorsatum. Dorsum grayish or reddish brown, with distinct central dark marking. Palpi long, reddish brown. Body of ¢ 5 mm. long; second legs 50 mm. Northward. 2. L. vittatum. Much like dorsatum, but body is larger and legs are much longer. Body of ¢ 7 mm. long; second legs 90 mm. 3. L. nigropalpi. Dorsum reddish brown, with central marking subobsolete. Middle joints of palpi blackish. Body small; legs very long. Body of ¢ 4 mm. long; second legs 100 mm. : 4. L. verrucosum. Dorsum reddish, with subobsolete central marking. Palpi brownish white. Body large, with legs comparatively short and thick. Body of ¢ 6.5 mm. long; sec- ond legs 50 mm. 5. LL. elegans. Dorsum blackish on margins, brownish in middle, with a faint indication of a central marking. Palpi light brown. Very small, with long, slender legs. Body of ¢ 3.2 mm. long; second legs 38 mm. : 6. JL. politus. Dorsum and trochanters clear reddish brown, with scarcely an indication of acentral marking. Body of 4 5 mm. long; second legs 51 mm. 7. LL. (?)calear. Dorsum reddish brown, with faint cen- tral marking. Femur of palpus, with a robust spur-like pro- cess on its outer ventro-lateral surface. Body of ¢ 7.5 mm. long; second legs 40 mm. The Phalangiine of Illinois. 83 8. L.(?) formosum. Dorsum very smooth, blackish. Pa- tella of palpus with its inner distal lateral angle prolonged into a short apophysis, with a thin brush of hairs on its lateral surface. Body 5 mm. long; second legs 22 mm. L. dorsatum, (Say). Phalangium dorsatum, Say, Jour. Phil. Acad. Nat. Sci., Vol. II., p. 66. —————_—_—_—_——_——— Wood, Commun. Es ex Inst.. Vol. VL., p. 18. 2. Body 5 mm. long, 3.5 mm. wide. Palpi 7 mm. long. Legs: I., 27 mm.; IL, 50 mm.; IIIL., 27 mm.; IV., 36 mm. / LIOBUNUM DORSATUM. 4 Dorsum granulate, varying from a light grayish-brown to a deep reddish-brown, often of an intermediate, somewhat golden, tint. A well marked dark stripe begins at the eye emi- nence, expands for a short distance, then contracts until it reaches the cephalic portion of the abdomen, whence it runs with parallel sides a short distance, then very slightly expands un- til it reaches the caudal third of the abdomen, where it contracts and runs asastripe to the anus. Cephalothorax with an irregular parallelogrammic dark V-shaped marking cephalad of the eye 84 Illinois State Laboratory of Natural History. eminence, sometimes obsolete, especially in older specimens. In some individuals there is so much black cephalad of the eye eminence that the central marking appears to begin on the cephalic margin of the cephalothorax. Eye eminence of about . equal height, length, and breadth, sloping slightly backward, dark above, canaliculate, with a few (two to five or six) sub- obsolete acute blackish tubercles. Mandibles very light brown, tips of claws black; dorsal surface of second joint sparsely coy- ered with short spinous hairs. Palpilong, reddish brown, depth of color varying with the rest of the body. Femur with a row of short conical tubercles on its outer ventro-lateral surface, commencing near the base and running to the apical extremity, where there are about a dozen similar tubercles on the ventral surface; another short, slightly oblique series on the dorsal surface, beginning at the apical margin and extending distally, about one fourth the length of the femur. Patella with a row of tubercles on its outer ventro-lateral surface, similar to those on the femur, and a few subobsolete ones on its dorsal and ventral surfaces. Tibia with two nearly parallel rows of tuber- cles, one on the ventral and the other on the outer ventro- lateral surface; a short row also on the distal portion of its inner ventro-lateral surface. Tarsus sparsely covered with stiff hairs, and furnished with a well pronounced row of dark tubercles on its inner ventro-lateral surface. Ventrum varies from whitish to dark reddish-brown, with well marked gran- ulations in older specimens. Coxe slightly tuberculate, each having a row of short tubercles on the cephalic margin. Legs varying from light grayish-brown to black, with darker annu- lations. Shaft of penis slender, distally bent nearly at right angles, and terminating in a very acute point. @. Body 5-7 mm. long, 3.5-4.5 mm. wide. Palpi 5 mm. long. Legs: I., 27-30 mm.; IL., 50-61 mm.; III., 28-31 mm. ; IV., 40-44 mm. Differs from male as follows : Body much thicker and more rounded. Color generally darker with much less reddish. Legs brownish rather than black. Palpi very much more slender, shorter, and having the The Phalangiine of Illinois. 85 tubercles partially replaced by hairs. Apical portion of ovi- positor white, with no dark rings. : Described from many specimens. Collected by the hun- dred in Champaign county at all times between the latter part of June and early in November. Also taken at various dates late in sammer and throughout the fall in Edwards, Kankakee, Lake, La Salle, McLean, and Morgan counties, in Illinois, and received from Lansing, Michigan. This is by far the commonest species throughout the northern portion of the State. It develops largely in the fields and woods, and, when full grown, apparently migrates to the vicinity of houses, barns, and out-buildings, where it sometimes congregates in great numbers. I have found the young ones very common in corn fields, among the leaves of the growing plants, where I suspect they live upon the numerous small © insects drowned in the moisture contained in the bases of the unfolding leaves. They become mature in June. I was at first much puzzled over this species because of the great variation in the color of different specimens, and was inclined to separate the series then at hand into two species. Being able to find, however, no structural difference, and noticing that the deeply colored specimens were the only ones obtained late in autumn, and, also, that the light ones were only taken early in the season (7. ¢., soon after they became adults), it occurred to me that the color might vary with the age of the individual. After examining hundreds of specimens collected at various times between July and November, I became con- vinced that such was the case, and the field observations of the present season have verified the conclusion. L. vittatum, (Say). Phalangium vittatum, Say, Jour. Phil. Acad. Nat. Sci., Vol, IL., p. 65. ——_—_—_—_——— Wood, Commun. Essex Inst., Vol. VI., p. 20. 4. Body 7 mm. long, 4 mm. wide. Palpi 7 mm. long. Legs: I., 44 mm; II., 89 mm.; IIL, 45 mm.; [V., 64 mm. Dorsum reddish brown, with a central dark marking com- mencing at the eye eminence and extending caudad to the 86 Illinois State Laboratory of Natural History. ultimate or penultimate segment, slightly contracting near cephalic* margin of abdomen, then gradually expanding until about the beginning of the caudal third of the abdomen, where it again slightly contracts. Ventrum slightly paler than. dorsum; both finely granulate and entirely glabrous. Eye eminence slightly wider than high, black above, canaliculate, with small black tubercles over the eyes. Mandibles light yellowish-brown, tips of claws black ; second joint with short, sparse hairs. Palpi long, reddish brown; tarsal joints paler. Femur and patella curved, with two rows of rather blunt, dark tubercles on the outer ventro-lateral surface ; femur also having a few small subobsolete ones on its dorsal surface. Tibia with a similar row on its outer ventro-lateral surface, a short row on the distal portion of its inner ventro-lateral surface, and a short row on the proximal portion of its ventral surface. Tarsus pubescent, with a row of short, blunt, black tubercles on the inner ventro-lateral surface, extending from thé base to near the apex. Legs light brown or black, patella generally black and tarsi brown, the other joints varying from one color to the other. Cox reddish brown, minutely tuber- culate. Trochanters generally dark brown, with minute scat- tered tubercles. Femora and patelle with fine spinose tu- bercles. Tibize with very short hairs. Shaft of penis slender, subcylindrical, not broadened distally, bent at an obtuse angle and terminating in a very acute point. 9. Body 8-9 mm. long, 5-6 mm. wide. Palpi 5 mm. long. Legs: I., 42 mm.; IT., 90 mm.; IL]., 43 mm.; IV., 61 mm. Besides its rounder body and much more robust appear- ance, it differs from the male as follows: Dorsum of a much darker shade of brown, with less of the reddish tint, and ventrum paler. Second joint of mandibles with fewer hairs. Palpi shorter, more slender, with the rows of tubercles on the tibia subobsolete, and that on the tarsus entirely wanting. Legs generally light brown, with black annulations at the articulations. Ovipositor white, with no color in the apical rings. § Described from many specimens collected in Union Co., Ill., September 25th, 1886. It has also been obtained in Johnson Co., Ill., and at Hast Cairo, Ky. The Phalangiine of Illinois. 87 This species is very abundant on the rocky ledges of certain parts of southern Illinois, being, in fact, the commonest har- vest-man in the region, apparently replacing P. dorsatwm. On the farm of Mr. Parker Earle, at Cobden, I obtained a long series of both sexes, the creatures being everywhere abundant about the rocky bluffs running across the place. Dr. Wood has shown that L. vittatum and L. dorsatum are very closely allied and difficult to separate. According to him, the former may be looked upon as the southern representative of the latter, of which he had never seen any specimens from farther south than Washington, D.C. After examining hun- dreds of specimens of dorsatum and dozens of vittatum, I am unable to fiud any constant structural character by which they may be separated, though the difference in the size of the body and length of legs is very marked. I have only collected the latter species iate in the season when the individuals were fully colored, but from some alcoholics collected earlier, I judge ‘that it undergoes the same color changes as dorsatum., L. nigropalpi, (Wood). Phalangium nigropalpi, Wood, |. ¢., p. 22. 4. Body 4 mm. long, 3 mm. wide. Palpi 4 mm. long. Legs: I., 49 mm.; II., 99 mm.; IIL, 50 mm.; IV., 67 mm. Dorsum minutely tuberculate, reddish brown, with a subobsolete dark central marking, sometimes simply repre- sented by obscure dark blotches. Hye eminence at least as broad as high, black above, canaliculate, with small black tubercles on the carinew. Mandibles light yellowish-brown, tips of claws black; second joint with sparse hairs. Palpi slender, light brown, distal portion of femur, and almost all of patella, black; femur, patella, and tibia with small scattered tubercles, and short hairs; tarsus pubescent, with a row of subobsolete, small, black tu- bercles on its inner ventro-lateral surface. Ventrum paler than dorsum, of a nearly uniform tint. Coxe minutely tuberculate, of same color asventrum. Trochanters black. Legs very long, slender, black, with white annulations at distal extremities of femur and tibia, especially in the second and fourth pairs. Shaft of penis flattened, contracted near its distal extremity, ‘and bent upwards, terminating in an acute point. 88 Illinois State Laboratory of Natural History. Described from many specimens collected at Cobden, Union Co., Ill., 25th September, 1886. We have also specimens from Johnson county. The males of this species are much more numerous than. the females. Out of a large number of specimens collected, I was surprised not to find a single female. Wood states that he found six times as many males as females. According to him, ‘The females are to be distinguished by their larger size, the brown color of their legs and palpi, as well as the darker and less uniform color of the dorsum, which also frequently loses almost all of the reddish tint.” This species is chiefly remarkable for the enormous length of its legs. Though the body is very small, the legs are im- mensely developed. Like L. vittatum, this harvest-man fre- quents the rocky ledges of southern Illinois, where it is quite abundant. I have never taken it anywhere else. L. verrucosum, (Wood). Phalangium verrucosum, Wood, 1. c., p. 29. 2. Body 6.5 mm. long,4mm. wide. Palpi4.6mm. Legs: Ti, 27 mm. + 11.50 mimi; Li 28mm: ; 1Vi389 mime Dorsum minutely tuberculate (almost appearing finely granulate), of a rich dark golden-brown color, somewhat darker in front, with a faint indication of a dark central mark- ing in some specimens. Hye eminence well pronounced, longer than high, black above, scarcely at all canaliculate, with two rows of small black tubercles, frequently subobsolete. Man- dibles light brown, tips of claws black; second article with sparse dark hairs. Palpi slender, grayish or brownish in some specimens, with more or less black on basal joints. Femur with short, scattered hairs; ventral surface beset with well- developed black tubercles. Patella curved, with short -hairs and small black tubercles. Tibia and tarsus thickly beset with short hairs ; without tubercles, except a subobsolete row on the inner ventro-lateral surface of tarsus. Ventrum grayish brown, cephalic portion tuberculate. Legs dark brown or black. Trochanters tuberculate. Femora, patelle, and tibie, with rows of small spines. Shaft of penis straight, except at tip, broad, flat ; about two thirds of the way from the base to The Phalangiine of Illinois. 89 the apex expanding into an alate portion, which continues.for about one fifth the entire length of the shaft, then suddenly contracting into a rather robust, curved, canaliculate end, and terminating in an acute point; with two curved spinous hairs just behind the base of the jointed tip. Described from several specimens collected in Champaign Co., Ill, 23d to 26th June, and 8th July, 1887. L. elegans, sp. n. é. Body 3.2 mm. long, 2.1mm. wide. Palpi 2.1 mm. long. Legs: L., 19 mm.; I1., 38 mm.; ILL., 20 mm.; IV., 29 mm. Dorsum blackish at the margins, especially on the abdo- men, and light brownish in the middle, with a faint indica- tion of a central marking. Finely granulate, with numerous very small black tubercles scattered in patches over the surface, and a transverse row of larger whitish tubercles on each abdom- inal segment. Hye eminence prominent; light brown, darker above; canaliculate, with two rows of well developed tubercles, having whitish bases and black tips. Mandibles whitish, tips of claws black. Palpi slender, light brown. Femur, patella, and tibia, with distant, short, spinose tubercles. Tarsus with whitish hairs. Ventrum whitish brown, with a transverse row of tubercles on each abdominal segment, and the pectus and coxe closely tuberculate. Legs very slender, proximal portions light brown, distally darker. Femora furnished with minute blackish spines. Described from two specimens collected in Champaign Co., Ill., during the autumn of 1886. L. politus, sp. n. 4. Body 5 mm., long, 2.8mm. wide. Palpi 3.5 mm. long. Legs: I., 25 mm.; II., 51 mm.; III., 26 mm.; [V., 36 mm. Dorsum smooth, finely granulate; clear reddish brown, with no marking and only a faint indication (shown by a slightly dark shade) of the usual central marking. Eye eminence rather prominent, black above, canaliculate, with a regular curved series of small, acute, black spines over each eye. Mandibles whitish, with tips of claws black. Palpi slender, whitish, with 90 Illinois State Laboratory of Natural History. femur and patella dusky; finely pubescent, with a subobsolete row of minute dark tubercles on the inner ventro-lateral sur- face of femur, and another row on the inner ventro-lateral sur- face of tarsus. Ventrum reddish brown. Coxe, including the- membranous distal lateral tips, reddish. Trochanters brownish red. Proximal portions of legs light brown, darker distally. Shaft of penis nearly straight, slender, flattened, canaliculate, distal portion very slightly expanded, then slightly contracted, and again expanded in a half spoon-shaped portion, and ter- minating in a small, acute point. Described from three specimens collected about a shed, Champaign Co., Ill., 25th July and 9th August, 1887. Leo?) CaicareCWood): Phalangium calcar, Wood, |. ¢., p. 26. é. Body 7.5 mm. long, 45 mm. wide. Legs: I., 21 mins 21 40mm: ll 22 mov see om. Dorsum reddish brown, minutely tuberculate, tubercles blackish, some specimens having a faint indication of a central marking, and scattered light-colored spots. Hye eminence of moderate size, of nearly equal height, length, and breadth ; black above ; scarcely at all canaliculate; with two rows of small acute tubercles. Mandibles brownish white, with obscure markings of a darker color, especially on the inner dorso-lateral surface of the second joint, where they are arranged in the form of a series of irregular parallelograms ; dorsal surface of second joint sparsely clothed with stiff hairs ; tips of claws black. Palpi long, very robust; reddish brown, lighter distally. Femur enlarging from base to apex, with a very robust spur- like process on its outer ventro-lateral surface near the distal extremity, the anterior edge of which is provided with a row of short, black tubercles; dorsal surface of femur with numerous scattered, short, black tubercles; and a few also on the prox- imal portion of the inner ventro-lateral surface ; sparsely pro- vided with spinous hairs. Patella short, thick, so united with the femur as to form an arch, with sparse hairs and a few ' scattered tubercles on its dorsal and outer lateral surfaces. Tibia arched, densely clothed with long black hairs; a patch of short black tubercles on the proximal portion of its ventral The Phalangiine of Illinois. 91 surface, and a short row of similar tubercles on the apical portion of its inner ventro-lateral surface. Tarsal joint densely clothed with long black hairs, with a thick row of short black tubercles on its inner ventro-lateral surface, terminating in a short denticulate claw. Ventrum light reddish-brown. Coxe reddish, with a few short hairs ; two anterior pairs with a row of subobsolete tubercles on the cephalic border. Trochanters light brown, darker dorsally. Remaining joints of legs light brown with darker annuli; femora, patella, and tibiz, with rows of short spines. Shaft of penis very robust, flattened, distally contracted and curved, and terminating in a short, acute point. Described from four specimens collected in Champaign Co., Ill., 23d June and 9th August; 1887, and at Cave-in- Rock, Hardin Co., Ill., 27th July, 1883. So far as I know, the female of this rare form has never. been taken. I refer this species, provisionally, to Liobunwm, although, on account of the spur-like process on the femur of the palpus, it does not strictly belong there. L. (?) formosum, (Wood). Phalangium formosum, Wood, 1. c., p. 30. é, 2. Body 4-6 mm. long, 2.5-3 mm. wide. Palpi 2.6 mm.long. Legs: [.,10 mm.; IL, 22 mm.; IIL, 11 mm.; IV., 16 mm. Dorsum remarkably smooth, mot- y, tled with gray and blackish brown ; nae wide a dark brown or black central ge \ é . marking commences on the cephalic i margin and runs to the middle of ae the fifth abdominal segment, where Pan MY, ase it abruptly terminates ; it is expanded f * on the cephalothorax, contracted on A Na the first abdominal segment, and ee nS then again expanded. The entire Lyonunum (2) rormosuM abdomen caudad of the middle of the fifth segment usually much lighter than the part cephalad. There is a_ peculiar oblique sinus caudad of each lateral pore. Eye eminence 92 Illinois State Laboratory of Natural History. brownish, perfectly smooth, not at all canaliculate, almost hemispherical. Mandibles whitish, with the usual black tips to the claws; second article with sparse blackish hairs on dorsal surface. Palpi rather slender, mottled, distally whitish; furnished with short blackish hairs. Patella with its inner distal lateral angle prolonged into a short apophysis, and having a rather thin brush of hairs on its inner lateral surface. Tarsal claw denticulate. Ventrum, including cox, grayish brown, cephalic portion with short dark hairs. Trochanters brownish black. Legs light brown, ringed with dark brown ; furnished with very minute blackish spines. Described from many specimens collected in Champaign, Effingham, and McLean counties. I refer this species to the genus Liobunum, for the present, with considerable hesitancy, as it does not strictly belong there on account of the projecting inner angle of the palpal patella. Its life history also is different from that of any other mem- ber of the family with which I am acquainted, as it lives over winter as an adult instead of depositing eggs and dying in autumn, as do the other species. I have collected it repeatedly under boards in fields during the months of September, October, November, January, April, and May. PHALANGIUM, Linn. 1758. Teguments soft or subcoriaceous. Striz of the cephalo- thorax, and of the three last abdominal segments very distinct, those of the five cephalic segments only slightly so. Cephalic border of the cephalothorax smooth; lateral border more or less toothed; dorsum nearly always furnished with small teeth. Dorsum of abdomen having transverse series of small teeth or hairs. Eye eminence of medium size, canaliculate, provided with two series of pointed tubercles, always separated from the cephalic border by a space larger than its diameter. Lateral pores large, elongate-oval, sub-marginal, visible from above. Anal piece quite small, wider than long, of the same width, or scarcely narrower than the curved borders of the eighth seg- ment. Mandibles short and simple in the female, often more developed and provided with tubercles in the male; first article unarmed below. Palpi simple, often having the inner distal The Phalangiine of Illinois. 93 angle of the femur and of the patella very slightly produced, but never prolonged into a process; hairs equal, or sometimes thicker on the inner side, but not forming a brush; patella always shorter than tibia; maxillary lobe provided at the base with two conical tubercles. Maxillary lobe of the second pair of legs much longer than wide, gradually narrowing from the base to the extremity, directed obliquely forward and not meet- ing, anterior border straight. Pectus large, parallel between the coxe, rounded in front or slightly lanceolate, more rarely enlarged and obtusely truncate. Feet long, more or less robust, tibiz without false articulations. Claws of palpus simple. P. cinereum, Wood. Phalangium cinereum, Wood, Commun. Essex Institute, Vol. VI., p. 25. 4. Body 5-6 mm. long, 3 mm. wide. Palpi 4 mm. long. ~ Legs: I., 21-82 mm.; II., 42-52 mm.; III., 23-33 mm.; [V., 32- 43 mm. Dorsum cinamon-gray, with a slightly darker subobsolete, wide, vase-shaped, central marking; with transverse series of small spinose tubercles caudad of the eye eminence, and a curved series cephalad of it. These tubercles having whitish bases and acute black apices, and also generally having a spinous hair arising on one side of the tubercle near the apex of the white portion, and reaching beyond the tip of the tubercle. Cephalad of the eye eminence, there are also two longitudinal series of these tubercles of about three each. Lateral borders of cephalothorax sub-sinuate. Hye eminence low, canalicu- late, with a series of five or six tubercles, like those on the dorsum, surmounting each eye. Mandibles brownish white, tips of claws black; second joint and apical portion of first joint furnished with short, black, stiff hairs. Palpi light brown, rather slender, first four joints with minute tubercles and short black hairs; none of the angles prolonged; tarsal joint without tubercles, but with hairs. Claw moderately robust. Ventrum (including coxe), light grayish-brown, with many somewhat quadrangular patches of a more pronounced brown, and scattered blotches of chocolate-brown. Trochanters light brown, with many small tubercles. Remaining joints of legs cinnamon-brown, more or less annulated with darker and we 94 Illinois State Laboratory of Natural History. lighter shades; angular, with longitudinal rows of black spines. Sheath of penis subcylindrical, truncate. Shaft robust, with two lateral oval openings near distal extremity, then con- tracted into a blunt scoop-shaped piece, turned upward at nearly a right angle, and terminating with a slender acute point. . In very small specimens of this species, as of many others of the group, the tubercles on the body and members are often partially wanting or replaced by hairs. @. Body 7.8 mm. long, 3.5 mm. wide. Palpi 4 mm. long. Legs: I., 20 mm.; IL, 86 mm.; II., 20 mm.; IV., 28 mm. Differs from ¢ as follows: Dorsum darker gray, more mottled; central marking more distinct. Tubercles on eye eminence more numerous, and those forming the longitudinal series cephalad of the eye eminence also more numerous. Palpi with hairs, but without tubercles. Legs with annulations more distinct; trochanters without ~ tubercles; spines on femur less prominent and on tibia obso- lete. Narrow quadrangular brown patches on ventrum of abdomen arranged in transverse series. Distal joints of ovi- positor black. Described from many specimens collected in Champaign Co., Ill., during October, 1886, and August, 1887. I have also received a fine lot of this species from my brother, Mr. Howard E. Weed, collected at Lansing, Michigan, where it was very common during the autumn of 1886. OLIGOLOPHUS, C. Kocn, 1872. Teguments soft or subcoriaceous. Strive of the cephalo- thorax and of the three last abdominal segments very clear, those of the first five segments only slightly distinct. Anterior border of the cephalothorax smooth, or provided at the middle with three small geminated points; lateral borders more or less spiny; dorsal surface of cephalothorax nearly always pro- vided with small teeth. Abdomen presenting transverse series of small teeth or hairs. Hye eminence of medium size, as wide as long, or a little wider than long, lightly canaliculate, pro- vided with two series of low tubercles, separated from the The Phalangiine of Illinois: 95 anterior border by a space wider than (often nearly double) its diameter. Lateral pores large, oval, submarginal. Anal piece quite large, wider than long, at least as wide as the bent bor- ders of the eighth segment, rounded before, its posterior border truncate and slightly curved. Mandibles quite short, and nor- mal in both sexes; first article provided below at the base with a pointed tooth, slightly curved in front. Palpi, inner surface of the extremity of the femur, patella, and tibia thickly fur- nished with hairs forming a brush; upper internal angle of the femur and patella slightly projecting, rarely prolonged; patella slightly shorter than tibia, enlarged from the base to the extremity; maxillary lobe having at the base two conical tubercles. Maxillary lobe of the coxe, and feet as in Phalan- gium. O. pictus, (Wood). Phalangium pictum, Wood, 1. ¢., p. 30. é. Body 6 mm. long, 3.2 mm. wide. Palpi 4.1 mm. long. Legs: I., 10 mm.; II., 24 mm.; IIT., 12 mm.; [V...17 mm. Dorsum minutely scabrous, - oe mottled ash-gray, much lighter “s_ ah erG in some specimens than others. eee SE ale sae Dark central marking generally aN ff very distinct, commencing at the eS a cephalic border of the cephalo- ON thorax, the dorsal surface of f \ which it almost covers, and sud- oF \ denly contracting at its caudal ra ‘ margin, so that it starts on the —Ottcorornus ricrus. 4 abdomen asa narrow line, slightly wider than the eye eminence, then gradually expanding until it reaches the end of the cephalic third of the abdomen, where it suddenly contracts, its borders irregularly curving toward the dorso-meson, then expanding again,— though not becoming as wide as before,— and finally gradually contracting and running as a stripe to the anus, or, as in some specimens, simply terminating at the cephalic mar- gin of the penultimate segment. Cephalic margin of cephalo- thorax nearly straight, lateral angles slightly produced, each having a black spine on an elevated base; three large brownish 96 Illinois State Laboratory of Natural History. black tooth-like processes just caudad of the middle of the margin, each terminating with a minute spine, the middle proc- ess being shghtly cephalad of the others. Dorsad of these but cephalad of the eye eminence, there is a curved series of minute spines on whitish elevated bases, and caudad of the eye eminence on the cephalothorax there are two similar nearly transverse series. There is also a similar transverse series on each segment of the abdomen — most easily seen on the black central marking. Eye eminence large, brownish, canaliculate; each carina having four thick, brownish tubercles, each of which terminates in a black spine. Mandibles hight brown, tips of claws black; dorsalsurface of second joint and of apical portion of first joint furnished with short black hairs ; second joint with a blunt tubercle on its inner dorso-lateral sur- face, just above the base of the finger forming part of the claw, and the apical portion of its outer lateral surface (caudad of the insertion of the thumb) prolonged into a tubercular process. Thumb with a prominent dorsal tubercle near its base. Palpi mottled; the outer ventro-lateral portion of the femur with an irregular row of long, slender, white tubercles, terminating with black spines; inner ventro-lateral surface with a series of long, black, curved, spinous hairs; inner lateral surface with similar shorter hairs more numerous, forming a brush on the slightly produced inner distal angle; dorsal and outer lateral surfaces with short spinous hairs. Patella nearly as long as tibia, its inner distal angle produced and furnished with a brush of black hairs with recurved tips; shorter hairs in dis- tant rows on its dorsal and lateral surfaces. Tibia with its inner lateral distal angle slightly swollen, but not projecting — forward as does that of the patella, but furnished with a similar brush of hairs; outer ventro-lateral surface with a sub- obsolete row of white tubercles, tipped with spinous hairs; dorsal and outer lateral surface furnished with sparse short hairs. Tarsus thickly covered with long black recurved hairs, usually with a row of subobsolete, short, black tubercles on its inner ventro-lateral surface, and terminating in a moderately robust simple claw. Ventrum light grayish-brown, hispid. Legs short, robust. Coxe light gray, covered with spinous hairs on elevated bases. Trochanters light brown or grayish, The Phalangiine of Illinois. 97 tuberculate. Remaining joints mottled with blackish brown and gray; all except tarsi with longitudinal rows of small black spines, and acute tubercles on their dorso-distal borders. Tibiz angular. Tarsi hairy. Sheath of penis enlarged dis- tally, truncate ; shaft moderately robust, distally canaliculate, then expanded into a spoon-shaped portion, and terminating in a short, black, acute, articulated piece. 9. Body 7 mm. long, 4.5 mm. wide. Palpi4.3 mm. long. Ringed portion of ovipositor 4 mm. long. Legs: I, 11 mm.; Pe 20 mm.; 111.13 mm.; LV., 20 mm. Besides its larger size and more robust appearance, it dif- fers from the male in having no tubercles on the mandibles ; joints of ovipositor grayish. Described from many specimens collected in Champaign Co.; Ill, during September, October, and November, 1886. Articte VI.— A Partial Bibliography of the Phalangiinw of North America. By CuarEncE M. Weep, M. Se. It is believed that there are included below most of the references to this group in our American literature. I have placed an interrogation point after the genus of several species of Phalangium of which I have seen no specimens, but which probably do not belong to that genus as now restricted. GHNERAL ARTICLES. 1821. Say, Tuomas. An account of Arachnides of the United States. Jour. Phil. Acad. Nat. Sci., Vol. IL, (Phalangiine, pp. 65-68). Complete Writings, Vol. II., pp: 18-15. The first descriptive paper treating of the group. Four species of Phalangium described; viz., dorsatum, vittatum, nigrum, and grandis. 1868. Woon, Horatio C., Jr., M.D. On the Phalangee of the United States of America. Communications of the Essex Institute, Vol. VI., pp. 10-40. : An elaborate paper on the family as a whole. Anatomy and habits discussed. 15 species of Phalangtinx described under genus Phalangium, 11 being new. Fair wood-cuts illustrate most of the species. 1885. Unpsrwoop, Lucien M., Ph.D. A Preliminary List of the Arthrogastra of North America (excluding Mexico). Canadian Entomologist, Vol. XVII. (Phalangiine, pp.' 167-169). An enumeration of the described species with bibliographical references. 1887. Weep, CLraArENcE M. The Genera of North American Phalangiin «. American Naturalist, Vol. XXI., p. 935 (October, 1887). Attention is called to the proper generic position of several species. Method of extruding the genital organs of Phalangiinx described, 100 Illinois State Laboratory of Natural History. 1889. Weep, Crarence M. A Descriptive Catalogue of the Phalangiine of Illinois. Bulletin [Illinois State Lab- oratory of Natural History, Vol. IfL, Article V., pp. 79-97, Extended descriptions of ten species, two being new. Notes on © distribution, life history, and habits. REFERENCES TO SPECIES. 1. LiopuNum porsatum, (Say). Phalangium dorsatum. Say, Jour. Phil. Acad. Nat. Sei., Vol. IL, p. 66 (1821). Complete Writings, Vol. ITL., p. 13. Original descriptions fr>m specimens in the cabinet of the Academy. “‘Inhabits the United States.” Phalangium dorsatum, Say. Wood, Commun. Essex Insti- tute, Vol. VI., pp. 18-19, 21, 39, figures la—Lc. (1868). Extended descriptions and measurements of both sexes. Collected in N. Y., D.C.,and Penn. An out-door species. Supposed young are whitish. Compared with P. vittatum, of which it 1s supposed to be the northern representative. Phalangium dorsatum, Say. Packard, Guide to the Study of Insects, pp. 656-657, fig. 632 (1869). Mention of its distribution. Common at Salem, Mass. Phalangium dorsatum, Say. Gratacap, American Natural- ist, Vol. XVI., p. 120. Experiments on influence of oxygen on harvest-men. Specimens placed in the gas were somewhat excited, and lived twenty-four hours. Phalangium dorsatun. Kingsley, Standard Natural His- tory, Vol. II., p. 122 (1884). Mention. Phalangium dorsatum, Say. Underwood, Canadian Ento- mologist, Vol. XVIL, p. 168 (1885). Bibliographical references. Liobunum dorsatum, (Say). Weed, American Naturalist, Vol. XXI., p. 985 (October, 1887). Referred from Phalangium of previous authors to Liobunum of C. Koch, as defined by Simon. The Phalangiine of North ‘America. 101 Liobunum dorsatum, (Say). Weed, Bull. Ill. St. Lab. Nat. Hist., Vol. III., pp. 83-85 (1889). Elaborate description and measurements. Taken in northern and centrai Illinois and Michigan. Developed largely in fields and woods, and migrates to houses and barns. Commonest species in northern Illinois. Compared with JZ. vittatum, which is considered its southern representative. 2. Liopunum virtatum, (Say). Phalangium vittatum. Say, Jour. Phil. Acad. Nat. Sei., Vol. IL. p. 65 (1821). Complete Writings Vol. IL, p. 13. Original description from specimens in the cabinet of the Academy. “ Inhabits the Southern States.” ‘ Phalangium vittatum, Say. Wood, Commun. Essex Insti- tute, Vol. VI., pp. 20-21, 39, figs. 2a—2d. (1868). Extended description and measurements. Taken in Texas and Nebraska. Compared with P. dorsatum, which is supposed to be its © northern representative. Phalangium vittatum, Say. Underwood, Canadian Ento- mologist, Vol. XVII., p. 168 (1885). Bibliographical references. Liobunum vittatum, (Say). Weed, American Naturalist, Vol. XXL, p. 935 (October, 1887). Referred from Phalangium of previous authors to Liobunum of C. Koch, as defined by Simon. Liobunum vittatum, (Say). Weed, Ball. Il. St. Lab. Nat. Hist., Vol. III., pp. 85-87. (1889). Elaborate description and measurements. Common in southern Illinois where it frequents rocky ledges. Taken also in Kentucky, Compared with L. dorsatum, which it closely resembles, and of which it is supposed to be the southern representative. 3. LioBUNUM NIGROPALPI, (Wood). Phalangium nigropalpi. Wood, Commun. Essex Institute, Vol. VI., pp. 22-28, 39, figs. 3a-3c. (1868). Original description from specimens taken in woods in Huntingdon Co., Penn. Males six times as numerous as females. Phalangium nigropalpi, Wood. Underwood, Canadian Entomologist, Vol. XVII., p. 168 (1885). Bibliographical references. 102 Illinois State Laboratory of Natural History. Liobunum nigropalpi, (Wood). Weed, American Natural- ist, Vol. XXI., p. 985 (October, 1887). * Referred from Phalangiwm of previous authors to Liobunum of C. Koch. Liobunum nigropalpi, (Wood). Weed, Bull. Ill. St. Lab. Nat. Hist., Vol. III., pp. 87-88 (1889). Elaborate description and measurements. Taken in southern Illinois about rocky ledges. Males much more numerous than females. Remarkable for length of legs. 4, LiopuNnumM vEeRRUCOsUM, (Wood). Phalanyium verrucosum. Wood, Commun. Essex Institute, Vol. VI., pp. 29-30, 40 (1868). Original description of some males of unknown locality in the Essex Institute Collection. Phalangium verrucosum, Wood. Underwood, Canadian Entomoiogist, Vol. XVIL., p. 168 (1885). Bibliographical reference. Liobunum verrucosum, (Wood). Weed, American Natu- ralist, Vol. XXI., p. 935 (October, 1887). Referred from Phalangium of previous authors to Liobunum of C. Koch. Liobunum verrucosum, (Wood). Weed, Bull. Ill. St. Lab. Nat. Hist., Vol. III., p. 88-89 (1889). Extended description of male from specimens collected in Cham- paign Co., Ill. 5. LriopuNUM ELEGANS, Weed. Liobunum elegans. Weed, Bull. Ll. St. Lab. Nat. Hist., Vol. IIL., p. 89 (1889). Original description from males taken in Champaign Co., Ill. 6. Liosunum pouitus, Weed. Liobunum politus. Weed, Bull. Ill. St. Lab. Nat. Hist., Vol. IIL, pp. 89-90 (1889). : Original description from males collected at Champaign, III. 7. Liopunum (?) catcar, (Wood). Phalangiumcalcar. Wood, Commun. Essex Institute, Vol. VL., pp. 26-27, 39, figs. 62-6). (1868). Original description of male collected in mountains of southwestern Virginia. Two females that are conjectured to belong to same species also described. The Phalangiine of North America. 103 Phalangium calcar, Wood. Underwood, Canadian Ento- mologist, Vol. XVIL., p. 168 (1885). Bibliographical reference. Liobunum (?) calcar, (Wood). Weed, American Natu- ralist, Vol. XXI., p. 935 (October, 1887). Taken from Phalangium of previous authors and provisionally re- ferred to Liobunum, although the palpal spur renders its generic position doubtful. Liobunum (?) calear, (Wood). Weed, Bull. Ill. St. Lab. Nat. Hist., Vol. III., pp. 90-91 (1889). Extended description of males collected in Champaign Co., Ill. Provisionally retained in Liobunum. 8. Liopunum (?) Frormosum, (Wood). Phalangium formosum. Wood, Commun. Essex Institute, Vol. VL., pp. 30, 40 (1868). Original description of females collected in the District of Columbia. - Phalangium formosum, Wood. Underwood, Canadian En- tomologist, Vol. XVII., p. 168. Bibliographical deference, Liobunum (?) formosuin, (Wood). Weed, American Nat- uralist, Vol. XXI., p. 985 (October, 1887). Taken from Prado iuen of previous authors and provisionally. re- ferred to Liobunum, although on account of palpal angle it does not strictly belong there. Liobunum (?) formosum, (Wood). Weed, Bull. Tl. St. Lab. Nat. Hist., Vol. IIL. pp. 91-92 (1889). Extended description of both sexes. Unlike other species, it hiber- nates as an adult. Provisionally retained in Liobunum. 9. Liopunum (?) BicoLtor, (Wood). Phalangium bicolor. Wood, Commun. Essex Institute, Vol. VL, pp. 28, 39, fig. (1868). Original description from two females taken in Delaware county, Penn. Phalangium bicolor, Wood. Underwood, Canadian Ento- mologist, Vol. XVIL., p. 168 (1885). Bibliographical reference. Liobunum (?) bicolor, (Wood). Weed, American Natu- ralist, Vol. XXI., p. 935 (October, 1887). In absence of specimens, it is conjectured that the species may belong to Liobunum rather than Phalangium. 104 Illinois State Laboratory of Natural History. 10. Lropunum (?) veNTRICOSUM, (Wood). Phalangium ventricosum. Wood,Commun. Essex Institute, Vol. VL, pp. 32-833, 39, fig. 7 (1868). Original description of female and supposed male. Taken 1n Penn. - and Neb. Phalangium ventricosum, Wood. Packard, Guide to the Study of Insects, p. 657, fig. 683 (1869). Mention. Said to be widely distributed in United States. Phalangium ventricosum, Wood. Underwood, Canadian Entomologist, Vol. XVIL., p. 169 (1885). Bibliographical reference. Liobunum (2?) ventricosum, (Wood). Weed, American Naturalist, Vol. XXI., p. 985 (October, 1887). In absence of specimens, it is conjectured that this species belongs to Liobunum rather than Phalangium. 11. PHALANGIUM cINEREUM, Wood. é Phalangium cinereum. Wood, Commun. Essex Institute, Vol. VL, pp. 25-26, 39 (1868). Original description from specimens taken in northern New York. Phalangium cinereum, Wood. Underwood, Canadian En- tomologist, Vol. XVII., p. 168 (1885). Bibliographical reference. Phalangium cinereum, Wood. Weed, American Natural- ist, Vol. XXI., p. 985 (October, 1887). Said to belong to the genus Phalangium, as restricted by Simon. Phalangium cinereum, Wood. Weed, Bull. Ill. St. Lab. Nat. Hist., Vol. III., pp. 98-94. (1889). Extended descriptions of both sexes. Taken in Champaign Co., Ill., and at Lansing, Mich. 12. PHALANGIUM (?) MAcuLOsSUM, Wood. Phalangium maculosum. Wood, Commun. Essex Instttute, Vol. VL, pp. 81-82, 40, fig. (1868). Original description of both sexes from specimens collected in Penn. and W. Va. Phalangium maculosum, Wood. Underwood, Canadian Entomologist, Vol. XVII., p. 168 (1885). Bibliographical reference. The Phalangiine of North America. 105 13. PHananerum (?) Favosum, Wood. Phalangium favosum. Wood, Commun. Essex Institute, Vol. VI., pp. 28-29, 40 (1868). Original description from a single female collected in Nebraska. Phalangium favosum, Wood. Underwood, Canadian En- tomologist, Vol. XVIL., p. 168 Odd Bibliographical malevonte. 14. PHALANGIUM NIGRUM, Say. Phalangium nigrum. Say, Jour. Phil. Acad. Nat. Sei., Vol. II., pp. 66-67 (1821). Complete Writings, Vol. IL., p. 14. Original description. “Not uncommon in the Carolinas and Georgia.” Phalangium nigrum, Say. Wood, Commun. Essex Insti- tute, Vol. VI, pp. 84-35, 40 (1868). Form from Texas and Nebraska, supposed to be same as Say’s species described. Say’s description also quoted. Phalangium nigrum, Say. Underwood, Canadian Ento- mologist, Vol. XVIL, p. 168 (1885). Bibliographical references. 15. PHALANGIUM (?) GRANDE, Say. Phalangium grandis. Say, Jour. Phil. Acad. Nat. Sci., Vol. IL., pp. 67-68 (1821). Complete Writings, Vol. IL., p. 14. Original description. ‘“ Inhabits the Southern States.” Phalangium grande, Say. Wood, Commun. Essex Insti- tute, Vol. VI., pp. 34, 40 (1868). Simple quotation of Say’s description. Had seen no specimens. Phalangium grande, Say. Underwood, Canadian Ento- mologist, Vol. XVII., p. 168 (1885). Bibliographical references. 16. PHALANGIUM (?) ExrLIpEs, Wood. Phalangium exilipes. Wood, Commun. Essex Institute, Vol. VL, pp. 23-24, 39 (1868). Original description from three specimens collected in California and Nevada. Phalangium exilipes, Wood. Underwood, Canadian Ento- mologist, Vol. XVII., p. 168 (1885). Bibliographical reference. 106 Illinois State Laboratory of Natural History. 17. OxteoLtopHus protus, (Wood). Phalangium pictum, Wood, Commun. Essex Institute, Vol. . VI., pp. 80-31, 40. Original description from a single female, taken near Salem, Mass. - Phalangium pictum, Wood. Underwood, Canadian Ento- mologist, Vol. XVII., p. 169 (1885). Bibliographical reference. : Oligolophus pictus, (Wood). Weed, American Naturalist, Vol. XXI., p. 935 (October, 1887). Referred from Phalangium of previous authors to Oligolophus. . Oligolophus pictus, (Wood). Weed, Bull. Ll. St. Lab. Nat. Hist., Vol. III., pp. 95-97 (1889). Extended descriptions of both sexes, collected in Champaign Co., Ill. ARTICLE VII.—On an American Earthworm of the Family Phreoryctide. By 8S. A. Forsss. In 1843 W. Hoffmeister described in Germany ( Wieg- mann’s Archiv f. Naturgesch., 1843) a peculiar, long, and very slender worm found in a well, giving it the generic name of Haplotaxis, and, after its discoverer, Menke, the specific name of menkeanus. Two years later this generic name was set aside by the same author for that of Phreoryctes, Haplotaxis having been already used in botany. In 1859 another species of the genus was found, also in Germany, by Schlotthauber | and noticed as Georyctes lichtensteinii (Beitr. z. Helmintho- logie),— a name which has now given way to that of Phre- oryctes filiformis (Claparéde) Vejdovsky. In 1888 the well- known helminthologist, Beddard, of England, published in the “Annals and Magazine of Natural History” a description of a worm from New Zealand which he assigned with some doubt to this genus under the name of Phreoryctes smithii, amending at the same time the definition of the genus (especially with reference to the sexual organs) to include this species. These three forms, two from continental Europe and a doubtful one from New Zealand, are thus the only examples of the genus and family hitherto reported. In America these worms have been mentioned, previous to the discovery of the present species, only by Minot in the Standard Natural History (1885), where a general illustrated account of the genus is given with the remark that so far as the author knows, it has been found only in Germany. In March, 1880, the writer hereof received from a well in McLean county, Illinois, and preserved in alcohol, without study, a very long and slender pale red worm, remarkable for its disposition to coil itself into seemingly inextricable knots. In April of the present year (1890) I received from Mr. G. W. McCluer, Assistant Horticulturist of the Agricultural Experiment Station at Champaign, a thick mass of fine roots 108 Illinois State Laboratory of Natural History. of the elm, taken from a tile in a farm drain. Here, in com- pany with a large number of the ordinary blind crustaceans of the subterranean waters of this region (Asellus stygius and Crangonyx mucronatus), I found three living examples of the same worm as that received from the well ten years before, and these proved upon examination to belong unquestionably to the genus Phreoryctes, but to a species undescribed. From the other Oligocheta the family Phreoryctide and its sole genus, Phreoryctes, are distinguished by the long and slender form, the great number of segments, the thick cuticle and weak longitudinal muscular layer; by the simple sete, placed singly in four longitudinal rows, two ventral and two dorsal (the latter sometimes aborted); and by the convoluted nephridia imbedded in fat cells and opening to the surface be- fore or behind the set. The ventral ganglia present two swellings or enlargements in each somite. The sexual glands are said to occur in segments nine to twelve, and the receptacula seminis in segments six to eight. Phreoryctes emissarius, Forbes.* This worm is allied to P. menkeanus by its great length, its pale red color and iridescent luster, and its subterranean habit, by the presence of ventral organs beneath the nerve cord, and by the three pairs of nerves from each ventral gan- glion. It differs especially by the fact that the dorsal rows of sete are obsolete except on a variable number of the anterior segments} and that the lateral vascular arches extend from the dorsal to the ventral vessel, instead of connecting only with the latter. The worm is at least seven or eight inches in length © by about .6 to .7 mm. in thickness, and my longest specimen (an imperfect one) contains three hundred and seventy-five segments. i The head or prostomium is not transversely lobed, either without or within, and thin vertical transverse sections give no hint of a cephalic pore. The setz (PI1.VI., Figs. 1 & 2) be- gin with very small dorsal and ventral pairs in the first post-oral * Amer, Nat. May, 1890, v. xxiv., p. 477. + None of my specimens are entire, and I am not able to give the characters of the posterior segments. An American Earthworm of the Family Phreoryctide. 109 segment. The ventral set continue throughout the body, at first increasing in size backwards, and becoming very large and long and strongly recurved at tip. At the middle of the worm the imbedded part of the seta may extend into the ccelom two thirds the diameter of the body. The tips are obtuse and smooth, and a circular ridge surrounds the seta below the middle. The inserted portion is straight to the tip, from which very numerous distinct slender muscles radiate in all directions to the worms wall. The dorsal setz diminish in size and disappear between the seventieth and eightieth segments, their occurrence becom- ing irregular towards the last. In the middle part of the body there is no trace of them nor of the glands for their de- velopment. The large dorsal and subintestinal blood vessels are readily seen in the living worm, as well as the contorted vascular - loops extending along the side of the intestine. The dorsal vessel is contractile, and valved at the posterior portion of each ccelomic space by four or five large, pale, nucleated cells, so shaped and attached as to yield to forward pressure but to close against backward. (P1.VI., Fig. 3). This vessel di- vides just behind the cerebral ganglion, each branch passing outward and downward under the anterior end of the lateral commissure, and then forward under the lateral part of the ce- phalic ganglion, and upward and inward to the middle line in front of this ganglion, where the two branches from the oppo- site sides nearly tuuch. Hach then turns directly backward upon itself and retraces the course just described, the direct and the recurrent portions of the artery running parallel, a short dis- tance apart, until beneath the anterior end of the commissure again, where the vessel turns outward to the body wall. The lateral branches of the dorsal vessel (P1.VL., Fig. 4) are given off immediately in front of the posterior dissepiment of each somite, and just behind the valves of the dorsal vessel. Throughout the greater part of the body they run at first up- ward and outward to the body wall, then irregularly forward (forming as they go a broad, downward loop on the side of the intestine) to the front of the coelomic space, where they turn directly downward across the intestine, and backward along its lower surface, again forming a broad, downward loop in the 110 Illinois State Laboratory of Natural History. ventral portion of the ccelom, in front of the ventral sete. They terminate finally in the ventral vessel, on the same verti- cal plane as that of their origin. The anterior arches are less contorted,— the first, indeed, pursuing a nearly direct course from above downward. This vessel is no larger than the others, and is doubtless non-contractile. It is given off at the posterior end of the first segment (subcesophageal ), and on the same ver- tical plane the ventral vessel takes its origin,— probably formed by the union of these arches. This vessel is supported by a vertical mesentery except in the anterior segments, where it is borne at the middle of a delicate transverse membranous par- tition, which disappears with the formation of the first dissepi- ment. It is also valved, but imperfectly, at a considerable distance behind the dissepiment. The cerebral ganglion is transverse, slightly convex in front, and slightly three-lobed, the large anterior nerves going off from the anterior lateral angles by bulbous processes. an- glion cells are most abundant on the anterior and dorsal sur- faces, the inferior posterior surface being nearly free of them. Three pairs of nerves arise from the cephalic ganglion, the first and second large and the third small. The first go outward and downward from their origin to the cephalic wall; the second, arising just behind the first, pass directly downward ; and the third. springing from the lateral part of the dorsal sur- face just before the origin of the commissure, pass directly up- ward. The commissures send each five nerves to the wall of the head, the four anterior arising in pairs, and the posterior and largest, given off just before the commissures meet in the sabcesophageal ganglion, going singly outward. No branches to the pharynx were detected. | The subcesophageal ganglion is transversely oval in front, nearly cylindrical behind, very richly cellular on the lower sur- face, especially at the middle, and also posteriorly on the sides. The four anterior ventral ganglia are closely approximated and, including the subcesophageal, have but a single pair of branches each. The ventral cord (Pl. VI, Fig. 5, & Pl. VIL, Figs. 6 & 7) generally presents two elongate ganglionic swellings to each somite, corresponding to the two sets of lateral nerves arising. An American Earthworm of the Family Phreoryctide. 111 Ganglion cells are but few on the upper half of the cord, but are almost continuously distributed on the under surface except at the dissepiments, where the cord is rapidly reduced in size and contains no ganglion cells. There is uothing in the nerve cord or its delicate sheath to represent the giant fibers of the earthworm. The ventral cord is supported beneath, at the center of each somite, between the ganglionic swellings, by the ‘ ventral or- gans ” of Timm (PI. VI., Fig. 5, & Pl. VIL. Figs. 6 & 7),#—pyra- midal pads or cushions of cells, the outer ones large, distinct, nucleated, the inner resembling the ganglion cells of the nerve cord itself. The apex of the pyramid extends between the longi- tudinal muscle bands, and the base of it commonly supports the cord, the lateral angles frequently extending upwards, beside the cord, and sometimes, especially in the anterior somites, | half surrounding it (Pl. VIL, Fig.6). In the posterior part of the body, however, the cord and the ventral organs are much less closely connected, and often lie side by side quite free from one another. These cellular masses are longest from before backwards, and are connected with each other by a single nerve fiber running from one to the other, this having occasionally a nucleated cell in its course. The lateral nerves (Pl. VI, Fig. 5) all pass from their origin outwards and downwards through the longitudinal mus- cular layer of the body wall to the circular muscle, beneath which they are distributed. They are swollen and slightly gan- glionated just beyond their origin. Three pairs of these lateral nerves rise in each somite (excepting a few of the most ante- rior), two from the posterior swelling of the ganglion and one from the anterior. The posterior pair arise immediately in front of the dissepiment, the second pair a short distance fur- ther forward,—commonly immediately behind the ventral organ,— and the first pair (which pass directly downward) at about the anterior fourth uf the somite. These nerves are given off on the same Horizontal plane, and the ‘pairs are SppUEitS. * The aS of these bodies, as well as their greater size in the anterior segments, seems to me to bear out the suggestion of Timm that they are sensory organs. 112 Tilinois State Laboratory of Natural History. The nephridia open into the ccelom by a conspicuous broad, ; shallow, bi-lobed, ciliated funnel (PI. VIL, Figs.8&9) nearly sessile on the anterior face of the dissepiment at about the level of the nerve cord. The larger lobe of the funnel is composed of a single layer of cylindrical cells arranged fan-like, and each covered at its outer end by a dense brush of long and very fine- cilia. From this funnel a short tube narrows rapidly backward to the dissepiment, through which it is continued into a narrow lobe of the so-called fatty body of the somite behind (PI1.VIL., Fig. 10). These bodies, composed of irregular masses of large cells, contain, according to Leydig,* delicate contorted tubes representing the glandular portion of the nephridia,—a fact difficult to demonstrate positively in prepared slides. They extend upwards beside the alimentary canal, in immediate prox- imity to the chlorogon layer, their upper end sometimes reach- ing the dorsal vessel. Below, a slender lobe extending down- wards and inwards is supported by one of the setal muscles, which is inserted on the middle line of the ventral body wall. Another lobe extending downwards and outwards, contains the large excretory duct, which passes from the dorsal surface of the intestine with an S-like curve to the body wall (Pl. VL, Fig. 2), where it is rapidly narrowed to a minute tube, which, passing through the body wall, opens, with a slightly expanded orifice, upon the surface about a tenth of a millimeter in front of the seta and quite outside the setal sheath. This orifice, in - the living worm, is frequently marked by little accumulations of excrete matter, and the tube can be traced a short distance inward by the thick cuticular lining of its terminal part. The first nephridium .appears in the ninth segment, and the first ciliated funnel in the eighth. TheSe structures are, however, rudimentary in the first six segments in which they occur, the fatty bodies being reduced to narrow masses of connective- tissue nuclei which extend up in a single band beside the ali- mentary canal, immediately behind the dissepiment, and the funnel not being bi-lobed and not always ciliated. No ductor external opening is distinguishable in these anterior nephridia.t * Archiv f. Mikrosk. Anat. L, p. 283. ae, + The segments in which these incomplete nephridia occur, are, according to Beddard, those in which the sexual organs are situated in the sexually mature worm. , An American Earthworm of the Family Phreoryctide. 113 The change to the distinctive cell of the fatty body and the fully developed bi-lobed, ciliated funnel is gradual, becoming complete in the fifteenth segment, where, however, the fatty bodies are still very small, occupying only the anterior part of the celom. In the posterior somites, on the otner hand, the nephridia and the fatty bodies are very large, occupying the greater part of the coelomic space. There was no trace of sex- ual organs in any of the specimens studied. Just behind the tip of each seta is a small oval mass of cells resembling a gland (PI. VI., Fig. 2) and opening to the surface at the very margin of the setal sheath. The first dis- sepiment occurs between the fourth and fifth segments. The coelomic fluid is remarkably destitute of leucocytes. The pharynx is short, thick-walled, with heavy roughened cuticle, thick, circular and rather few and stout radiating mus- cles. A broad, low median ridge projects fromthe dorsal wall of this cavity. The cesophagus extends through segments one to three. It is thin-walled in the first two somites, with a thin cuticular lining and scarcely any circular muscular fibers, but very numerous slender radiating muscles extending to the body wall. In the third somite its structure is similar, except that it is provided with a very thick circular muscle and that the radiating muscles are first reduced in number and then disap- pear. The cuticle is also thicker than that of the preceding part. With the fifth somite the intestine suddenly begins, the muscular wall becoming very thin and the epithelial cells very long and highly and irregularly villose in arrangement (PI. VII., Fig. 11). Here also begin the chlorogon cells in a thin imperfect layer. The villosities become at first more prominent and irregular backwards, but at about the fifteenth to the twen- tieth segment are gradually reduced in length, the epithelial lining becoming more uniform in thickness. The intestine is slightly constricted at the dissepiments, and there also the epithelial cells are considerably shortened (PI. VIII., Fig. 12). The exposed ends of the cells are densely ciliated. The intes- tinal wall contains capacious blood sinuses which connect at intervals with the dorsal vessel (Pl. VIII., Fig. 12). In the posterior part of the alimentary canal the epithelial cells are very much elongated, and the lumen of the canal small. 114 Illinois State Laboratory of Natural History. The chlorogon layer becomes finally thick and extensive, deeply imbedding the alimentary canal and the dorsal vessel, and extending out upon the branches of the latter as far as the body wall. , In the alimentary canal of the specimens examined were numerous slender, fusiform, monocystid Gregarinide (Pl. VIIL., Fig. 14), average examples being about .34 mm. long by .02 mm. wide, tapering towards both ends, the anterior extremity with an apparent open pore or sucker by means of which it was commonly adherent to an epithelial cell. In one such case the protoplasmic contents of such a cell were drawn out, by the slight withdrawal of the gregarinid, into a short, thick, striated thread. Each has a large, circular, highly granular nucleus, commonly near the center. In some cases these Gregarinidz were in masses of half a dozen. In the cclom are numerous encysted parasites (Pl. VIII., Fig. 15), usually thick-walled, with a central protoplasmic mass (varying from spherical to crescentic ), within which is aspher- ical, conspicuous, highly granular nucleus, often containing a nucleolus also. These bodies are commonly attached to the inner surface of the longitudinal muscle layer, but are occa- sionally imbedded in the fatty bodies or lie free in the celom. BIBLIOGRAPHY. HOFFMEISTER, W. Beitriige zur Kenntniss deutcher Land- anneliden. — Wiegmann’s Archiv fiir Naturgeschichte, 1848, Bd. I., pp. 183-198. ~ Die bis jetz bekannten Arten aus der Familie der Regenwiirmer. Braunschweig, 1845. SCHLOTTHAUBER, DR. bBeitriige zur Heiminthologie. (‘‘Amtl. Ber. iiber 31 Versammlung deutscher Natur- forscher und Artze zu. Gottingen, Sept. 1854. Gottin- gen, 1866, pp. 122-124.”) [Vejdovsky. ] | An American Earthworm of the Family Phreoryctidw. 115 CLAPAREDE, E. R. Recherches sur l’Anatomie d’Oligo- chétes. Mém. Soc. Phys. et hist. nat. Genéve, Tom. XVI. 2-de part. 1862, Pl. 1-4, pp. 217-291. LEYDIG, Fr. Ueber Phreoryctes Menkeanus Hoffm. nebst Bemerkungen iiber den Bau anderer Anneliden. Archiv fiir Mikroskopische Anatomie, Bd. I. 1865, pp. 249-294, Taf. 16-18. Nouu, F. C. Ueber einen neuen Ringelwurm des Rheins. Wiegmann’s Archiv fiir Naturgeschichte, Jahrg. 40, 1874, pp. 266-270, Taf. VII. VEJDOVSKY, F. Beitraige zur Oligochaetenfauna Bohmens, Sitzungsber. d. kén. béhm. Gesellschaft der Wissensch. Prag. 1875, pp. 191-201. CLAUS, CARL. Grundziige der Zoologie, Vierte Ausgabe. Marburg, 1880. MICHAELSEN, W. Die Oligochaeten von Siid-Georgien nach der Ausbeute der Deutschen Station von 1882-83. Jahrb. Wiss. Anst. Hamburg, 5 Jahrg, pp. 55-73, Taf. 1,2. Abstract: Zoologischer Jahresbericht, 1888, p. 51, Verm. TImMM, RuD. Beobachtungen an Phreoryctes Menkeanus Hoffm. und Nais. Ein Beitrag zur Kenntnis der Fauna Unterfrankens. Arbeiten des zoolog.-zootom. Inst. in Wurzburg, Bd. VI. (1883), Taf. I, Il. Review: Zoo- logischer Jahresbericht, 1883, I Abth., p. 203. VEJDOVSEY, F. System und Morphologie der Oligochae- ten. Bearbeitet im Auftrage des Comité’s fir Natur- historische Landesdurchforschung Béhmens. Prag. 1884, pp. 48-50. Abstract: Zoologischer Jahresbericht, 1885, I Abth. Nachtr., pp. 47-57. MINOT, C.S. Vermes. Order I. Oligochewta. Standard Na- tural History, Vol. L. [1885], p. 223. GIARD, ALFR. Sur une nouvelle station de Phreoryctes Menkeanus Hoffmeister. Bull. Scientif. France et Belg. (3) 1. Ann. No. 4 [1888], p. 298. 116 Illinois State Laboratory of Natural History. BEDDARD, F. E. On the Reproductive Organs of Phre- oryctes. Ann. Mag. Nat. Hist., Ser. 6, Vol. I., No. 6 [ June, 1888], pp. 389-395, 1 Pl. Abstracts: Jour. Roy. Micr. Soc. 1888, p. 579; Zoologischer dei s 1888, p. 64, Verm. Anatomy and Histology of Phreoryctes. Abstract : Jour. Roy. Micr. Soc. 1889, Part 6, p. 755. (Proc. Roy. Soe. Edinburgh, Vol. XVI, 1888-89, pp. 117-119). FORBES,S. A. Note on an American Species of Phreoryctes. American Naturalist, May, 1890 [Vol. XXIV.], p. 477. EXPLANATION OF PLATES. PLATE VI. Fia. 1.— Ventral seta detached. X 120. Fig. 2.— Ventral seta in its sac, with problematical gland (?) just behind its tip, and terminal portion of duct of nephridium in front. X 192. Fia. 3.— Valves of dorsal vessel. X 328. Fig. 4.—Diagram showing course of lateral vascular arches, and position of valves. X 36. Fie. 5.—Ventral nerve cord in one somite, with ventral organ ~ and lateral nerves. The figure shows also the thick longitudinal ven- tral muscle, the thin circular muscle layer, the hypodermis, and the cuticle. 200. PLATE VII. Fia. 6.—Transverse section of nerve cord and ventral organ from anterior part of body, showing also portion of ventral longitudinal muscle, circular muscle layer, hypodermis, and cuticle. X 192. Fia. 7—Same as Fia. 6, but from central part of body. 192. Fia. 8.—Ciliated funnel of nephridium, and portion of anterior lobe of fatty body, with septum intervening. X 328. Fie. 9.—Front view of ciliated funnel of nephridium. X 328. Fig. 10.—Diagram showing form and position of fatty bodies. X 43. Fig. il.—Transverse section of alimentary canal and dorsal and ventral vessels, a short distance behind cesophagus. The outer cells form the chlorogon layer. X 192. PLATE VIII. Fia. 12.—Same as Fia. 11, but from central part of body. 192. Fia. 13.—Portion of wall of alimentary canal. 328. Fic. 14.—Gregarin,—one attached to wall of intestine. 192. Fie, 15,—Single-celled parasites from clom. 328. arTei "| HACE rie Pas + Cee! VF page Shi ees ny yitye Freae Phy hs: Lie; Pik Pig val ae ah ‘abhi Rie car a Ne oa Ol Uo PLATE YVIt. FIG. 6. FIG. 7. Fig. 10. ee 9 x tae ES PLATE VIII. , Sp ae a —— Tap =a oe] 2 + A = : dain ANG I, Vaim.\ve/ @) VI R\S ig 5 BID) ¢ \ /}} / // \ HH] } ee nee WH} \\\ I HPL] 13, FIG. Fia. 12. FIG. 14. ARTICLE VIII.—An American Terrestrial Leech. By 8. A. ForBES. Our common land leech was first obtained by me in April, 1876, at Normal, McLean County, Illinois, where it was dug up in a house garden, about a dozen rods from the nearest rivulet. An example sent the following year to Prof. A. EK. Verrill, with some remarks on its superficial characters, was by him iden- tified provisionally and with some hesitation as his Semiscolex grandis, originally described* from three aquatic individuals obtained from Lake Huron, Lake Superior, and West River, Connecticut. I have now, however, fifty-six specimens of this leech, all from the earth in Central Illinois, some of them half a mile or more from water, and representing collections made — at different times from April, 1876, to June, 1890; while, on the other hand, it has not once occurred in the course of a large amount of aquatic work done in the same regions during these fifteen years. . It has, moreover, constant characters which clearly distinguish it from Semiscolex grandis, as far as one may judge by a comparison with Verrill’s description, and I do not doubt that it is distinct. Its only known food is earthworms of various genera, and these it swallows entire, as I have repeatedly found by dissec- tion, and demonstrated likewise by feeding experiments on leeches in captivity. From the fact that all my specimens were obtained during the early months of the year,—from March to June,—it is probable that this leech, like the earthworm, penetrates to considerable depths during the midsummer drouths. DIAGNOSIS. Semiscolex terrestris, Forbes.t This is one of the largest of our leeches, my contracted alcoholic specimens reaching a * Synopsis of the North American Fresh-Water Leeches. By A. E. Verrill. U.S. Commission of Fish and Fisheries. Part II. Report of the Commissioner for 1872 and 1873, p. 672. + American Naturalist, vol. xxiv., 1890. 120 Illinois State Laboratory of Natural History. length of seven inches, a width of three fourths and a depth of three eighths of an inch. In form, it is heaviest pos- teriorly, being widest at about the eighth annulus, in front of the acetabulum, but tapering very gradually or scarcely at all thence forward to the anterior fourth, and thence more rapidly to the mouth. Its transverse section is depressed oval, flattened beneath, the margins of the body obtuse. The color is sooty drab, varying to plumbeous black, some- what lighter beneath, uniform in tint, and quite without spots or mottlings of any sort. A darker median longitudinal stripe, very conspicuous and well defined, is almost invariably present ; a paler marginal stripe often approaching buff, little less con- stantly so; and a ventral submarginal stripe of the same color | as the median dorsal one likewise quite frequent. The surface is everywhere smooth, and I find no external trace of segmental papillee. There are ninety-nine complete annuli from the mouth to the posterior sucker, four imperfect annuli in the cephalic lobe (counting the one bearing the first pair of eyes as the first), and one such just before the vent — one hundred and four in all. All the perfect annuli are very distinct except the first two, which, while well distinguished dorsally, are almost, but not quite, fused beneath to form the posterior border of the mouth. In front of the first annulus is the upper lip, divided by a delicate median groove. There are, consequently, eleven such grooves meeting the margin of the mouth, its posterior boundary being formed by the undivided ventral portion of the fifth annulus. The eyes are ten in number, placed upon the first, second, third, fifth, and eighth annuli, representing somites one to five. The acetabulum is broad oval, wider than long, and measures about 10 mm. in its greatest diameter. The vent is large and surrounded by irregular radiating grooves. The first nephridial pore is at the anterior margin of the tenth complete annulus,— the fourteenth in all,—and the last or seventeenth pore at the anterior margin of the ninetieth vent- ral annulus,— the ninety-fourth of the full series. These pores open on the ventral surface just within the dark ventral line, and consequently at some little distance from the margin of the body. The male sexual opening is on the posterior part of the _ An American Terrestrial Leech. 121 twenty-eighth entire annulus and the female opening on the thirty-third. Within the buccal cavity is a prominent circular fold. Maxille three, minute, .5 mm. to .66 mm. in length, each with an armature of twelve to fifteen bicuspid teeth. The pharynx presents ten to fifteen longitudinal folds, the number varying in different parts, with an average of twelve or thirteen. I have seen no specimens of Semiscolex grandis, Verrill, but draw from the author’s description distinctions in the number of the annulations ( “about ninety” in grandis ), the presence of maxille, the positions of the sexual orifices (in grandis in the twenty-fifth and thirtieth annuli respectively), and in the color markings,— grandis being, in Verrill’s speci- mens, without stripes, but spotted or blotched with dark. ANATOMICAL NOTES. The genus Semiscolex, to which this species unquestionably belongs, was described by Kinberg* in 1867, but has been since very little discussed. It is not, in fact, again referred to in any literature within my reach, except by Verrill, in the third volume of the American Journal of Science (1872) p. 136, and in the Report of the U.S. Fish Commissioner for 1872 and 1873, p. 671. It is clearly closely allied to Aulastoma, Moqu., and seems to me but doubtfully distinct. The following anatomical details will help to an understanding of the rela- tions of our species : The alimentary canal is clearly distinguishable into five regions. The first is the pharynx (closely invested by muscles), which extends to about the twenty-second annulus from the mouth. The second is the so-called cesophagus and proventric- ulus, a simple cylindrical tube without lateral sacculi, ter- minating opposite the fourteenth ventral ganglion (counting the subcesophageal as the first), where it gives off two long, slender sacculi which extend backward beside the alimentary canal to the last testis. At the point of origin of these sacculi, the canal becomes very much enlarged, the three remaining * Ofversigt af Kongl. Vet. Akad. Forhandlingar, xxiii, p. 357. 122 Illinois State Laboratory of Natural History. divisions being of nearly equal length. The third region, the digestive stomach of Bourne, is large and thin-walled, its cavity presenting about four regular constrictions, and its mucous membrane being conspicuously and finely rugose. The next section, the intestine proper, is smaller, with minute, irregular, and much less conspicuous rugosities ; while the last section, the rectum, is about the diameter of the stomach, with a smooth mucous membrane. It passes backward without nar- rowing, rapidly rounding directly into the large anus. The testes are ten in number in the specimens examined. The penial sheath is very long, extending from opposite the seventh ventral ganglion (where it is surrounded by the glandula prostatica) backward to a point opposite the ninth ganglion. Here it bends abruptly forward upon itself and passes to its external opening beneath the sixth ganglion. Immediately in front of the glandula prostatica lies the glandular part of the seminal vesicle of the left side, that of the other side being just opposite. Forward from this runs the thick-walled, shining ductus ejaculatorius, continued pos- teriorly as a slender, somewhat contorted tube which meets its fellow of the right side as this comes under the nerve cord just behind the sixth ganglion, the two then running in company to the base of the penial sheath. The ovaries are small, nearly spherical, and lie closely approximated on each side of the nerve cord, immediately be- hind the seventh ganglion. The common oviduct passes first through a pyriform glandula albuginea, the apex of which reaches backward to the eighth ganglion, and then, at first small but presently much enlarged, rans backward somewhat deviously to the ninth ganglion, where it turns directly forward and continues unchanged to its orifice. The subcesophageal ganglion is closely approximated to the next behind, the second and third ganglia are about half as far apart as the third and fourth, and these about two thirds the distance of the fourth and fifth. The last four ganglia are likewise much approximated, the posterior one being very large, and sending off several pairs of branches. Articte IX.—A Preliminary Report on the Animals of the | Mississippi Bottoms near Quincy, Illinois,in August, 1888. Partl. By H. Garman. THE LOCALITY. The peculiar features of the waters examined while with _ the Fish Commission at Quincy, in August, 1888, are reflected in the character of the collections taken from them. The locality is not one which would be selected by the naturalist as likely to yield a great variety of species. The waters are _ too much alike and are too much at the mercy of the Missis- sippi River for that. It is a locality, however, that is eminently characteristic of the Mississippi Valley, and one that is calcu- _ lated to yield a fauna equally characteristic of certain influ- ences which the great stream exerts upon its denizens. The flood-ground of the Mississippi River at Quincy will _ average six miles in width from bluff to bluff and extends very nearly north and south. The river reaches the bluff on the _ Missouri side at the village of LaGrange, nine miles northwest of Quincy. From LaGrange it flows southeast in a direct course to the bluffs upon which Quincy stands. As this part of the river is but little more than a mile in width, it will be seen _ that extensive bottom-lands must lie on both sides of it between _ LaGrange and Quincy. On the Missouri side these bottoms form an extended and continuous body of land,—all wooded except the upper part, which is known as Lone Tree Prairie. a It is to the forest bottom-lands on the Illinois side north- _ west of Quincy that we wish to call especial attention, since it was upon them that most of our work with the Fish Commis- _ sion was done. Unlike the Lone Tree Prairie region, they are eut up by channels into numerous separate bodies of land, upon some of which the water rises in spring, and leaves, as it _subsiles, numbers of lakes and ponds, some permanent, others _ transient. Opposite LaGrange some of these tracts are per- 124 Illinois State Laboratory of Natural History. manently detached from the main-land and form a group of large forest-covered islands. Including the channels between these islands, the river here has the unusual width of nearly three miles. Between the islands and the bluff is a fertile bottom-land, now protected from inundation by the Indian Grave levee. From this, the widest part, the Illinois bottoms become gradually narrower towards Quincy, just as those of the Missouri side do towards LaGrange, and terminate in a point known locally as the “ tow-head.” All of the lower part is with- out levee protection and is separated from the neighboring bluff by Quincey Bay, a narrow inlet which opens to the river at the tow-head, and extends thence northward close along the bluff for about three miles. THE RIVER. As has been said, the river averages about one mile in width. While the general course between LaGrange and Quincy is nearly direct, the low-water channel makes several bends. It runs along the face of the bluff at LaGrange, then turns southeast, at length reaching the [llinois side close to the south end of the LaGrange group of islands, and strikes the Illinois bottom-land about three miles north of Quincy, cutting down the banks vertically, undermining and carrying away the trees and threatening even to cut across tothe bay. It then turns toward the Missouri side again and reaches it two miles below. Thence it is deflected towards Illinois, and passing close along the south end of the tow-head, follows the bluff along the lower part of Quincy. It flows at the rate of three miles an hour. These bends in the low-water channel are not specially noticeable to the landsman at high water, since the river then fills its whole bed. In the latter part of summer, dur- ing most seasons, the water subsides to such an extent that a good deal of the extensive sand-bar which has accumulated in each bend becomes exposed, and the river is confined to its low water channel. One such bar occurs in the bend west of the lower end of the Illinois bottom-land, and another on the Missouri side opposite the point at which the current strikes the same bottom-land above. In the river proper no serious work was attempted, because of the protracted high water due Animals of the Mississippi Bottoms near Quincy. — 125 to heavy falls of rain in early summer. This was going down when we reached Quincy in the latter part of July, and the sand-bars in the bends began to appear soon after ; but in Au- gust heavy rains in the northwest caused a rise which again covered them. This condition of the river had a decided influ- ence on the abundance and variety of animals, both in the lakes and sloughs and in the river itself. It will be referred to again. BEAR CREEK. This stream winds down through all the northern part of the Lllinois bottom-land, and after giving off several branch- es to the Mississippi River on the west, reaches the upper part of Quincey Bay, into which it formerly opened. At present the © building of the Indian Grave levee across it, a short dis- tanee within this mouth, has closed the outlet, and the only water discharged into the bay passes through a sluice- gate. The lower part of the creek is now, therefore, little more than a slough. This was well filled with water when ex- amined, and a small stream issued from a break which, during a recent inundation, it had made in the levee. The banks are steep, as a rule, as would be expected from the alluvial charac- ter of the soil through which the channel is cut. The shores are commonly wooded, and originally, doubtless, the whole of the neighboring region was covered with forest. The bot- tom is extremely muddy, and from the abundance of snags and brush lodged in its channel and its stagnant water, it is not an inviting collecting ground for the naturalist. BALLARD SLOUGH. This is a channel which has been cut obliquely across from the Mississippi River to Bear Creek, reaching the latter about a mile and a half northwest of the point at which the levee crosses the creek. Its river end, covered by the levee, is a half mile further north, and the length of the slough is probably not far from one and a half miles. It was, when visited, quite Shallow and extremely muddy, and varied greatly in width at different portions, sometimes expanding into pools of consid- 126 Illinois State Laborarory of Natural History. erable extent, and again contracting to fifteen or twenty feet in width. It was not continuous at this time, and probably dur- ing most seasons dries up in great part before the .close of summer. HARKNESS SLOUGH. Harkness Slough is a channel which extends almost exact- ly parallel with Ballard Slough, and lies a quarter of a mile further south. It is very narrow,—not fifty feet across in much of the lower part of its course; has steep banks ; forms some rather deep pools ; and is, like Ballard Slough, extremely muddy. A dense growth of trees lines its banks. It was continuous as far as followed towards the Mississippi River (al- though greatly reduced at some points), and, judging from the current, was doubtless yet connected with the river. Still there can be no doubt that it commonly dries up largely in summer. GOOSE LAKE. An eighth of a mile south of the outlet of Harkness Slough into Bear Creek, is a wide opening on the east into Goose Lake,— an open sheet of water, from the shores of which much of the forest has been removed. It becomes shallower and its bottom more sandy towards its south end, from which a channel ex- tends which formerly put it into communication with the bay, three quarters of a mile below. LIBBY LAKE. This name was given me by one of the fishermen for a long, narrow pool on the west side of Bear Creek about mid- way between the outlet of Goose Lake and the Bear Creek sluice-gate. It isnot named on any map at hand. It was in some respects very different from any other water in which col- lections were made. The water was auite deep, and, for the situation, unusually clear and cool, and gave promise of a growth of aquatic and sub-aquatic vegetation at the edges later in the season. It is scantily edged with willow and button bush and a few other trees and shrubs. Animals of the Mississippi Bottoms near Quincy. — 127 QUINCY BAY. The four bodies of water just described are within the levee. Quincy Bay extends from the levee where this reaches the [llinois bluff (about three miles and a half north of Quincy) directly southward along the foot of the bluff to the tow-head opposite the center of the city, at which point it opens to the river. It varies little in width and will average perhaps a third of a mile. It is little more than an inlet of the Mississippi con- taining back-water during the latter part of the year, the water in much of it becoming then very shallow and the current al- most disappearing. During the month spent at Quincy this year, the water did not reach its usual low stage, and the cur- rent due to waters received from Bear Creek, and the sloughs, creeks, and springs, was sufficient to keep the bay quite clear . of the alge which would otherwise have appeared upon it. Its bottom is commonly muddy and no promise of other aquatic vegetation could be seen in it. It is edged with woods quite continuously on the west, and on the east also there is some growth of forest where the strip of level soil between the bay and the bluff gives room for it. WILLOW SLOUGH. This narrow channel extends obliquely across from the river to the bay outside of and parallel with the levee. It en- ters the bay about one and two thirds miles above the south end of the tow-head, and leaves the river a little over four miles north of the same point. Its length is about two and two thirds miles. At high water a current from the river sweeps through and reaches the bay; but at the time it was seen but little water ran out; and in the lower part of its course it consisted of stretches of water connected by narrow rivulets. Some of the pools were of considerable depth. The bottom is commonly muddy, but occasional beds of sand occur. There was no vegetation. WOOD SLOUGH. Wood Slough is also a narrow channel extending oblique- ly across the lower part of the Illinois bottom-land from river 128 Illinois State Laboratory of Natural History. to bay. It formerly entered the bay opposite the north end of Quincy, but the building of an embankmeut for a railroad bridge cut it off from this outlet so that it now turns west at its lower end and, running along the embankment, empties in- to the river again. Throughout its course it is very nearly parallel with the west shore of the bottom-land, in some cases being only a few rods away from the river. The river enters it four miles northwest of Quincy, and a mile and a half below this it breaks through the bank to the river again, so that at low water its lower part may not be continuous with the rest. It is perhaps three and a half miles long,—a narrow, muddy ditch of shallow water, completely devoid of vegetation, and containing such animale only as are so unfortunate as to be en- trapped in it by the subsiding spring floods. CLAUS LAKE. This lake is a small temporary pool in the bottom-land about one fourth mile east of the north division of Wood Slough. It is very shallow,—at no place up to the mens’ waists; has the usual muddy bottom; and lacks vegetation. DEAD MAN'S SLOUGH. Dead Man’s Slough is a name applied by the fishing crew to a shallow, muddy pool in the woods about a quarter of a mile from the river above the north end of Wood Slough. MOSS LAKE. Moss Lake, on the southern part of Long Island, the larg- — est of the LaGrange group, is very similar to the last two in general character, being an isolated pond in the woods. It is, however, much deeper than they, and its water is cooler and clearer. It is surrounded by a growth of hickory, elm, syca- more, and grape. Its length is less than a fourth of a mile, and its width from 150 to 200 feet. No aquatic vegetation was growing in it when it was seined in August. LILY LAKE. Lily Lake is one of a group of three lakes which lie be- tween the lower end of Wood Slough and Quincy Bay. They Animals of the Mississippi Bottoms near Quincy. 129 have a common outlet during the fore part of the summer through Wood Slough. Lily Lake is the smallest of the three, and lies only a few rods from the west shore of the bay. It is an oval pond of shallow water full of the pads of water chin- quepin, and is the only water from which I collected that con- tained a growth of vegetation. It is pretty well protected on the north and west by forest, which probably prevents to some extent the ravages of overflows. LONG LAKE. Long Lake, the second of the group, lies a short distance northwest of the preceding. It is nearly three quarters of a mile long, and is a narrow body of rather deep water surrounded by forest. BROAD LAKE. West of the lower half of Long Lake is the third lake of the group. Itis broad and shallow, and when visited consisted of aseries of detached pools with sloping bottoms of mud so deep as to make it extremely difficult to drag a seine. CEDAR CREEK. This is asmall rapidly flowing creek which comes from the east and, cutting through the bluff, enters the bay half a mile above the city limits. At its mouth it has deposited a large bed of alluvium through which one sinks to his knees in wading. A short distance from the bay it becomes rocky, and between the bluffs and in the upper part of its course flows over almost solid limestone. When visited, it was moderately low, and in places were shallow pools connected with each other by narrow reaches along which the water rushed with considerable speed. The water is quite clear notwithstanding the sewage which it receives ; yet the influence of the latter is seen in the compara- tive scarcity of aquatic life for some distance back of the bluff. OTHER WATERS. The only situations other than those described above, in which collections were made, were a small creek without name just above Quincy, which is similar to Cedar Creek in every re- 130 Illinois State Laboratory of Natural History. pect except its smaller size, and a muddy pond near the bluff at the southern limit of Quincy. It was from the lakes and sloughs thus briefly described that the material was obtained upon which this paper is based. Omitting Cedar Creek, the bay, and the river, they have much in common. All were, or are now, subject to overflow by the Mississippi. Since the Indian Grave levee was built, the waters within it,—Bear Creek, Harkness and Ballard Sloughs, and Libby Lake,—have not commonly been subject to inundation, —a fact which explains certain special features of the collection taken from them. The condition of the pools with reference to the river was not a usual one. A late rise in the river had flooded them after the spring freshets had subsided, and kept open the communication with the river much longer than would other- wise have been, thus helping the large fishes to escape from them after spawning, and doubtless carrying away hosts of the smaller organisms which had appeared in the pools. All have very muddy bottoms. In most, this mud was nearly knee deep, and made seining very difficult and disagreeable. In some places deposits of mud were of such recent origin and were so loose that it was unsafe to venture into them. Aquatic vegeta- tion was almost wholly lacking. A scant growth of filamen- tous alge was occasionaliy seen, but in nothing like the quan- tities in which it occurs in ordinary stagnant or quiet water. In Lily Lake alone there wasarank growth of aquatic vegeta- tion. Here a permanent growth of water lilies ( Nelwinbiwn luteum) had become established, and to the under sides of the lily pads was attached a scant growth of filamentous alge. This absence of vegetation is directly traceable to the overflows, since these disturb the bottoms of the pools, displacing the silt in some places, depositing fresh material in others, and dislodg- ing and carrying away the plants which become established during the intervals between floods. The water was not very deep at this time, but of course varied with the river. It could be waded in most places by the men. It was deepest in the larger pools, such as Long and Broad Lakes, and here the tem- perature was tolerably constant. In the sloughs, where the water was shallow, it often became very warm, and during a : Animals of the Mississippi Bottoms near Quincy. 131 few days of unusually high temperature became at the edge of these so hot as to be scarcely bearable. ANIMAL LIFE.—MAMMAIS AND BIRDS. With this sketch of the surroundings we pass to the ani- mals themselves. Of course mammals were not to be looked for on land so recently covered with water, and no trace of the presence of muskrats, even, was noticed. The raccoon, how- ever, is said to remain on the flooded ground at all times, re- sorting to the trees, and probably often fasting, when sur- rounded by water. These animals were common about the sloughs, as was shown by the prints of feet, and doubtless de- pend to some extent on the fishes and other animals there crowded together. Fishes thrown upon the shore were gener- ally devoured by them before the next morning. In the latter part of August they were plainly depending largely on wild grapes for food. Birds were at no time abundant. A few kingfishers, a solitary green heron, or a couple of spotted sandpipers ( T'rin- goides macularius), were about all that were commonly seen during a day’s work. As the season advanced these became a little more abundant from accessions of migrating birds to their numbers. At one time a flock of about forty white peli- cans appeared for the greater part of a day on the Missouri sand-bar opposite Wood Slough, but were driven away by gun- ners and did not again appear. An occasional troop of cormo- rants was seen, a single blue heron, a dab chick ( Podilymbus podiceps), and two half-grown ducks, one of which was brought in by the seine. When the wild grapes ripened, the bottom- land was invaded by a good many of the smaller birds which were not often seen there before. Among these, robins, red- headed woodpeckers, and blue jays were conspicuous, though I cannot say that the two latter were attracted by the grapes. One other bird deserves mention as, from the numbers in which it occurs, it must have an important influence upon the insect life of the waters. Certain parts of the bluff presented exten- sive vertical surfaces of exposed clay, and bank swallows, in great numbers, had excavated burrows in this for nests. In places these exposed surfaces were honey-combed with the 1382 Illinois State Laboratory of Natural History, burrows. During quiet afternoons and evenings the swallows spent a good deal of time skimming the surface of the water of the neighborhood. Among them was noted occasionally, the white-billed swallow ( T'achycineta bicolor); but most seemed to be the bank”swallow (Clivicola riparia). There can be no doubt that the destruction of winged insects from the water by the hundreds of swallows annually reared in these banks is very great. REPTILES. With one exception, serpents, even of the aquatic kinds, were not seen. I presume they are not able to maintain them- selves on the bottom-land during inundations. A single Regina leberis was seen for several days lurking about fish boxes at the headquarters of the Fish Commission. The absence of vegeta- tion may also have had something to do with the absence of ser- pents, since they prefer places in which they are not so com- pletely exposed to observation. The locality was certainly calcu- lated to furnish an abundance of food to the fish-eating species. Turtles were present in great numbers. They were espec- ially common in the more retired pools when these were first visited. Subsequent visits showed them in diminished numbers, either from their having migrated, or having learned to avoid the seine by burrowing in the mud. The egg-laying season was apparently past, so that no opportunity offered for study- ing the breeding habits of the species. [am informed that the eggs are sometimes gathered from sandy shores by hun- dreds, and used as food. The following brief list includes most of the species of Chelonia which occur in Illinois. Doubtless some of the other Illinois species will also be found here when the locality is more thoroughly explored. PAINTED TURTLE (Chrysemys belli, Gray). This turtle was rather common in the sloughs, but was not seen elsewhere. Adults are not easily distinguished from the related C. marginata; but I believe none of the latter occurred in the sloughs. Animals of the Mississippi Bottoms near Quincy. 183 Pseudemys elegans, Wied. Frequent in sloughs. Pseudemys troostii, Holbrook. Rare. Three examples from Moss lake, on Long Island, in the river. A strong, irritable species. Mop Turtre (Malacoclemmys lesueuri, Gray). Equally common with the next species and much like it in habit. The two are not discriminated by river men, and are known to them as mud turtles. Observed in most of the sloughs and in the river and bay. Mop Torte ( Malacoclemmys geographicus, Lesueur ). This and the preceding species probably constitute more than half of the turtles which one sees on the partly sub- merged trunks of trees and on sunny banks along the river and sloughs. Scores may be seen on bright days sunning them- selves on the edges of the log rafts in the upper part of the bay. They are not used as food, though it is sometimes claimed that the flesh is palatable. ALLIGATOR SNAPPER (Macrochelys lacertina, Schw. ). This species is said by fisherman and sportsmen to occur here occasionally. Snapperne Turtye (Chelydra serpentina, Linn. ). Occasional in sloughs and lakes. Those taken were large and very fat. It is prized as food. Sort-SHELL TurTLE ( Aspidonectes spinifer, Lesueur ). Abundant in river and not uncommon in the sloughs. Fishermen sell readily those caught in their seines. Sort-SHeLt Turtie ( Amyda mutica, Lesueur ). Common in the river, but less abundant in sloughs than the preceding. Reaches a length of 8 to 10 inches. It is used as food. AMPHIBIANS. Amphibians evidently cannot maintain themselves on these bottom-lands. They were very rare; and probably the few seen had made their way in from the higher land within the 134 I'linois State Laboratory of Natural History. levee. A few half-grown leopard frogs (Rana virescens, Kalm) were taken in the woods under logs, and at the edges of sloughs: One full grown example was taken at the edge of Claus Lake August 10. A single Ff. catesbiana, Shaw, was heard within the levee in Bear Creek. The cricket frog ( Acris gryllus, LeConte) was frequently seen at the edges of the water, but was by no means common. Two young toads about half an inch long were taken at the edge of Lily Lake August 7, and another example 1.25 inch long was taken August 15 at the edge of Willow Slough. The former had probably grown from spawn deposited in the water after the late floods. They were found on the side of the bottom next the bluff. It may be that a few adults succeed in avoiding the current on this side and remain here; but they are certainly rare. Not a sin- gle tadpole was noticed in any of the bottom-land sloughs and lakes; but a few small tadpoles of toads were noted in shallow pools of Cedar Creek. All these amphibians were feeding on terrestrial insects,—chiefly beetles belonging to the families Carabide, Staphylinidew, and Heteroceridw, together with a small fly, and leaf-hoppers of the family Jasside. One cricket frog had eaten a single aquatic larva (the Acilius described be- low). There was little difference in the food of the different species from any one locality. Along Cedar- Creek a small black fly, which was common on moist sand, was eaten largely. FISHES. The fishes taken from the sloughs and lakes of the bot- tom-land at Quincy, may be placed in three groups: creek. fishes, pond or slough fishes, and river fishes. To the creek fishes belong most of the minnows, the sand darters, and the common sucker,—altogether about half as many species as there are in each of the two remaining groups. The individ- uals belonging here were probably less than one per cent. of those taken from the pools. This scarcity was due in some measure to the abundance of predaceous fishes in these waters; but the species of this group taken were mostly suchas are ordin- arily found common in small creeks, and were probably only stragglers from the great body of individuals which live in such streams. Several of the minnows, however, deserve to be Animals of the Mississippi Bottoms near Quincy. 185 placed among river fishes as far as fitness for life in the river is concerned. Such species as Hybopsis amblops, Notropis atherinoides, N. jejunus, and Hyboanathus nuchalis, though oc- curring in small streams, generally prove abundant in our rivers, and are certainly perfectly at home there. I have considered as pond and slough fishes, such as the bull pouts, the top minnows, the two pickerels, the two crop- pies, the several species of sunfishes, the large-mouthed black bass, and the ringed perch. The members of this group were commoner in the sloughs than were those of the preceding group, but were not as abundant in species or individuals as the next. In the lakes and sloughs outside the levee, probably these pond fishes did not constitute more than one fifth of the individuals taken; but inside the levee they composed one half of those taken in all situations. Some of them were evidently breeding in these protected waters, and I do not think any member of the group was doing so in the sloughs of the lower bottom-land. The third and largest group includes river fishes, such as gars, dogfish, channel cat, morgan cat, shovel fish, buffalo, carp, several minnows, the Ohio shad, pike, perch, striped bass, white bass, red-spotted sunfish, and the white perch (Aplodinotus. ) These fishes must have constituted in the neighborhood of four fifths of the individuals in the sloughs and lakes outside the levee. A number of them, notably the hickory shad and the red-mouthed buffalo, occurred there in prodigious numbers. As a rule, these species became gradually less and less common as one went north and away from the river, and accompanying this diminution in the numbers of river fishes was a gradual increase in the numbers of pond fishes. There was, in fact, an overlapping of the two groups in the bottom-land, the river fishes being most abundant in the sloughs near the river, and the pond fishes, within the levee and to the northward. Still, several river fishes were very common inside the levee. Evi- dently not all of the river fishes taken in the sloughs breed there. Such species as the morgan catfish (Leptops), the shovel fish, the minnows, and the red-spotted sunfish ( Lepomis humilis) had probably wandered here from the river during high water and had been confined when the water became low- 136 — ‘Illinois State Laboratory of Natural History. er. Most of the remaining river fishes had, I think, been spawned on the flooded bottoms: The abundant young. of gars, buffalo, carp, hickory shad, pike perch, and white bass in the temporary pools are evidence of this. FamiLty ScLa@NID 2. SHEEPSHEAD, Wurtr Percn, ( Aplodinotus grunniens, Raf.) The young of this fish, varying from 2.50 inches to 4.50 inches in length, were event in most of the sloughs and lakes. These are, in all probability, the young of the season. If smaller ones existed in the sloughs, they would certainly have been captured in the seine used by the Fish Commission (a quarter-inch mesh). This species was more abundant inside the levee than in the pools on the lower part of the bottom- land, and was especially common in inlets along the lower part of Bear Creek and in Goose Lake. On asmall sand bar in Bear Creek, at the mouth of Harkness Slough, more were taken than at any other one place. No specimens longer than 4.50 inches were taken from the sloughs and pools, so far as I know. In the bay and river, large ones were very common; and probably” half of the fishes taken during August with hook-and-line from barges and river banks were of this species. It seems quite at home in the swiftest current of the river, and was caught with minnow bait from banks upon which the current strikes with a force which it would seem no animal could with- stand. The largest example seen would have weighed about one pound. The local name for the fish is perch; and it 1s con- sidered one of the best of food fishes. Localities: Ballard Slough, Harkness Binug Bear Creek, Goose Lake, Quincy Bay, Claus Lake, Willow Slough, Lily . Lake, Broad Lake, Wood Slough, Mississippi River. FAMILY SERRANIDA, Srrirep Bass, YELLOw Bass ( Morone interrupta, Gill), Young were frequent in certain of the sloughs and lakes, but were not seen elsewhere. In the northern part of Broad Lake and in small isolated pools above it, they were quite common. Examples pee vary from 1.75 inch to 4.50 inches in length. Animals of the Mississippi Bottoms near Quincy. — 137 Localities: Ballard Slough, Harkness Slough, Goose Lake, Dead Man’s Slough, Claus Lake, Willow Slough, Lily Lake, Broad Lake. Waite Bass, Rock Bass (Roccus chrysops, Raf. ). This fine species was more abundant than the striped bass, and ranged in a greater variety of situations. I saw it caught from the swiftest current of the river. Only young ranging from 2.50 to 5 inches in length were found in the sloughs. It was nowhere common except in the upper part of Broad Lake and in the pools which had recently been in communication with it. Loealities: Ballard Slough, Bear Creek, Goose Lake, Dead Man’s Slough, Moss Lake, Willow Slough, Long Lake, Broad Lake, Wood Slough. Famity Peroipm. ( PERCH.) Sauaer, Jack SAtmon (Stizostedion canadense, Smith). Young frequent in lakes, varying from 3 to 5 inches in length. No adults seen. Localities: Goose Lake, Claus Lake, Lily Lake, Long Lake, Broad Lake. WaAtt-EYED PIKE (Stizostedion vitreum, Mitch. ). Young frequent in most of the sloughs and lakes ; some- times abundant. Ranged from 2.50 inches to 6 inches in length. Frequently with large, conspicuous, dusky blotches. Localities: Harkness Slough, Goose Lake, Willow Slough, Lily Lake, Long Lake, Broad Lake, Wood Slough. Common Rineep Percu ( Perca flavescens, Mitch. ). Young ringed perch were occasionally seen in the bottom- land lakes. Those captured ranged from 2.75 to 3 inches in length. In Libby Lake, within the levee, these fishes were abundant, — a fact which was noted with surprise, as they had not hitherto been found common in the State away from the northern part. Those taken from this lake differed from the northern lake form in being rounder; and also especially in color. When taken from the water they were almost uniform- ly oliye green above, with white belly. As they died, faint 138 Illinois State Laboratory of Natural History. blackish bars gradually appeared. Mr. Bartlett tells me that he has transplanted perch to this locality,—a fact which probably accounts for the abundance of the fish in Libby Lake. Localities: Libby Lake, Dead Man’s Slough, Long Lake, Broad Lake. Sanp Darter (Ltheostoma jessiv, Jor. & Brayt., var. asprigene, Forbes). Judging by the number of specimens of this little fish taken, it is not common here, although parts of Willow Slough are well suited to it. Four examples, Willow Slough; one large brightly colored example, Broad Lake; one example, Lily Lake. Sanp Darter (Htheostoma phoxocephalum, Nelson). Occasional in Wood Slough. Excepting a single example from Willow Slough, it was not seen elsewhere. BLAcKIS-DED Dartsr (Htheostoma aspro, Cope & Jor.). One small example approaching H. phoxocephalum in colors, was taken in Wood Slough, July 30. Loa Prrcu ( Etheostoma caprodes, Raf. ). This was the most abundant darter collected. It was quite common in Willow Slough, Long Lake, Broad Lake, and Wood Slough. JOHNNY Darter (Etheostoma nigrum, Raf.). An immature example from Willow Slough was the only one seen. Famity CENTRARCHID®. (SUNFISHES). LarGe-MouTHED Brack Bass ( Micropterus salmoides, Lac. ). The young of this bass were moderately common in all the sloughs and creeks. Examples of considerable size were occasionally taken, showing that this species does not neces- sarily leave the sloughs after spawning. One example brought in by the net must have weighed seven pounds or more. The smaller examples, which are of interest as in all probability the young of the season, ranged from 2 to 3 inches in length. Between these and the larger ones were various intermediate sizes representing probably three or four generations. Animals of the Mississippi Bottoms near Quincy. 189 Localities: Ballard Slough, Harkness Slough, Libby Lake, Moss Lake, Dead Man’s Slough, Claus Lake, Willow Slough, mouth of Cedar Creek, Lily Lake, Long Lake, Broad Lake. SMALL-MOUTHED Brack Bass (Micropterus dolomieu, Lac.). A single young specimen 2.12 inches long, was taken in Willow Slough August 7. The locality is somewhat un- usual for this species. It is certainly not common in the water collected from. Mr. Bartlett informs me that it was brought here some time ago by the State Fish Commission. Common SunrisH (Lepomis pallidus, Mitch. ). Rare in the temporary pools, becoming common in the deeper water of Long and Broad Lakes; also quite common within the levee. The youngest examples taken ranged from 1 to 1.75 inch in length. Adults in breeding colors were caught in Long and Libby Lakes. Females contained ova as large as No. 12 shot. An old gentleman who has fished here for years tells me that in the days of the earlier settlers sunfishes, presumably of this species, were sometimes taken that weighed as much as four pounds. Localities: Ballard Slough, Harkness Slough, Libby Lake, Dead Man’s Slough, Moss Lake, Willow Slough, Lily Lake, Long Lake, Broad Lake, Mississippi River. Rep-spotreD SunFIsH (Lepomis humilis, Gir. ). This handsome little fish was quite common in sloughs and lakes,— more abundant than we have found it elsewhere in the State. Very few young were seen, and these were nearly mature. It is quite hardy, as is shown by the water it fre- quents, and may prove a desirable aquarium fish. All the adults taken differed from the descriptions of Drs. Jordan and Gilbert in having the opercular flap with a wide white margin instead of a red one. Immature examples have the opercular flap poorly developed and are marked in the sides with numerous small black dots, while the red of the adult is largely wanting. Localities: Harkness Slough, Goose Lake, Moss Lake, Dead Man’s Slough, Claus Lake, Willow Slough, Long Lake, Broad Lake, Wood Slough, pond at southern limit of Quincy. 2 140 Illinois State Laboratory of Natural History. Rep-ryz, Bur Sporrep Sunrisu (Lepomis cyanellus, Raf.). Two examples about 3.50 long, taken in Goose Lake, Aug. 18, were the only ones seen. WarmoutH, Rep-Eyep Bream (Chenobryttus gulosus, C. & V.). A few young, about 1.50 inch long, were taken in most of the pools. Frequent in Libby Lake and Harkness Slough. Localities: Ballard Slough, Harkness Slough, Libby Lake, Dead Man’s Slough, Claus Lake, Lily Lake, Long Lake, Wood Slough. PaLe Croprre (Pomoxys annularis, Raf.). The pale croppie was more abundant than we have found it elsewhere in the State away from Southern Illinois. This fact is one of a number which our fish fauna yields, illustrating the influence of the Mississippi River in extending the range of southern species northward immediately along its course. Young, from 2.25 to 2.75 inches long, were common ; and be- tween these and the largest taken (8 inches long) were a number of intermediate sizes. The species became a little more abundant in the more northern pools. Localities: Ballard Slough, Harkness Slough, Goose Lake, Libby Lake, Moss Lake, Dead Man’s Slough, Claus Lake, Wil- low Slough, Lily Lake, Long Lake, Broad Lake, sai at southern limit of Quincy. Dark Croprrz, Cattco Bass (Pomorys Some Lae. ). A little more abundant than the preceding species in the sloughs and lakes. specially common in the more northern pools, but very generally distributed. Most of those seen were young, from 1.50 inch to 2 inches long. No adults were seen: from pools outside the levee. Localities: Ballard Slough, Harkness Slough, Goose Lake, Libby Lake, Moss Lake, Claus Lake, Willow Slough, Lily Lake, Long Lake, Broad Lake, Wood Slough, pool at southern limit of Quincy. Famity Esocipm. (PIKEs.) Pike, PickereL (sox lucius, Linn.). This species was not seen in most of the bottom-land sloughs. Probably more work in the pools and lakes within Animals of the Mississippi Bottoms near Quincy. 141 the levee farther north would have shown it common enough. It probably does not often leave its retreats among the vege- tation of quiet water for the current of the river. From Harkness Slough, example 12 inches long; Libby Lake, several examples 8 inches long ; Long Lake, one example ; pool south of Quincy, a half dozen small examples. Lirtte PickEreL (sox vermiculatus, Les.). Not common apparently. Seen only within the levee and in Lily Lake. Harkness Slough, one example; Claus Lake, occasional examples five inches long; Lily Lake, four small examples. Famity ATHERINID2. Labidesthes sieculus, Cope. Probably more common in the sloughs than it seemed to be, as its slenderness permits it to pass through most seines when they are not encumbered with vegetation. The pools are exactly suited to it. One small example, Long Lake; four examples, Broad Lake. Famitry Cyprrnopontip®. (Tor Minnows. ) Brack-sipep Tor Mrnnow (Zygonectes notatus, Raf. ). Frequent and generally distributed, but only a few taken at any one tinfe. Schools of about a half dozen individuals were frequently seen in the bay. Localities: Harkness Slough, Quincy Bay, Willow Slough, Long Lake. Famity CLurripm. (SHAD.) Hickory Suan, Gizzarp SHap (Dorosoma cepedianum, Les. ). The bottom-land sloughs and lakes are pre-eminently the spawning ground of this fish. Young of the year, 1.50 to 2 inches long and still wearing the black shoulder mark, occur in countless numbers. Probably more than half of the in- dividuals taken in the Fish Commission seines during the season are these young shad. The temporary pools on the lower part of the bottom-land were crowded with them. They were less abundant farther back, but were still very common in Libby 142 —_. Lllinois State Laboratory of Natural History. Lake, inside the levee. The adults, on the other hand, were usually scarce; but in the pool south of Quincey both young and adults were commonu,—a fact explained by the situation-of the pool east of a railroad embankment and at a considerable distance from the river. The pool is consequently very early isolated, and the adults which make their way in to spawn are © prevented from escaping. Predaceous fishes confined in the sloughs depend very largely on this shad for sustenance. Localities: Harkness Slough, Libby Lake, Moss Lake, Dead Man’s Slough, Claus Lake, Quincy Bay, Long Lake, Broad Lake, Wood Slough, pool south of Quincy. Ouro Suav (Clupea chrysochloris, Raf. ). Probably not common. The only specimens seen were a half dozen young, 2.62 inches long, from Moss Lake, Long Island, Aug. 14. Famity Cyprinip™. (Mrinnows. ) GoLpEN Surner, Bream (Notemigonus chrysoleucus, Mitch.). Frequent. Abundant in Libby Lake, where examples 5 inches long were seen. Localities: Harkness Slough, Libby Lake, Dead Man’s Slough, Claus Lake, Long Lake, Wood Slough, pool south of Quincy. Hybopsis amblops, Raf. Common in Willow Slough and of large size, some examples measuring 4.5 inches inextreme length. Elsewhere takeh only in Broad Lake and Wood Slough, from each of which one or two examples were obtained. Phenacobius teretulus, Cope. A single example of this variable minnow was taken from. Broad Lake, August 9. Notropis atherinoides, Raf. Not found common except in Moss Lake and in the river. On the sand bars of the latter it is caught in numbers for bait. It was sometimes seen hurrying up stream near the shore against the force of the current. Localities: Moss Lake, Mississippi River, Broad Lake, Long Lake. Animals of the Mississippi Bottoms near Quincy. 148 Notropis jejunus, Forbes. One example, Long Lake; eight examples, Broad Lake. SHINER (Notropis megalops, Raf. ) Rare. Two small examples from Willow Slough, the only ones secured. Spawn Hater ( Notropis hudsonius, Clinton ). Not common. One example each from Goose Lake and Long Lake. Notropis cayuga, Meek. The above name was assigned some time ago by Prof. Gil- bert to numerous examples of a small minnow jn the Illinois State Laboratory collection. Mr. Meek’s description has not been seen, but a comparison of a single example of a fish obtained in Long Lake, with the specimens examined by Prof. Gilbert, shows this to be the same thing. The species bears a superficial resemblance to Notropis heterodon, but has a short, weak mandible, without pigment, and a complete lateral line. Cliola vigilax, Baird and Girard. Frequent in several of the pools. Localities: Willow Slough, Long Lake, Wood Slough. Buiunt-Nosep Minnow ( Pimephales notatus, Raf.). Less common than the preceding. Long Lake, Wood Slough. Strvery Minnow (Hybognathus nuchalis, Ag.). This species was common in the river, where with Noftropis atherinoides, it was taken in numbers for bait. Throughout Cedar Creek, also, it was very abundant, and in the upper part of the stream was the only fish seen. In the sloughs and lakes it was not common. Claus Lake, Willow Slough, Broad Lake, pool south of (Juiney, Cedar Creek, Mississippi River. German Carp (Cyprinus carpio, Linn.). This hardy fish seems destined to become a permanent part of our fauna. Examples of good size were taken on a number of occasions, showing it to be widely distributed among the pools and lakes of the bottom-lands. A single specimen of 144 Illinois State Laboratory of Natural History. the fully-scaled form was taken from Dead Man’s Slough Au- gust 18. The food of an example from Broad Lake consisted of vegetation and mollusks, the former constituting two thirds of the material in the alimentary canal, and consisting of dead leaves and of seeds. The seeds were, as far as could be deter- mined in a hasty examination, chiefly those of trees and weeds. Elm seeds, ragweed seeds and the seeds of Polygonum were noted. The Mollusca were partly thin-shelled clams with an occasional Spherium, and partly snails, such as Physa and Lioplax. All the matter was apparently gathered from the bot- tom. No trace of crustacean or insect food could be detected. Dead Man's Slough, Broad Lake, Quincy Bay, and pool south of Quincy. Faminty CatTostomMipa. (SUCKERS. ) Rep Horse (Moxostoma aureola, Les. ). Rare. Seen only on two occasions. Moss Lake, five examples 5.50 to 6 inches long; Wood Slough. Rep Horsk (Moxostoma macrolepidotum, Les., var. duquesnec). Occasional! young 4.50 to 12 inches long were taken. Localities: Moss Lake, Willow Slough, Long Lake, Broad Lake, Wood Slough. Common Sucker (Catostomus teres, Mitch.). Rare. Those taken were about six inches long. Localities: Moss Lake, Wood Slough, slough south of Quincy. Carp, Rrver Carp (Ictiobus velifer, Raf.). Generally distributed but not very common, and nearly all young. Examples from 3.50 to 7 inches long were taken. Frequent in the slough at south edge of Quincy. Localities: Harkness Slough, Bear Creek, Goose ‘Lake, Moss Lake, Willow Slough, Long Lake, Broad Lake, Wood Slough, pool south of Quincy. Quitt-Back Burrato (Ictiobus bubalus, Raf.). Not observed in any of the bottom-land pools outside the levee, excepting Broad Lake. The young from 3 to 5 inches long were rather common inside the levee. The only large Animals of the Mississippi Bottoms near Quincy. — 145 examples seen were taken from the river, where they seemed to be moderately common. The young are easily distinguished from the young of J. cyprinella by their small, inferior mouth, compressed body, and pale colors,—especially of the pectoral and ventral fins. Localities: Harkness Slough, Bear Creek, Libby Lake, Dead Man’s Slough, Claus Lake, Broad Lake. Moneret Burrato (Ictiobus urus, Ag.). In my field notes I have recorded the young of this fish as occurring in the slough at the south edge of Quincy. They were not seen elsewhere. Adults were common in the river, and were sometimes seen of large size. One was noted August 6 which weighed twenty and a half pounds. Localities: Slough south of Quincy, Mississippi River. Rep-moutH Burrato (Ictiobus cyprinella, C. & V.). Young 4 to 5.75 inches long were extremely common everywhere in sloughs and lakes. They differ from the young of I. bubalus in having a larger mouth, thicker body, and darker colors. The pectoral and ventral fins are blackish, whereas in the case of the quill-back buffalo they are pale. Most of the large buffalo taken from the river were of this species, Localities: Harkness Slough, Bear Creek, Moss Lake, Dead Man’s Slough, Claus Lake, Willow Slough, Long Lake, Broad Lake, Wood Slough, slough south of Quincy, Mississippi River. Famity Srruripa. (CATFISHES. ). Noturus gyrinus, Mitch. Moderately common in sloughs and lakes, Localities: Harkness Slough, Dead Man’s Slough, Willow Lake, Lily Lake, Long Lake, Broad Lake, Wood Slough. Morean Cat, Yettow Cart (Leptops olivaris, Raf.). This catfish was rare in sloughs and lakes. A single ex- ample 10 inches long from Willow Slough was the only one seen from water of this kind. It was abundant in the river, where specimens of ten pounds weight were frequently taken ; and one was noted August 6 that would probably have weighed 18 pounds or more. I am informed that young dog-fish are used on trot lines as bait for this catfish. —————E 146 Illinois State Laboratory of Natural History. BuLi-HEAD (Ameiurus melas, Raf.). The most common of the small catfishes in the sloughs. They seem to be gregarious when young and small schools were occasionally seen swimming slowly along in an aimless fashion in the bay. The examples taken measured from 1.25 to 2.75 inches in length. Adults were not seen. Localities: Claus Lake, Wood Slough, Lily Lake, Long Lake, slough south of Quincy, Quincy Bay. Bury Pout (Ameiurus nebulosus, Les.). Not seen in most of the pools. Frequent and of large size in Dead Man’s Slough. YeLitow Carrisy ( Ameiurus natalis, Les. ). Not common. Those seen were adults. Harkness Slough, one large example ; Moss Lake, several large examples ; slough south of Quincy, a few. Witiow Cat, CHANNEL Cat, Warts Futon (Ictalurus punc- tatus, Raf.) Young 5 to 7 inches long were frequent in some of the sloughs and were quite abundant in Bear Creek. No large ex- amples were seen in the sloughs, but specimens weighing from a half to three quarters of a pound were abundant in the river, as was seen by the numbers caught on trot lines. The young are called “fiddlers” by fishermen. Localities: Bear Creek, Dead Man’s Slough, Willow Slough, Long Lake, Broad Lake, Wood Slough. Famity Amirpa (Doa-FIsu. ) Doa-risu ( Amia calva, Linn.) Young dog-fish were not often seen in the pools outside the levee, but inside they were everywhere common. -.They measured from six to eight inches in length. In Bear Creek they were especially abundant, sometimes sporting at the sur- face in great numbers. Adults were also taken inside the levee. They certainly spawn on flooded bottom-lands in early spring; and I can account for their almost total absence from the temporary pools only by supposing that the young follow the adults into the deeper waters as the bottom-lands become ane Animals of the Mississippi Bottoms near Quincy. 147 exposed. Young a few inches in length are caught by the hundred at times for trot line bait, their desirable quality for this purpose being an extreme hardiness when on the hook. Localities: Ballard Slough, Harkness Slough, Bear Creek, Goose Lake, Dead Man’s Slough, Moss Lake, Willow Slough, Long Lake, Broad Lake. Famity Leprposterp®. (GARs. ) SHORT-NOSED Gar (Lepidosteus platystomus, Raf.) Young examples from 8 to 12 inches long were very com- mon in some of the lakes and sloughs, and were seen frequent- ly lurking about barges and fish boats in the bay. No large examples were seen. They are quite sportive at times, and keep up a constant splashing of the water as a skiff moves among them. Hundreds were seen at the south end of Long Lake. They were lying just beneath the surface, fanning the water with the fins sufficiently to keep the body stationary, and when approached would suddenly lash the tail out of water and disappear. The young of this gar averaged considerably larger than those of the other species and were more uniform in size. Highteen examples taken at random from different situations average 9.94 inches in length from tip of snout to tip of caudal fin. With two exceptions all. those seen had lost the caudal filament, and also, to a great extent, the black blotches of the very young. Those which possessed the filament were two of the three smallest examples taken, and measured respectively 8 and 8.50 inches in length. The largest examples seen measur- ed 12.50 inches. If these young are from the eggs spawned this season, and I believe they are, they indicate a more rapid growth, or an earlier spawning time for this species than for L. osseus. Localities: Harkness Slough, Goose Lake, Dead Man’s Slough, Claus Lake, Quincy Bay, mouth of Cedar Creek, Wood Slough. Lone-NosEpD Gar (Lepidosteus osseus, Linn. ) The young were more abundant and more generally dis- tributed than those of the preceding species. Thirty-eight ex- amples give an average length of 8.10 inches. The smallest 148 Illinois State Laboratory of Natural History. seen measured 6 inches in length, and the largest 12.25 inches. This last was the only one taken that had lost the caudal fila- ~ ment. The more uniform occurreace of this gar in bottom- land pools of all sorts and its greater abundance there, in addi- tion to the smaller average size of the young as compared with those of L. platystomus, suggest a later spawning time. If the short-nosed gar spawns earlier, its young have more time to es- cape from the temporary pools, and we should expect to find fewer of them present in August. The matter needs further attention, however, as a difference in the relative abundance of adults in the river at this point, or some unknown difference in spawning habit, may have to do with some of the differ- ences we have noted. Localities: Harkness Slough, Dead Man’s Slough, Moss Lake, Claus Lake, Willow Slough, Lily Lake, Long Lake, Broad Lake, Wood Slough. Famipy Potyopontip&. (SHOVEL-FISH. ) SHovet-FisH (Polyodon spathula, Walbaum. ) This fish evidently does not spawn on the overflowed bot- tom-land. A single example about 14 inches long from Wood Slough was the only one taken. The adults are common in the Mississippi River, where they were occasionally seen leap- ing above the water. Faminy PErromyZoNTID®. (LAMPREYS. ) Lamprey Hex (Petromyzon castaneus, Gir.) A lamprey taken by the men from Wood Slough was prob- © ably of this species. It was not secured for examination. INVERTEBRATES. : Small animals, such as insects, crustaceans, and mollusks, were not as abundant as they commonly prove to be in perma- nent bodies of water in other localities. The absence of vege- tation and the abundance of their enemies, the fishes, doubtless both had to do with this. The condition of these pools, as we have seen, is not favorable to a growth of vegetation, and the Animals of the Mississippi Bottoms near Quincy. 149 season was exceptionally unpropitious with respect to this. Those small creatures which did occur in the pools were thus deprived of the protection which a rank growth of vegetation affords, and could not be expected to maintain themselves where every square yard of bottom must have been searched each day by hungry fishes. Notwithstanding this condition of things, certain species occurred in considerable numbers. Such as have the curious habit of remaining motionless in the pres- ence of enemies and such as burrow readily in mud, were very common in some of the pools. Consequently, when it is said that invertebrate animais were not common in these waters, it is meant that, as compared with permanent lakes elsewhere, there was not here a great diversity of forms represented each by an abundance of individuals. MOLLUSCA. (SuHetz Fisu.) The Mollusca were represented in the locality by both Gasteropoda and Lamellibranchiata. The snails were nearly all of small size, none of those seen having shells over 1.25 inches in length. These creatures are well suited to a residence in these ponds. Some of them, at least, can breathe either in water or in air, and hence can travel to other pools if the water dries up. A part of them never need to do this, for when the pools dry up, either in winter or summer, they resort to the mud and rubbish of the exposed bottom, close up their shells, and remain inactive till the water comes again. They are ordinarily seen creeping about over the bottom, where they feed upon microscopic plants and animals or upon decaying organic matter in the form of a slimy coat on sticks and mud. If pressed with hunger, they have been known to resort to animal food, and in some instan- ces devour their own kind. Some of them burrow into the mud at the bottom and become torpid in winter, but more active species may be seen moving over the bottom under the ice. The eggs are laid in spring, attached in masses to sticks and dead leaves. The young hatch in two or three weeks, accord- ing to temperature. 150 Illinois State Laboratory of Natural History. Famity Linnzrpm. (Ponpd SNAILS.) Physa ancillaria, Say. (Say, Jour. Acad. Nat. Sci. Phil., v, 124, 1825.) Common in Long Lake and in Willow Slough. The larg- est examples taken measure about .50 inch in length. Physa heterostropha, Say. (Limnea heterostropha, Say, Am. ed. Nich. Ence., pl. i, fig. 6, 1817, 1818, 1819 [as cited by Binney ].) This was probably the most common snail in the bottom- land pools. It is one of the thin-shelled species, with about four whorls, and differs from the preceding in having a longer and more tapering spire and a narrower aperture. Otherwise they are much alike. This is one of the most active and wide- ly distributed of the species taken. It is said sometimes to attack and devour insects as large as itself. The eggs are deposited, according to Say, in the month of May, but proba- bly at intervals during the summer also. Egg masses, which in all probability were from this snail, were quite frequently found attached to the outside of shells, where they had been left by other individuals. The shells were frequently clothed with growths of stalked infusorians. Localities: Harkness Slough, Quincy Bay, Willow Slough, Cedar Creek, Wood Slough. Helisoma trivolvis, Say. (Planorbis trivolvis, Say, Am. ed. Nich. Ence., pl. ii, fig. 2, 1817, 1818, 1819.) Common in many of the pools. LHasily recognized by its depressed shell,—the whorls lying nearly in one plane so that they can be followed on two sides of the shell. Large examples taken, measure five eighths of an inch in diameter. Localities: Harkness Slough, Willow Slough, Lily Lake, Long Lake, Wood Slough. Famity VALVATID&. Valvata tricarinata, Say. (Cyclostoma tricarinata, Say, Jour. Acad, Nat. Sci. Phil., i, 138, 1818.) Animals of the Mississippi Bottoms near Quincy. 151 This small mollusk was common in many of the pools, but was not often brought out in the nets from pools in which it was very abundant. The shell is about .20 inch in diameter and may be recognized at once among our species by the strong _ ridges on the outside of the shell. It is somewhat depressed and the aperture is nearly circular in outline. The food is said to be vegetable matter. The eggs of related Kuropean species are deposited singly. Famity Viviparip#. (RIVER SNAILS.) Vivipara intertexta, Say. (Paludina intertexta, Say, New Harmony Disseminator, ii, 244, 1829.) A common and uniformly distributed snail of rather large size. Shell rather stout, with about five strongly convex whorls. Adults dull reddish browu in color; young paler, with numerous fine revolving striz on the whorls. The largest example taken measures one inch in length, with the largest whorl .87 inch in diameter. Inside the aperture may usually be seen several large reddish brown revolving bands. The young are born alive. Localities: Harkness Slough, Willow Slough, Lily Lake, Long Lake, Wood Slough. Vivipara subpurpurea, Say. (Paludina subpurpurea, New Harmony Disseminator, ii, 245, 1829.) Found only in Lily Lake. It is much like the preceding, but has a slightly more tapering shell with the whorls flattened next the revolving suture. Campeloma decisum, Say. (Limnea decisa, Say, Am. ed. Nich. Ene. 1, 1817.) This was the largest and most abundant river snail ob- served. It may be distinguished from the two preceding by its more slender form, more tapering spire, and less convex whorls. The general color is a uniform olive green, more or less stained towards the apex with brown. Inside the aperture pure bluish white. An example measures 1.37 inches in length, with the Jargest whorl .87 inch in diameter. The young are brought 152 Illinois State Laboratory of Natural History. forth alive, and may be found in the ovaries in the fall preced- ing the spring during which they are set free. The adults go into the mud at the bottom of the ponds and streams to hiber- nate. Localities: Harkness Slough, Quincy Bay, Willow Slough, Lily Lake, Broad Lake, Wood Slough. Lioplax subcarinata, Say. (Limnea subcarinata, Say, Am. ed. Nich. Ene. 1, 1816.) Frequent in Willow Slough. Similar to the preceding, but smaller and marked by an obtuse ridge extending along the middle of each whorl. One of the largest examples taken is just .50 inch in length. Like the other members of the family it 1s viviparous. Famity Risso. Somatogyrus isogonus, Say. (Melania isogona, Say, New Harmony Disseminator, 11, 227, 1829.) Numerous examples from Willow Slough, Aug. 15. Amnicola limosa, Say. (Paludina limosa, Say, Jour. Acad. Nat. Sci. Phil., 1, 125, 131%.) Dredged in 3-5 feet of water, Willow Slough, Aug. 15. The clams are not very different from the river snails in their way of living. They may be frequently seen in shallow water with the front part of the body buried in the mud and the soft, white “foot” thrust out of the shell. If watched in- tently under such circumstances they may be observed to move slowly forward, leaving a groove in the mud behind them. In suitable places in quiet water they may become very abundant, forming what are known as clam beds. The food of some of ‘our species consists entirely of microscopic plants and aninzals, such as alge and protozoans. Some of the Unios are very probably scavengers, if we may decide from the condition of food in the stomachs of alcoholic specimens. In winter our species probably all go into the mud at the bottom of the streams and lakes, and there remain torpid until spring. Their interest, viewed either from the standpoint of the fish-culturist or from that of the scientist, is very great. As Animals of the Mississippi Bottoms near Quincy. 153 Prof. Forbes has shown in his papers on the food of fishes, they constitute a large item of the food of some of our best fishes. The great abundance in which they occur in the water of this region must give them a decided influence, as competitors for food. Of the two families appearing in the Quincy collection, the first is represented by small species which commonly pass for the young of the true clams (Unionide) of the second family. That they are adult animals is, however, easily shown with a magnifying glass, since by its means they may be seen in many cases to contain living young of relatively large size. The shells of these bivalves are not commonly more than half an inch in length. Famity CorBICULID. Spherium solidulum, Prime. (Cyclas solidula, Prime, Proc. Bost. Soc. Nat. Hist., iv, 158, 1851.) Common in shallow water in Willow Slough. Spherium transversum, Say. (Cyclas transversa, Say, New Harmony Disseminator, 1, 346, 1829.) Frequent in several of the pools. Localities: Willow Slough, Long Lake, Broad Lake, Wood Slough. Famity Untontip#. (River Chas.) Anodonta grandis, Say. (Say, New Harmony Disseminator, i, 341, 1840.) This large, smooth, thin-shelled clam is common in most . of the sloughs and lakes. It is probably the species which the channel catfish manages to tear from its shell. The shells re- cently emptied were sometimes brought out by seines in great numbers. Young and adults were seen in the sloughs and lakes, one of the former measuring .62 inchin length. A valve of a large one, picked up at the edge of Wood Slough, measured 6.75 inches in length. Localities: Lily Lake, Broad Lake, Wood Slough. 154 Illinois State Laboratory of Natural History. Anodonta imbecilis, Say. (Say, New Harmony Disseminator, 1829.) Young examples about an inch long were very common in Wood and Willow Sloughs. The adults were not seen. Localities: Willow Slough, Lily Lake, Wood Slough. Unio alatus, Say. (Say, Nich. Enc., Am. ed., pl. iv, fig. 2, 1816, 1818, 1819.) Taken in Willow Slough and Lily Lake. Unio gracilis, Barnes. (Barnes, Silliman’s Jour., ii, 174, 1823.) Taken in Willow Slough. Unio levissimus, Lea. (Lea, Am. Phil. Soc., iii, pl. 18, fig. 23; Obs. on Genus Unio, 1.) This is one of the large compressed species with angular expansions of the dorsal or hinge portion of the shell. The young are especially noticeable because of the large relative size of these angular processes, and were very common in por- tions of Wood and Willow Sloughs. In Lily Lake, also, they were numerous, but were not seen elsewhere. Unio parvus, Barnes. (Barnes, Silliman’s Jour., vi, 174, 1823.) Examples of this small clam 1.62 inches long were taken in Harkness Slough. It was not observed outside the levee. INSECTA. Unfortunately, little has been done on aquatic insects by entomologists, beyond describing and naming the species, and a search through the writings of American and foreign authors does not yield much of the particular kind of knowledge of which practical fish work stands in need. The food habits and transformations especially have been greatly neglected. We cannot therefore give such an account of the species collected as could be wished, but shall aim to add something toa knowl- edge of food habits in certain cases, and to point out, as clearly as we can in a brief paper, the forms whose acquaintance the economic ichthyologist needs to make. . ae ae ) Animals of the Mississippi Bottoms near Quincy. 155 An exhaustive treatment of the group in its relations to fish culture would call for an account of every order of the class; for while such orders as Hymenoptera and Lepidoptera are very largely terrestrial, a glance at Prof. Forbes’s most recent paper on the food of fishes will show that even bees, moths, and lepidopterous larve are devoured when chance brings them within reach. Freshets surprise and carry into the current of streams great numbers of terrestrial beetles and bugs which live in the earth, under dead leaves and on vegetation, and these furnish at such times no inconsiderable part of the food of the smaller fishes. The common aquatic insects belong to the foilowing orders: Diptera, Coleoptera, Trichoptera, Neuroptera, Hemip- tera (true bugs), Ephemeride, Plecoptera, and Odonata. Some of these live in the water throughout life; others in the larval and pupal stages; still others in the larval and mature stages; while a part are aquatic onlyin the larval condition. The food varies greatly with the species and may vary with different stages of the same insect. It consists of decaying organic mat- ter, or of living plants or animals, while some forms constant- ly take a mixed aliment. It is not possible therefore with our present knowledge of the subject to calculate the effect of a sudden removal of the whole group from its relations to the other life of our waters; but considered only as fish food there can be no doubt that the effect would be decidedly to the detri- ment of fishes. Even those insects that prey upon the eggs and young of fishes are themselves in turn devoured by the adult fishes, and there seem to be very few indeed of the aquatic insects that are not eaten by fishes in greater or smaller num- bers. OrpER Diptera. (FLIEs.) Flies of at least nine families are aquatic in the larval stage; but the majority of the individuals commonly collected in our waters pertain to the families, Simulide, Culicide, Chi- ronomide, and Tabanide. To the first-named family belong the notorious black fly and buffalo gnat. The larva of a very similar species (perhaps the same as one or the other) is very common in winter and early spring under rocks and wood in 156 Illinois State Laboratory of Natural History. spring-fed streams in [llinois, but the flies are not known to damage stock in this region (central Illinois). The larvee of this family are eaten by trout, and occur in the stomachs of other smaller fishes. The pupz live in leathery cases attached to the underside of stones and other objects in the water. The adult fly emerges under water in the spring of the year. Cedar Creek is exactly suited to these insects, and we should expect to find them there at the proper season. The families Culicide and Chironomide contain the mos- quitoes and gnats. The larve occur in water at all times of the year, so that in all probability a succession of broods are reared each season. Some species, at ieast, are found in water when cold weather comes in the fall, and doubtless remain in the larval condition till the next season. The eggs are placed in small masses on the surface of the water, where they float till the larvee emerge. The food is believed, commonly, to be decaying organic matter, so that the larve have been thought to offset in a measure, as fish-food and as scavengers, the inflic- tions of the adults. They are extremely common, and may be captured at night in surface nets literally by the pint. The family Tabanide (the horse flies) contains a number of species with aquatic larve. The eggs, which are elongated, smooth and shining, and of a dark color, are deposited in masses by the flies on rushes and other aquatic plants in the latter part of summer. The larve live during the winter in the water, lurking about under submerged wood or refuse. They are carnivorous, and with their strong mouth parts can inflict a severe bite. From their strength and activity they must destroy great numbers of the smaller aquatic animals. — One kept by the late B. D. Walsh, fed upon a number of mol- lusks, pushing its way into the shells as far as it could, as it devoured the owners. Notwithstanding their aggressive ways, quantities of them are sometimes taken by the channel catfish (Ictalurus punctatus), and they are eaten, at least occasionally, by bull pout. Faminy Cunicipa. (GNats anp Mosquirogs. ) Culex sp. The adults of one or more mosquitoes were moderately common about the sloughs. The larve were not observed Animals of the Mississippi Bottoms near Quincy. 157 except in one of the more stagnant bodies of water, but were probably present in all. These insects pass the winter in the winged state, hid away in crannies. The larve swim head downward, and are the “‘wigglers” of neglected cisterns and rain barrels. The food during aquatic life is probably decaying organic matter. Corethra sp. The larve of this genus are small, worm-like creatures, those from Quincy about .32 inch long and .028 inch in diame- . ter. The body is cylindrical, tapering towards the posterior extremity. ‘lhe head is provided with a perplexing variety of structures for the perception and management of food, includ- ing eyes, antenne, biting jaws, and a number of other tactile and prehensile appendages. In front of the eyes the head re- sembles a truncated cone, and at the blunt front extremity is attached a pair of antenne consisting each of a long basal seg- ment, from the free extremity of which arise from three to five long, curved, and tapering rods. Near the posterior end of the body is a series of long, plumose filaments. The body is beau- tifully transparent in life, and within it may be seen, near each extremity, a pair of pigmented, kidney-shaped respiratory sacs. The pupe may be distinguished from those of the next genus by the presence on each side of the thorax of an odd, bladder-like respiratory structure, the two resembling a pair of ears. At the posterior end of the body is a pair of large fan- shaped fins, by means of which the pupx swim freely in the water. The adults are small, weak, obscurely-colored gnats, which are not often observed. Two species of Corethra are recorded from this country. Our larve resemble those of the European Corethra plumi- cornis, but differ apparently in some details of form,—as in the shape of the eyes, and of certain leaf-like tactile appendages in front of the mouth. The eggs are laid enclosed in a gelatinous material, arranged spirally in a single series in disk-snaped masses, and float at the surface of the water till the young larve emerge. This occurs about a week after the eggs are laid, but probably the time varies greatly with the temperature. 4q 158 Lilinois State Laboratory of Natural History. Famity CurronoMip&®. (GNATSs. ) The familiar aquatic larvee of this family belong to the genus Chironomus. Probably no other one genus of insects constitutes as important an item in the food of as large a num- ber of fishes. They may be recognized by their uniformly cylindrical bodies, small heads, enclosed in an opaque crust, and with a bilobed foot-like process bearing a dense brush of curved bristly hairs extending forward beneath it. At the posterior end of the body is a pair of false feet, also characteristic, each bearing a circlet of retractile hooks. The head is smaller rela- tively than that of the larva of Corethra, but under the micro- scope the parts appear almost as complicated. The structures present, however, are mainly in the nature of biting organs, the parts having to do with perception being here poorly de- veloped. Thus the jaws are well developed, the edges of the mouth-opening are furnished with numerous teeth and hooks, and the labium is a broad plate with strongly toothed edge, while, on the other hand, the eyes and antenne are very small. All this corresponds with what is known of the food of the larve. Their digestive tube is often filled with a brown granu- lar material, consisting, as nearly as can be made out with the microscope, of decomposed organic matter containing great numbers of bacteria and a good many empty frustules of diatoms. In one example was found the fragments of an in- sect. The organs for mastication, complicated as they are, would hardly be equal to the complete obliteration of the cell- structure of plants and animals, were these the aliment upon which the larve depended, and I believe that the material in | the alimentary canals examined was dead when taken. The diatoms were not more frequent than they would be if taken in the slimy coating which collects on submerged objects. .The insect fragments, which were of rather large size, bore evidence of having formed a rejected skin; while the abundance of bac- teria among the alimentary contents points also in the same direction. The larve are often of a blood-red color. They swim by a wriggling movement when in open water, but commonly live at the bottom, under stones and rubbish, where they construct Animals of the Mississippi Bottoms near Quincy. 159 galleries of agglutinated sand in which numbers live together. They may be found in water at all seasons of the year, even under the ice in winter. Quite a number of species are repre- sented by the larve taken at Quincy, and some of the forms described below may represent several related species instead of one. The pupz differ from those of Corethra in having cottony tufts or antler-shaped fleshy respiratory appendages on each side of the thorax; but some apparently lack these structures. Those with the cottony tufts were common in the galleries under rocks. The ones with antler-shaped respiratory struc- tures were taken at the surface in the bay, and may prove to be free-swimming. Several of these latter had the posterior part of the body enclosed in the larval skin. The winged adults were emerging at the surface of the bay — August 8. Those captured, nearly all females, were brought in by the surface net, and are probably among the smallest of the genus, being only about .08 inch long. Color, pale yellow, with three large, brown, longitudinal spots on the thorax, the middle one placed before the others and continued behind by a very narrow median brown line. Segments of abdomen brown centrally above; pale at the margins and below. Antenne, legs, and balancers, whitish. Wings unmarked. One male taken is more distinctly marked, and shows some dusky on the legs and ventral side of the thorax, while the plumose antennz are decidedly blackish. Chironomus, larva (1). Large examples of this larva average about .44 inch in length. Head, yellowish brown. LEHye-specks, two. Labium with strongly arched anterior edge, cut into about six black teeth on each side, with a median tricuspid tooth. Posterior segments with three pairs of fleshy (respiratory?) appendages; the first pair short and club-shaped, attached at the posterior edge of the antepenultimate segment, the second and third pairs long and contorted, attached the one to the middle and the other to the posterior edge of the penultimate segment. The four anal papille rather slender, enlarging a trifle distally. A a ee 160 Illinois State Laboratory of Natural History. Pupz constantly found in sand galleries with this larva have a pair of strong frontal hooks and are provided with cottony respiratory tufts on the thorax. Length about .32 inch, These larvee and pupe were taken in numbers under rocks, a short distance within the mouth of Cedar Creek. Young short-nosed gars (1. platystomus) had invaded the creek from the bay and were busily probing the crannies and feeding on the insects. One hundred and eighty-three larve and forty-two pupz were counted in the stomach of a single gar about nine inches long. Chironomus, larva (2). About equal to (1) in size. Head pale brown, under side black. Two eye-specks. Labium with four teeth on each side; median tooth shorter than the two next it. Hairs of anterior pediform appendage rusty. A single pair of small club-shaped (respiratory?) appendages at posterior edge of the penultimate segment. Anal papillz conspicuously enlarged distally. Less common than (1), but more widely distributed. Localities: Willow Slough, Cedar Creek, Broad Lake, Wood Slough. Chironomus, larva (3). Small; the largest of two examples taken, only .24 inch long. A single eye-speck. Posterior segments without fleshy respiratory appendages. Anal papillze apparently jointed. One example each from Willow Slough and Cedar Creek. Chironomus, larva (4). A single very large larva, 1.38 inches long, from Ballard Slough, seems to differ from all the preceding. Head black beneath ; eye-specks two. Labium with a large truncate median tooth, with a small tooth each side of it; outside the latter, two other large truncate teeth,—about four teeth, large and small, on each side. Posterior segments without fleshy respi- ratory appendages. Anal papilla not jointed. Chironomus, larva (5). A very small pupa (.12 inch long) taken August 7 within the mouth of Cedar Creek still retained its larva skin, the oe Animals of the Mississippi Bottoms near Quincy. 161 labium of which differs from that of all the preceding larva in lacking the median tooth. Its condition would not permit of more extended comparison with the others, and it may prove the same as (3). Ceratopogon, larva. This is an extremely slender, transparent larva, resembling a vinegar eel, with eight long hairs radiating from the pos- terior body segment. It has been noted by Professor Forbes in the stomachs of fishes. Common among alge in Lily Lake August 15. ORDER COLEOPTERA. (BEETLEs.) The aquatic members of this order of insects frequently have some or all of their limbs flattened and fringed to fit them for rapid locomotion in the water. Others show little in their structure that is adaptive to aquatic life, and simply creep about under water or cling to submerged vegetation much asa terrestrial beetle might. They are all, when adult, obliged to come to the surface for air, which they take and hold in bubbles by means of antenne, wing-covers, or legs. Some of the larvz also come to the surface for air, but others are pro- vided with special respiratory structures by means of which they are enabled to get oxygen from water. Only the larve and adult beetles are aquatic. The larva quits the water when ready to become a pupa, and commonly burrows into the neighboring banks, where it excavates a small chamber in which it pupates. The adult on emerging returns at once to the water. Many beetles in both larval and adult stages are very de- structive to small aquatic animals of other kinds, and even attack fishes of considerable size. Tadpoles many times larger than these insects are often devoured. Some eat only the dead of other insects, while still others feed largely on vege- tation. The families containing aquatic species are Amphizoide, Haliplide, Dytiscide, Gyrinide, Hydrophilide, Parnide and Daseyllide. The great majority of individuals and species 162 Illinois State Laboratory of Natural History. commonly taken in water pertain to the Haliplidw, Dytiscide, Gyrinide, and Hydrophilid. Several other families may ap- propriately be considered in connection with aquatic insects because of their constant abundance in the moist earth along water and on sub-aquatic vegetation. These beetles are un- questionably an important source of food to the carnivorous aquatic animals, and themselves doubtless attack and devour their aquatic neighbors when chance brings these latter ashore. Faminy Carasipm®. (PrepAckous GrouND BEETLES. ) A few species of Bembidinm and Elaphrus were gener- ally to be found on sunny days at the edges of sloughs, running over the mud. Under the logs in the neighborhood were the usual carabids of such situations — Galerita, Chlenius, and Pterostichus — but they were by no means common. The seining operations sometimes revealed the presence of certain burrowing species, such as Omophron americanum, in the moist mud of the shores; and in the latter part of August a sudden rise in the water surprised numerous examples of Clivina and Bembidium, which were noted floating on the surface at the mercy of predaceous aquatic animals. Famity HALipiips. The larve of this family are odd-looking creatures with strong spines or long-jointed respiratory appendages on the segments, the 9th (last) segment being produced and divided. Tarsi with a single claw. The larve of our two genera may be recognized by the following characters : Haliplus.—Spiracles present, no branchial filaments. Max- | illary palpi three-jointed. Clypeus truncate. Cnemidotus.—No spiracles, branchial filaments long and jointed. Maxillary palpi two-jointed. Clypeus notched. . Cnemidotus 12-punctatus, Say. (Haliplus 12-punctatus, Say, Trans. Am. Philos. Soc., N. Ser., i1, 106, 1825.) The beetles were moderately common in Willow Slough, where they were brought out by the dredge and dip net. Females taken August 15 contained ova with advanced em- bryos. a Animals of the Mississippi Bottoms near Quincy. 168 Famity Dytiscipm. (Prepactous WATER BEETLES. ) The larvee of these beetles are known as water-tigers from their rapacious habits. They have smooth bodies and long sickle-shaped jaws. In addition to these characters may be mentioned, as distinguishing these larve, the laterally placed antenne, the presence of two claws on the tarsus, and the apparent absence of the 9th segment of the abdomen. Both adults and young lead a predatory life, attacking and devouring whatever they can master. ‘They do not hesitate to attack animals many times larger than themselves and are very destructive in fish ponds to young fishes. They are in turn eaten by the larger fishes. They live, in some cases, several years. In the fall some of the beetles go into the mud to hibernate; others may be seen actively swimming about in mid- winter; and a few leave the water to hibernate under rubbish. The eggs are laid at intervals, and are scattered. Some, at least, of the larvee become pupz in the fall and emerge as adult beetles the following spring. Laccophilus maculosus, Germ. (Germar, Ins. Spec. Nov., p. 80 [as cited by G. R. Crotch ]; Say, Compl. Writ., ii, 514.) From Cedar Creek, Aug. 8. Apparently not common. Laccophilus fasciatus, Aubé. (Aubé, Species Général des Coléoptéres, vi, 423, 1838 ; Crotch, Trans. Am. Ent. Soc. iv, 400, 1872-73.) This small beetle, generally common in our ponds and lakes, was seen only in Cedar Creek. Bidessus lacustris, Say. (Hydroporus lacustris, Say, Trans. Am. Philos. Soc., N. Ser., ii, 103, 1825; Compl. Writ., ii, 517,) A minute species taken in Willow Slough and Cedar Creek. Hydroporus aulicus, Aubé. (Aubé, Species Général des Coléoptéres, vi, 572, 1888 ; Crotch, Trans. Am. Ent. Soc., iv, 396, 1872-73. ) Not rare in Wood Slough. 4 164 Tilinois State Laboratory of Natural History. Hydroporus vittatipennis, G. & H. (H. lineatus, LeConte, Proc. Acad. Nat. Sci. Phil., vii, 296, 1885.) Common in Willow Slough. Hydroporus consimilis, Lec. (LeConte, Agassiz’s “Lake Superior,” 214, 1850. ) Very abundant in crannies of decaying and submerged wood in Willow Slough. Hydroporus hybridus, Aubé. (Aubé, Species Général des Hydrocanthares et Gyriniens, 573, 1888. ) Common in Long Lake Aug. 9. Also found in Broad Lake and Willow Slough. Coptotomus interrogatus, Fabr. (Dytiscus interrogatus, Fabr., Systema Hleutheratorum, 1, 267, 1801; Crotch, Trans. Am. Ent. Soc., iv, 418, 1872-73.) Very abundant in Willow Slough and common in Long Lake and Cedar Creek. Acilius, larva. This larva is a trifle more than an inch long (1.12 inches), with a fusiform body terminating behind in a pair of short naked caudal stylets. It agrees very closely with the account of a European species (Acilius sulcatus) given by Schiddte. The head is rather small, with two contiguous brownish black spots on the front, and a median spot of this color midway between these and the posterior margin. Sides of head dusky. — Segments of thorax and abdomen pale olive above, the scutes of the abdominal segments narrowly edged with black, under parts and legs chiefly white. It differs from the European species in the form of the ligula, which is produced, and fur- nished at its tip with two strong sete. From Cedar Creek, Aug. 8. Thermonectes basilaris, Harr. (Harris, N. E. Farmer [as cited by Crotch]; Crotch, Trans. Am. Ent. Soc., iv, 402, 1872-73. ) a - Animals of the Mississippi Bottoms near Quincy. 165 About .44 inch long, general color black, with front, sides of thorax, and elytra yellowish brown. A line of this color also across the middle of the thorax. This was the largest beetle of its family taken at Quincy. It was captured in the same locality as the larva preceding, and may prove to be the adult, since the genera Acilius and Thermonectes are closely allied. Loeality, Cedar Creek. Fairy Gyrinip#. (Wurtriicra BEEties. ) These are the shining black beetles so often seen in large numbers circling about on the surface of the water. The three American genera all have representatives in IIlinois. They secrete a milky fluid which probably is offensive to fishes, since notwithstanding the great numbers in which they occur, they are very rarely eaten by other animals. The eggs are placed in parallel rows on the leaves of plants in the water. The larvee of European species are fully grown at the beginning of August, aud creep up rushes and spin upon these a papery cocoon. The adult beetle emerges from this in about a month and returns to the water, where it hibernates in the mud. In some cases the cocoon is placed at some distance from the water, under the bark of trees. The beetles are said to feed on dead insects. The larve may be known by their long slender bodies, the nine abdominal segments of which are furnished at each side with long fringed respiratory appendages. Tarsi with two claws. Posterior end of body with four curved hooks. Nema Gyrinus analis, Say. (Say, Trans. Am. Philos. Soc., 11, 108, 1825 ; Compl. Writ., ii, 520, 562.) A small Gyrinus, which I presume to be this species, was seen frequently on the pools in immense swarms, often with a few specimens of the larger Dineutes among them. When they were dipped up and carried ashore they turned and began making their way back to the water with surprising unanimity. This evident knowledge of their whereabouts and ability to take care of themselves on land was quite in contrast with 166 Illinois State Laboratory of Natural History. the behavior, under similar circumstances, of the equally com- mon water bugs of the genus Corisa. The latter, when brought ashore by the nets, scattered in every direction, and few of them ultimately reached the water again. The food of those examined consisted entirely of fragments of insects, which, judging by the large number of hairs, scales, and frag- ments of legs, were from moths which had fallen upon the water. Other species of Gyrinus from other parts of the State have been found to contain similar matter, from which it seems probable that they depend upon food of this character. Dineutes assimilis, Aubé. (Cyclinus assimilis, Kirby, Fauna Bor. Am., iv, 78, 1837 ; Dineutes assimilis, Lec., Proc. Acad. Nat. Sci. Phil., xx, 366, 1868. ) Two of three specimens examined contained fragments and scales of moths; and the third had eaten fragments of small predaceous land beetles and an aquatic worm,—Lumbriculus, or of some allied genus. The beetles are the common large whirligig beetles of ponds and lakes everywhere in the State. They were common in most of the pools at Quincy, and a few were noted sheltered among the branches of a partly sub- merged tree that had fallen into the swift current of the Mis- sissippi River. Gyrinus, larva. A small larva about .25 inch long, from Wood Slough, agrees exactly with published accounts of larve of this genus. Only one example was taken, though doubtless they were com- mon, judging by the abundance of adult beetles. Faminty HypropHILip 2. In the beetle state the food of this family is largely de- composing vegetable matter. Occasionally the large species attack mollusks or amphibians. The larve are carnivorous, and, like those of the Dytiscidw, do a good deal of damage in fish ponds. They have a single tarsal claw. The labrum is wanting. The 8th pair of spiracles is terminal, and the pos- terior end of the body is devoid of hooks. Some have fringed appendages along the abdomen like those of Gyrinus larve, Animals of the Mississippi Bottoms near Quincy. 16% The eggs are placed by the female in a silken case, sometimes attached to leaves or sticks which keep it at the surface, in other cases carried about by the beetle. A single case may enclose a hundred or more eggs. After hatching, the young larvee remain for some time in the case, where they are pro- tected from their enemies and insured a supply of air by being kept at the surface. A European species, very similar to our large black Hydrophilus, becomes fully grown as a larva in one hundred days, and leaves the water to burrow in the earth for pupation. The beetles hibernate in the mud and under rubbish. Hydrochus squamiger, Lec. (LeConte, Proc. Acad. Nat. Sci. Phil., vii, 359, 1855.) Found in Willow Slough August 15. Not common. Hydrophilus nimbatus, Say. (Say, Jour. Acad. Nat. Sci. Phil., 203, 1823; Compl. Writ., i, 130.) This species is evidently a scavenger. The digestive tube is long and coiled like that of a tadpole. It is commonly filled with a brown matter, largely granular and unrecognizable, among which are numerous diatoms, desmids, and fragments of filamentous alge. Moderately common in Willow Slough and Cedar Creek. Berosus pantherinus, Lee. (LeConte, Proc. Acad. Nat. Sci. Phil., vii, 364, 1855; Horn, Proc. Am. Philos. Soe., 1873, 122.) A common and widely distributed species. The long in- testine is filled with matter like that found in Hydrophilus nimbatus,—probably largely decaying vegetable matter. Mixed with the granular matter are many diatoms and bits of fila- mentous alge. Localities: Harkness Slough, Willow Slough, Cedar Creek, Long Lake, Wood Slough. Berosus striatus, Say. (Hydrophilus striatus, Say, Jour. Acad. Nat. Sci. Phil., N. Ser., v, 188, 1825; Compl. Writ., ii, 292.) 168 Illinois State Laboratory of Natural History. . Food like that of the preceding species, the only recogniz- able objects in the alimentary canals being in this case dia- toms. ce The species is abundant in Cedar Creek, and was found also in Ballard Slough. Hydrophilide, larva (1). A small larva with depressed and rather stout body, witha median brown band on the head and a pair of obscure dusky longitudinal stripes on the abdomen above. Palebelow. Sides of thorax and abdomen tuberculate. The mandibles are unlike any others we have seen. They are rather long, sickle-shaped, and bear at about the middle of their inner edge a strong tooth with bicuspid apex, minute denticles on its anterior edge, and one or two small teeth at its base. The largest example taken is a trifle more than a half inch long. Locality, Cedar Creek. Hydrophilide, larva (2). A small larva about .25 inch long, common in Cedar Creek, is evidently the young of one of the above species of Berosus. The body is widest at the middle and tapers pretty uniformly to the extremities. Head small; ocelli superior; clypeus den- ticulate. Basal segment of maxille unusually long and strong. Segments of body coarsely wrinkled, the seven anterior divisions of the abdomen, each with a pair of long, naked respiratory filaments. Terminal segment nipple-shaped; no caudal append- ages. Young examples are transparent in life, but grow more opaque when older. FamILy STAPHYLINID®. (Rove BrEertszs. ) Small species of this family of beetles were always com- mon in the mud and sand at the edges of sloughs, and many were noticed floating and struggling on the surface in the latter part of August, after the water had risen suddenly. FamiIty ParNnip2&. These small beetles creep about or burrow in the mud un- der water. From the structure of the jaws they have been Animals of the Mississippi Bottoms near Quincy. 169 supposed to be carnivorous. The larve are greatly flattened and live under rocks, sometimes in rapid currents. Stenelmis vittipennis, Zimm. (Trans. Am. Ent. Soc., ii, 259, 1869; Horn, ibid, iii, 40, 1870-71.) Taken in Willow and Wood Sloughs. Macronychus glabratus, Say. (Say, Jour. Acad. Nat. Sci. Phil., N. Ser., v, 187, 1827; Compl. Writ., 11, 292.) Wood Slough, Aug. 4. Not common. Famity HETEROCERID2. Heterocerus undatus, Mels. This isa small brown pubescent beetle about .20 inch long, with a few irregular yellow marks on the wing covers. It occurred in very great numbers in the earth at the edges of the more isolated sloughs, in burrows resembling miniature mole hills. When the seines brought the water over the burrows the beetles at once appeared and took flight. The larvee also were present in abundance, and were found at times exposed on the surface of the water. : My attention was especially drawn to the curious little mud cases which the larvae construct when ready to pupate, and of which IJ have seen no published description. The cases are always made in the moist mud at the immediate edge of the water and are carefully detached from the adjacent soil, so that each stands in a little hollow. From one side arises a closed chimney often equal in height to the basal portion of the case. The beetles were emerging from the cases on the 11th of Au- gust, always making their way out by creeping up the chimney and breaking through its extremity. The beetles were seen along most of the sloughs and lakes. The mud cases were noted as especially abundant along Long and Broad Lakes and Harkness Slough. At the edge of the first-named lake eighteen of the cases were counted on an area about one foot square. The food of both adults and larve consists of brown granular a 170 Illinois State Laboratory of Natural History. matter containing numerous diatoms, and of small cells, isolated and in chaplets, of what Prof. Burrill thinks is a Conferva,— one of the alge which grow on moist surfaces. ORDER TRICHOPTERA. (Casz Frtns.) Larve of this group usually construct movable or fixed cases with openings at the ends. These cases are sometimes of peculiar shape, and oftener attract attention than the winged insects. They may be cylindrical, cone-shaped, spiral, like a flattened ink bottle, etc., and generally have bits of vegetation, or sand, fastened over the outer surface. The adults are small obscurely-colored insects, which usually take no food, and after depositing their eggs soon die. The eggs, enclosed in a gela- tinous material, are placed on aquatic plants, the females, it is thought, sometimes descending into the water for this purpose. The larvee feed on vegetable matter, such as dead leaves, stems, and wood, but sometimes devour also small insects and crusta- ceans. ‘Those I have examined are abundant in small streams in central Illinois, and make large cylindrical cases, to the outside of which are fastened, longitudinally, numerous small sticks. The alimentary canal of this larva has always been found filled with decayed woody vegetable matter. The pup are formed in the cases, which are, if movable, fastened down by the larva previous to pupation. Trichoptera, larva (1). The common case-fly larva at Quincy was a somewhat un- usual one as to habits. Most of our species creep slowly about on vegetation or on the bottom. This one is a free-swimming larva, and one or two were always taken when the surface net was drawn over the deepest water of Quincy Bay. It was cap- tured on one occasion in the swift current of the river in a net drawn after the steamer ‘‘ Hannibal Eagle.” The case is trumpet-shaped, gradually decreasing in caliber from the larger end (which has a diameter of about .07 inch) to the smaller extremity, where the diameter is about .03 inch. The outside of the case has scattered bits of dead vegetable matter fastened over it, and numerous minute particles of sand. Fastened to Animals of the Mississippi Bottoms near Quincy. 171 one side, sometimes to two sides, is a long rootlet or twig of a weed that may project at one or both extremities some distance beyond the case. The larva is plain white, with the head mottled with yellow and deep brown. Along the sides are attached fleshy respiratory filaments. The usual tubercles and _ hooks for adhering to the case are present. It swims by strik- ing the water with the very long and heavily fringed hind legs, these being projected beyond the large opening for this purpose. Trichoptera, larva (2). A second larva lives in a short, conical case about .25 inch long, with a diameter of .125 inch at the larger and of .06 inch at the smaller end. The outer surface is thickly covered with bits of dead vegetation, but lacks the long pieces which seem | never to be absent from the other cases. The larva also is short and stout, but is not otherwise very different from (1). The posterior legs are not so long and slender relatively and the fringe is less perfect. This form was taken from the bottom in Willow Slough. Trichoptera, pupa. A pupa of some species of this group was taken in Willow Slough sealed up in its cylindrical case of dead vegetable materials. At the end towards which the head lay, a narrow slit had been left for the passage of water for respiration. Judging by the cast larval skin with this pupa, it cannot belong to either of the two larvex described. ORDER NEUROPTERA. (HetiLGRAMMITES AND LAcE-wING FLIEs. ) This order contains two families, the larve of which are very different in habit. The lace-wing flies are throughout life terrestrial, and are well known to gardeners and fruit- growers for the good they do by devouring plant-lice. The hellgrammites or crawlers are aquatic during the larva stage and feed upon other water insects, such as case-fly and May-fly larvee. They are themselves, to some extent, used by sports- men as bait in catching fishes, their tough skin rendering them 172 Illinois State Laboratory of Natural History. easily disposed and retained on the hook. They are furnished with seven or eight pairs of respiratory filaments along the sides of the body for use in the water, and have, besides, breathing pores (spiracles), which they use when they leave the water to pupate in the earth. The tarsi have two claws. The eggs are deposited in large, whitish discoidal masses on the leaves of trees and on the sides. of boats and barges. Corydalis cornutus, Linn. (Hellgrammite. ) (Walsh and Riley, Am. Ent., 1, 61, 1868.) The larve and adult of this large insect often attract the attention of those who live on our rivers. The species is not often seen in the interior of the State. Along the Mississippi River it is very common, though its abundance is not commonly apparent excepting during the egg-laying season. In August the wood barges and boats in the bay were resorted to by the females, and the masses of eggs were left in numbers upon the timbers. ORDER HEMIPTERA. (True Bvues.) This is one of the most important groups of aquatie insects, both on account of the food its-members furnish to fishes, and also because of the serious injuries which some bugs do to fish eggs and fry. The genera Ranatra and Belostoma are especially to be remembered as containing some of the worst insect enemies to fishes of which we know. Most of them begin a predatory life as soon as hatched from the egg, and continue it without cessation throughout their existence. The common food consists of larvee of other insects, mollusks, and the like. The eggs are generally deposited on aquatic plants, sometimes enclosed in gelatinous matter, but in many cases quite naked. Corisa sometimes places its eggs on the shells of crayfishes. Hight families of the order have common repre- sentatives inthe waters of the State. Of these, five appear in the collection made at Quincy. Famity Hypropatipa.: (Crazy Bues.) Limnotrechus marginatus, Say. (Gerris marginatus, Say, Heteropterous Hemiptera, 1831, 807.) Animals of the Mississippi Bottoms near Quincy. 178 The eggs of this “ skipper ” are attached to aquatic plants, and the young pupe resemble the grown insect except for the wings and increased size. In winter the adults are found under rubbish in the shallow water at the edges of streams. The species was common in a number of the sloughs, and was noted especially in Harkness Slough, Willow Slough, and Long Lake. Stephania picta, H. Sch. (Uhler, Stand. Nat. Hist., ii, 270.) A small brightly colored insect taken only in Wood Slough and Long Lake. Famity VELIID#. Mesovelia bisignata, Uhler. (Uhler, Stand. Nat. Hist., ii, 274.) A small greenish yellow insect about .12 inch long, which is frequently found on the surface of water. Frequent at edges of Willow Slough August 15. ; Famity BELOSTOMATID®. _ Benacus griseus, Say. | This is one of the large, flat, predaceous bugs that some- _ times become destructive to young fishes. It is reported by | Mr. C. A. Hart, of this Laboratory, as common at the electric lights in Quincy. It was not seen in the water, but this was - doubtless due to some peculiarity in its habits. For some | reason it is never brought out in the seines and dredges in parts of the State in which the numbers taken at electric lights show it tobe verycommon. Oursmall species of this family (Zaitha | Jluminea) often comes out in the seines by dozens. Famity Neprip#. (Water Scorpions.) Ranatra 4-dentata, Stal. (Stal, Ofv. af kongl. Vetensk.-Akad. Férhandl., 1861, 204; _ Uhler, Stand. Nat. Hist., ii, 255.) This bug is very slow of motion and creeps about on the _ bottom or on plants, depending on its resemblance toa piece of dead vegetation for securing the animals upon which it preys, 174 Illinois State Laboratory of Natural History. and for avoiding itsenemies. It is said to puncture and destroy the eggs of fishes. Its own eggs are elongated and are provided with two long filaments at one end. Famity Notonectip#. (Water BoatMen.) Notonecta undulata, Say. (Say, Heteropterous Hemiptera, 1831, 39 ; Compl. Writ., i, 368. ) ? An active, predaceous insect, capable of inflicting a severe sting with its beak when handled incautiously. The eggs, which are elongated, cylindrical, and white, are attached to aquatic plants. The young have been observed to emerge in May. Taken in Quincy on Cedar Creek. ; Plea striola, Fieber. (Uhler, Stand. Nat. Hist., 11, 253.) A minute, brown, hard-bodied species, which is quite com- mon in many streams in Illinois. Taken only in Willow Slough. Not common. Faminty Corisip™. Corisa signata, Fieber. (Fieber, Abhandl. Kén. Bohm. Gesell. Wiss., 1852, 233.) This small species was extremely abundant in the tempo- rary pools, especially so in Wood Slough. Corisa alternata, Say. (Say, Jour. Acad. Nat. Sci. Phil., N. Ser., iv, 329, 1825; Compl. Writ., 11, 251.) This is the commonest Illinois Corisa. It was less abund- ant in some of the Quincy pools than the preceding, but was more widely distributed. Noted especially in Cedar Creek and Long Lake. The eggs are oval and have a small prominence at the free extremity. They are attached generally to plants. ORDER ORTHOPTERA. (Cricknts anD GRASSHOPPERS.) This is a strictly terrestrial group, and calls for mention here only because of the constant presence, on the banks of streams and pools, of species belonging to it, which doubtless ae Animals of the Mississippi Bottoms near Quincy. 175 have an effect as fish food, and otherwise on aquatic life. At Quincy, a small cricket (Tridactylus apicalis) occurred in myriads among weeds which were springing up from the mud at the edges of sloughs, and individuals were sometimes found upon the water. ORDER PLECOPTERA. Small insects, which, as nymphs, live under rocks and boards, often in swift-flowing water. The pupa takes food, and after attaining its growth leaves the water, and transforms to the winged adult. In a number of points they are allied to the grasshoppers. Plecoptera, nymph. A flat nymph found in Willow Slough. It is about .52 inch long and bears at the end of the abdomen two long, jointed appendages. The antenne are long and slender, the mouth parts much like those of a grasshopper or cockroach. Head _ very wide, and with a pair of compound and three simple eyes. Three divisions of the thorax large, with expanded terga, and bearing at each side cottony respiratory tufts. Legs with strong femora and three-jointed tarsi. They were not common at Quincy, probably because the waters do not furnish them suitable shelter. ORDER ODONATA. (Dragon Ftrizs, SNAKE FEEDERS. ) These are predaceous when adult, feeding upon gnats, mosquitoes, flies, etc., which they capture while flitting rapidly about. Dragon fly larve and pupe have the reputation of preying upon other insects, and as a rule this will probably be found true; but an examination of several larvee shows them to be in some cases largely vegetable feeders and possibly scaven- gers, the alimentary canal containing numbers of desmids, dia- toms, fragments of moulds, and a good deal of material (prob- ably slime) gathered from the bottom for the small organisms and the organic matter contained in it. The eggs are dropped into the water as the females fly over it, or may be attached to submerged plants. Members of one genus are said to go be- | 176 ‘Illinois State Laboratory of Natural History. neath the surface and insert the eggs in the stems of plants. The young are common objects in the stomachs of fishes. The adults were not common about the pools in which the Fish Commission work was done. An occasional large species with clear wings was seen, and a small, slender-bodied form was - noted as common about Lily, Long, and Broad Lakes. These were the only winged dragon flies seen. In the water, on the contrary, the immature stages of a number of species..were common. These latter fall into four groups, which, for the purposes of this paper may be chacterized as follows : Antenne filiform, of seven articles. Legs slender, not suited to digging. Abdomen long, cylindrical, terminating in three large, flat, leaf-shaped respiratory appendages. Includes numbers 2: and... 2.2. . NRE WAL A Ray pron Kees Agrionina. Antenne stout, of four articles, the distal one rudimentary.. Legs stout, suited to digging; tarsi of two anterior legs of two articles; tarsi of posterior legs of three articles. Labium not cleft. Includes numbers 4, 5, and 6.............. Gomphina. Antenne filiform, of six or seven articles. Legs slender; all the tarsi of three articles. Labium with a narrow median cleft. Labial palpi not oo and spoon- shaped. Includes only numbers 7 and 8......5....-6-+.0---20+0e0- A‘schnina. Antenne filiform, of seven articles. Legsslender. Labium not cleft. Labial palpi expanded and spoon-shaped, meeting along the middle line. Includes number 9-12....Libellulina. 1. Agrion ramburii, Selys. ‘ (Hagen, Syn. Neur. N. A., 1861, 76.) . A small dragon fly with narrow transparent wings and | slender body, with several of the hind divisions of the abdo- men blue. Possibly the adult of one of the two following. Common on the vegetation about Lily, Long, and Broad Lakes. 2, Agrionina, nymph. A larva about .72 inch lode common in Long Lake. Chiefly brownish black. A pale, transverse band between the eyes, and a ring of minute, pale dashes at the hind margin of Animals of the Mississippi Bottoms near Oumey. 17 each abdominal segment. Legs chiefly white, a dusky band near the tip of each femur. Caudal respiratory appendages marked with broad, dusky cross bands; with a small spine at the apex of each, and with basal portion of edges spinose. 3. Agrionina, nymph. A short larva, less than .25 inch long, with banded legs and antennz, and a median dorsal pale line extending from head to end of abdomen. Possibly the young of the preceding, but I think not. From Wood Slough, August 6. 4. Gomphus, nymph. The larger examples of these young from Quincy are 1.10 inches long. The abdomen is greatly depressed, but is quite uniformly, though slightly, convex above. Palpus of labium with inner edge toothed to the base, distal tooth not longer - than the others. Front edge of labium without niedian tooth. The wing-pads do not quite reach the hind margin of the second abdominal segment. This agrees with Dr. Hagen’s No. 12 in his ‘Monograph of the Early Stages of Odonata.” Common. Localities : Quiney Bay, Willow Slough, Lily Lake, Broad Lake, Long Lake. 5. Gomphus pallidus, Ramb., nymph. Dr. Hagen gives as the important characters of the young of this species, the presence of a median tooth on the front edge of the labium, the presence of teeth along the whole inner edge of the labial palpus, a median dorsal spine on the hind edge of the 9th abdominal segment, and the presence of lateral spines on abdominal segments 7-9. It may be distin- guished from the two species here noted by the presence along the middle of the abdomen, above, of an obtuse ridge. Very common in some of the sloughs, and of large size, several meas- uring 1.20 inches in length. All those taken in August were apparently about ready to yield the winged form. Young of this species were taken in Cedar Lake in October, 1882. From the two observations it seems probable that the adults emerge 178 Illinois State Laboratory of Natural. History. in the latter part of summer, and that the young hatching from their eggs hibernate in the mud. From Harkness and Ballard Sloughs. 6. Gomphus notatus, Ramb., nymph. These young are like the two preceding in general appear- ance, but lack the median tooth of the labium of number 4 and the dorsal ridge of number 5. They differ from both of the preceding in having only about three blunt teeth on the inner edge of the labial palpi. The commonest Gomphus at Quincy. Of various sizes, some apparently ready to yield adults. This isthe Gomphus fluvialis of Mr. Walsh. Of the adult dragon fly, Mr. W. says that it flies constantly over water, and he thinks feeds exclusively on aquatic insects. It does not, as he supposed, breed exclusively in running water. Common. Localities : Willow Slough, Lily Lake, Broad Lake, Wood Slough. ; 7. Anax junius, Drury. The adult is one of our largest and commonest dragon flies. Its general color is obscure green, with some blue and black markings. Wings clear, with a yellow wash. The young are to be distinguished from all others taken at Quincy by the characters given at the beginning of this group. The very young are marked with wide transverse alternating bands of black and white. Taken only in Long Lake, although the adults were seen now and then about several of the sloughs. 8. Epiceschna heros, (Fabr.) Hagen. ; Two small nymphs, the largest one about .72 inch long, were taken in Wood Slough August 6. They were found clinging to dead sticks, depending apparently on their-dark, obscure colors for immunity from enemies. They agree in the main with Mr. Cabot’s description of the young uf this species. The antenne are of six articles, the distal one being longest. The labium is cleft, but lacks the tooth at each side. There are lateral spines on the abdominal segments 5-9, and most of the segments have a median dorsal ridge terminating in a tooth behind. Pe Ma 3 iv { ; ‘Animals of the Mississippi Bottoms near Quincy. 179 9. Libellulina, nymph. A stout-bodied, pale brown nymph with scattered specks and spots of brown. Legs annulate with brown. Segments 8 and 9 of the abdomen with large lateral spines; no dorsal hooks or tubercles. The digestive tubes of several examples contained a good many microscopic plants and animals, together with a brown granular matter which I think had been gathered from the bottom. Extremely common in the upper part of Cedar Creek ; the only young of this group taken there. 10. Libellulina, nymph. With a general resemblance to number 9, but rougher and the markings very obscure. A pair of tubercles between the eyes. A series of erect cultriform hooks on the middle of the abdomen, above. From the alimentary canal of one specimen a small mite was taken. Others examined did not contain food. Common and widely distributed. Localities: Harkness Slough, Ballard Slough, Willow Slough, Lily Lake, Long Lake, Broad Lake. il. Libellulina, nymph. Much like 10, but with smoother body, and lacks the cephalic tubercles. A distinct dusky bar between the eyes. _ Legs annulate with dusky. Dorsal spines not cultriform, and not elevated behind. Not as common as the two preceding. Localities: Lily Lake, Long Lake. 12. Libellulina, nymph. Similar to number 10, and possibly the young of the same _ species. Tubercles of head relatively much larger. Dorsal spines tuberculiform, erect. Body more slender, nearly uni- form blackish brown. Two small examples from Willow Slough. ee ere inn tin ah eatin) ial, aes ee Sok .> w — ORDER EPHEMERIDZ. (May F ies.) ‘The adults of certain species of this group are familiar to _ any one who has visited our rivers in July. They blacken the willows at the water’s edge and cause the limbs to droop, in 5) 180 Illinois State Laboratory of Natural History. such quantities do they collect upon them. In the evening, at times, they mount into the air, and may be seen in countless numbers moving for hours in one direction asif bent on migra- tion. They are excellent food for fishes, as is attested by the avidity with which many of our fishes eat them, and were used as bait by sportsmen in the days of Isaac Walton. The winged insect takes no food, and lives only for procreation, but may, in confinement, live a week or more. The eggs are dropped into the water or are placed upon plants, the flies descending into the water for this purpose. The larve (nymphs) devour earth and sand containing dead and living animal and vegeta- ble matter. Hexagenia bilineata, Say. This is the common brown May fly of Illinois rivers and lakes. It occurs throughout the length of the State, and often in such multitudes as to have acquired the name “mormon fly.” It is commonly very abundant in the middle of July. In Au- gust, at Quincy, it was rare. Hexagenia, nymph. An elongated, whitish creature,‘to be distinguished from most other aquatic insects by the presence of seven pairs of branchiz, six of them plumose, attached along the sides of the abdomen and carried turned over the back. Jaws long and curved; front with an obtuse tubercle. Compound eyes, round, black; legs strong, suited to digging; abdomen terminating in three plumose stylets. Length of largest example taken at Quincy 1.20 inches. The food consists of earth richly charged with dead organic matter and with unicellular plants and ani- mals. Such protozoans as Euglena are quite commoninit. A large part of the contents of the digestive tube is sand, which seems to be taken incidentally. This is, in all probability, the young of H. bilineata. It was common in Broad Lake; but elsewhere it was not often taken. Localities: Willow Slough, Lily Lake, Long Lake, Broad Lake, Wood Slough. Animals of the Mississippi Bottoms near Quincy. 181 Cenis, nymph (1). A small brown form with three long, fringed caudal ap- pendages, and with the respiratory appendages on segments 1-5 of the abdomen; those on segments 3-5 concealed by the plate-like pair of the second abdominal segment. First respira- tory appendages small, erect, not concealed. Head without conical tubercles. Autennz, legs, and caudal appendages white, with brown annuli. A few examples were taken in Willow and Wood Sloughs. Cenis, nymph (2). A second small nymph, from Willow Slough, has three prominent conical tubercles on the head which agree very closely with those of the European species C. luctuosa, as figured in Mr. Katon’s monograph of this group of insects. Our insect differs in having the prothorax narrowed towards the front; and in certain other characters does not quite agree with Mr. Eaton’s description of the genus. ARACHNIDA. (Sprprers anp Mrrss.) Tetragnatha grallator, Hentz. (Hentz, Bost. Jour. Nat. Hist., vi, 26, Pl. iv, figs. 1 and 2.) A small, slender-bodied, long-legged spider, large examples of which are .50 inch in length. Extremely common about the sloughs and lakes, often living over the water, exposed on dead stems and branches. It was sometimes brought in by the small seines in situations such that it seemed it must have been in the water. Its food- probably consists of small gnats. Arrenurus sp. A pale water mite with long ciliated legs was frequently taken by surface nets in the deep water of the bay. It is, I believe, a river species. VERMES. ( Worms.) This group is not of the same importance to fish culture as are the crustaceans and insects—unless it be as parasites— and we shall not give those observed at Quincy more than a passing notice. 182 Tilinois State Laboratory of Natural History. One of the most interesting of those noticed is a small cy- lindrical worm with a retractile caudal disc from which arise four ciliated tentacles. It lives in great numbers in tubes on the under side of lily pads in Lily Lake, and when undisturbed lies with the hind end of the body out of the tube and, with the disc and tentacles expanded, sways slowly about. It will probably prove to be Dero intermedius, Cragin, though it is questionable if this is more than a variety of D. digitata, Mull. Leeches which I have provisionally separated as five species | were taken from the sloughs. All appear to belong to the genus Clepsine. Several of them were very common, being brought in on the shells of turtles, and at other times appar- ently attached to fishes, Quite a variety of rotifers were observed, but none of special interest except the large and beautiful Conochilus volvox, colonies of which, consisting of a dozen or more individuals, were common in the open water of the bay, where they could always be taken in surface nets drawn after a skiff. Plumatella arethusa, Hyatt. (Hyatt, Observations on Polyzoa, 95. ) One of the branching polyzoans was very common in most of the pools, sometimes on sticks, on the under-side of stones, and, in Lily Lake, on the under side of the lily pads. The statoblasts were frequently noticed scattered among alge and rubbish. Hyalinella vesicularis, Leidy. (Plumatella vesicularis, Leidy, Proc. Acad. Nat. Sci. Phil., © vii, 192.) A single example of a small colony from Libby Lake, is re- ferred to this species with some doubt. Pectinatella magnifica, Leidy. (Cristatella magnifica, Leidy, Proc. Acad. Nat. Sci. Phil., v, 265.) The large masses of gelatinous matter so common in “back water” in this region, are formed by the colonies of this poly- Animals of the Mississippi Bottoms near Quincy. 183 zoan. The animals themselves are on the outside of the masses and constitute but a small part of the bulk of each mass. In the upper part of the bay, in the inlets and mouths of sloughs, this animal was very abundant. As the water sub- sided the masses were often exposed, and were left in numbers to decompose in the air. One of the largest masses seen measured 16.50 inches in greater diameter by 12.50 inches in lesser diameter, with an average depth of about six inches. Small spindle-shaped colonies were common on the stems of dead weeds along the margins of the lakes. The shape of the colony seems to depend entirely on the character ofthe object upon which itis established. I could not see that fishes, or indeed anything else, fed upon the gelatinous material. Repro- duction both by statoblasts and by eggs was in progress in August. CQLENTERATA. Hydra fusca, Trembley. These small animals are the closest allies of the corals and sea anemones of salt water, which our streams and lakes furnish. They are, when extended, about .25 inch long, and consist of a tubular body with acircle of tentacles about the one opening, the mouth. They are commonly found attached by the end opposite the mouth to plants and other submerged objects. I was surprised to find them on one occasion in Wood Slough in considerable numbers, and took others with the surface net in the bay, where they must have been floating at the surface. Those taken in Wood Slough, Aug. 4, were multiplying very rapidly by budding. The food consists of small animals which are captured by the tentacles. PROTOZOA. Notwithstanding their minuteness, the protozoa are of considerable importance as fish food, and are probably still more useful indirectly, since they constitute a large share of the food of insects. At Quincy the animals of this group varied with the veg- etation in the water. Where the plants were common, a variety 184 Illinois State Laboratory of Natural History. of species and an abundance of individuals might be expected, In the river they were very rare. In the deeper water of the bay they were not as common as at its edges, among the wood rafts and the barges. They were most common in the stagnant water of the lakes. Such genera as Ameba, Difflugia, Cen- tropyxis, Actinosphzrium, Vorticella, and Kuglena were abundantly represented. In Lily Lake a species of Pyxicola attracted attention from its abundance. It was noticed in the alimentary canal of the singular Dero mentioned above. Two protozoans are especially deserving of mention here. The elongated green Huglena viridis was always to be found in water dipped up at any place in the bay. When the wind blew toward the west shore for anumber of hours together a dense coherent green scum was observed to collect in the inlets and mouths of sloughs, and under the microscope this was found to consist largely of the contracted, spherical Kuglene. When placed under the cover glass of the slide they soon be- come active again. Fishes and other animals could, and prob- ably do, at such times collect them in quantities for food. The second protozoan is Arcella discoides, which occurred in num- bers with the Euglenee. _ Articte X.—WNotes on Illinois Reptiles and Amphibians, includ- ing several Species not before recorded from the Northern States. By H. GARMAN. Emys meleagris, Shaw. This fine turtle was as late as 1870 rather common about water on the prairies of central Illinois. It is now very rare, only one example having been taken by me in the past six years. Chrysemys belli, Gray. Very common in the sloughs of the bottom-land at Quincy. It has not been taken elsewhere in the State. Closely related to C. marginata, but I have not seeu in many hundred painted turtles examined during eight years’ collecting, an intermediate example. The species is not included in Dr. Jordan’s Manual of Vertebrates of the Northern United States. Chrysemys marginata, Ag. Very abundant in ponds and lakes throughout Illinois. It is much like C. belli, but may be distinguished by the different ‘markings of the plastron. It has probably been mistaken for the eastern C. picta, a species which has been recorded from Illinois, but which I am inclined to believe does not occur in the State. Pseudemys troosti, Holbr. Not common anywhere within our limits. Three fine ex- amples taken by the writer from a pool on an island in the Mississippi River at Quincy are the only ones in the State Lab- oratory collection. It occurs also in the lower Wabash region. Pseudemys concinna, LeC. This is a southern terrapin closely related to the edible P. rugosa. A fine large example was seut me some years ago from Mt. Carmel, Ill., where it was captured by my friend, Dr. J. Schenck. Several others have been observed in the same locality. The extralimital distribution of the species includes all the States from North Carolina to Texas. It occurs also, according to Prof. Louis Agassiz, in Arkansas and Missouri 186 Illinois State Laboratory of Natural History. The Illinois example, a large, finely-developed one, is abnormal in the possession of a pair of symmetrical supernumerary mar- ginal plates, one on each side of the nuchal plate, making thirteen for each side and twenty-six in all. The serrated mandible will distinguish the species from the P. hieroglyphica, which also occurs at Mt. Carmel. Not mentioned in Dr. Jordan’s Manual of Vertebrates. Malacoclemmys lesueuri, Gray. Very abundant in all our rivers, where it is known as the mud turtle. The head of this turtle is rather small, and the jaws are narrow compared with those of the next species. It may always be distinguished from M. geographicus by a comma- shaped yellow spot behind each eye. In some examples these may be isolated, but in that case their transverse position is characteristic. There is no tympanal stripe like that of the next species. The dorsal plates are sometimes said to be imbricated, but this is hardly exact, since the sutures between the plates are always visible. The food of examples taken from bottom-land pools at Quincy in 1888, consisted largely of the bulbs of a sedge which Prof. T. J. Burrill thinks is Cyperus phymatodes. Occasional remains of mollusks and crayfish were also noted in stomachs. Malacoclemmys geographicus, LeS. Equally common with the preceding and frequenting the same waters. Very different from M. lesweuri when adult, and easily distinguished at all stages. The head of fully grown examples is as large as that of snapping turtles of the same size. The alveolar surfaces of the jaws are greatly expanded, those of the upper jaw forming elevated tables into which the palatine bones enter largely, and which have sharp inner mar- gins which almost meet at the middle line. The characteristic marks are a spot of greenish yellow behind each eye, which is isolated and directed longitudinally, and a stripe of the same color which originates on the tympanum and extends down- wards, then backwards, upon the neck. The great expansion of the jaws is related to the food habits. An examination of numerous stomachs shows it to feed upon mollusks. Illinois Reptiles and Amphibians. 187 Ophisaurus ventralis, Linn. Formerly common on the prairies of the central part of the State, but now being rapidly exterminated there by the close grazing and cultivation of the land. Still rather common in southern Illinois. Oligosoma laterale, Say. Occasional in Southern Illinois. Agkistrodon piscivorus, Holbr. Extremely common in bottom-land pools along the Missis- sippi River in southern Illinois. Coluber constrictor, Bd. & Gir. The prairie form of this species is of a dull slate-color above, becoming blue on the sides and belly. It is known everywhere as the blue racer. In southern Illinois the more slender black variety is common. The “ black snake” of the prairie regions is very frequently a different species,—the Hlaphis obsoletus. Eutenia radix, Bd. & Gir. In the latest edition of his Manual of the Vertebrate Ani- mals of the Northern U. 5., etc., Prof. Jordan gives the distri- bution of this serpent as “Wis. to Oregon.” It is certainly very common in the central part of Illinois, as far south as Champaign county. I have not seen it in Kentucky. Tropidoclonium lineata, Hallowell. This is the type of Hallowell’s genus Microps ( preoccupied ) and of Cope’s genus Tropidoclonium. The anal plate is entire, while in Regina kirtlandi, a species often placed in the genus Tropidoclonium, it is divided. Three examples were taken at Urbana, Illinois, in April, 1889. The largest of these meas- ured 133 inches in length, and was thus considerably larger than the example from which the original description was drawn. The three examples from [llinois differ from Hallo- well’s type in that the eye is above the third supralabial plate, not above the third and fourth. Head small, not marked off from the body. Eye very small, One nasal plate, grooved below the nostril. Loreal present. One anteorbital; two postorbitals; two small internasals; two prefrontals. Frontal longer than broad, sides nearly par- 188 Illinois State Laboratory of Natural History. allel. Six supralabials (seven on one side in one of the exam- ples), third and fourth largest, eye above the third, the fifth crowded away from the margin. Dorsal scales in nineteen rows, three outer rows with scales smooth and shining, first row with no caring, second row with very faint carine. Ven- trals 138-150. Subcaudals 26-34 pairs, the first number being — from an example in which the tail was probably imperfect. Color above dark brown, with a gray stripe one and two half scales wide extending from occiput to tip of tail. Three outer rows of scales gray, each scale of the first row with a black spot at base. Head olive brown above; supralabials gray. Be- neath ranging from whitish in small examples'to gray in the largest one. Each ventral plate of the largest example with a transverse black spot in the middle of its base, each spot after the first ten or so, notched behind at its middle. Towards the vent the notches grow deeper, and a short distance before. it, separate the spots into two. In the smaller examples these spots are all divided. Subcaudals, each with a black basal spot in the largest example; wanting in the smaller ones. This is not the first record of the occurrence of this serpent north of the Ohio River. In Dr. Yarrow’s list of the reptiles and batrachians in the United States National Museum, I find “Hughes, Ohio,” given as the locality for an example. It bears a superficial resemblance to species of Storeria. Not mentioned in Dr. Jordan’s Manual of Vertebrates. Hydrops abacurus, Gray. A fine example of this beautiful serpent is in the State Laboratory collection from Union county. y Rana palustris, LeC. The only examples which I have seen fast the State were | collected by me some years ago in the western part of Union county, in southern Illinois. They differed from all the east- ern examples I have examined, in having the two central longi- tudinal rows of spots completely fused in two broad stripes. The species does not occur on the prairies. Rana pipiens, Schreber. This is the R. virescens and R. halecina of authors. The prairie variety is of a decided green above, with large spots oe. f wee ——aw —s SS ee ee ee ee ee Illinois Reptiles and Amphibians. 189 encircled with white. The vocal sacs are very small, and no evidence of their presence is visible from without. The note is a low gutteral croak quite unlike that of the eastern variety, as described by Prof. EK. D. Cope (Standard Natural History). In southern Illinois and along the Mississippi River is a variety generally of a coppery color with small spots, the anterior of the three, so conspicuous on the head of the prairie variety, being generally wanting. Hyla cinerea, Schn. An example of this beautiful tree-frog was taken from lily pads at the edge of Bluff Lake, Union county, Illinois, some years ago. Judging by the frequency with which the peculiar bell-like note was heard at the time, the species is common in the locality. The single example taken conforms more closely with the variety semifasciata than with the type forms of the species. It differs from the latter in its greater size, and in that the lateral pale stripe terminates on the middle of the side. . It is not mentioned in Dr. Jordan’s Manual. Chorophilus triseriatus, Wied. This is the characteristic prairie “tree-frog.” It is always found upon the ground or in the water, and never, as far as [ have observed, mounts upon vegetation. It occurs in very great abundance in ponds and ditches in early spring, being the first of the ecaudate forms to appear. The most nearly musical of all our amphibians. Bufo lentiginosus, Shaw. Two very different varieties of this species occur in Illinois. On the prairies is found a large sluggish toad which gathers in great numbers in the ponds after the salamanders and tree-frogs are gone. Its skin is extremely warty, and the ventral surface is mottled with black, often so closely as to give the prevailing color. Its note is a high prolonged trill. In the south part of the State is a more active toad with a smoother skin and white ventral surface, with at most a black spot on the chest. The note of this variety is a singular squawk which it is hardly possible to representin words. This variety is the only toad which occurs in Kentucky. I have seen no inter- gradation of the two, and am inclined to think they may be 190 Illinois State Laboratory of Natural History. distinct species. The northern form is probably the B. lentig- inosus, var. americanus, and the southern form the var. /en- tiginosus of authors. Diemyctylus viridescens, Raf. Rather common in southern Illinois, but never observed on the prairies of the central counties. The relation of D. viridescens and D. miniatus as forms of one species appears to have been conclusively established by several observers. Amblystoma microstomum, Cope. Not rare in the prairie ponds in spring, becoming com- moner eastward. A good Amblystoma. Amblystoma tigrinum, Green. This is the commonest salamander of the temporary ponds on the prairies of Illinois. Thousands collect in these to breed, as soon as the snow disappears in spring. The shallow water sometimes freezes after they have resorted to it, and many are then destroyed. The eggs are laid in large masses attached to dead vegetation. The very young are provided with ‘“balan- cers” like those of the related A. punctatum. Fully grown exam- ples still retaining rudiments of branchiz and the imperfect tongue of the larva are sometimes taken, a condition probably to be accounted for by the fact that the eggs are occasionally deposited in waters from which the young cannot readily escape. It is just possible that the larval characters might be retained by this species indefinitely in case of an enforced residence in the water. ArticLe XI.— Descriptions of new Cynipide in the Collection of the Illinois State Laboratory of Natural History*. By C. P. Griuerte, of the lowa Experiment Station. FAMILY CYNIPIDA. SUBFAMILY CYNIPINA. GENUS DIASTROPHUS Hartta. D. scutellaris n. sp. GALL-FLY.— Female.—Head, thorax, and scutellum black; mandibles, antenne, legs, and abdomen yellow-rufous. Length, 3mm. Head black, shining, face coarsely striate and sparsely haired, frontal carina rather prominent and striate, a deep groove extending up on the front, from between the antenne, containing the middle ocellus at its upper end, the ridges or carina on either side of the groove finely aciculate, the outer ocelli borne on the summit of the vertex, the latter shining and having a few punctures in the vicinity of the ocelli; occi- putaciculate. Thorax: collar covered with a growth of rather long hair, mesothorax black, polished, and covered with a net- work of microscopic depressed lines, humeri coarsely aciculate * The following descriptions of new Cynipidz were made during a recent vacation visit at the Illinois State Laboratory of Natural History, and it is through the kindness of the Director, Dr. S. A. Forbes, and Hon. R. P. Speer, Director of the Iowa Experiment Sta- tion, that I am permitted to publish them in this Bulletin. I wish here to express my most hearty thanks to Dr. Forbes for the free use allowed me of the library, collection, microscopes and other laboratory equipments during my visit, and also for the excel- lent cuts made under his direction to illustrate the present paper. _ Mr.C. A. Hart and Mr. John Marten I have to thank for many favors ‘received, Types of all the species here described may be found in the col- lection of the Laboratory. 192 Illinois State Laboratory of Natural History or wrinkled, pleurz finely aciculate and rufous in color. The parapsidal grooves and median groove are broad and very deep near the scutellum, but become narrower and shallower as they extend forward; the parapsides extend to the collar, but the median groove disappears on reaching the posterior ends of the two parallel lines extending back from the collar. The lateral orooves* are very distinct. Scutellum bifoveate, coarsely sculpt- ured, and remarkable for being much drawn out posteriorly. The length of the scutellum is nearly equal to the distance from the scutellum to the collar. Abdomen entirely yellow- rufous, 2d segment occupying about one half of the dorsal sur- face, 83d segment about two thirds as long as the 2d, follow- ing segments very narrow; surface polished, impunctured. Feet, including coxe, entirely yellow-rufous. Wings hyaline or very slightly smoky, radial nervure very distinctly bowed, the tip beg thrown towards the costa; 1st and 2d transverse nervures very heavy, the usual dark stain at the base of the radial nervure present, areolet medium. Described from a single female taken by sweeping in a wheat field 20th May, 1884. Accessions number, 1881. Illinois. Gall unknown. GENUS ANTISTROPHUS WALSH. A. silphii n. sp. Gatis.— Abrupt sub-globular swellings from 1 to 1? inches in diameter at the tips of the stems of Si/phiwm integ- rifolium and perfoliatum (Plate [X., Fig. 1). The inner por- tion of the gall is made up almost entirely of a rather dense pithy material that cuts with some difficulty. Interspersed — through the gall are numerous oval larval cells, and also open spaces or cavities that do not contain insects. (Plate IX., Fig. 2.) The larval cells are not woody, as is usually the case in cynipidous galls, but their walls are of pith like the sur- rounding gall substance. * The short grooves starting on the mesothorax at a point near the outer angles of the scutellum and extending outside of the parap- sides to a point about opposite the bases of the wings, I shall term lateral grooves in these descriptions to distinguish them from the other lines of the mesothorax. Descriptions of New Cynipide 193 These galls are very common in the vicinity of Champaign, Ill, on stems of Silphiwm integrifolium, and Mr. Hart had collected similar galls at Normal, Ill., from S. perfoliatum, from which flies were reared that were in every way identical with those from galls of the other species. GaALL-FLy.—Female.— Black, head and thorax opaque, ab- domen shining, antennee, except first two joints, spot on man- ‘dibles, and anterior and middle pairs of tibiz, ferruginous or dusky ferruginous. Length, 3-4 mm. Head: Face deeply and densely striate, median ridge, below the insertion of the antennez, densely and finely sculptured but not striate; gene, vertex, and occiput densely sculptured, the sculptures being in the form of minute shining pits, as seen under a power of 70 diameters. J'horax-: collar and mesothorax finely and deeply sculptured, parapsidal grooves distinct, median . groove broad at scutellum and traceable to collar, lateral grooves distinct, all of the mesothoracic furrows sculptured at the bottom. The two parallel lines running back from the collar appear smooth and shining. Scutellum_ bifoveate, coarsely wrinkled posteriorly and finely and densely sculptured throughout, including the bottom of the fovew and the spaces between the wrinkles; pleurze opaque and sculptured like the mesothorax but less deeply. Thesculpturing of this insect may be described as a net-work of raised lines euclosing smooth shin- ing spots. Abdomen piceous black, polished, 2d joint occupying one half of the dorsal surface, 3d joint one half as broad as the second, succeeding joints to 7th usually plainly visible, 4th and succeeding joints finely punctured. A power of 70 diam- eters shows slight punctures on 3d segment -also. Antenne 14-jointed, rufous, except the first two joints, which are usually black, but sometimes inclined to rufous, joints 1 and 2 stout, joints 3 and 4 equal in length, last joint once and a half as long as the preceding, length of entire antenne 2-4 mm. Wings’: hyaline, radial cell open, radial nervure reaching costal margin, all the nervures very slender, areolet wanting. The entire insect is very free from pubescence. The male differs from the female by being but 2? to 3 mm. in length, on account of its smaller abdomen, and by having 194 Illinois State Laboratory of Natural History the last joint of the antenne as long as the two preceding joints. Described from 60 bred specimens bearing accessions num- bers 1928, 5206, 15605, and 15665, all from Illinois. The flies live over winter in the galls and emerge from them during the months of May and June of the following year. A. laciniatus n. sp. Gatis.—Individual galls are egg-shaped, from 4 to 5 mm. in length, and occur in clusters un the receptacles of the flowers of Silphium laciniatum. (Plate IX., Fig. 8.) Mr. C. A. Hart has collected a number of these gall-clusters and in description of them says: ‘‘ They always occur in well-ripened, healthy- looking flower heads, but do not show until the weather has removed the uninfested flowerets. They are always produced in the sterile flowers of the disk, towards the center.” GALL-FLY. — Female.— Head and thorax opaque black, abdomen shining rufo-piceous, antenne black; length, 3 mm. Head: face between eyes and mouth rather coarsely acicu- late, median ridge with a few coarse punctures or pits, entire surface of head finely and densely sculptured, as in the preced- ing species, middle ocellus at the upper extremity of a broad furrow extending up from the antenne, the two outer ocelli on the summit of the vertex, mandibles rufous on median portion. Antenne black, 13-jointed, joints 3 and 4 equal, last joint al- most as long as the two preceding; length, 2.3mm. Thorax, including scutellum, as in the preceding species. Abdomen - rufo-piceous, polished, rather globose, 2d segment occupying scarcely more than one third of the dorsum, 3d segment broad, 3d and succeeding segments densely punctured. Wings hyaline, pubescent, nervures very light, areolet wanting. ef, includ- ing coxe, black; tip of femora, tarsi, and anterior tibiz rufous. Male.— Length, 2 mm.; antenne 14-jointed, as long as the body ; abdomen black, 2d segment occupying fully one half of the dorsum ; otherwise as the female. This species is easily distinguished from A. sil/phii by the black antennze, which are 13-jointed in the female, by its much Descriptions of New Cynipide 195 less robust thorax, by its more globose abdomen, and by having the third abdominal segment densely punctured. Described from three males and three females bred from galis collected at Champaign, Ill., by Mr. John Marten. Ac- cessions number, 15073. A. rufus n. sp. While looking through the Laboratory collection for Cy- nipidz I was much interested in finding a vial containing a section of a stem of Silphiwm laciniatum and a number of two species of Cynipide bred from it. There was not the slightest indication of a gall upon the stem, and it was found that the flies had emerged from little cells in the pith exactly like the cells in the pithy substance of the galls of A. silphii, above described. In company with Mr. C. A. Hart I visited fields where this species of Si/phiwm was growing, and we found that the majority of the stems were more or less infested with cy- nipidous larvee, hundreds of which could, in some cases, be Found in a single stem; but in no case was there any indication of the formation of a gall. An illustration of a stem contain- ing these cells is given at Fig. 4,(Pl.1X). After finding the stems of Silphiwm laciniatum so vouch infested, we pushed our investigations farther and found similar larval cells abundant in Silphium perfoliatum, S. terebinthinaceum, and S. integri- folium. Whether the flies when bred from these stems will all prove to be one or the other of the two species here described, cannot yet be told. GALL-FLY.— Female.— Color, rufous; vertex, mesonotum, and scutellum black ; head and thorax opaque; length, 3 mm. Head and thorax minutely sculptured throughout as de- scribed in the two preceding species, face finely aciculate be- tween eyes and mouth, vertex and the portion of the occiput immediately back of it black, tips of the mandibles infuscate, the remainder of the head rufous. Antenne 13-jointed, 4th joint a trifle longer than the 3d, the last joint as long as the two preceding and bearing a connate suture that in some po- sitions makes it appear to be two joints, rufous in color, and 2 mm. in length. Thorax: parapsidal furrows extending to col- lar, median groove not quite reaching the two parallel lines from . 4 196 Illinois State Laboratory of Natural History collar; lateral grooves distinct. The median portion of the pleurz appears finely aciculated, but they are finely sculptured throughout. Scutellum bifoveate and more coarsely sculptured than the mesonotum but not wrinkled like the two species just’ described. Fovew broad and shallow and sculptured at bottom like the rest of the scutellum. Abdomen dark rufous, almost black above, 2d segment occupying somewhat less than half of the dorsum, apical portion of 3d segment feebly punctured, fol- lowing segments, except 7th, more strongly and densely punct- ured, 7th segment covered with a net-work of fine lines but no punctures. Wings hyaline, nervures, except the two transverse, very slender, areolet wanting. eet, including coxe, entirely rufous, tibize of the hind pair in a few cases rather dark. Male.—Length, 2.2 mm., 2d abdominal segment occupying half of the dorsum, antennz 14-jointed, last segment once and a half as long as the preceding; otherwise as female. Described from numerous bred specimens from alcohol; accessions number 5500. Illinois. A. minor n. sp. Bred from the same stem of Silphium as the preceding species and about half as numerous. Gatu-FLy.—At first sight the flies of this species appear to be miniatures of A. rufus, but there are structural differences that make it necessary to give them a separate description. They differ from rufus as follows: Length of females 2 mm., of males 14 mm.; collar deeper rufous. The most apparent structural differences are in the mesothorax and scutellum. The parapsidal and median ~ grooves in minor do not appear as sharply defined furrows but only as broad slightly depressed lines with sloping sides. The fovee of the scutellum are rather deep at base, extend far back, and are not separated by a sharply defined septum but by a broad slightly elevated ridge. The scutellum is also longer in proportion to its breadth and is perceptibly narrowed at the sides, about midway of the length. Accessions number, 5500. Descriptions of New Cynipide 197 A. bicolor n. sp. GALL-FLY.— Female.—Head and thorax opaque black, abdo- men and antenne rufous; length, 3mm. Head black, finely and densely sculptured, mandibles except tips rufous, face between eyes and mouth coarsely aciculate, frontal ridge rather prominent, ocelli in nearly a straight line. Antenne dark rufous, 13-jointed, 3d and 4th joints equal in length, 13th joint about as long as the two preceding taken together. Thorax, including pleure, densely and finely sculptured, parapsidal and median furrows distinct and extending to the collar, lateral furrows and two parallel lines plainly marked. Scutellum sculptured like tne meso- notum, bifoveate. Abdomen rufous, polished, 2.1 segment occu- pying a little more than one third of the dorsum, 3d seg- ment very broad, and microscopically punctured on apical portion, succeeding segments to the 7th all exposed and rather densely punctured as seen under a power of 70 diameters, venter rather prominent, and ovipositor sheaths projecting slightly. eet: the tarsi, tibiz of front pair, and joints of all the legs are more or less rufous, the remaining portions black. Wings hyaline, radial cell open, all the nervures, except the two transverse, very weak, areolet entirely wanting. Described from a single specimen from Normal, I[Il., ac- cessions number 2584. Gall unknown. GENUS ACRASPIS Mayr. A. compressus n. sp. GaLL.—Small sub-globular bodies from 2 to 3 mm. in diameter attached to the under side of the leaves of the red oak, Quercus rubra, in the fall, about the time the leaves are beginning to turn brown. The galls appear like wax, and are either pure white or tinged with red while on the leaves, and when cut into are fleshy and juicy like a potato. The galls fall to the ground with or a little before the leaves, and each develops a single larva which gets its growth in the fall but does not emerge until the following summer. Only a very thin shell of the gall is left after the fly emerges. 198 =~{ Illinois State Laboratory of Natural History oe en GALL-FLY.—-Females.—Head and thorax rufous, abdomen black, head nearly twice as broad as thorax, the latter very small and narrow, abdomen very much compressed and, when viewed from the side, appearing twice as large as the head and thorax together. Head: face and genz reddish brown, vertex and occiput dark brown, mandibles black, clypeus punctured and with few hairs, the entire head covered ‘with a net-work of depressed lines; ‘antennz rufous, 14-jointed. Thorax very small and narrow, seeming, when viewed from above, out of all pro- portion with the comparatively large and very broad head; sculptured like the head without the usual furrows; scutellum yery narrow and much elevated posteriorly, and appearing, when viewed laterally, in the shape of a crow’s beak; a shining transverse groove but no fovew at base. Abdomen very strong- ly compressed, not broader in the thickest part than the thorax, shining black in color with some rufous at base, free from hairs or punctures, as deep as long, its length compared with that of the entire insect being as 3 to 5 and the 2d segment occupying fully two thirds of the dorsum. Feet dark reddish brown. Wangs entirely wanting. Described from two specimens cut from galls taken at Ames, Lowa, where they are common. GENUS DRYOPHANTA Forst. D. lanata n. sp. Gaxtis.—During late summer and autumn the galls of this species are found on the under side of leaves of Quercus rubra and .Q. coccinea, appearing externally as little bunches of compact brown wool (PI. IX., Fig. 5), and hardly. distin- guishablein outward appearance from the galls of Andricus flocet Walsh. The galls seldom occur singly, but usually in clusters of from four to eight. A cluster of eight galls when fully grown will measure about $ of an inchin width by 2 of. an inch in length. An individual gall when denuded of its covering is in the form of an irregularly shaped cone with a bulging base, the diameter of the base being three or four sixteenths of an inch, which is nearly twice the height. PA IBY 1X: SRO Er ee Deseriptions of New Cynipide 199 The galls fall to the ground in the autumn in advance of the leaves, and the flies emerge the following summer. The galls are abundant at Ames, Lowa, and i have taken a number in the vicinity of Champaign, Ill. GALL-FLy.—A robust, black species, with more or less rufous on face, mesonotum, scutellum, and sides of abdomen. Length, 34 to 4 mm. Head: Face scabrous, shining, with very few hairs; vertex black, sub-opaque, finely and densely sculptured; ocelli consid- erably elevated, clypeus polished, emarginate, punctured; an- tenn black, 14-jointed (in one specimen 13-jointed), a trifle over 2 mm. in length; joits 1 and 2 stout, the latter sub- globular, joint 3 one third longer than joint 4, last joint scarcely longer than the preceding. Thorax: mesothorax covered with a fine net-work of depressed lines leaving irregular raised portions that are highly polished, parapsides narrow but — well defined, polished at the bottom and reaching the collar, median groove showing plainly at scutellum but soon disap- pearing as it runs forward; the two parallel grooves from the collar narrow at first, then spreading out in broad furrows with sloping sides traceable about one third of the way to the scutellum; lateral grooves plainly marked, extending well forward, and approximating the parapsides at their anterior extremity; pleure finely aciculate and shining. Scutellum bifoveate, the fovee shallow, separated, not by a septum, but by a number of polished raised lines that run into the smooth surfaces of the bottoms of the fovex; lateral bor- ders of the scutellum strongly aciculate anteriorly, the lines becoming crooked and broken posteriorly and forming a densely and deeply rugose surface; scutellum black at base and tip and rufous in the middle. Abdomen dark rufous to almost black, 2d segment occupying one half of tergum, posterior half of the second segment and all of the following segments rather densely punctured, all of the segments highly polished. Feet uniformly colored, very dark rufous to almost black. Wings hyaline, rather densely ciliate, 4mm. long, submedian and Ist and 2d transverse nervures stoat and black, areolet medium. Described from two bred females from galls taken at Ames, Lowa. Male unknown. 200 Illinois State Laboratory of Natural History GENUS CHILASPIS Mayr. C. ferrugineus n. sp. This genus has hitherto had no recognized representative . in this country. Dr. Gustav Mayr, in his paper on * Die euro- piischen Arten der gallenbewohnenden Cynipiden,” gives a sin- gle species, C. nitida Gir., for Kurope. Giraud’s species is given as producing galls on the leaves of Quercus cerris, while the spe- cies here described is either a guest or a parasite, as two of them were captured in the act of ovipositing in immature galls, one of Dryophanta lanata, described above, and one in a very similar gall of an undescribed species; both were taken 1st Sep., 1890, at Ames, Iowa. I have never seen a specimen of C. nitida, and it is possible that the species here described will require a new genus, but by the use of Mayr’s synopsis these flies are readily traced to Chilaspis. Frirs.—Females.—General color yellow-rufous, abdomen shading into black on apical dorsal portion, tips of mandibles black, posterior tibize and tarsi somewhat infuscate, length 2 mm. Head: face finely rugulose and having the appearance of being covered with scales like the body of a fish, a few scatter- ing hairs, clypeus in the upper and middle portion sculptured like the rest of the face but with a broad polished margin below, mandibles punctate, vertex and occiput covered with a fine net-work of depressed lines and blackish in color; antenne 13-jointed, 8d and 4th joiuts equal in length, last joint twice as long as the preceding, ferruginous, reaching to the middle of the abdomen. Thorax: mesothorax ferruginous, quite dark in one specimen, sculptured like the face, parapsides distinct throughout but in the middle showing as broad shallow grooves_ without well-defined sides, median groove absent, parallel lines from the collar plainly marked, lateral grooves distinct and reaching to opposite the bases of the wings; pleurw covered with a net-work of slightly raised lines; scutellum with pol- ished basal groove crossed by many shining ridges, coarsely rugose posteriorly and with a narrow blackish rugose margin; metathorax coarsely rugulose and with three longitudinal Descriptions of New Cynipide 201 carinz running to the base of the abdomen. Abdomen, with 2d segment occupying fully half of the dorsum, 3d segment about one third as long as the 2d, seven segments visible, ovi- positor sheaths projecting above the dorsum, venter consider- ably extended posteriorly, the last two characters reminding one of Ceroptes sp. Wangs hyaline, with distinct dusky patch surrounding the second transverse nervure, radial cell entirely open, the radial and subcostal nervares ending abruptly just before reaching costal margin, the subcostal, radial, and first and second transverse nervures stout, the others very slight, the areolet, consequently, rather faint but of medium size. Described from two females taken while ovipositing in galls as above mentioned and one specimen captured at large; all from Ames, Iowa. GENUS AULAX Hartica. A. bicolor n. sp. GALL-FLY. — Female.— Head and thorax black, feet and abdomen yellow-ferruginous; length 24 mm. Head black, shading into rufous between the eyes and mouth, mandibles except tips rufous, face finely wrinkled, vertex and occiput finely sculptured, the sculpturing of the genz making them appear to be covered with scales like the body of a fish, ocelli on a flat or somewhat depressed surface; antennz dark rust-brown, darkest toward the tips, 13-jointed, joints 3 and 4 equal in length, last joint as long as the two preceding. Thorax black, shoulders rufous, mesothorax finely sculptured, opaque, clothed with sparse recumbent pubescence, parapsidal grooves very distinct and rather deep, median groove very short and much broadened at scutelium so as to be almost triangular. The lateral grooves appear as polished lines only, and the two parallel lines from the collar are rather indistinct; pleurz densely and rather coarsely aciculate. Scutellum black, with two small, shallow, oblique fovex, rather coarsely rugose, the surface somewhat obscured by pubescence. Abdomen rufous, shining, 2d segment occupying about one third of dorsum, 3d joint a little more than half as iong as the 2d, fol- lowing joints to the 7th gradually shorter, joints 3-7 inclusive 202 Illinois State Laboratory of Natural History finely punctured. eet, including coxe, of the same color as the abdomen. Wangs hyaline, rather densely ciliate, radial cell closed, areolet medium. Described from two females, one taken in a wheat field at - Mt. Carmel, Ill., 27th May, 1885 (accessions number 1781), and one taken at Champaign, 9th July, 1885 (accessions number 6422). SUBFAMILY INQUILINZA. GENUS SYNERGUS Harrie. S. magnus n. sp. Head rufous-yellow, vertex and thorax entirely black, abdomen rufous-yellow, except a narrow black stripe along the tergum of the 2d segment, feet light yellow, except the tibiz and tarsi of the hind pair which are infuscate; length 4 mm. Head: face coarsely striate, vertex and occiput micro- scopically rugulose and with broad punctures; antenne black, as long as the insect, 15-jointed, 3d joint but little longer than the 4th. Thorax with coarse transverse wrinkles, parapsides distinct throughout, median groove reaching the posterior ends of the parallel lines; the lateral grooves appear more like ridges and are short and oblique; shoulders coarsely wrinkled, pleure very coarsely aciculated below and very finely acicu- lated above, with a smooth shining spot midway upon the most prominent part. Scutellum with two small fovew and coarsely rugose. Abdomen: first segment, as well as the peti- ole of metathorax, coarsely wrinkled or fluted, 21 segment ~ occupying nearly the whole surface of the abdomen, ovipositor sheaths long and projecting upward above the line of the ter- gum, venter considerably projecting. Wings long, narrow and slightly smoky, areolet medium. Described from a single specimen from my private col— lection that was reared from a gall of Amphibolips cookii at Lansing, Mich. S. villosus n. sp. The front, above the insertion of the antenne, the vertex, a broad stripe extending over the occiput to the collar, the en- tire thorax, a broad blotch on second abdominal segment ’ ae Descriptions of New Cynipide 203 extending far down at the sides, the tips of the mandibles, and a spot upon the tergum of the 5th abdominal segment, black; feet, including coxz, very light yellow, orbits and antenne slightly rufous, other parts light yellow. Head: face rather finely striate, vertex and occiput with numerous coarse punctures on a microscopically sculp- tured surface, antenne 15-jointed, nearly as long as the body. Thorax: mesonotum with fine transverse ridges, the furrows between bearing coarse but shallow and somewhat confluent punctures, parapsidal grooves very distinct, median groove narrow and extending but a short distance, parallel lines and lateral furrows not very distinct, pleurze coarsely aciculated below, finely above, and with a smooth polished median spot. Scutellum bifoveate, rather coarsely sculptured, fovee shallow, the sculpturing somewhat obscured by pu- . bescence. Abdomen: first joint, as well as petiole of metathorax, fluted, 2d segment occupying nearly the entire surface and deeply notched on posterior margin of the tergum, exposing the tergites of three or four following segments, ovipositor sheaths projecting above the surface of the abdomen, venter rather prominent. Wings hyaline, areolet rather indistinct. Described from two specimens bred from the galls of Acras- pis villosus, taken in Iowa. SUBFAMILY FIGITINA. GENUS COPTEREUCOILA AsHmM. C. marginata n. sp. Female.— Black, 1.2 mm. in length, antenne clavate, apical margin of the wings emarginate. Head black, mandibles ferruginous, face and vertex smooth and shining, occiput finely rugose. Antenne 13-jointed, cla- vate, joints 1, 2,11, 12, and 13 thick, and joints 1,11, 12, and 13 about equal in length ; joint 2 globose and about equal to joint 3 in length ; joints 3-10 slender and joints 4-10 but little longer than broad ; last three joints suddenly and greatly enlarged. Thorax: collar narrow, mesonotum smooth and shining, without grooves. Scutellum deeply bifoveate, polished. The rather 204 Illinois State Laboratory of Natural History narrow but much elevated central area appears as a broadening out of the carina separating the fovee, and has a rather large pit near its posterior margin and two conspicuous punctures immediately in front of it. The broad deeply depressed margin of the scutellum is finely wrinkled or aciculate. Abdomen at base with a dense growth of fine woolly hair, and there is also a small patch of similar hair on either side of the metathorax ; 2d segment occupying nearly the entire surface of the abdomen, abdomen rather long and pointed. Feet and antennz in one specimen are entirely yellow-ferruginous, in two others the feet are dark ferruginous and the antenne are black. Wings hyaline, broadly and rather deeply emarginate on apical margin, ciliate, heavily fringed, and the triangular radial cell open on the costal margin. Described from three specimens from Illinois. Accessions numbers, 1661, 3336, 5437. Male unknown. GENUS KUCOILA West. (Cothonaspis Hartigq). EK. 7-spinosa n. sp. Female.—Black; feet, mandibles, and antenne clear shining rufous ; length, 3 mm. Head: face smooth and polished, with a puncture just be- neath the insertion of each antenna and about: six punctures near the lower inner orbit of each eye, also a few scattered punctures on vertex, just back of the ocelli. Thorax: dorsal margin of collar elevated and emarginate and with a conspic- uous growth of coarse yellow hairs upon either side, mesonotum and pleuree smooth and polished and without grooves or sculp- . tures. Scutellum deeply bifoveate, the elevated central area with a large pit near its posterior margin, and in front of this pit, near the margin on either side, are three coarse setigerous punctures. The broad depressed margin of the scutellum is coarsely rugose. Abdomen with a narrow girdle of rather coarse short hairs, 2d segment occupying nearly the entire sur- face, smooth and highly polished. Wings without pubescence on their surface, posterior border of anterior wings fringed to- wards base, radial area closed, areolet not at all developed, sub- costal vein with seven stout sete or spines. Descriptions of New Cynipide 205 Described from a single female formerly in the private col- lection of Mr. C. A. Hart and bearing accessions number 547. Taken in southern Illinois. Male unknown. GENUS EUCOILIDEA. AsHm., E. rufipes n. sp. Female.— Black; feet, mandibles, and antenne rufous, mesonotum with parapsides converging and uniting in a broad sculptured area; length, 1.8 mm. Head: face between eyes and mouth somewhat aciculate, about six aciculations on each side, front smooth, polished, and convex, vertex and occiput smooth and polished, head with scattering gray hairs. Antenne 13-jointed, joints 3 and 4 equal in length, gradually incrassate towards the tip, hardly shorter than the body and freely set with short gray hairs. Thorax: mesothorax smooth and polished and along the suture > bordering the collar, both dorsally and laterally, is a margin of deep pit-like sculptures ; a row of these sculptures beginning at the outer posterior angle of the mesonotum, runs past the base of the wing aud then along the lateral border of the mes- onotum to the place where the parapsidal furrow usually ter- minates ; from this point the row of sculptures extends over the mesonotum in the usual direction of the parapsidai groove and, after running a little more than one half of the distauce to the scutellum, suddenly broadens out and, with the similar sculpturing of the other side, forms a broad deeply sculptured area reaching to the scutellum. There is a narrow median car- ina, forked, at its posterior extremity, separating this sculptured area of the mesonotum into two equal parts. The sculptured lines divide the smooth surface of the mesothorax into three nearly equal areas. The elevated central portion of the scu- tellum has its large pit or depression centrally located, and there are about six punctures along either lateral border. The edge of this central area extends on all sides in a thin knife-like mar- gin. The depressed border of the scutellum is coarsely rugose and punctate. Abdomen smooth, polished, and without show of hairy girdle at base ; 21 segment occupying the entire surface of the abdomen. Wéings fringed and rather coarsely ciliate, radial area closed. EXPLANATION OF PLATE. Fie. 1. Gall of Antistrophus silphii on Silphium integrifolium, slightly enlarged. Fie. 2. Another gall of same species, with side cut away, show- ing internal cavities; a, larval cells; natural size. Fie. 3. Galls of Antistrophus laciniatus on Silphium lacinia- tum, enlarged three diameters. Fie. 4. Galls of Antistrophus rufus and A. minor in Silphium laciniatum, natural size. Fie. 5. Galls of Dryophanta lanata on Quercus, natural size; a* denuded gall, enlarged five diameters. Articte XII.— Sixth Contribution toa Knowledge of the Life History of certain Little-known Aphidide*. By CLARENCE M. Weep. THE CORN ROOT APHIS. (Aphis maidis (?) Fitch.) The literature and life history of the corn plant louse were discussed at length in 1884 by Professor H. Garmant, who showed that at that time nothing definite was known concern- ing the time or place of development of the sexed forms, the connection between the root and aérial forms, or the manner in which the insect passes the winter. In the article cited the author adds nothing of importance to our knowledge of either of these points, though the conjecture is made ‘ that the lice hibernated as alate viviparous females.” In the autumn of 1885, however, Prof. Garman found a single colony of oviparous females on the roots of corn in an enclosed frame, and has described this form together with eggs obtained from the abdomen by dissection{. Hence at the be- ginning of the season of 1887 there remained to be determined, (1) whether the species normally hibernates in the egg state, (2) when and where the eggs are laid, (3) the time of appear- * The previous contributions of this series have been published as follows: first, “ Psyche,’ Vol. V., pp. 123-134; second, ‘“ Psyche,” Vol. V., pp. 208-210; third, Bulletin Ohio Agricultural Experiment Station, Second Series, Vol. I, pp. 148-152; fourth, Bulletin Ohio Agricultural Experiment Station, Technical Series, Vol. I., pp. 111- 120; fifth, ‘“ Insect Life,’ Vol. III., pp. 285-293. The investigations on which the present article is based.were made in 1887 during my connection with the Illinois State Labora- tory of Natural History, under the direction of Professor Forbes, to whom I am indebted for the opportunity of publishing them at the present time. The article was written in December, 1887, and is now printed in its original form. C. M. W. Hanover, New Hampshire, April, 1891. + 14th Rept. St. Ent. Ill., pp. 23-33. t Mise, Essays on Economic Entomology, 1886, pp. 46-48, 208 Illinois State Laboratory of Natural History. ance of the male, and (4) what connection, if any, exists be- tween the form on the roots and that on the leaves. The ob- servations given below answer the first three of these queries, but I am not at present able to give any definite results con- concerning the obscure subject of the origin and fate of the aérial form. FIELD OBSERVATIONS. The first observations during 1887 were made in an oats field, on the University farm, that was last year planted to corn and abundantly infested with corn root lice. Two hours were spent, April 21, in searching the formicaries of the common brown ant (Lasius alienus) and of a larger red ant which was quite abundant, but neither plant lice nor their eggs were found. ‘The Lasius were burrowing about the young oats plants, which had been up a week. April 25 I repeated the search, and found a mass of about fifty plant-lice eggs slightly below the soil surface in a Lasius nest. They were mostly green and nearly ready to hatch, and some of them put in a dry vial disclosed several young lice the follow- ing day. On April 29 another lot of aphid eggs, together with young lice, were found in another nest of Lasius alienus in the same field. The young lice were on the radicles of the sprouting seeds of smartweed (Polygonum incarnatum) and Setaria, the earth about which had been mined by the ants. On May 4 larval lice were abundant on the plants just mentioned, always at- tended by ants. The majority of them were about half grown, but no adults were seen. By May 16 the stem-mothers had - become adult, given birth to young, and largely disappeared, though a few were still present. The prevailing form then in the field was the young of the second generation, a few of which had become pup (of the winged form), but no winged adults were seen. Ten days later the corn lice had, so far as I could judge after an hour and a half of diligent search, com- pletely disappeared from the field. The second field under observation had been in corn for years and was again planted to corn last spring. I first exam- ined it April 29 (before it had been plowed), when young i Life History of certain Little-known Aphididae. — 209 lice were found abundant under the care of the ants on the young sprouts of Setaria and Polygonum. The following day a part of the field was plowed and larval aphides were found again in the nests of Lasius. On May 6, in a part of the field not yet plowed, half-grown specimens were found in an ant’s nest. By May 21 the lice had been mostly transferred from the Setaria and smartweed to the young corn roots. Some stem-mothers were yet present, and a few wingless adults of the second generation were seen, but the great majority of the lice were the young of this latter form (1. e., those born from the stem-mothers). Two days later a large number of these had become adult, some of them winged but most wingless, and a large number of pup of the winged form were present, as were also a few stem-mothers. At this time the ants were mining about the corn plants all over the field, evidently pre- . paring for the reception of the winged migrants, but as yet very few of these mined hills contained lice. June 1 all stages of the second and third generations were common throughout the field, many of the specimens being winged. On the 27th of the same month, however, only wingless adults and larve were found. No further observations were made in this field until October 10, when both wingless viviparous and oviparous forms were abundant, the most of the lice being young of the oviparous form. A week later the oviparous adults were most abundant, and the viviparous ones were scarce. Many of the oviparous adults were wandering around among the Lasius galleries apparently unmolested by the ants, which behaved very differently toward them from the way they act toward the viviparous forms earlier in the season. I watched repeat- edly to see the ants pick one of the oviparous lice up when the nest was disturbed, but without success. In large ant colonies the oviparous forms had often wandered some distance from the corn roots. In a field, as yet unplowed, that had been in corn the year previous I found (April 30) two separate masses of plant louse eggs in one nest of Lasius alienus. Many of the eggs had evidently already hatched, for there were numbers of young lice on the sprouting Setaria and smartweed. 210 Illinois State Laboratory of Natural History. In an oats field (following corn) on the University farm larval corn lice were found abundant May 4 on the roots of Setaria in an ant’s nest. ; In a field of corn on sod ground I noticed, May 31, that the ants were very busy mining about the young corn plants and evidently preparing for the reception of the winged migrants. In two hills I found single specimens of the winged corn root louse which had not yet begun to establish colonies. I picked one of these up and put it down by another hill where the ants were at work. Almost immediately a Lasius found it, felt of it with the antenne, then grasped the base of the plant louse’s wings with its jaws and carried it below. IT also found May 19 in a field northwest of Champaign (corn following corn) many adult viviparous females with young about them. The same day, on a neighboring farm, a winged corn louse was found on one of the upper roots of a corn plant (corn following sod). The ants had mined a consid- erable opening along the side of the stalk through which the louse must have entered. In the same field at the same time two wingless viviparous females were found at some distance from any corn field. In a field of fodder corn (on corn ground) on the Univer- sity farm wingless adults of the second or possibly third gener- ation were abundant May 25. A single winged specimen was seen. Winged and wingless lice were common on roots of corn in certain fields at Rankin, Vermilion county, July 1. In a field in Urbana wingless root lice were abundant in | hills of corn August 19, and infested hills were easily found. During October and the early part of November I found the oviparous females repeatedly in various fields about Urbana. BREEDING CAGE RESULTS. On April 25 a mass of aphid eggs found in a nest of Lasius alienus in a last year’s corn field were transferred to a breeding cage. The following day several lice had hatched. One of these was isolated on a corn root, and moulted for the Life History of certain Little-known Aphidide. 211 first time May 2 and for the second time May 5. Unfortun- ately it died May 7, but it had become large enough to be rec- ognized as a corn root louse. In the nest where the above eggs were found were two very small plant lice, presumably hatched from the same lot of eggs as those mentioned above. These were placed (April 25) in a glass tube on a corn root, and I succeeded in bring- ing one of them to maturity, but the other died shortly after being transferred. The one that developed proved to be a corn root louse, and from it seven larvee were born between May 9 and 15, at which latter date it died. On April 29 I collected in the field several partially grown corn root lice on roots of Setaria and smartweed and placed them in a vial with earth and a Setaria sprout. May 4 one of the lice had apparently beconie adult, and it was transferred to a corn root inside a glass tube. May 5 it had fastened its beak in the root but no young had appeared; its markings were be- coming more distinct. The following day a young louse was born about noon. The next morning (May 7, at 8 a.m.) no more young had been brought forth, but twenty-four hours later three more had appeared. The larve continued to be born until the 15th, when twelve had been brought forth, at which time the adult died. ¢ Two of the young born from this stem-mother were brought to maturity, and curiously enough one of them was winged and the other apterous. The former, presumably one of those born May 6 or 7, became a pupa May 15 and did not again moult until May 19, when it became a full fledged adult. it was kept in the tube until May 22, but it brought forth no young up to that time, and did not insert its beak in the corn root, being apparently anxious to escape. The wingless specimen was taken out of the tube where it was born, May 8, when it was not over a day old. It passed its last moult May 19, and the first larva was born from it May 21. Another was born the next day, when the observations ceased. June 14 a hill of corn in the field which showed evidence of the presence of Lasius alienus was stocked with corn root lice. The lice were placed about the burrows of the ants and 212 ‘Illinois State Laboratory of Natural History. were almost immediately carried below. A gauze-covered frame was placed over the plants.. July 5 the leaves of the plants were examined for aérial corn lice, but none were found. The frame was replaced and was not again taken off until October 20, when the leaves of the plants were carefully exam? . ined for aphides, but no traces of them were found. On the roots, however, there were numbers of oviparous corn lice with a few wingless viviparous ones and several males —a form which had never before been discovered. There was also a single winged viviparous root louse and a pupa of the same form. All were put in a watch glass over night, and the next morning one of the males was observed in copula with an oviparous female, thus establishing the sex of the former beyond a doubt. The pupa had also moulted and become a winged louse; and several of the oviparous females had laid yellow eggs. The fully developed oviparous forms were mostly of a peculiar yel- lowish pink color, probably due partially at least to the eggs within the abdomen. Many of the young lice in this corn hill were sucking the juices from the roots, which still bad a little sap left in them; but most of the adults were wandering about in the galleries of the ant colony. This experiment proved beyond reasonable doubt that the life cycle of the root form of Aphis maidis can be completed without the appearance of the aérial form. To determine whether there ever is any connection between the two forms will require more work. SUMMARY. Assuming for the present that there is no connection between the root and aérial forms of Aphis maidis, we are justi- fied in the light of these observations in summarizing the life history of the former as follows (starting with the hibernating eggs in the nests of ants): During the first warm days of spring, usually before’ the ground is plowed, there hatch from the eggs small greenish lice that are transferred by the ants to the roots and radicles of Se- taria and Polygonum, where they are carefully tended by the ants. In about a fortnight these young have become adult stem- mothers (“Pseudogyna fundatrix”’) and give birth to quite a Life History of certain Little-known Aphidide. 213 number of young. In the mean while the ground has probably been plowed, and some crop sowed. In case this crop is corn the ants transfer the lice to the corn roots; but if it is oats or wheat they may continue to rear the lice on Setaria and Polyg- onum. The young from these stem-mothers become adult in about a fortnight, and some of them are apterous and others winged. The winged specimens fly to other hills either in the same or neighboring fields, where the ants are waiting to receive them and proceed to establish colonies. Whether in ground not planted to corn more of this second generation become winged than where corn is present, or not, [ cannot say; nor do we know how long the lice can continue to develop on Setaria and Polygonum. This second generation bring forth vivipa- rous young (mostly wingless); and generations of viviparous females continue to develop on corn roots throughout the summer. In autumn the true sexes are produced (both being apterous), and the eggs are deposited by the oviparous females in the wines of the ant colonies. These eggs are cared for by the ants through the winter, and the young lice that hatch from them in spring are provided for as described above. DESCRIPTION. Wingless male.— Body 1.4 mm. long; 7 mm. wide. An- tennz .9 mm. long; cornicles, .08 mm. long; cauda .05 mm. long. Body flattened; sides nearly parallel between middle coxe and cornicles; behind cornicles tapering rapidly to cauda; nar- rowing in front of middlelegs. Greenish black with a glaucous bloom; head above black; dorsum of prothorax with a narrow black transverse band; dorsum of mesothorax with a similar wider band, dorsum of metathorax with a narrow band not ex- tending to the margins,— all indistinct and in some lights not distinguishable. Eyes black; antennae, legs, and cornicles blackish. Caudal. segments of abdomen with indistinct trans- verse dark bands. Ventral surface of thorax blackish, of abdo- men dark green with black patch at caudal extremity. Cauda hirsute. Margins of abdomen wavy. Legs long, hairy. An- tenn robust; joint I swollen; II about equal to I in length, but smaller; IIL longer than [ and II; IV and V subequal, IV slightly longer; VI slightly longer than V, and VII about 214 Illinois State Laboratory of Natural History. equal to VI, short for a filament. Cornicles short, slightly swollen, surface rough. Rostrum robust, reaching middle of posterior coxe. Described from two living specimens taken in nest of Lasius alienus about corn roots, October 21,1887. One seen in copula with oviparous female. Egg. WUength,7 mm; width,3 mm. Yellow when first laid, becoming black during winter and changing to green just before hatching in spring. , Described from many specimens, some of which were ob- tained in breeding cages October 20-22, 1887. Articte XIII.—A Synopsis of the Reptiles and Amphibians of Illinois. By H. Garman. PREFATORY NOTE. This synopsis is presented largely as it was written several years ago. Before a final report on our reptiles and amphibi- ans is prepared, it is sincerely to be desired that examples of every Illinois species may be in the Illinois Laboratory collection for description, and that the local features of the fauna may be brought out by a critical comparison of [llinois specimens with collections from other parts of the United States. Specimens of - the following species, and observations upon them, are especially desirable: Cistudo ornata, Chrysemys picta, Pseudemys hiero- glyphica, P. concinna, Heterodon simus, Ophibolus rhombomacu- latus, Nerodia sipedon var. fasciata, Rana areolata, R. sylvatica, Hyla cinerea, Desmognathus fusca, Spelerpes ruber, Amblystoma jeffersonianum and A. punctatum. A few additional species known to occur in adjacent states may be looked for in Illinois. Chelopus guttatus may occur in northeastern Illinois. It has been found in northern Indiana and in Michigan. Aspidonectes ferox has been found in the Ohio River, and is likely to occur in this stream and in the Mississippi, along our borders. Ayla squirella has been taken at Brookville, Indiana, by Mr. A. W. Butler. It is a southern species, most likely to occur in the south part of the State. Amblystoma copianum was described in 1885 by Prof. O. P. Hay from a single specimen taken at Irvington, Indiana. It seems to bea: a general resemblance to the young A. tiqgrinum just from the water. It may be distinguished from all re- corded Illinois members of the genus by the presence of eleven costal grooves and two plantar tubercles. H. GARMAN. May 6, 1891, 216 Illinois State Laboratory of Natural History. CLASS REPTILIA. Exoskeleton in the form of horny scales or bony plates. . One occipital condyle. Mandible present, each ramus of sey- eral bones. Vertebre without terminal epiphyses. No mam- mary glands. Generally no diaphragm (an incomplete dia- phragm is present in crocodiles). Respiration always by means of lungs, sometimes aided by the walls of the pharynx. Heart generally with three, sometimes with four, chambers. Two aortic arches. Blood not warm; red corpuscles nucleated. Alimentary canal terminating in acloaca. Oviparous or ovo- viparous. Body enclosed in a bony shell, wide, and more or less de- pressed. Legs four. Turtles...........Order CHELONA. Body more or less cylindrical, never greatly depressed, covered with small scales, generally imbricated. Hyelids and ex- ternal ears present. Legs commonly four; if wanting, with rudimentary sternal arch. Lizards......... Order Saurta. Body very long and slender, cylindrical, back covered with small imbricated scales, belly commonly with larger scales. No legs, or at most with rudiments of the hind pair. Sternal arch, eyelids, and external ears wanting. Snakes. Order OpHipra. ORDER CHELONIA. Body enclosed between two shields (carapace, upper, and plastron, lower) consisting of bony plates. Dorsal vertebree and ribs immovably united with the carapace. Bones of head firmly united. Jaws covered with bony plates. No teeth. No external auditory organs. Hyes with a nictitating mem- brane. Four well-developed limbs. Oviparous. This well-defined group is represented in Illinois by a rather small number of species. Our streams and lakes, more especially the [llinois and Mississippi Rivers, with their exten- sive sloughs, their numerous sandy shores suited to the process of oviposition, and their abundance of animal and vegetable life, would seem to form an ideal chelonian habitat, About Reptiles and Amphibians of Illinois. 217 seven species are very abundant in these streams within our limits; beyond this number the more exclusively aquatic species are rather scarce, or else only locally abundant. The turtles are timid, inoffensive animals, avoiding man whenever possible, and only when cornered exhibiting the strength and quickness which might render them formidable antagonists if they were so disposed. The snapping turtles with their strength and vigor are quite able to hold their own against most enemies. Our species vary in length from about four inches to as many feet, and from one to a hundred pounds in weight. Their food consists ordinarily of fishes, frogs, mollusks, crayfishes, aquatic insects, and vegetation, some being exclusively carnivorous, others taking both animal and vegetable food. None of our species depend entirely upon vegetable food. Several species trouble fishermen at times by devouring fishes which have been caught on trot lines or in set nets. Excepting the Trionychide, they are not rapid swimmers, and the predaceous species probably get most of their prey by lying in wait for it. An animal once within reach of their jaws must be very quick to escape capture. I have occasionally seen an individual making off with a partly devoured water snake. They emit no sounds except by snap- ping the jaws when angered, and a low hiss produced by the sudden compression of the lungs and consequent rush of air through the glottis, when the head and limbs are withdrawn into the shell. The eggs are white, spherical or elongate oval (in the latter case the two ends alike in diameter ), and are provided with a rather tough shell. As far as known our species all bury their eggs in sand or earth and leave them to hatch by the sun’s heat. SYNOPSIS OF THE FAMILIES REPRESENTED IN ILLINOIS. Plastron with twelve plates, with no, or but one, transverse hinge. Bridge between plastron and carapace, when pres- ent, formed by wings of the pectoral and abdominal plates. PUNO WBE DAIE viet ='c cua eek kendo ok oe'd ove Des EMYDIDZ. 218 Illinois State Laboratory of Natural History. Plastron with eleven plates, with two transverse hinges. Bridge formed by wings of the abdominal and the contig- uous axillary and inguinal. Gular barbels present. CINOSTERNID®. . Plastron small, cruciform, with ten, nine, eight, or fewer, plates. Bridge narrow. Head very large, with gular barbels. CHELYDRID&. Entire shell covered with a continuous skin, cartilaginous at the margins. Head slender; nostrils borne at the end of a fleshy proboscis; horny coverings of jaws concealed at the'sides by fleshy lips... ee ie TRIONYCHID &. FAMILY EMYDIDA. Shell bony, moderately depressed or strongly convex, cov- ered with horny plates, of which there are five dorsal, eight costal, one nuchal, twenty-two marginal, two caudals, twelve sternals, and generally two axillaries and two inguinals. Head of moderate size, covered with a smooth, soft skin, re- tractile within the cavity of the shell. Jaws naked. Digits 5-4, generally fully webbed, rarely imperfectly webbed. The family includes the greater part of our species. The majority are aquatic, and, though not by their structure un- fitted for life on land, are rarely found far away from the water. A few are terrestrial, and in such species the webs of the feet are greatly reduced in size. SYNOPSIS OF THE GENERA REPRESENTED IN ILLINOIS. 1 (2). Plastron immovably united with the carapace; with no tranpverse hinge coer WAR oY cs n eae. 2 enna 5. 2(1). Articulation between the plastron and carapace carti- laginous; with a transverse hinge between the pectoral and abdominal plates’ )22 thoes Ste tae ee ae 3. 3 (4). Carapace hemispherical. Plastron rounded before and behind. Digits with rudimentary webs.......C1stupo. 4 (3). Carapace elongate, convex. Plastron emarginate be- hind. Digits with evident webs .............. Emys. 5 (6). Alveolar surfaces of the jaws with no median carina. . .9. 6 (5). Alveolar surfaces with a median carina parallel with the MarSiNG 35 ae oss MUD Sere EE Seiressci- Aue ee Reptiles and Amphibians of Illinois. 219 7 (8). Plastron truncate before and behind. Alveolar sur- faces of jaws moderately narrow. Digits short. CHRYSEMYS. 8 (7). Plastron distinctly emarginate behind. Alveolar sur- faces of jaws wider. Digits longer than in Chrysemys. PsEUDEMYS. 9 (5). Plastron deeply emarginate behind, slightly before. Digits long and fully webbed ....... MALACOCLEMMYS. CISTUDO, FLEMING. Fleming, Philosophy of Zodélogy, 1822, p. 270. Hoffmann, Bronn’s Thier Reich, Reptilien, p. 378. Carapace strongly convex or hemispherical. Plastron large, rounded before and behind, capable of completely clos- ing the carapace, and affixed to the latter by a ligamentous. articulation; a transverse movable hinge between the pectoral and abdominal plates, these plates with no wings in adults. Axillary and inguinal plates small or wanting. Digits 5-4 or 5-8, only the terminal phalanges free, with small interdigital webs. Cistudo carolina, Linn. Box Turtxe. Var. carolina. Testudo carolina, Linn., Syst. Nat., ed. 10, 1758, L., p. 198.— LeC., Ann. Lye. Nat. Hist. N. Y., 1829, LI1., p. 97. Cistudo carolina, Dum. et Bibr., Erp. Gén., I1., 1835, p. 210,— Holbr., N. A. Herp., 1842, I., p. 31. pl. 2 De Kay, Nat. Hist. N. Y., L, Zoél. III., Rept. and Amph., 1842, p. 24, pl. 1, fig. 1.—Gray, Cat. Tortoises, ete., in Coll. Brit. Mus., 1844, p. 30. Cistudo clausa, subsp. clausa, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 57. Cistudo clausa, Davis and Rice, bull. Chicago Acad. Sci., 1883. Var. triunguis. Cistudo triunguis, Ag., L., Contr. Nat. Hist. U. S., 1857, I., p. 445, Cistudo clausa, subsp. triunguis, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1888, p. 57. Length of shell about six inches; carapace strongly con- vex, highest before the middle. Nuchal plate very small, slightly projecting; anterior and posterior marginals slightly flared outwards. Caudals directed downwards. Two gular 220 Illinois State Laboratory of Natural History. plates of plastron elongate, and narrowed posteriorly. Pecto- rals transversely elongate, quadrangular, with no lateral pro- jecting portion. Abdominals produced backwards laterally. No inguinal plate. Preanals and anals large, the latter trune- ate behind. Head convex above. Anterior legs widest, with numerous oval scales. Claws well developed. Digits 5-4, or 5-3. Colors extremely variable; generally dark brown above, with numerous yellow markings of irregular form and disposi- tion. Prevailing color sometimes golden yellow. Often with the yellow in the form of short stripes and spots, with a more or less continuous vertebral stripe. Head and fore legs often with round spots of orange. Iris varying from hazel to light magenta. Plastron yellow, with a few dark blotches, or with the yellow and black or brown in about equal proportions and in the form of stripes; sometimes mostly ebony black. Young are yellowish brown, and have a vertebral ridge on the cara- pace. Length of shell, 4.87; depth, 1.75; width, 3.50. Throughout the State, rare northward, not uncommon in dry woods of the south part of the State. Du Quoin, Eldorado, Cobden, Anna, Fairfield, and Mt. Carmel (Nat. Mus. ). The box turtle is the most strictly terrestrial of all our turtles, frequenting the dryest hills and woods during the hottest summer months. It is said to avoid the water and to conceal itself at the approach of a storm. This is not in accord with my limited experience with the species, for but a few seasons ago I took four examples, two males and two females, from a small shallow pool, and have seen a few speci- mens wandering about during rain storms. It lives to a great age according to Mr. J. A. Allen. A marked specimen was known to him to have lived sixty years at least. The food _ consists of both animal and vegetable substances; insects, fruits, and mushrooms are known to be eaten by it. Both of the varieties occur in Illinois. Cistudo ornata, Ag. Cistudo ornata, Ag., L., Contr. Nat. Hist. U.8., 1857, I., p. 445. This species has been described as broad and flat, with no vertebral keel even in the young. It is said to be common in = Ua nop BE 8 Reptiles and Amphibians of Illinois. 221 some of the states between the Mississippi River and the Rocky Mountains. A few specimens have been taken in Illinois, one of which is in the museum of the Northwestern University, at Evanston. Fairfield, Wayne Co. (Nat. Mus.). EMYS, BRoNGNIART. Brongniart, Mém. des savants étrangers, 1805. Carapace moderately convex. Plastron large, separated into two parts by a transverse, movable articulation between the pectoral and abdominal plates; articulation with the cara- pace cartilaginous. Wings of pectoral and abdominal plates smal] or wanting in adults. Axillary and inguinal plates pres- ent or the latter wanting. Digits 5-4, with interdigital webs. The single American species belonging to this genus dif- fers from the other members of the genus as described by European authors in lacking the inguinal plate. Our species agrees in some of its generic features with members of the genus Cistudo, but it may be known from any species of that genus by its elongate shell, notched upper jaw, and emarginate posterior end of the plastron. Emys meleagris, Shaw. Branprne’s TorTo!se. Testudo meleagris, Shaw and Nodder, Viv. Nat., 1798, pl. 144. Cistudo blandingti, Holbrook, N. A. Herp., 1842, I., p. 39, pl. 3— Storer, Bost. Jour. Nat. Hist., 1840, III, p. 14——De Kay, Nat. Hist. N. Y., I., Zo6l. II1., Rept. and Amph., 1842, p. 25, pl. 1, fig. 2—Kennicott, Trans. Ill. State Agr. Soc., 1853-54, Pep ool: Emys meleagris, Agassiz, L., Contr. Nat. Hist. U. S., 1857, L., p. 442; IT., pl. 4, fig. 20-22.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I, No. 5, 1883, p. 57; Bull. Chicago Acad. Sci., 1883. Length of carapace about seven inches, highest at about the middle, with a slight notch behind, margins flared anteri- orly and at the sides posteriorly. Nuchal plate small, elongate in adults, wider in young examples. Caudal plates directed obliquely downward and backward. Plastron large, elongate sub-elliptical, its posterior margin broadly cut out. Gular 222 Illinois State Laboratory of Natural History. plates large, triangular. Pectorals and abdominals large, about equal in size, the former not narrowed, quadrangular. A very small axillary. No inguinal. Head of moderate size, convex above, nostrils anterior and near together. Anterior legs with transverse scutes on the anterior surface, digits five. Posterior legs larger than anterior, with small oval scales, digits four, with a large projecting scale in the place of a fifth digit. Claws strong and curved. Color above black or eae with numerous small round or oval spots of yellow. Color beneath brownish yellow, with large black blotches on the outside of the plates. Head black or brown above, with numerous small round yellow spots, be- neath yellow. Legs dark above, pale beneath. Young with a vertebral ridge on the carapace and with a roughened area on the plates surrounded by concentric lines; plates beneath smooth, but with the concentric lines. Spots often obscure. Length of carapace, 7; width, 4.75; depth, 2.75. Throughout the State, commoner north; formerly abun- dant on the prairies, but rare at present. Normal, Urbana. This species is closely related to the box turtle in both structure and habits. It is oftener found in water than the latter, but is essentially a terrestrial species. Its home is on the prairies where it formerly occurred in numbers, but in the better agricultural regions it has been exterminated. CHRYSEMYS, GRAY. Gray, Cat. Tortoises, ete., in Coll. Brit. Mus., 1844, p. 27. Carapace depressed. Plastron large, truncate before and behind, immovably fixed to the carapace, with no transverse hinge. Wings of pectoral and abdominal plates well devel- oped. Axillary and inguinal plates present and of about equal size. Digits 5-4, several terminal phalanges free, fully webbed, short. Alveolar surfaces of jaws moderately narrow, with a median carina parallel with the margins. This genus and Pseudemys are scarcely distinct. The slight differences in the width of the horny covering of the jaws and in the length of the digits are not of sufficient im- portance to separate them. To these may be added a differ- a Reptiles and Amphibians of Illinois. 223 ence in the margins of the carapace and in the form and width of the plastron, but the latter are characters which vary in the same species with age. Plastron black centrally, with rays of this color extending out along sutures, front edge deeply denticulate...... C. belli. Plastron reddish orange or yellow. Dorsal and costal plates 5 1 AED a TL ge eek, CoP ae hoa ar eee raters C. marginata. Plastron reddish orange or yellow. Dorsal and costal plates in iranmsverse rows Of threes... 6. ee ek ee es C. picta. Chrysemys belli, Gray. Emys belli, Gray, Synopsis Reptilium, 1831, p. 12—Dum. et Bibr., Erp. Gén., 1835, L1., p. 502. Chrysemys bellii, Agassiz, L., Contr. Nat. Hist. U.S., 1857, L., p. 439.—True, Yarrow’s Check List N. A. Rept. and Batr., 1882.—Garman, S., List N. A. Rept. and Batr., 1884. Shell depressed; no keel; uniformly convex above; mar- gins nearly continuous; a very slight notch behind; nuchal plate elongated, narrowed forwards, notched in front. Plas- tron truncate behind, with no decided angles; outer angles of gulars protuberant. Head below medium in size; jaws weak; tympanum evident. Feet medium, fingers and toes fully webbed; nails strong and sharp. Length of carapace, 4.25; width, 3.38; depth of shell, about 1.50. Dull black above, with a greenish cast, with obscure yel- lowish lines following sutures below the dorsal and costai plates. Marginals above with about three transverse lines, the median of which reaches the inner margin of the plate, and sometimes joins a yellow band along the outer margin; mar- ginals beneath with a broad median band which may, within, join the stripes of adjacent plates. Piastron red, with the central region occupied by a large blackish lyriform blotch which is marbled with pale yellow and sends rays out along the sutures. Sometimes also with a pair of isolated blackish spots, one near the outer edge of each pectoral plate. Head and Jegs striped with red as in C. marginata. Noticeable lines on the head are as follows: a slender median stripe extending from the snout to a point nearly opposite the anterior edge of the tympa- 224 Illinois State Laboratory of Natural History. num; astripe extending backward from the upper border of the eye and expanding on the posterior part of the head, finally extending along the dorsal side of the neck; a short stripe extending from the posterior edge of the eye to the dorsal edge ~ of the tympanum; a broad stripe on the neck, which bifurcates in front, sending its dorsal branch across the angle of the mouth to the posterior edge of the eye and its ventral branch across the jaws to terminate beneath the nostril; and a stripe on — the symphysis of the mandible, which bifurcates and sends diverging branches along ventral side of neck. Fore feet with two conspicuous stripes in front, and with narrower marginal stripes; webs largely pale yellow. Tail with two stripes above, which converge and finally join in a single median stripe; and two similar stripes beneath converge from each side of the vent and also join in a single median stripe. Described largely from a single young example taken on Long Island in the Mississippi River at Quincy. The charac- teristic marking of the plastron becomes obscure with age. The following is Gray’s very unsatisfactory description: ‘‘Shell oblong, solid, rather depressed in the center, con- vex on the sides, olive waved with irregular black-edged pale- dotted greenish lines placed on the edge and across the middle of each shield; vertebrals nearly square, first urceolate, the rest 6-sided; beneath black, yellow-dotted; sternum flat, sur- rounded with an irregular yellow edge, front edge deeply den- ticulate.” (Cat. Tortoise, etc., in Coll. Brit. Mus.) The species is very common in bottom-land lakes and ponds at Quincy, but has not been taken elsewhere in the State. It is closely related to C. marginata, with which it agrees in the arrangement of the dorsal and costal plates. The elder Agassiz states that the ground color is copper-red or bronze. He records it as occurring in the Osage River, Missouri, and at St. Louis. Chrysemys marginata, Agassiz. WESTERN PAINTED TURTLE. Chrysemys marginata, Agassiz, L., Contr. Nat. Hist. U. S., 1857, I., p. 439; II, pl. 1, fig. 6. —Smith, Geol. Surv. Ohio, Zodél. and Bot., IV., p. 664.—True, Yarrow’s Check List N. A. Rept. and Batr., 1882. ei aS Ae eee eee Reptiles and Amphibians of Illinois. 225 Chrysemys picta [in part], Davis and Rice, bull. Ill. State Lab. Nat. Hist.,I., No. 5, 1883, p. 56. Chrysemys picta, Garman, S., List N. A. Rept. and Batr., 1884. Carapace about six inches long, depressed, convex, highest at about the middle, posterior lateral margins slightly flared. Nuchal plate long, narrow, notched in front. Three median dorsals about equal in size, hexagonal. Dorsals and costals alternating, never in transverse series of three. A slight notch in the margin, between the caudals. Plastron rounded before, truncate or cut out, leaving a very wide angle between the margins of the anals, the latter sometimes denticulate. Ante- rior lateral angles of the gulars with a blunt tooth, the mar- gins more or less denticulate. Pectorals transverse, about half the size of the abdominals. Axillary and inguinal well devel- oped. Head flattened; eyes prominent, nostrils anterior and near together. Upper jaw with a sharp tooth on each side of a median notch; lower jaw with a median tooth. Anterior feet with transverse imbricated scales; digits five, claws long and curved. Posterior legs larger, expanded distally, with four digits, claws shorter than those of the anterior digits; a corne- -ous marginal projection in place of fifth toe. Color above greenish olive, or brown, with a narrow black- edged vertebral line; margins of plates yellow, edged with black, Marginal plates with lines and spots of yellow or red above, with a wide transverse band, or a triangular marginal spot of red and a few lines and spots of the same below. Plastron orange or yellow, with a large black or dusky oblong central area, this often marbled with pale, sometimes obsolete. Head brown above, with narrow red or yellow lines and dots, with numerous alternating black and red or yellow lines below. Iris yellowish brown, black before and behind pupil. The most conspicuous stripes of head and neck as follows: a stripe extending from the upper posterior part of the head down- wards and backwards upon the neck; a short wide dash be- hind the eye; astripe extending from the posterior inferior margin of the eye beneath the tympanum and backwards on the lower part of the neck; a short wide line near the corner of the mouth on the lower jaw; and a median narrow stripe extending from the tooth of the lower jaw backwards a short 226 Illinois State Laboratory of Natural History. distance and then bifurcating, its branches continuing back- wards on the under side of the neck. Legs and tail striped with red or yellow. Length of carapace, 5.50; width, 3.81; depth of shell, 1.50. | Throughout the State; common. Cedar Lake, Lake Co.; Nippersink Lake; Oregon; Normal; Peoria (Brendel); Little Fox River at Phillipstown; Mt. Carmel ( Nat. Mus.). This is one of the commonest turtles of ponds and small lakes, where scores of them may be seen on bright days in sum- mer sunning themselves on partially submerged logs. It is especially abundant in the small lakes of the northern part of the State. Young of this species with a carapace about an inch and a quarter long are very different from the adults. The most noticeable difference is in the form of the head and carapace. The head is more convex above, with shorter snout and proportionately more prominent eyes. The carapace is flatter, less elongate, in some almost circular in outline. The nuchal plate is almost square and is without the anterior notch. With age there is a gradual change in these particulars, the head becoming flatter, the snout more prominent, the cara- pace elongate, and the nuchal plate narrower. Some large specimens have the anterior edge of the first marginal plates sharply toothed, the teeth being large next the nuchal plate and growing smaller outwardly. Chrysemys picta, Herrm. Painrep TuRTLE. Testudo picta, Herrmann, Schneider’s Schildkr., 1783, p. 348. Emys picta, Say, Jour. Acad. Nat. Sci. Phila., 1825, LV., p. 211. Testudo picta, LeC., Ann. Lyc. Nat. Hist. N. Y., 1829, IIT., p. 115. Emys picta, Dum. et Bibr., Erp. Gén., 1835, I1., p. 297 Holbrook, N. A. Herp., 1842, I., p. 75, pl. 10.—De Kay, Nat. Hist. N.Y., L, Zo6l. IIL., Rept. and Amph., 1842, p. 12, pl.5, fig. 10. . Chrysemys picta, Agassiz, L,, Contr. Nat. Hist. U.S., 1857, 1., p 438; I1., pl. 1., fig. 1-5.—Smith, Geol. Surv. Ohio, Zoi. and Bot., LV., 1882, p. 663. Chrysemys picta [in part], Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No.5, 1883, p. 56. Carapace about six inches long, depressed, convex, smooth. Nuchal plate about two thirds as wide as long, notched. Dorsals Reptiles and Amphibians of Illinois. 227 and costals arranged in transverse series of threes, never alter- nating as in C. marginata. Anterior lateral angles of the culars, with a blunt tooth. Margins of the first marginals, the gulars, and the anals sometimes serrate. Pectorals transverse, very narrow, scarcely half the size of the abdominals. Upper jaw notched, with a sharp tooth on each side of the excision. Anterior feet smallest, with five digits. Posterior feet ex- panded distally, with four digits. Color above olive-brown, or dull black, with a narrow ver- tebral line; median plates with yellow margins. Marginal plates with parallel or concentric yellow lines; all the yellow lines edged with black. Under side of marginal plates with large marginal spots, or almost entirely, red or yellow. Plastron yellow or orange, with an obsolete central dark area, the latter sometimes made up of approximated gray and yellow stripes. Neck, feet, and tail striped with red and yellow. Size and proportions nearly the same as in C. marginata. Mt. Carmel (Nat. Mus. ). Under the name C. picta this and the closely allied C. marginata are included by good authorities as varieties of one species, and as the former name has the right of priority it has come to be commonly applied by students to the individuals of the genus taken in Illinois. It is very probable, however, that C. picta will be found to be very rare in this State, if it occurs at all. C. marginata is at any rate the common species. Pre- vious to the publication of Kennicott’s list of the animals of Cook county the two species were not discriminated by natu- ralists, and his statement as to the abundance of C. picta in the State doubtless applies to the other species. The two species may always be known by the difference in the relative positions of the dorsal and eostal plates. Otherwise the differ- ences between them are not marked. In habits they are alike, both frequenting lakes and ponds. They are occasionally found in small streams, but their preference seems to be for quiet water in which there are partly submerged rocks or logs upon which they may climb to bask in the sun. They are harmless and timid, slipping hurriedly into the water when approached. They are said to eat both animal and vegetable food. The eggs are elongate aud are deposited by the mother 228 Illinois State Laboratory of Natural History. in a small hole dug in the sand, and are then covered up and left to hatch in the heat of the sun. PSEUDEMYS, GRAY. Gray, Cat. Shield Rept., 1855, p. 33. Carapace moderately depressed. Plastron rather large, im- movably fixed to the carapace, with no transverse hinge, emar- ginate before and behind. Wings of pectoral and abdominal plates well developed. Axillary and inguinal plates rather large and about equal in size. Alveolar surfaces of jaws rather wide and with a median ridge parallel to their margins. Digits 5-4, moderately long, fully webbed. Ridges on alveolar surfaces of jaws smooth. Both jaws with smooth edges. With a broad orange stripe on each side of head. Carapace With? Vellow ‘StEIPeS << 'ssiewisrces 6's 7s 4 tmigie eta P. elegans. Without orange stripe on head. Markings of head and neck obscure. Carapace without yellow stripes. .P. troosti. Ridges on alveolar surfaces of jaws tuberculate. Both jaws with smooth edges. Shell greatly de- TOVESSOU seer nscatteee erate yates areectt CRRKe hee P. hieroglyphica. Lower jaw with serrated edge. Not greatly de- DLESBEO sone suet ciereteeoale save ela eetuiers cares . P. concinna. Pseudemys elegans, Max. Emys elegans, Max., Reise Nord-Amer., I., 1889, pp. 176, 213. Trachemys elegans, Agassiz, L., Contr. Nat. Hist. U.S., 1857, L, p. 435. Pseudemys elegans, Jordan, Man. Vert. N. U. 8., 3d ed., 1880, p. 165.--Davis and Rice, Bull. Il. State Lab. Nat. Hist., I, No. 5, 1883, p. 56; Bull. Chicago Acad. Sci., 1883. = Carapace moderately depressed, convex, with very slight indications of a keel in small examples only, emarginate be- tween the posterior marginal plates, making the edge obtusely serrate. Plastron emarginate before and behind. Anterior lateral angles of the gulars slightly produced. Head of medi- um size; upper jaw with a median emargination, lower jaw with a corresponding median tooth. Digits 5-4, _ Reptiles and Amphibians of Illinois. 229 - Color above light olive-gray, varying sometimes to brown- ish red, with yellow stripes and obscure black lines. Beneath yellow, with a large central spot of black, and sometimes a blotch of blood-red on each plate. Head striped with orange and yellow, finely above, more coarsely on the sides and be- neath. Iris greenish yellow, black before and behind the pu- pil. A wide orange-red stripe extends from the posterior mar- gin of the eye backwards upon the neck, where it becomes narrower. A yellow stripe extends from the lower margin of the eye downward and backward between the angle of the mouth and the tympanum and thence along the neck. On the middle line, extending from the tooth of the mandible, is a stripe which soon bifurcates and sends backward on the infe- rior surface of the neck two large divergent stripes. A stripe about midway between the tooth of the lower jaw and the angle of the mouth unites with one starting at the lower bor-: der of the eye, or may terminate short of it. The legs and tail are striped with yellow. Carapace of small examples about 4 inches long is 3.12 inches wide and 1.62 inch deep. Adults reach a length of 8 inches or more. Occurs in the larger streams of the southern two thirds of the State. Moderately common. Quincy, Henry, Peoria, Pekin, Havana, Mt. Carmel. A handsome species, approaching the painted turtles in the beauty of its colors. When the epidermal scales are re- moved from the shell the pattern is very different; on the car- apace the brown is entirely removed and the sub-epidermal plates are concentrically lied with black and yellow. The plates of the plastron when desquamated show a central black- ish spot with a pale center, and are yellow elsewhere. Pseudemys troosti, Holbr. Emys troostii, Holbr., N. A. Herp., 1842, [., p. 123, pl. 20, Trachemys troostii, Agassiz, L., Contr. Nat. Hist. U.S., 1857, L., p. 435, Pseudemys troostii, Jordan, Man. Vert. N. U.S., 3d ed., 1880, p. 165.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., L,, No, 5, 1883, p. 55; Bull, Chicago Acad, Sci., 1883, 230 Illinois State Laboratory of Natural History. Shell moderately convex above, the slope uniform in front, somewhat explanate above the insertion of the posterior legs, a trifle depressed centrally. Third, fourth, and fifth dorsal plates with an obscure rounded median ridge. Costal plates and the first and fifth dorsals strongly longitudinally rugose; the three central dorsals only faintly so. Nuchal plate slender, tapering forward; the two adjacent marginals with outer angles pro- jecting. Posterior five marginal plates of each side without outer angles, each with a marginal notch. Plastron a little rounded in front, nearly truncate; outer angles of the gulars bluntly tuberculate, the anterior edges roughened. Plastron broadly excised behind; anal plates with no angles. Head of medium size; jaws rather strong, the upper with a very slight median notch. Tympanum evident. Feet strong, the posterior pair greatly expanded and strongly webbed. Length of carapace, 9.25; width of same, 6.75; depth of shell, 3.50. Carapace greenish olive and black above, the former slightly predominating, the black confined chiefly to the mar- gins excepting on the two median costals, where it forms a transverse median band, the olive forming on most of the dor- sal and marginal plates large quadrate central spots; marginals beneath more extensively black, and with the greenish olive replaced with pale yellow. Plastron pale yellow and black, the latter extending along the sutures on the anterior two thirds of the plastron, but occupying most of the plates of the posterior lobe, leaving only central spots and part of the margins yellow. Head dusky, obscurely and finely mottled and spotted above with olive-brown, beneath narrowly and obscurely striped with greenish. Jaws horn-color with dots and dashes of black. Feet and tail dusky, with indefinite markings. Described from a single example taken on Long Island, in the Mississippi River at Quincy. The proportions of the black and yellow of the plastron are subject to considerable variation, sometimes one, sometimes the other predominating. This is one of our rarest species. The only examples in the State Laboratory collection were collected at Quincy. Mr. R. Ridgway of the United States National Museum has ob- Reptiles and Amphibians of Mlinois. 231 served the species at Mt. Carmel, and it has been taken also at Wheatland, some miles above Mt. Carmel. Pseudemys hieroglyphica, Holbr. Emys hieroglyphica, Holbr., N. A. Herp., 1842, L, p. 111, pl. 17+ Ptychemys hieroglyphica, Agassiz, L., Contr. Nat. Hist. U.S., 1857, I., p. 434. Pseudemys hieroglyphica, Jordan, Man. Vert. N. U.S., 3d ed., 1880, p. 165.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 55; Bull. Chicago Acad. Sci., 1883. Shell oval, depressed, keelless, smooth, entire in front, elongated and imperfectly serrated behind; sternum oblong, nicked behind, dingy yellow, sides olive varied; head very small, upper jaw slightly emarginate, lower jaw with a tooth; first vertebral urceolate; each costal shield with four or five, and each marginal with dark spots with concentric yellow lines.—Gray. Length about twelve inches. The species has been observed only in the Wabash River. It resembles in some respects P. concinna, but is more depressed, and the mandible is not serrated. Pseudemys concinna, LeC. Frorra Cooter. Testudo concinna, LeC., Ann. Lye. Nat. Hist. N. Y., 1829, III., p 106. Emys concinna, Dum. et Bibr., Erp. Gén., 1835,IT., p.289.—H olbr., N. A. Herp., 1842, I., 119, pl. 19.—Gray, Cat. Tortoises, etc., in Coll. Brit. Mus., 1844, p. 25. Ptychemys concinna, Agassiz, L., Contr. Nat. Hist. U.S., 1857, ]., p. 482; II., pl. 1, fig. 18; pl. 2, fig. 4-6. Pseudemys concinna, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 55. Large. Moderately depressed. Carapace oval in outline as seen from above, very slightly wider posteriorly and main- taining its width well towards the front; slope at the sides uniform; margins slightly flared anteriorly and posteriorly at the sides; without vertebral carina. Anterior margin with a wide, rounded, median emargination. Posterior margin with several slight teeth, consisting of the produced posterior parts of marginal plates. An acute median notch behind. Costal 2 232 Illinois State Laboratory of Natural History. plates with slight longitudinal ruge. First and last dorsal plates with obsolete ruge. The remaining dorsal plates and the marginals smooth. Nuchal plate nearly twice as long as wide, its anterior edge straight. First dorsal plate vase-shaped - in outline. The second and third dorsal plates are equal in size, are elongate, quadrangular, and about equally wide at both ends. The fourth dorsal plate is about equal in size to the two preceding plates and is elongate, but is hexagonal and narrowed behind. The fifth is the widest plate of the series, being about a third wider than long, and is sub-heptagonal. First costal: plate triangular in general form, with its outer margin rounded. The remaining costal plates are quadran- gular, and decrease in relative size from before backwards. Anterior lateral angles of gular plates bluntly rounded. Pos- terior lobe of plastron with a median notch behind; on each > side of the notch slightly sinuate. Inguinal plate produced forwards so as to exclude the greater part of the abdominal from the marginal plates. Head of medium size. Superior jaw with a perfectly smooth edge and a very slight median notch. Edge of lower jaw distinctly serrated and with a prom- inent median tooth; its outer surface roughened. Alveolar surfaces of jaws wide, with strongly toothed ridges. Feet completely webbed, with rather strong, slightly curved claws. Blackish above, obsoletely reticulate with yellow lines, the areas between these lines being occupied in most cases by nar- row, concentric lines of the same color. The lines on the dorsal plates are mostly longitudinal; those on the sides are mostly transverse. On the marginal plates are sets of concen- tric yellow lines, each set with two more or less evident central dots, one on each side of the line of union of two mar- ginal plates. Wider orange-red lines lie one across the middle of each marginal plate; they expand at the margin of the shell and bifurcate near the inner edges of the marginal plates, their branches uniting with each other or with the netted lines of the upper part of the surface. Plastron pale straw-yellow, without blotches; wings of the pectoral and abdominal plates each with two parallel dusky lines. Inguinal plate with a dusky ring. Marginal plates beneath orange-red, with large round dusky spots at the union of two plates, including in Reptiles and Amphibians of Illinois. 233 some cases concentrically disposed lines of red corresponding to the yellow lines on the superior surfaces of these plates. Head and neck striped with yellow and orange. A narrow yellow line extends along the middle of the head from the snout to a point just behind the orbit, where it abruptly expands and terminates. Lines on each side extend from the orbit backward upon the sides of the neck, where they become wider and more brightly colored. Of these lines two are more conspicuous than the others; one of them extends from the upper edge of the orbit, where it is very narrow, back- ward and downward, expanding on the posterior part of the head and becoming again somewhat narrower upon the neck; the other extends from the middle of the posterior edge of the orbit backward through the upper part of the tympa- num. From the inferior edge of the orbit a stripe extends downward and backward across the angle of the jaws and soon joins another stripe which arises on the middle of the lower jaw; from their point of union a conspicuous stripe con- tinues backward upon the lower part of the neck. A wide stripe extends from the symphysis of the lower jaw backward along the middle line for a short distance, and from it diverge, upon the inferior surface of the neck, two rather wide stripes. A narrow yellow stripe arises at each side of the median tooth of the lower jaw. A line of about the same width extends from the nostril directly downward, for a short distance, and thence obliquely backward to the middle of the side of the upper jaw. Legs and tail striped with orange. Skin anteriorly mottled with black and yellowish lines. Skin of the inguinal region white and immaculate. Length of shell, 12.75; depth, 4.75; width, 8.75. Apparently not common in the State. Taken only at Mt. Carmel. This is a southern species. A fine large example, from which the above description is drawn, was sent me some years ago by Dr. J. Schneck, to whom the credit of the discovery of the species within our limits belongs. The extralimital distribu- tion of the species includes all the South Atlantic and Gulf States from North Carolina to Texas. It occurs also, according to Prof. Louis Agassiz, in Arkansas and Missouri. The Illinois 234 Illinois State Laboratory of Natural History. specimen, though a finely developed one, is abnormal in the possession of a pair of small symmetrical supernumerary mar- ginals, one on each side of the nuchal plate, making thirteen for each side and twenty-six in all. MALACOCLEMMYS, GRAY. Gray, Cat. Tortoises, etc., in Coll. Brit. Mus., 1844, p. 28. Carapace depressed, keeled.’ Plastron moderately large, immovably fixed to the carapace, with no transverse hinge, emarginate before and behind. Wings of pectoral and abdominal plates large. Axillary and inguinal plates present. Alveolar surfaces of the jaws smooth. Digits 5-4, long, fully webbed. A comma-shaped yellow mark behind each eye. Keels of second and third dorsal plates concave before the tuber- BIOS une coh saa een aa Nettle A otis ye MARE Mme eae M. lesueuri. Spot behind eye not comma-shaped. Keels of second and third dorsal plates uniformly convex before the tubercles. M. geographicus. Malacoclemmys lesueuri, Gray. GrograpHic TorrTorsE, Map TURTLE. Emys lesueurti, Gray, Syn. Rep., 18381, p. 12. Emys geographica |in part], Dum. et Bibr. Erp. Gén., 1835, IL., p. 256. Emys pseudo-geographica Holbrook, N. A. Herp., 1842, I., p. 108, pl. 15.— DeKay, Nat. Hist. N. Y., I., Zool. III., Rept, and Amph., 1842, p. 19, pl. 2, fig. 3. Graptemys lesueurti, Agassiz, L., Contr. Nat. Hist. U.8., 1857, I., p. 436; IL, pl. 2, fig. 10-12. Malacoclemmys pseudogeographicus, Davis and Rice, Bull. Ill, State Lab. Nat. Hist., I., No. 5, 1888, p. 56; Bull. Chicago Acad. Sci., 1883, Carapace six to eight inches long. Depressed, with a ver- tebral ridge, from which the sides slope like the roof of a house in young, but are more convex in large examples. Keels of second and third dorsal plates concave before the tubercles. Plastron distinctly emarginate behind, angulate on each side of the emargination. Very slightly emarginate in front, - Reptiles and Amphibians of Illinois. 235 Anterior lateral angles of gular plates slightly produced. Axillaries and inguinals equal. Head medium, its width con- tained about 6.4 times in length of carapace. Alveolar surface of jaws of moderate width, smooth, inner edges not elevated. Carapace greenish olive above, obscurely reticulated with yellow lines. A black spot on each tubercle of the vertebral ridge, and large imperfectly-defined black blotches at the poste- rior edges of costal and marginal plates. Plastron wholly or largely yellow in large examples, in young with a large central area black, lined with pale, and with short rays extending out along sutnres. Head, neck, feet, and tail, striped with yellow. Characteristic marks are as follows: a bright yellow comma- shaped spot behind each eye; a median stripe extending from the snout backward beyond the anterior edges of the spots behind the eyes. A spot on the symphysis of the mandible. Carapace of small example, 4.50 inches long, 3.75 wide, 1.62 high. Throughout the State, but less common north. Quincy, Jersey Co., Wabash Valley (Ridgway), Ohio River, Cairo. This species resembles M. geographicus in a general way, but is very different in the size of its head and the width and character of the grinding surface of the jaws. The comma- shaped spots are sometimes isolated, forming large transverse spots. The line which begins on the tympanum in M. geo- graphicus seems to have no counterpart in this species. The young appear to take animal food chiefly. Stomachs of some of those examined contained only small gastropod moliusks. One had eaten a worm belonging to the order of Oligochzeta, and a small percentage of vegetable matter. Most of the adults examined (from Quincy) had eaten noth- ing but the bulbs of a sedge (Cyperus phymatodes? ). Malacoclemmys geographicus, LeS. GrograpHic Tor- scoisk, Map TurtTxe. Testudo geographica, LeS., Jour. Acad. Nat. Sci. Phila., 1817, L., p. 86. Emys geographica, Say, Jour. Acad. Nat. Sci. Phila., 1825, 1V., p. 204. Testudo geographica, LeC., Ann. Lyc. Nat. Hist. N. Y., 1829, ILI, p. 108. 236 Illinois State Laboratory of Natural History. Emys geographica |in part], Dum. et. Bibr., Erp. Gén., 1835, Il. p. 256.— Holbr., N. A. Herp., 1842, I., p. 99, pl. 14—DeKay, Nat. Hist. N. Y.,I., Zo6l., ILI., Rept. and Amph., 1842, p. 18, pl. 4, fig. 7. Graptemys geographica, Agassiz, L., Contr. Nat. Hist. U.S, 1857, . I., p. 436; ITI., pl. 2, fig. 7-9. Malacoclemmys geographicus, Davis and Rice, Bull. I1.State Lab. Nat. Hist., 1., No. 5, 1888, p. 56; Bull. Chicago Acad. Sci., 1883. Carapace eight to ten inches long. Depressed, bluntly keeled. Keels of the dorsal plates regularly convex, posterior tubercles not very prominent. Sides a trifle less convex than in M. lesuewri. Outer margins of posterior marginal plates sinuate, and bluntly toothed. A wide notch between the two caudals. Plastron distinctly emarginate behind, slightly or not at all in front. Anterior angles of the gulars slightly pro- duced, outer lateral margins of these plates sinuated. Axillary and inguinal plates equal. Posterior margins of anal plates an- gulate. Head very large, its width contained about 4.6 times in length of carapace. Alveolar surfaces of jaws very wide, the inner edges almost meeting at the middle line. Carapace above olive brown, obscurely reticulate with nar- row yellow lines. An undefined black spot on the posterior end of the vertebral keel of each dorsal plate. Black blotches at sutures between costal and marginal plates, sometimes also a pair of black dots on the dorsals. Marginal plates beneath with reniform blotches, including one or more yellow lines. Axillaries, inguinals, and outer extremities of pectorals and abdominals marked with similar lines of dark and yellow. Plastron in adults largely yellow. Lines of union between plates gray or black; in young often with dark spots with pale centers in the anterior inner angles of abdominal plates. Head, neck, legs, and tail striped. Characteristic marks are as fol- lows: a longitudinaliy-placed spot behind each eye; a narrow dorsal line extending from the snout backward to about opposite the anterior margin of the spots behind the eyes, where it ter- minates abruptly; a stripe originating on each tympanum and thence extending downward and backward on the neck; and a stripe on the symphysis of the mandible. Reptiles and Amphibians of Illinois. 237 Carapace of small example 3.50 long, 2.87 wide, and 1.37 high with plastron. Throughout Illinois in the larger streams and lakes; abund- ant. Nippersink Lake, Green River in Henry county, Ogle county, Quincey, Peoria, Pekin, Little Wabash River, St. Fran- cisville, Little Fox River at Phillipstown, Cairo. This is a characteristic species of our waters and occurs in countless numbers in lakes, rivers, and flood-ground pools. Half the individuals which one may see perched upon logs dur- ing a day’s boating in August would, if examined, prove to be of this species. It is exceedingly common in the [Illinois and Mississippi rivers, where it is known (with M. lesueuri, from which it is not discriminated) as the mud turtle. It is timid and inoffensive in disposition, always sliding from bank or log when approached, and even when made captive shows none of the ferocity of “leather backs” and snapping turtles. The great strength of its jaws (unsurpassed in massiveness among our Chelonia) wouid enable it to inflict serious wounds if it were so disposed, and it is a little surprising to find such efficient weapons of offense unaccompanied by special rugged- ness of temper. The unusual width of the masticatory sur- faces of the jaws suggests Mollusca at once as the proper food of this turtle, and an examination of the contents of stomachs from numerous examples, young and adult, shows that it de- pends entirely on these for sustenance. Small examples taken at Quincy, [llinois, had eaten nothing but the gastropod Val- vata tricarinata. FAMILY CINOSTERNIDA. Shell bony, covered with horny plates. Carapace convex, with five dorsal, eight costal, one nuchal, twenty marginal, and two caudal plates. Plastron small or moderately large, rounded before, truncate or emarginate behind, consisting of three por- tions, the median of which is covered only by the abdominal plates and is immovably united to the carapace, while the ante- rior and posterior lobes are attached to the median fixed portion by transverse hinges. A single gular plate. Pectorals not . forming part of the bridge. Axillary and inguinal of each 238 Illinois State Laboratory of Natural History. side nearly or quite in contact between the abdominals and marginals. Head large, with gular barbels. Digits 5-4, fully webbed. Plastron moderately wide. Wings of the abdominal plates wide, with a deep groove behind. Head large, with arhom- boidal* plate ‘above.rs 5st weet ins ack ore CINOSTERNUM. Plastron narrower. Wings of abdominal plates narrow, not grooved behind. Head of moderate size, with no plate AbOVE seston one et see onte Cas ap AROMOCHELYS. CINOSTERNUM, SPIXx. Spix [Kinosternon] Rane et Testudinis brasiliensis species nove, 1825, p. 17. Wagler, Nat. Syst. Amph., 1880, p. 137. Carapace elongate, convex, smooth. Plastron moderately large, rounded before, truncate or slightly emarginate behind. Wings of abdominal plates wide, with a groove behind. In- guinal and axillary plates with the wings of the abdominals forming the bridge between plastron and carapace. Digits 5-4, fully webbed. Head large, with a large rhomboidal plate above. Tail with a terminal nail. Cinosternum pennsylvanicum, Gmel. Mup Torrotss. Testudo pennsylvanica, Gmel., Syst. Nat. 1788, I., p. 1042. Cistudo pennsylvanica, Say, Jour. Acad. Nat. Sci. Phila., 1825, IV., pp. 206, 216. Testudo pennsylvanica, LeC., Ann. Lyc. Nat. Hist. N.Y., 1829, IIL., p. 120. Cinosternon pennsylvanicum, Dum. et. Bibr., Erp. Gén., 1835, LL., p. 367. Kinosternon pennsylvanicum, Holbr. N. A. Herp., 1842, 1., p. 127, pl. 21.— De Kay, Nat. Hist. N. Y.,1., Zool. I11., Rept. and Amph., 1842, p. 21, pl. IL, fig. 4.—LeC., Proc. Acad. Nat. Sci. Phila., 1854, VIL., p. 183. Cinosternum pennsylvanicum, Davis and Rice, Bull. Ill. State Lab. Nat. Hist. I., No. 5, 1883, p. 54; Bull. Chicago Acad. Sci., 1883. Reptiles and Amphibians of Illinois. 239 Carapace about four inches long, smooth, elongate, strongly convex, abruptly rounded behind, margins entire or slightly sinnate. Nuchal plate small, widest behiud. Dorsals widest in front. Costals very large, transverse; marginals small and elongate. Plastron rounded before, truncate behind. Pectorals very much narrowed towards the middle line, forming no part of the bridge between plastron and carapace. Abdominals very large, wings with a deep groove behind. Axillary small and elongate; inguinal large, the two almost meeting between the wings of the pectorals and the marginals of the carapace. Preanals with strongly rounded outer margins. Head large, contracted towards the snout; jaws strong, the upper toothed. Chin with two tentacles; two other tentacles situated farther back on the throat. Legs short and strong, the anterior with a few tranverse scales above and a few small ones on the palm, posterior with scales on the soles but with no transverse ones above; digits 5-4, with imbricated scales above, claws sharp and curved. Skin of the posterior part of the body and of the tail tuberculate, the latter with a terminal nail. Olive-brown above, uniform or with a few small blackish spots; yellowish beneath, with the sutures and margins of the plates dark. Head brown above with paler spots and lines. Iris brown. Length of shell, 3.62; width, 2.62; depth, 1.50 Southern Illinois, not rare. Peoria ( Brendel), Mt. Carmel, common (Ridgway ). A small, obscurely-colored species, readily recognized by its single gular plate, convex shell, large head, with plate above, and gular tentacles. In the form of its head it resembles the snapping turtle and, like that reptile, bites viciously, though from its small size it is less to be feared. It preys largely on fishes, and will occasionally take the bait of the angler. The species is southern in its distribution and is probably not com- mon in this State away from the southern counties. It fre- quents muddy ditches by roadsides and the stagnant waters of swamps. The eggs are elongate. 240 = Lllinois State Laboratory of Natural History. AROMOCHELYS, GRAY. Gray, Cat. Shield Rept., 1855, p. 46. Carapace convex, smooth or keeled. Plastron small, nar-— row, rounded before, emarginate behind; bridges formed of the narrow wings of the abdominal and the contiguous axillary and inguinal of each side. Digits 5-4, fully webbed. Head of moderate size. No stripes on sides of head. Plates of carapace with black margins and radiating pale stripes.......... A. carinatus. Sides of head striped. Plates of carapace uniform in color. A, odoratus. Aromochelys carinatus, Gray. Lirrnm Mup Tortte. Aromochelys carinatus, Gray, Cat. Shield Rept. Brit. Mus., 1855, p. 47. Ozotheca tristycha, Agassiz, Contr. Nat. Hist. U.S., 1857, p. 425; IL., pl. 5, fig. 20-22. Aromochelys carinatus, Jordan, Man. Vert. N. U.%., 3d ed., 1880, p. 166.— Davis and Rice, bull. Ill. State Lab. Nat. Hist., L., No. 5, 1883, p. 58; Bull. Chicago Acad. Sci., 1883. Plates of the carapace imbricated, with black margins and radiating pale stripes. No stripes on the sides of the head. Otherwise similar to the following species. Lake county (Davis and Rice). This is a southern species which I have not taken in the State. It is included here on the authority of Messrs. Davis and Rice, who report it from Lake county. Aromochelys odoratus, Latreille. Musk Turtis. Testudo odorata, Latr., Hist. Nat. Rept., 1801, L., p. beers = Ann. Lye. Nat. Hist. N. Y., 1829, III., p. 122. Cistudo odorata, Say, Jour. Acad. Nat. Sci. Phila., 1824, pp. 206, 216. ‘ Staurotypus odoratus, Dum. et Bibr., Erp. Gén., 1835, II., p. 358. Sternotherus odoratus, Holbr., N. A. Herp., 1842, I., p. 183, pl. 22. — De Kay, Nat. Hist. N. Y., L, Zodl. LIL, Reptiles and Amph,, 1842, p. 22, pl. 7, fig. 13. Reptiles and Amphibians of Illinois. 241 Ozotheca odorata, Agassiz, L., Contr. Nat. Hist. U.S., 1857, L., p. 425; IL., pl. 4, fig. 1-6. : Aromochelys odoratus, Davis and Rice, Bull. [ll. State Lab. Nat. Hist., I., No. 5, 1883, p. 53; Bull. Chicago Acad. Sci., 1883. Shell elongate, convex, widest posteriorly, smooth or with an indistinct vertebral ridge in adults, distinctly keeled in young. Nuchal plate small, elongate, and widest behind in adults. First dorsal about half as wide behind as in front; the three following dorsals hexagonal; last dorsal about half as wide before as behind. Costals very large, covering the greater portion of the carapace. Marginals, excepting one on each side of the two caudals, narrow and elongate; the two mar- ginals next the caudals equal to the eaudals in size and about twice the width of the other marginals. Plastron small, rounded anteriorly, emarginate posteriorly. A single small gular; postgulars small; pectorals large, and not specially nar- rowed towards the middle line. Axillaries and inguinals meet- ing and with the wings of the large abdominal plates forming the bridge between the plastron and carapace. Head large; snout conical; jaws very strong. Two to four gular tentacles; two more widely separated ones on the throat and with numer- ous small tuberculiform tentacles in series on the skin of the neck. Anterior feet with about three transverse scales on their anterior surface and with a few small ones on the palms; pos- terior feet with transverse scutes on the heel. Digits 5-4, claws sharp and curved. Skin of legs and tail with numerous papille. Color of shell brownish black above and below in adults, more or less yellowish beneath in young. Head greenish olive or black with several stripes of yellow. A narrow stripe ex- tends from the tip of the snout to the upper part of the eye and is continued behind the eye by a stripe which terminates abruptly in a spot on the side of the head. Another stripe of the same color extends from beneath the nostril, where it meets its fellow of the opposite side, backward beneath the eye, and continues along the neck. There is a short stripe on each side of the lower jaw which may continue posteriorly on the skin of the neck. Other stripes are formed by the approximation of the light-colored tentacles. Very young examples have a distinct pale spot on the under side of each marginal plate, 242 Illinois State Laboratory of Natural History. showing above as a very narrow marginal spot. Posterior margins of legs and edges of webs of the feet yellow. Length of shell, 4.50, width, 3.19; depth, 2. Occurs in streams and lakes throughout the State. Deep _ Lake, Lake Co.; Chicago; Peoria (Brendel); Pekin; Little Fox River at Phillipstown; Running Lake, in Union Co.; Southern Ill., common (Butler). Few of our turtles change more with age than this. The carapace in young examples is sharply keeled and the posterior margins of the plates are elevated, giving an appearance of imbrication; the nuchal plate is square or transverse, while the marginals are nearly or quite as wide as they are long. In old examples there is no trace of a dorsal keel or appearance of imbrication. This is a small but strong and irritable species which occurs in considerable numbers in muddy lakes and rivers. FAMILY CHELYDRIDA. Shell bony, covered with horny plates. Plastron small, cross-shaped, with ten, nine, eight, or fewer, plates. Inguinals present or wanting. Head large, jaws naked. Digits 5-4, the two median longest; fully webbed. With two rows of marginal plates on each side. Head with symmetrical plates. Tail without dorsal crest. MacrocLEmys. With one row of marginal plates for each side. Plates of head small and indistinct. Tail with a dorsal series of elevated plates forming a crest............... CHELYDRA. MACROCLEMYS, GRAY. Gray, Cat. Shield Rept., 1885, p. 48. Cope [Macrochelys] Proc. Acad. Nat. Sci. Phila., 1872, p. 23. Carapace with a wide channel on each side of the middle line, with two rows of marginal plates. Plastron small; bridges narrow, each covered by an elongate plate within, and without by the contiguous axillary and inguinal. Head very large, with symmetrically disposed plates above. ; Reptiles and Amphibians of Illinois. 243 Macroclemys lacertina, Schw. ALLIGATOR SNAPPER. Chelydra lacertina, Schweigger, Prod. Mon. Chel., 1814, p. 23. Chelonura temminckii, Holbr., N. A. Herp., 1842, I., p. 147, pl. 24.— De Kay, Nat. Hist. N. Y., I, Zodl. III., Rept: and Amph., 1842, p. 9. Gypochelys lacertina, Agassiz, L., Contr. Nat. Hist. U.S., 1857, I, p. 414; IT, pl. 5, fig. 23-27. Macrechelys lacertina, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 58; Bull. Chicago Acad. Sci., 1883. Length of adults two feet or more. Head very large, with small imbedded plates above; jaws strong, the upper hooked. Shell with a deep channel on each side of the middle line, leaving three longitudinal convex ridges; emarginate and toothed behind. Tail long, without the elevated dorsal plates of Chelydra serpentina. Skin with numerous short tentacles. Quincy, Cairo, Grayville (Ridgway), Union county (C. W. Butler). This large species is similar to the common snapping tur- tle. It inhabits the larger streams of the south part of the State, though as Dr. Hoy has observed it in Wisconsin, it probably occurs occasionally in northern Illinois. It attains an unusual size, even exceeding in this respect the commoner species. Mr. R. Ridgway saw a specimen at Grayville, IIl., which was “large enough to walk with a man standing on his back.” A large example in the Illinois State Laboratory col- lection weighed when alive over eighty pounds. The width of the shell at the bridge of the plastron was 17.50 inches; the length of carapace 22.50 inches; and its depth 7.50 inches. The head measured 6.50 inches in width. Orbit one inch in diameter; eye small; iris black, with brown bars radiating from the pupil. CHELYDRA, SCHWEIGGER. Schweigger, Prod. Mon. Chel., 1314, p. 23. Cope, Proc. Acad. Nat. Sci., Phila., 1872, p. 23. Carapace uniformly convex in adults, obscurely channeled on each side of the middle line in young, with a single row of marginal plates. Plastron small, with nine or ten plates; bridges narrow, each covered by an elongate plate (not repre- 244 Illinois State Laboratory of Natural History. sented in higher turtles) within, and without by the contigu- ous axillary and inguinal. Head very large, with small plates above. Chelydra serpentina, Linn. SNapprne 'l'URTLE. Testudo serpentina, Linn. Syst. Nat., 1758, p. 199. Chelonura serpentina, Say, Jour. Acad. Nat. Sei., Phila., 1825, IV., pp. 206, 217. Testudo serpentina, LeC., Ann. Lyc. Nat. Hist. N. Y., 1829, IIT.. p. 127. Emysaura serpentina, {in part], Dum. et bibr., Erp. Gén., 1835, IL., p. 350. Chelonura serpentina, Holbr., N. A. Herp., 1842, L., p. 139, pl. 23.—De Kay, Nat. Hist. N.Y.,1I., Zo6l. III., Rept. and Amph., 1842, p. 8, pl. 3, fig. 6, young.— Kenn., Trans. Ill. State Agr. Soe., 1853-54, I., p. 591. Chelydra serpentina, Agassiz, L., Contr. Nat. Hist. U. S., 1857, I., p. 417; I1., pl. 4, fig. 13-16, and pl. 5, fig. 18, 19.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., L., No. 5, 1883, p. 53; Bull. Chicago Acad. Sci., 1883. Length from two to four feet. Carapace oval in outline seen from above, depressed, rounded in front, toothed behind. Dorsai plates nearly equal in size; costals but little longer; marginals very small. Plastron very small, leaving the greater part of the ventral surface of the animal exposed. Gular plates wanting; post-gulars small. Abdominals large, not forming part of the bridge between the carapace and plastron. Bridge narrow, covered by the axillary, inguinal, and, in great part, by an elongate extra plate. Head large; snout pointed; both jaws with a median tooth. Several gular tentacles. An- terior legs with transverse scales in front. Soles with small round scales. Posterior legs with transverse scales before and with both transversely elongate and round scales on the soles. Digits 4—5. Tail long, tapering, with a series of compressed and elevated plates above, and beneath with a series of flat paired scales. Blackish brown above, pale yellow beneath. Superior surface of the head, eyelids, and the jaws more or less speckled and lined with brown. Length of shell, 4.50; width, 3.50; depth, 2.50. Measure- ments from small example. Reptiles and Amphibiwns of Illinois. 245 Nippersink Lake, Cook Co. (Kennicott); Green River, at Geneseo; Quincy; Peoria; Havana; Normal; Champaign; Union Co.; Mt. Carmel (Nat. Mus.). This is one of our largest reptiles. It is extremely pug- nacious and is to be handled carefully on account of the readi- ness with which it uses its sharp and powerful jaws. A bite. from one of the larger examples would probably amputate a finger, at any rate do serious harm. Their food consists of all manner of small animals, such as fishes, frogs, reptiles, and young water birds. They are reported to have an especial fondness for young ducks. The eggs are deposited in holes dug in the sand along the banks of creeks, in June aud July. The flesh is esteemed by many as a luxury, and the fishermen along the Illinois River find ready sale for those captured in their nets. The carapace in young turtles is much rougher than in adults, in consequence of the greater prominence of the radiating carine of the plates. Young just from the egg are about 3.50 inches long, with very rough shell. The snout is provided with a small, horny, pointed cap, with which the shell of the egg is broken. Young kept in an aquarium had an amusing way of burying them- selves in the sand, leaving only the tip of their snout exposed; when fall came on they buried themselves completely for hi- bernation. The writer has seen a pair of young scarcely less remarkable in their way than the noted Siamese twins. They were attached side by side for the most of their lengths. Both, as far as could be seen, were perfectly developed, and both were alive. The larger turtle was quite as strong as other turtles of the same age; the other was less strong, but its hold on life was not apparently feeble. FAMILY TRIONYCHIDA. Body flattened; shell covered with a continuous skin, gen- erally cartilaginous at the margins. Head slender, covered _ with soft skin; nostrils opening at the end of a fleshy probos- cis; horny coverings of jaws concealed at the sides by fleshy lips. Digits 5-5, with large webs, first three with claws, the fourth and fifth clawless and concealed in the webs. Aquatic. 246 Illinois State Laboratory of Natural History. Nasal septum with a ridge on each side. Edge of upper jaw Bernina: y a skies estes a ah eee eae ae ASPIDONECTES. Nasal septum with no ridges. Edge of upper jaw serrate. AMYDA. - ASPIDONECTES, WAGLER. Wagler, Nat. Syst. Amph., 1830, p. 134. With a ridge on each side of the nasal septum. Nostrils terminal. Hdge of upper jaw serrulate. Head a trifle wider than in Amyda. Aspidonectes spinifer, LeS. Sorr-sHeLiep Turtis, LEATH- ER-BACK. Trionyx spiniferus, LeS., Mem. Mus., 1827, XV., p. 258. Aspidonectes spinifer, Agassiz, L., Contr. Nat. Hist. U.S., 1857, I., p. 408.— Jordan, Man. Vert. N. U.S., 3d ed., 1880, p. 168.— Smith. Geol. Surv. Ohio, Zoél. and Bot., 1V., 1882, p. 668. —Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I, No. 5, 1883, p. 52; Bull. Chicago Acad. Sci., 1883. Length about eight inches. Carapace greatly depressed, with a slight, convex, longitudinal ridge anteriorly, with small tubercles on its anterior margin, and in some specimens with the entire surface roughened with small grain-like elevated points. Plastron large, anterior, leaving the posterior legs ex- posed. Head small, pointed, with a fleshy proboscis bearing the nostrils. Horny covering of the jaws concealed at the sides by fleshy lips. Legs strong, anterior pair with several transverse scales above, posterior with a single large scale. Feet with marginal and interdigital webs. Digits 5-5, the first three on each foot with claws, the remaining two of each foot with no claws and concealed in the webs. Color vlive-brown above. Carapace with round, brown, pale-margined spots, those nearest the middle being the largest; the margin at the sides and behind pale, bounded within by a blackish line. A pale stripe, edged with black, extends from the snout to the eye, and behind the latter continues backward and downward to the side of the neck. A similar stripe ex- tends backward from each angle of the mouth. Superior sur- face of the neck with small blackish spots; inferior surface of Reptiles and Amphibians of Illinois. 247 the same spotted and reticulate with black. Legs above and feet above and below marked with black. Young examples sometimes show a line of blackish specks on the under side of the plastron extending from the anterior legs to the outside of the posterior pair. Length of carapace, 6.00; width, 5.50; depth, with plas- tron, 1.37. Throughout the State. Rock Creek, Plano; Oregon; Quincy; Peoria (Brendel); Bluff Lake, Union Co.; Wabash River, Mt. Carmel ( Ridgway ). Very similar to Amyda mutica in form and habits, and perhaps the two should be placed in one genus. They may be distinguished by the presence or absence of the septa of the nostrils, as described. The round ocellate spots of the carapace and the black-marked feet of this species are characteristic. The habits of the two, so far as known, are the same. Both species appear in the fish markets at Peoria, but are not dis- criminated, all passing under the name of soft-shells or leather- backs. AMYDA, FITZINGER. Fitzinger, Syn. Rept., 1843, p. 30. Margin of upper jaw distinctly serrate. Nostrils slightly inferior. No ridges on the nasal septum. Head more slender than in Aspidonectes. Amyda mutica, LeS. Sorr-sHeLLep TurtTLE, LEATHER-BACK. Trionyx muticus, LeS., Mem. Mus., 1827, XV., p. 263.—Holbr., N. A. Herp., 1842, IT., p. 19, pl. 2. Amydu mutica, Agassiz, L., Contr. Nat. Hist. U.S., 1857, L, p. 399; IL., pl, 6, fig. 6. 7.— Jordan, Man. Vert. N. U.S., 3d ed., 1880, p. 168. — Smith, Geol. Surv. Ohio, Zo6). and Bot., IV., 1882, p. 668.— Davis and Rice, Bull. Il]. State Lab. Nat. Hist., I., No. 5, 1883, p. 52; Bull. Chicago Acad. Sci., 1883. Length about eight inches. Carapace and plastron carti- laginous in great part, greatly depressed, smooth. Plastron anterior, leaving the posterior legs exposed. Head small, slen- der, pointed; nostrils opening in the extremity of a short, fleshy proboscis. Jaws contracted, the horny covering con- 3 248 Illinois State Laboratory of Natural History. cealed at the sides by fleshy lips. Legs strong, with marginal and interdigital webs, anterior with a few transverse scales above, posterior with a single large scale. Digits 5—5, the first three of all the feet with claws, the two outer without. claws - and concealed in the webs. Dorsal surfaces of head, legs, and carapace olive-brown, the carapace with small obscure blackish spots and short lines, and with a pale margin preceded by a blackish line. Plastron and the head and legs beneath white and unmarked. A pale, black-edged stripe extends from the snout to the eye, and is continued behind the latter backward and downward to the side of the neck. Length of carapace, 6.50; width, 5.00; depth, with the plastron, 1. In running water throughout the State. Mackinaw Creek, Woodford Co.; Quincy; Illinois River, Peoria; Wabash R., Mt. Carmel (Ridgway); Ohio River, Cairo. The leather-back is never found at any great distance from water. The time for oviposition is in the fore part of July, and at this season the female searches out a sloping bank up which she creeps a short distance and deposits her eges in a hole dug in the sand. At other seasons these turtles remain in the water, though they may often be seen at its edge basking in the sun. They are expert swimmers and can move with considerable speed against a strong current. Hundreds of them may be seen at the foot of dams across the Illinois River in July, where they apparently collect in at- tempting to get further up the stream. They take the hook occasionally, and their flesh is highly esteemed as food. ORDER SAURIA. Body elongated and covered with numerous small imbri- cated scales. Four limbs (rarely wanting). Shoulder girdle always present. Hyelids and external organs of hearing pres- ent. Jaws with teeth set in a continuous groove; jaws not dilatable. Heart with three chambers. Urinary bladder pres- ent. Oviparous, with a few exceptions. Our lizards are almost confined to the southern third of the State, where two species are very common. The joint - Reptiles and Amphibians of Illinois. 249 snake occurs in the central part of the State, but grows more common southwards. The six-iined lizard appears to be very local in its distribution in the State, and has only been ob- served in the central and northern parts. All our species are insectivorous. They are perfectly harmless to man, although large examples of the blue-tailed lizard have received the name “yed-headed scorpion’’ under the impression that they are poi- sonous. This cannot, however, be said of all lizards; a large western species (Heloderma suspectum) introduces a poison into wounds produced with its teeth, which may affect the sys- tem very injuriously. Recent lizards are nearly all terrestrial in habit, and none of the Illinois species are aquatic. SYNOPSIS OF THE FAMILIES REPRESENTED IN ILLINOIS. Tongue not bifid. Legs four. Scales imbricated, carinated above. A fold of the skin on each side of theneck. Proxi- nalend ot clavicle simples. of I@uANID&. Tongue deeply bifid, with an ensheathing base. Legs wanting; or with a pair of rudimentary hind legs. Body serpenti- form. A lateral longitudinal groove. Proximal end of IPAGIEG SURI LOSe Koma eo eta clears ne tal ee Te ANGUID&. Tongue bifid, but with no ensheathing base. Legs four. Two transverse subgular folds of the skin. Scales granular above, large below. Premaxillary sin®le. Clavical dilated MAERUA OMS e.-. ui o k wade Women a a ce TEIDA. Tongue notched at the tip. Legsfour. No transverse subgu- lar folds. Scales smooth and about uniform in size above and below. Premaxillary double. Proximal end of clavi- CUENTA OBS SRO arts ROR ARI ORE a ea ae ER ScIncrp &. FAMILY IGUANIDZ. Tongue short, thick, fleshy, but slightly free in front, scarcely bifid. Teeth attached to the inner face of the jaws, pleurodent. Femoral pores present or absent. Premaxillary single. Clavicle with simple proximal ends. Mesosternum au- chor-shaped. A xiphisternal fontanel present. Abdominal ribs generally wanting. 250 Iilinois State Laboratory of Natural History. SCELOPORUS, WIzG. Wiegmann, Isis, 1528, p. 369. Holbrook, N. A. Herp., 1842, II., p. 73. Hoffmann, Bronn’s Thier-Reich, 1888, VI., Reptilien, p. 1238. Body somewhat depressed. Head short, convex above; plates mostly small. Interparietal largest. Nostril near the margin of the snout, opening ina single plate. Several series of supraciliaries. No subgular fold. A short fold on each side of the neck. Scales imbricated, those of the back and tail carinated, those of the belly smooth. Tail rather short, depressed and thickened at the base. Femoral pores well de- veloped. No anal pores. Sceloporus undulatus, Bosc. Brown Swirt, PINE-TREE LIzarp. Stellio undulatus, Bosc., Latreille’s Nat. Hist. Rept., 1801, IL., p. 40. Lacerta hyacinthina (3) and L. fasciata (2), Green, Jour. Acad. Nat. Sci. Phila., 1818, p. 349. Agama undulata, Harlan, Med. and Phys. Res., 1853, p. 140. Tropidolepis undulata, Dum. et Bibr. Erp. Gén., TV., 1837, p. 298. —Holbrook, N. A. Herp., 1842, II., p. 73, pl. 9.—De Kay, Nat. Hist. N. Y., I., Zo6l. IIL, Rept. and Amph., 1842, p. 31, pl. 8, fig. 16.—Gray, Cat. Spec. Lizards in Coll. brit. Mus., 1845, p. 208. Sceloporus undulatus, subsp. undulatus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No.5, 1883, p. 48; Bull. Chicago Acad. Sci., 1883. Total length about six and a half inches. Scales large above, sharply carinate and mucronate, many of them with notches on each side of the apex, about forty-five in a row from the parietals to a point opposite the vent. Scales below not carinate nor mucronate but: with an apical notch. Scales in a transverse row midway between the fore and hind legs, about forty-five. Femoral pores from twelve to sixteen. Two frontal plates. Five series of supraciliaries, one of large plates, and an inner one and three outer series of small obtusely cari- nate ones. From two to four small frontoparietals. Four small parietals and a single very large interparietal. From Reptiles and Amphibians of Illinois. 251 six to eight prefrontals. Internasals about ten, varying greatly in number, most of them obtusely carinate. A single nasal plate with the nostril opening in its posterior part. Au- ricular aperture large, bordered anteriorly with five acutely- pointed scales. Three rows of small supralabials. On the side of the neck behind the ear is a fold of the skin overlying a vertical impression which is lined with minute scales. Scales on the superior surface of the legs carinate; those on the pos- terior surfaces of the humeri and femora very small. All the scales on the tail are carinate and verticillated. A curved lin- ear impression behind the vent. Color above grayish brown, with a series of transverse curved black bars on each side of the back. Tail and legs above barred with black. All the bars bordered posteriorly with pale. A narrow black line extends from the eye posteri- orly over the ear and fore leg, and may terminate behind the latter or pass into a brown band which continues along the side of the abdomen. This last is often obscure or wanting. A narrow black line crosses the head from one supraciliary ridge to the other. Color beneath grayish white or bluish; in females and young with no, or few, green or blue scales on the throat, and with the throat, sides, and ventral surfaces of the femora speckled with black, generally with a short, dark medi- an band before the vent; in males with most of the throat and a large elongate patch on each side of the abdomen of a me- tallic blue or green color. Length from tip of snout to vent, 3.00; from vent to tip of tail, 3.62. Southern Illinois, abundant. Grafton, Belleville (Nat. Mus. ), Cobden, Anna, Johnson Co., Cave in Rock, Villa Ridge, Cairo. This is by far the most abundant lizard in Illinois. It seems to be confined chiefly to the southern third of the State; as far as I know no specimens have been collected north of Grafton, in Jersey county. Dr. Hoy, however, took a specimen in Wisconsin in 1850, and we shall not therefore be surprised if after more careful collecting the species is found to occur farther north in [llinois. But it is always to be remembered that the great change in the character of this State wrought 252 Illinois State Laboratory of Natural History. in the last forty years by the felling of timber, cultivation of the soil, and draining of ponds ard swamp lands, has had its effect upon our fauna, and the capture of a species in central or northern Illinois forty years ago is not necessarily evidence as to the present distribution of the species. Southern birds and serpents which were in early days not rare in the latitude of Bloomington and Peoria are now not found away from south- ern Illinois, some of them not in the State at all. The food of the brown swift consists of insects. The stomach of an exam- ple from southern Illinois, dissected Jan. 12, 1885, was nearly filled with small ants (Crematogaster), and contained besides, two beetles (one a carabid, the other a chrysomelid) and a cricket. It is commonly seen on old rail fences or in the woods. on logs. It runs with great rapidity, and often eludes the col- lector by scampering up the trunks of trees. Famity ANGUIDA. ‘Legs wanting or two rudimentary posterior legs present. Body long and serpentiform, with lateral longitudinal grooves. Head pyramidal. Tongue bifid, exteusile, with squamiform papille. Teeth placed on the inside of the jaws and project- ing inwards. OPHISAURUS, DaupIn. Daudin, Hist. Nat. Rept., 1808, VIL., p. 346. Dum. et Bibr., Erp. Gén., 1889, V., p. 421. Holbrook, N. A. Herp., 1842, IT., p. 139. Legs wanting. Har-opening present, small. Eyelids well developed. A deep groove along each side of the abdomen. Two longitudinal series of teeth on the roof of the mouth borne on the pterygoids and palatines. Several supranasals. Nostril lateral, opening through a single plate. Sternal bones represented by rudimentary cartilages; clavicles not meeting at the middle line. Pelvis rudimentary and cartilaginous, the cartilages of opposite sides not meeting at the middle line, each bearing a minute cartilage representing femora. The species described is the only one in the genus. Reptiles and Amphibians of Illinois. 258 Ophisaurus ventralis, Linn. Jornr-sNakE, GLASS-SNAKE. Anguis ventralis, Linn., Syst. Nat., 1766, p. 391. Ophisaurus ventralis, Dum. et Bibr., Erp. Gén., V., 1889, p. 423. — De Kay, Nat. Hist. N. Y., IL, Zod]. III., Rept. and Amph. 1842, p. 34; Holbr. N. A. Herp., 1842, II., p. 139, pl. 20.—Gray, Cat. Spec. Lizards in Coll. Brit. Mus., 1845, p. 56. Ophiosaurus lineatus, Kenn., Trans. Il]. State Agr. Soc., 1853-54, I., p. 591. D estiris ventralis, Davis and Rice, Bull. Il]. State Lab. Nat. Hist., I., No. 5, 1883, p. 48; Bull. Chicago Acad. Sci., 1883. Total length about twenty-eight inches. Body long and slender. Scales equal in size above and below, those on the pos- terior part of the body and on the tail with a slight median ridge forming obtuse longitudinal carine. Aperture of the ear small. A deep groove extending from a short distance behind the ear along the sides of the abdomen to the vent. Scales in a longi- tudinal row from the parietals to a point opposite the vent, about one hundred and twenty-five. Scales in a transverse row about midway between the head and vent, twenty-four. Head continuous with the body, compressed forwards and pointed. Two series of supraciliary plates. Frontal large, widest behind. Two small frontoparietals. Two iarge parietals and a pentag- onal interparietal. Two prefrontals. Internasal large, as broad as long. Seven supranasals. Nasal plate small. Ros- tral slightly wider than high. Eleven supralabials, the ninth and tenth largest. Marginal series of infralabials elongate and narrow. Color above clay yellow, or brown or greenish olive, with a median longitudinal stripe of brown, and on each side above the lateral grooves a wide black or brown stripe including three narrow whitish lines. On the sides of the abdomen be- neath the lateral grooves are two narrow dark stripes. Beneath whitish, unspotted. Length of body to the vent 28.25; tail beyond vent, 19. Throughout the State; rare in the north; formerly common in central and southern Illinois, but now fast disappearing. Cook Co. (Kennicott), Stark Co. (Boardman), Peoria ( Bren- del), Normal, Wabash Valley (Ridgway). The colors of [llinois specimens of the joint snake are generally disposed in distinct longitudinal dark and pale stripes, 254 Illinois State Laboratory of Natural History. as described. Occasional specimens occar in which the dark of the sides is intimately mingled with pale, and the pale stripes of the back may be thickly speckled with black or brown. This form seems to be more common farther south. In young ~ examples the dark and pale stripes of the side are of about equal width. Formerly this was a very common species in dry prairie regions, but its haunts have been destroyed by the cultiva- tion of the soil, and few can now be found. Many of those now captured have stubbed tails, these organs having been pre- viously broken and partially reproduced. The small boy de- voutly believes this species to possess the power of “coming together” again after being broken into fragments. It should be unnecessary to state here more than that it is only the long tail which breaks, and that this appendage is scarcely more brittle than are the tails of other lizards. An example dis- sected had eaten crickets. The rudimentary sternal bones are imbedded in the mus- cles a short distance behind the head. The sternum is a thin, transversely elongate plate of cartilage, and lies behind the other bones of the arch. The scapula is largely, perhaps wholly, bone. The supra-scapula is well developed and is cartilaginous. The coracoid is large, transversely placed, and meets its fellow of the opposite side; it is also cartilaginous. The clavicle is a slender, curved bone, which is attached at its outer extremity to the ventral surface of the supra-scapula, The pelvic bones consist of a rather long ilium, attached to the transverse process of the fifty-seventh vertebra, and a flat- tened bone, supposed to represent ischium and pubis combined, at its free extremity. In a small acetabulum in the surface of the latter fits a minute cylindrical femur. The bones are fully ossified. Those of the two sides are separated by a considerable interval. They are imbedded in muscle slightly in front of the vent. The rudiments are probably quite variable. The figures given by Dr. Shufeldt (Proce. U.S. Nat. Mus., 1880, p. 399) and those in Bronn’s Thier-Reich do not agree, and neither agree with dissections made by the writer. Reptiles and Amphibians of Illinois. 255 FAMILY TEIDA. Tongue long, bifid, with squamiform papille. Teeth solid, pleurodont. Head pyramidal, with large, regularly dis- posed plates above. One pair of supranasal plates. Nostril opening in the midst of a plate, or between two plates. Scales of the back granulate or carinate; scales on abdomen large. To these, other characters used by Prof. Cope may be added as follows: A xiphisternal fontanel; premaxillary single; clavi- cles dilated proximally; mesosternum cross-shaped. CNEMIDOPHORUS, W AGLER. Wagler, Syst. Amph., 1830, p. 154. Holbrook, N. A. Herp., 1842, II., p. 109 (Ameiva), Hoffman, Bronn’s Thier-Reich, 1883, VI., Reptilien, p. 1076. With two subgular folds. Tongue with no sheath, free behind. Maxillary teeth compressed, the posterior teeth tri- cuspid. Femoral pores present. Scales granulate above, trans- versely elongate and quadrangular on the belly. Digits 5-5. Cnemidophorus sexlineatus, Linn. Lacerta 6-lineata, Linn., Syst. Nat., 1766, p. 364. Cnemidophorus sex-lineatus, Dum. et Bibr., Erp. Gén., 1839, V., siok: ee sex-lineata, Holbr., N. A. Herp., 1842, II., p. 109, pl. 15. Cnemidophorus sex-lineatus, Gray, Cat. Spec. Lizards in Coll. Brit. Mus., 1845, p. 21.—Davis and Rice, Bull. Il]. State Lab. Nat. Hist., I., No. 5, 1888, p. 47; Bull. Chicago Acad. Sci., 1883. Total length about seven inches. Body slender. Tail long, cylindrical, and tapering. Posterior legs much larger than the anterior, with long slender digits. Head small, com- pressed before the eyes and pointed. Scales on the back and sides, the superior and posterior surfaces of the posterior legs, the posterior surfaces of the anterior legs, and on the throat, minute and granular. Scales of the ventral surface of the abdomen large and quadrangular; about thirty in a longitudi- nal row and eight in a transverse row. Femora with a ridge bearing sixteen pores. Scales of the tail large, verticillated, carinate. Two well-marked gular folds. Har-opening large, 256 [lltnois State Laboratory of Natural History. circular, exposing the tympanum. Frontal plate wider in front and rounded. Parietals small. Inner series of superciliaries composed of four plates. Prefrontals in contact for a short distance at the middle line. Internasal large, hexagonal, wider than long. Nasals large, touching at the middle line, the nos- tril opening in their lower part. Rostral produced backward and acutely angled between the nasals. Two loreals. Six supralabials, the third largest. Five elongate, narrow infrala- bials. Color above brownish gray, with three narrow yellow longitudinal lines on each side with black spaces between them. Head brown or blue-gray. Legs brown. Entire under parts bluish white. : Length of body to the vent, 2.25; tail beyond vent, 4.50. Local in its distribution and not common; probably occurs in suitable localities throughout the State. Ottawa, Henry, Cave in Rock (?). An exceedingly active lizard and consequently difficult of capture. It occurs in dry sandy regions, where it may be seen by roadsides among shrubbery, or running along the lower rails of fences. It never resorts to trees, but trusts to its swiftness and skill in dodging from one covert to another to escape its pursuers. The only specimens the writer has collected in the State were taken at Henry, in a dry sunny field on the banks of the Illinois River. They were not rare in that particular local- ity, but were not seen any where else, though the country round about was scoured for miles. I think I saw an individual of the species at Cave in Rock on the Ohio River during the sum- mer of 1883, but it disappeared so completely and suddenly, before I could get a fair glimpse of it, that I cannot be sure about it. An example has recently been sent to me from Ottawa. FAMILY SCINCIDA.: Tongue very slightly notched at its tip, free in front, with squamiform papille. Teeth pleurodent. No gular or lateral folds. Nostril generally in one plate. No femoral or inguinal pores. Basal portion of scales ossified. Premaxillee double. Xiphisternal fontanel generally wanting. Reptiles and Amphibians of Illinois. 257 With two supranasals. Lower eyelid scaly. Anterior margin of ear-opening with several projecting scales... . HUMECEs. No supranasals. Lower eyelid with a transparent central part. Kar-opening with no projecting scales........ OLIGOsoMA. EUMECES, WIEGMANN. Wiegmann, Herp. Mex., 1834, p. 36. Body fusiform, cylindrical. Head pyramidal, four-sided. Two supranasals. Lower eyelid scaly. Ear-opening large, generally with a few projecting scales at its anterior margin. Scales smooth, large. Tail cylindrical and tapering. Toes 5-5. Eumeces fasciatus, Linn. Biun-rarmep Lizarp, Rep- HEADED LizARrD, SCORPION. Lacerta fasciata, Linn., Syst, Nat., 1758, p. 209. Scincus erythrocephalus, Gilliams, Jour. Acad. Nat. Sci., Phila., 1818, L., p. 461. Plestiodon quinquelineatum, Dum. et Bibr., Erp. Gén., V., 1839, p. 707. Scincus fasciatus, De Kay, Nat. Hist. N. Y.,I., Zo6l. III., Rept. and Amph. 1842, p. 29, pl. 8, fig. 17. — Holbr., N. A. Herp., 1842, IT, p: 127,-pl. 18: Scincus quinquelineatum, Holbr., 1. c., p. 121, pl. 17. Plestiodon erythrocephalus, Holbr., 1. ¢., p. 117, pl. 16. Plestiodon quinquelineatum and P. fasciatum, Kenn., Trans. Iil. State Agr. Soc., 1853-54, I., p. 591. Eumeces fasciatus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 18838, p. 47; Bull. Chicago Acad. Sci., 1883. Eumeces obsoletus, Davis and Rice, Bull. Chicago Acad. Sci., 1883. Total length about eight inches. Body moderately slen- der, tail long and tapering. Scales smooth, about equal in size above and below, median row beneath the tail largest and transversely elongate. [Fifty-three scales in a longitudinal row from the occipital plates to a point opposite the vent. Thirty scales in a transverse row about midway between the fore and hind legs. Lar-opening large, somewhat elongate vertically, in young examples with a few projecting scales at its anterior margin. Frontals and parietals the largest of the head plates. Six large supraciliaries. Two prefrontals. A single internasal. Two supranasals, occasionally four. One 258 Illinois State Laboratory of Natural History. small postnasal. Two loreals, the anterior the smaller and separating the supranasals and prefrontals. Supralabials nine, the eighth largest, the sixth alone reaching the orbit. Six in- fralabials, the sixth largest. Color above dark chestnut-brown or, in old examples, brown- olive with five longitudinal blue stripes, the median of which bifurcates at the base of the head and the outer on each side extends through the ear forward: on the upper lip. Posterior half of the tail blue or bluish slate-color. Lines often obscure, sometimes wanting. Beneath white or pale bluish. Length of body to vent, 3.19; tail beyond vent, 5.50. Common in the southern counties of the State, rare else- where; probably does not now occur in northern Illinois. Cook Co. (Kennicott); Cobden; Anna; Dug Hill, Union Co.; Johnson Co.; Cairo. ; In large specimens a few striew occur on each of the dorsal scales. The submentals and anals are in some finely reticulate. The ventral scales present an appearance of striation, but with a lens this is seen to be due to fine dark lines radiating from the basal part of the scale. Very old examples of this species represent the Scincus erythrocephalus of Gilliams. This form is commonly known as the red-headed scorpicn in south- ern Illinois, and has been mistaken for Humeces obsoletus, a species which does not occur in Illinois. As illustrating the changes which take place in this species with age, the follow- ing examples are given: 1. Total length 4.50 inches. Stripes distinct. Head like the back in color. Width of head equal to distance from tip of snout to anterior margin of the interpari- ° etal plate. vo 5.50 inches long. Stripes distinct. Head paler brown anteriorly than elsewhere. Width of head equal to distance from snout to middle of interparietal. 3. 6.25 inches long. Stripes less distinct. Head reddish brown. Width slightly greater than distance from snout to middle of interparietal. Reptiles and Amphibians of Lllinois. 259 4. 6 inches long. Stripes very obscure. Head of a uni- form pale brown color. Width equal to distance from snout to posterior margin of interparietal. 7.50 inches long. Median stripe lacking, color of back uniform brown, lateral stripes nearly wanting. Head brown, width equal to distance from snout to middle of first occipital plates. or 6. 950 inches long. No stripes, pale grayish brown above. Head pale red, width equal to distance from snout to posterior margin of the occipital plates. The last is evidently an aged example, and lacks the pro- jecting scales commonly present in younger examples at the anterior margin of the ear-opening. The species is active, run- ning with equal address on the ground or on trees, though perhaps it is less commonly seen on the latter than the brown swift. When captured with the hand it attempts to bite, but is not, as far as my experience goes, able to do serious harm. OLIGOSOMA, GIRARD, Girard, Proc. Acad. Nat. Sei. Phila., 1857, p. 196. Body fusiform, cylindrical. Head short, pyramidal. No supranasal plates. Lower eyelid with a central transparent portion. EHar-opening large, with no projecting scales at its anterior margin. Scales smooth, of medium size. Tail cylin- drical and tapering. Toes 5-5. Oligosoma laterale, Say. Grounp Lizarp. Scineus lateralis, Say, Long’s Exped. to Rocky Mts., 1823, IT., p. 324. Lygosoma lateralis, Dum. et Bibr., Erp. Gén. V., 1839, p. 719.— Holbr., N. A. Herp., 1842, II., p. 133, pl. 19. Mocoa lateralis, Gray, Cat. Spec. Lizards in Coll. Brit. Mus., 1845, p. 83. Oligosoma laterale, Davis and Rice, Bull. Ill. State Lab. Nat. Hist. I., No. 5, 1888, p. 46; Bull. Chicago Acad. Sci., 1883. Small; total length about four and a quarter inches. Body cylindrical. Head small; snout short; superciliary region con- vex. ‘Har-opening large, exposing the tympanum. Scales 960 Lllinois State Laboratory of Natural History. about equal on dorsal and ventral surfaces; much smaller on the sides; largest on the ventral surface of the tail. Seventy scales in a row from the occipital plates to a point opposite the vent. Twenty-six scales in a tranverse row midway behind - the fore and hind legs. Frontal plate contracted to a point behind where the supraciliaries of opposite sides are but slightly separated. Supraciliaries in two series, the inner of four large plates, the outer of many very small ones. The two transverse prefrontals separated by the frontal or touch- ing at their inner angles. Internasal large. No supranasals. A single nasal; no postnasals. Two loreals. Supralabials seven, the sixth largest. Six infralabials. Color above light chestnut-brown, with a lateral dark brown or black stripe extending from the snout nearly to the tip of the tail, or terminating in older examples immediately behind the posterior legs. The brown of the middle of the back with a few serially disposed dark spots. Legs brown, marked with dark brown or black above. Beneath yellowish on the body; bluish on the tail. Length of body to vent, 1.75; tail beyoud vent, 2.50. Southern Illinois; not common. Cave in Rock. This is our rarest lizard. It frequents wooded regions and is found under rocks and among leaves. It is not known to ascend trees. ORDER OPHIDIA. Body greatly elongated and covered with horny imbricated (in a few cases granular and not imbricated) scales. Limbs wanting (rudiments of hind limbs present in the boa-con- strictor, pythons, and a few others). Shoulder girdle never present. yelids and external organs of hearing wanting. Mouth very dilatable, the bones of the jaws being loosely ar- ticulated. No urinary bladder. Oviparous or ovoviparous. Because of the superstitions associated with them serpents possess a peculiar interest for most people. The almost uni- versal dread in which they are held has probably been ac- quired in the majority of cases, having been instilled into the childish mind by fancied encounters of imaginative and igno- rant travelers in the tropics. Certain children, at any raté, who Reptiles and Amphibians of Illinois. 261 have not had such fictions recounted to them by nurse; or parent, or playmate, show no fear when serpents are first brought into their presence. The truth is that the number of poisonous species of a given region is not often large. In Illinois we have but four poisonous serpents in a total of about forty species; and the proportion of noxious to innoxious spe- cies is probably not much greater anywhere in the country. At the same time it must be acknowledged that the prevalent fear of snakes serves a very useful purpose in keeping children from being bitten by species really poisonous. The harmless kinds take advantage of the feelings they inspire, and simulate the behavior of their formidable relatives by coiling, striking, and even producing a semblance of the noise of the rattlers by causing the tail to vibrate rapidly in contact with dead vegetation. All, or nearly all, will use the teeth when pressed, but the bite is not followed by serious consequences. We have no very large species. Certain of the boas and pythons of tropical countries reach a great length—as much as fifty feet or more, it is asserted. The smallest, among which are our species of Carphophis, are not above a foot long. The food consists of living animals, generally swallowed alive, but sometimers picked up after having been killed by other agencies. The teeth serve merely as organs of prehen- sion, and the fangs, when present, are used only in striking. The young hatch from eggs, which are commonly deserted after being placed among decaying vegetable matter; but some species are known to guard them until the young come forth. Some are, it is believed, habitually ovoviparous; and from ob- servations made on our common species it is evident that many, at least occasionally, produce living young. Without fangs. Pupil of eye round. No pit between eye and nostril. Two series of subcaudal plates...... CoLUBRID®. With fangs. Pupil of eye vertical. A pit between eye and nostril. Some or all of subcandals united....Croranrp»®. FAMILY COLUBRIDA:. Teeth numerous, used only for prehension, the posterior ones sometimes larger than the others and grooved. With- 262 Illinois State Laboratory of Natural History. out fangs or poison glands. Head generally slender, always lacking the lateral pits which characterize our poisonous spe- cies. Pupil of eye round. Cephalic plates covering most of the head. Dorsal scales carinated or smooth. Subcaudal - plates in two series. Tail ranging from long to short, always without a rattle. This family contains most of our serpents. All are per- fectly harmless to man, but when cornered they often show considerable spirit in defending themselves. The slight wounds which they are able to inflict with their teeth heal almost as readily as scratches from a needle. The spreading adder, a dark form of which is known as the king snake, ap- proaches the moccasin and rattle snakes in shape of head and body, and is very generally believed to be poisor ous,— a belief which it encourages by extravagant behavior when disturbed. The food consists of fishes, frogs, mice, birds, and insects. Our species spend most of their time on the ground among vegetation. A few are expert climbers, while many of the common terrestrial species swim and dive readily when com- pelled to enter the water. The species of Nerodia and Regina are constantly found about water, where they depend upon fishes for sustenance. The eggs are often placed in loose de- caying vegetable matter, where their development is accelerated by the warmth due to the process of decomposition. Many of our species, perhaps most, or even all, may produce young alive. A SYNOPSIS OF ILLINOIS GENERA OF COLUBRID. 1 (15). Dorsal scales carinated. 2 ( 6). Anal plate entire. 3 (22). Rostral not wedged between internasals. ACS 57 Piwio: Wasalle..S as Fors nee esis eee meer HUTAINIA. 5 ( 4). A single nasal, grooved below nostril. TROPIDOCLONIUM. 6 ( 2). Anal divided. 7 (14). Loreal present. (12). Two nasals. 9 (26). Rostral normal in shape. 10 (27). Anteorbitals present, loreal not reaching orbit. 11 (28). Seales strongly carinated.............. NERODIA. GO Reptiles and Amphibians of Illinois. 263 12 ( 8). One nasal. 13 (18). Nasal grooyed below nostril............ REGINA. SM TOU BOSONE 25 65... occ eee ew ne STORERIA. 15 ( 1). Dorsal scales smooth. 16 (28). Anteorbitals present. Loreal not reaching orbit. 17 (19). One nasal, not grooved below nostril. Color SII etary ara Rian eek Soe eee CYCLOPHIS. 1S (13). One nasal plate, not grooved below nostril. Color C1 NR Na OR OAR PHYLLOPHILOPHIS. 19 (17). Two nasal plates. 20 (24). Anal divided. 21 (25). Upper anteorbital large, lower small. No pale BN aa SRG ket Beary cont ee hr fe Sood oa CoLUBER. 22 ( 3). Rostral wedged between internasals. Two pre- ELOWEANS poe Seo eatin PN N PITYOPHIS. 23 (11). Dorsal scales feebly carinated. Size large. HLAPHIS. emt )peAMial OniIre io. ual oa savee Dicgeecd ok OPHIBOLUS. 25 (21). Anteorbitals about equal in size. A pale ring at MnP Headey ete. Seo ele eae os DrapDopHis. 26 ( 9). Rostral plow-shaped. With an azygos plate. HETERODON. 27 (10). No anteorbitals. Loreal reaching the orbit. Hapa. 28 (16). No anteorbitals. Loreal reaching the orbit. 29 (31). One nasal. 30 (32). Nasal grooved below nostril. Dorsal rows 19-21. Hyprops. 31 (29). Two nasals. Dorsal rows 15 or 17..... VIRGINIA. 32 (30). Nasal not grooved below nostril. Dorsal rows 13. CARPHOPHIS. EUTAINIA, Bp. aAnp Gtr. Bd. and Gir., Cat. N. A. Rept. Pt. 1, 1853, p. 24. Dorsal scales carinated, in from nineteen to twenty-one rows. ftostral normal. Two internasals. Two prefrontals. Two nasals, the nostril between. Loreal present. One anteor- bital. Three postorbitals. Anal entire. Body moderately 4 264 [illinois State Laboratory of Natural History. slender, with more or less evident yellow or greenish longitu- dinal stripes. Often ovoviparous. Lateral stripes on the third and fourth rows of dorsal seales. Dorsal scales in 19 rows. The dark color of the back uni- form: Body: slendaer-3s4008 3s nie E. SAURITA. Dorsal scales in 21 rows, with more or less distinct black spots between the stripes: Stouter than H. saurita. K. RADIX. Lateral stripes on the second and third rows of scales. Dorsal sealesin 19: roweas*. Se. oe eee FE. SIRTALIS. Dorsal séalés in 21 rows 2) Oh. aa E. VAGRANS. Eutainia saurita, Linn. Garter SNAKE, RIBAND SNAKE. Var. saurita. Coluber saurita, Linn., Syst. Nat., ed. 12, 1766, L., p. 385. Hutainia saurita, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 24. Hutenia saurita, Davis and Rice, Bull. Il. State Lab. Nat. Hist., I., No. 5, 1888, p. 38; Bull. Chicago Acad. Sci., 1883. Tropidonotus saurita, 8. Garman, Mem, Mus. Comp. Zod6l., 1883, pp. 28, 137, pl. 3, fig. 2. Var. faireyi. Hutainia faireyi, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 25. Hutenia faireyi, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., L, No. 5, 1888, p. 39; Bull. Chicago Acad. Sci., 1883. Tropidonotus saurita, var. faireyi, 8S. Garman, Mem. Mus. Comp. Zodl., 1883, p. 137. Var. proximus. Coluber proximus, Say, Long’s Exped. to Rocky Mts., 1828, L., p. 187. ; Hutainia provima, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 25. Kutenia proxima, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 39. Tropidonotus saurita, var, provimus, 8. Garman, Mem. Mus. Comp. Zool., 1888, pp. 24, 137. Body slender. Head distinctly marked off by the more slender neck. Tail long, tapering. AIl the dorsal scales cari- nated. Frontal elongate, hexagonal, sides generally incurved. One anteorbital. Three postorbitals. Seven or eight suprala- bials; sixth and seventh largest. Ten infralabials; fifth and Reptiles and Amphibians of Illinois. 265 sixth largest. Dorsal rows of scales nineteen. Ventrals about 160-175. Subcaudals about 100-115. Anal entire. Color above from light brown to black, uniform or with short whitish lines between the stripes. All three stripes green or yellow, or the dorsal stripe yellow and the two lateral green. Lateral stripes on the third and fourth rows of scales of each side. Beneath green or whitish, uniform. Black or brown below the lateral stripes. Head brown above with two white or yellow spots at the inner margins of the parietals. Anteor- bital with a wide pale stripe next the eye. Generally with one or more of the postorbitals pale. Supralabials pale, all, or only the anterior, narrowly margined with black above. Total length of example of var. faireyi, 27.50; tail, 8.25. Throughout the State. Not common. Chicago (Nat. Mus.), Cook county (Kennicott), Peoria (Brendel), Normal, » Jersey county, Mt. Carmel (Ridgway), Union county. The three varieties occur in the State. Sauwrita is not represented by Laboratory collections, and is probably rare. It is included on the authority of Messrs. Davis and Rice and the National Museum list. Variety saurita. Color above light chocolate-brown. Stripes yellow. Tail more than a third of the total length. Ventrals about 157. Subcaudals 115-118. Variety faireyi. Color above black. Stripes greenish. Tail less than a third the total length. Ventrals about 174. Subcaudals about 105-115. Variety proxima. Color above black. Dorsal stripe brownish yellow. Lateral stripes whitish green or yellowish. Tail much less than a third of the total length. Ventrals about 170-180. Subcaudals 100-108. 266 Illinois State Laboratory of Natural History. Eutainia, radix, Bd. and Gir. Hutainia radix, Ba, and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 34. — Kenn., Trans. Ill. State Agr. Soc., 1853-54, L., p. 592. Kutenia radix, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1888, p. 39; Bull. Chicago Acad. Sci., 1883. Head rather small, wider than the neck. Tail moderately long, tapering. Dorsal scales all carinate. Frontal hexagonal or pentagonal. Two nasals. One large anteorbital. Three postorbitals. Seven supralabials; fifth and sixth largest. Nine or ten infralabials; fifth and sixth largest. Dorsal rows twenty- one; sometimes twenty or nineteen. Ventrals 150-160. Anal entire. Subcaudals about 65-75. Color above brown, with three longitudinal yellow stripes and six longitudinal series of black spots; the black color often predominating. Dorsal stripe on one and two half rows of scales, becoming decidedly orange towards the head. Lateral stripes on the third and fourth rows of each side. There are two series of the black spots on each side between the dorsal and lateral stripes, and a single row of spots below the lateral stripe. Beneath greenish, with two series of black spots, one on each side near the edges of the ventral scutes. Head plain brown above, with a pair of small yellow spots at the inner margins of the parietals. Iris brassy immediately about pupil, but extensively black before and behind. Posterior margin of all the supralabials marked with black. Infralabials and under side of the head yellowish. Length, 12; tail, 6. Occurs in all parts of the State, but is more common north. Cook county (Kennicott), Freeport, Milan, Colona, Galesburg, | Normal, Mt. Carmel (Ridgway ). Eutainia sirtalis, Linn. GARTER SNAKE. Var. sirtalis. Coluber sirtalis, Linn., Syst. Nat., ed. 10,1758, p. 222. Tropidonotus sirtalis, Wolbr., N. A. Herp., 1842, 1V., p. 41, pl. 11. Hutainia sirtalis, Ba, and Gir., Cat. N. A. Rept., Pt. I. 1853, p. 30.— Kenn., Trans. Iil. State Agr. Soc., 1853-54, I., p. 592. Tropidonotus sirtalis, sabsp. sirtalis, obscura, and dorsalis, Davis and Rice, Kull. Ill. State Lab. Nat. Hist., I, No. 5, 1883, pp. 39, 40; Bull. Chicago Acad. Sci., 1883. = Reptiles and Amphibians of Illinois. 267 Tropidonotus sirtalis, 8. Garman, Mem. Mus. Comp. Zodil.; 1883, pp. 24, 138, pl. 3, fig. 3. Var. parietalis. Coluber parietalis, Say, Long’s Exped. to Rocky Mts., 1828, I., p. 186. Hutainia parietalis, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 28. BKutenia sirtalis, subsp. parietalis, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, p. 40; Bull. Chicago Acad. Sci., 1883. Tropidonotus sirtalis, var. parietalis, 8S. Garman, Mem. Mus. ZOOl., pp. 25, 139. Body moderately slender. Head distinctly wider than neck. Tail slender, tapering. Dorsal scales all carinated. Frontal hexagonal. Two nasals. A single large anteorbital. Three postorbitals. Supralabials seven; fifth and sixth largest. Ten infralabials; fifth and sixth largest. Dorsal rows nine- teen. Ventrals about 140-170. Anal entire. Subcaudals about 60-80. Colors extremely variable. From light olive-brown to blackish brown above, with three longitudinal green or yellow stripes. Head olive-brown above, white below. Pupil with a narrow brassy ring about it. Iris blackish with some copper- color above and below. Tongue red, black-tipped. The dorsal stripe occupies one and two half rows of scales. The lateral stripes occupy the second and third rows of each side. The ground color may be nearly uniform, or with two series of black spots on each side. Black spots are generally present on the side, beneath the lateral stripes. Green beneath, with a series of black spots on the scutes at each side. Head brown above, with a pair of small yellow spots at the inner edges of the parietals. Supralabials greenish, uniform, or with black posterior margins. Total length, 40.25; tail, 8. Throughout the State. Abundant. Freeport, Oregon, Peoria, Normal, Bloomington, Champaign, Anna. Variety parietalis. In addition to the typical form of the species this variation is quite frequently met in the eastern part of the State, It is 268 Illinois State Laboratory of Natural History. marked along the lateral stripes, between head and tail, with obscure red spots; and the skin, when the dorsal scales are drawn apart, shows short whitish marks in about three series on each side, the two lower in pairs, and the upper composed - of single spots at the margin of the dorsal stripe. The species is extremely common everywhere, and with the other striped species is known as the garter snake. It is not so strictly terrestrial as is supposed, being most commonly found near water in the dry part of summer; and in spring, when just awakened from hibernation, it may occasionally be seen lying in the water as if trying to moisten the dried-out skin. It feeds on fishes and insects, and, when it can get them, gorges itself with tadpoles. Eutainia vagrans, Bd. and Gir. LarGr-HEADED STRIPED SNAKE. Eutainia vagrans, Bd. and Gir., Cat. N. A. Rept., Pt. 1. 1853, p 35. Hutenia vagrans, Baird., U.S. Pac. R. R. Expl., 1859, X., Reptiles p. 19, pl. 17.— Cooper, U.S. Pac. R. R. Expl., 1860, XII., Rep- tiles, p. 297. Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1888, p. 89; Bull. Chicago Acad. Sci., 1883. Tropidonotus sirtalis, var. vagrans, 8S. Garman, Mem. Mus. Comp. Zo6l., 1888, p. 139. Body long and slender. Head short and broad. Dorsal scales all carinated. Supralabials eight; sixth and seventh largest. Twenty or twenty-one rows of dorsal scales. Ven- trals 161-179. Anal entire. Subcaudals in 70-90 pairs. Color above light olive-brown, with two series of blackish brown spots on each side, the spots of the upper series encroach-_ ing on the dorsal stripe. Lateral stripes on the second and third rows of dorsal scales of each side. Beneath slate color. A single specimen of this species collected near Chicago by Mr. E. W. Nelson is the only one known to have been found in the State. NERODIA, Bp. anp Gir. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 38. Dorsal scales carinated, in from twenty-three to thirty- three rows. Rostral normal. ‘Two internasals. Two pre- frontals. Loreal present. Two nasals. One or two anteor- a Reptiles and Amphibians of Illinois. 269 bitals. Two or three postorbitals. Anal divided. Aquatic serpents of medium size, spotted with black or dark brown. Dorsal scales in 23-25 rows. No suborbital plates present. N. sIrpEpon. Dorsal scales in 29-33 rows. Suborbital plates present. N. cYcLoprum, Nerodia sipedon, Linn. Sporrmp WATER SNAKE. Var. sipedon. Coluber sipedon, Linn., Syst. Nat., ed. 10, 1758, I., p. 219. Tropidonotus sipedon, Holbr., N. A. Herp., 1842, TV., p. 29, pl. 6.— De Kay, Nat. Hist. N. Y., L, Zod). III., Rept. and Ampb., 1842, p. 42, pl. 14, fig. 31. Nerodia sipedon, Bd. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 386. —Kenn., Trans. lll. State Agr. Soc., 1853-54, I., p. 592. Tropidonotus sipedon, Dum.et Bibr., Erp. Gén., 1854, VIL, p. 568. Tropidonotus sipedon, subsp. sipedon, Davis and Rice, Bull. Tl. State Lab. Nat. Hist., I., No. 5, 1883, p. 42; Bull. Chicago Acad. Sci., 1883. Tropidonotus sipedon, S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 25, 140, pl. 2, fig. 3. Var. fasciatus. Coluber fasciatus, Linn., Syst. Nat., ed. 12, 1766, I., p. 378. Nerodia fasciata, Bd. and Gir., Cat. N. A. Rept., Pt. 1., 1853, p. 39. Tropidonotus fasciatus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 42; Bull. Chicago Acad. Sci, 1883. Var. erythrogaster. Coluber erythrogaster, Shaw, Gen. Zo6l., I11., 1804, p. 458. Nerodia erythrogaster, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 40. Tropidonotus sipedon, subsp. erythrogaster, Davis and Rice, Bull. Il). State Lab. Nat. Hist., I., No. 5, 1883, p. 42; Bull. Chicago Acad. Sci., 1883. Tropidonotus sipedon, var. erythrogaster, S. Garman, Mem, Mus. Comp. Zodél., 1883, pp. 26, 141. Var. rhombifer. Tropidonotus rhombifer, Hallowell, Proc. Acad. Nat. Sci. Phila., VL, 1852, p. 177. Nerodia rhombifer, Bd. and Gir., Cat. N. A. Rept., 1853, p. 147. Tropidonotus rhombifer, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., 1., No. 5, 1883, p. 48; Bull. Chicago Acad. Sci., 1883. Tropidonotus sipedon, var. rhombifer, 8. Garman, Mem. Mus. Comp. Zo6l., 1883, pp, 26, 141. 270 Illinois State Laboratory of Natural History. . Body moderately slender. Head distinctly marked off by the more slenderneck. ‘Tail cylindrical, tapering, of moderate length. Rostral wider than high, excavated below. Frontal much larger than wide, pentagonal. Parietals very large. A single nasal, with a groove below the nostril, sometimes appar- ently two plates with the nostril between. Loreal rhomboidal. A large vertically elongate anteorbital. Two or three postor- bitals. Supralabials eight, sixth and seventh largest. Ten in- fralabials, the fifth and sixth largest. From twenty-three to twenty-five rows of dorsal scales, the carinz on the outer scales a trifle less prominent. Ventrals one 130-150. Anal divided. Subcaudals in 40-80 pairs. Color extremely variable; from yellowish brown through various shades of brown and red to blackish brown, sometimes uniform, but generally with adorsal series of dark spots and on each side a series of smaller squarish spots which alternate with those of the dorsal series. Generally some of the spots of the three series, on the anterior part of the body and on the tail, fuse, forming transverse bands; sometimes all are thus fused. The number of the spots varies with age. Beneath yellowish, with subtriangular blackish or brown spots on the scutes, be- coming larger posteriorly and giving the prevailing color; _ sometimes uniformly reddish. Posterior margins of labial plates generally dark. Young, and some adults, with a pair of small pale spots on the parietals, as in the Kutzniz. This water snake is one of the commonest species within our limits. It feeds largely on small fishes. Throughout the State. Cook county, Ogle county, Gales- burg, Peoria (Brendel ), Pekin, Normal, Anna. Variety Sipedon. Grayish brown, with three series of squarish dark spots, those of the lateral series alternating with the dorsal spots. Beneath thickly blotched with black posteriorly, becoming paler towards the head. Dorsal rows twenty-three. Common every where. Reptiles and Amphibians of [llinois. 271 Variety fasciatus. Dark brown, with transverse lozenge-shaped spots on the back, and from thirty to thirty-eight red spots on each side. Reddish white beneath. Dorsal scales in from twenty-three to twenty-five rows. Anna, Union county. Variety erythrogaster. Uniform reddish brown or blackish above, bright reddish or yellow beneath. Dorsal rows from twenty-three to twenty- five. Peoria, southern Illinois, Anna (C. W. Butler). Variety rhombifer. Brown above, with a series of rhomboid dark spots on the back, which touch by their apices. More or less blotched with black beneath. Dorsal rows twenty-five (Hallowell gives this number in his original description; later writers have given twenty-seven as the proper number). Two specimens are in the collection of the Northwestern University at Evanston, one from Cook county, and the other from Union county. Nerodia cyclopium, Dum. et Bibr. Tropidonotus cyclopion, Dum. et Bibr., Erp. Gén. 1854, VIL., p.576. : Tropidonotus cyclopium, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 48.— S. Garman, Mem. Mus. Comp. Zo6l1., 1883, pp. 26, 142, pl. 2, fig. 4. Body moderately stout. Head swollen at the cheeks, nar- rowed forward. Tail tapering, rather short. All the dorsal scales carinate, those of the outer row less strongly, those of the back very strongly, becoming sharp longitudinal keels on the tail. Rostral about twice as broad as high. Nasal large, nostril near the upper margin, but not quite dividing it into two plates. Loreal large, widest below. One large anteorbital, widest above. Two postorbitals and from two to three subor- bitals. Supralabials greatly developed, eight in number; the sixth and seventh much the largest. Infralabials from ten to _ twelve; fifth and sixth largest. Dorsal rows from twenty- seven to thirty-three. Ventrals about 144. Anal divided. Subcaudals about 65 pairs, aie Illinois State Laboratory of Natural History. Color brown above, obscurely marked with black, this color being mostly confined to the bases of the scales and indi- cating vertical lateral bands and dorsal spots as in 7’. sipedon. Brownish beneath posteriorly, paler anteriorly; in an Illinois example yellowish below, with a small black spot on each side of most of the abdominal scutes, and with a few similar irreg- ularly placed spots on the under side of the tail. Total length, 41.25; tail, 9.50. Southern [linois. Bluff Lake, Union county. The only example of this species in the Laboratory collec- tion from Illinois differs in some respects from the typical forms of the species as described. On one side there are two subor- bitals, on the other but one; on neither side is the anteorbital in contact with the suborbitals; the latter crowd the labials away from the eye, leaving an unoccupied space above the fourth labial. The dorsal scales are in twenty-nine rows. The ventrals number one hundred and forty; the subcaudals, sixty. REGINA, Bp. aNnp Gtr. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 45. Dorsal scales carinated, in from nineteen to twenty-one rows. Rostral normal. Two internasals. Two prefrontals. A single nasal, grooved beneath the nostril. Loreal present. One or two anteorbitals. Two or three postorbitals. Anal plate divided. Dorsal scalesin 19 rows. Colors in longitudinal bands. With two approximated blackish bands on the abdomen. R. LEBERIS. Dorsal scales in 20 rows. Colors in longitudinal bands. No longitudinal bands on ventral surface....... R. GRAHAMI. Dorsal scales in 19 rows. Brown above, spotted with black. Red below, with a series of round black spots on each SUMS ie AE sts INC LtC ED terre hana OR fa, te R. KIRTLANDI. Regina leberis, Linn. Coluber leberis, Linn., Syst. Nat., ed. 10, 1758, L., p. 216. Tropidonotus leberis, Holbr., N. A. Herp., 1842, 1V., p. 49, pl. 13. —De Kay, Nat. Hist. N. Y., L., Zool. IIL, Rept. and Amph., 1842, p. 45., pl. 11, fig. 23. vo Reptiles and Amphibians of Illinois. 73 Regina leberis, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1858, p. 45.— Kenn., Trans. Ill. State Agr. Soc., 1853-54, I., p. 592. Tropidonotus leberis, Dum. et Bibr., Erp. Gén., 1854, VIL, p. 579. — Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I, No. 5, 1883, p. 41; Bull. Chicago Acad. Sci., 1883.—S. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 27, 142, pl. 2, fig. 1. Body moderately slender. Head small. Tail rather short. Dorsal scales all carinate, the outer very faintly, in nineteen rows. Rostral wide and low, excavated beneath. One (!) nasal, grooved below the nostril, sometimes also above. Two anteor- bitals. Two postorbitals. Supralabials seven or eight; fifth and sixth largest. Infralabials nine or ten; fourth and fifth largest. Dorsal rows nineteen; scales of outer row widest. Ventrals 140-149. Anal divided. Subcaudals 64-81. Tail about three tenths the length of the body. Color above brown, with a blackish line occupying the median row of dorsal scales, and on each side similar lines occupying the fifth row. On the sides a straw-colored band occupies the upper half of the outer row and the whole of the second dorsal rows. Lower half of outer dorsal row and outer margins of the abdominal scutes occupied by a brown band. Beneath yellowish, with two longitudinal bands of brown. Labials and lower part of rostral yellowish. A small brown spot beneath the angle of the mouth. Throughout the State. Cook county, Geneva, Galesburg. Similar to R. grahami in the number of dorsal scales and number and form of the head plates, but differing in color, the average number of ventral and subcaudal scutes, and the pro- portional length of the tail. Ventrals, 147. Subcaudals, 72. Total length, 12.50; tail, 3. Ventrals, 149. Subcaudals, 79. Total length, 8.50; tail, 2.62. Regina grahami, Bd. and Gir. Regina grahamii, Bd. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 47.—Kenn., Trans. Ill. State Agr. Soe., 1853-54, I., p. 592. Tropidonotus grahami, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1888, p. 41; Bull. Chicago Acad. Sci., 1883. Tropidonotus leberis, var. grahamii, 5. Garman, Mem. Mus, Comp. Zo6l., 1883, pp. 28, 142. vw a Te Illinois State Laboratory of Natural History. Body moderately slender, tapering towards the extremities. Head small, not much wider than the neck. Tail rather short. All the dorsal scales carinate, Rostral low and broad, dis- tinctly excavated below. Parietals very large. frontal elongate, pentagonal. A single (!) nasal plate on each side, obliquely grooved below the nostril. Two anteorbitals. Two postorbitals. Seven or eight supralabials; the fifth and sixth largest. Ten infralabials; fourth and fifth largest. Dorsal rows nineteen; the scales of the outer row of each side less strongly carinate than the others, and about as wide as long. Ventrals 156-173. Subcaudals 54-65 pairs. Anal divided. Tail about two tenths the length of the body. Color above brown, with a pale brown dorsal stripe about three scales wide; on each side of this stripe a wide brown or gray band edged with blackish, and about five scales wide; and outside these on each side a straw-colored band occupying the three outer rows of scales. Hdges of the outer dorsal rows and sides of the abdominal scutes black, producing on each side of the abdomen a zigzag line. beneath straw-color, uniform, or with a median dusky band beneath the tail, and be- fore the vent a series of blackish spots. Total length, 31.75; tail, 5.50. Throughout the State. Cook county (Kennicott), Normal, Pekin, Champaign. In the original description of this species the number of dorsal rows of scales is given as twenty. Illinois examples have nineteen without exception, as far as I know. Besides the differences of color, this species differs from FR. leberis in the number of ventral and subcaudal scutes, and in the length of the tail as compared with that of the body. Ventrals, 173. Subcaudals, 65. Total length, 27.25; tail, 4.75. Ventrals, 158. Subcaudals, 54. Total length, 31.75; tail, Ventrals, 156. Subcaudals, 58. Total length, 26.75; tail, Ventrals, 160. Subcaudals, 61. Total length, 14; tail, 2.50. Reptiles and Amphibians of Illinois. 275 Regina kirtlandi*, Kenn. Regina kirtlandii, Kenn., Proc. Acad. Nat. Sci. Phila., 1856, p. 95. Tropidoclonium kirtlandi, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 41; Bull. Chicago Acad. Sci., 1883. Tropidonotus kirtlandii, 8S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 28, 143, pl. 1, fig. 3. Body tapering towards the extremities. Head small, scarcely wider than the neck. ‘Tail short, tapering, in adults abruptly more slender than the body. Dorsal rows of scales nineteen, all carinated. Rostral low and wide. Frontal hexag- onal. Supraciliaries small. One nasal, grooved below the eye. One anteorbital. Hye small. Two postorbitals. Six suprala- bials, fifth and sixth largest. Seven infralabials, fifth largest. Dorsal rows of scales nineteen. Ventrals 131-133. Anal divided. Subcaudals in 52-56 pairs. Color above brown, with two dorsal series of black spots, and on each side a series of’ larger round black spots, some- times with a series of small spots beneath the last. Flanks gray. Ventral surface, between two submarginal series of round black spots, bright red, almost carmine beneath the tail, gradually fading to a dull yellowish white on throat and under side of head. Labials yellowish. Young are almost uniform brown above, and frequently are speckled with black between the round spots of the ventral scutes. Total length of an adult, 17; tail, 3.25. Formerly common in the north half of the State; rare at present. West Northfield (Kennicott), Normal, Champaign. A handsome snake, which ten years ago was not un- | common along prairie brooks, in the central part of the State. Tiling, ditching, and cultivation of the soil have destroyed its haunts and nearly exterminated it. Mr. Kennicott found it in northern Illinois under logs. I have never seen it else- where than on the open prairie. It has a peculiar habit of | flattening its body and remaining motionless to escape de- tection. : | : | | ae SS * Prot, E. D. Cope has recently established the genus Clonophis for this species. 276 Illinois State Laboratory of Natural History. TROPIDOCLONIUM, Cope. Cope, Proc. Acad. Nat. Sci. Phila., 1860, p. 76. Microps (preoccupied in Coleoptera), Hallowell, Prec. Acad. . Nat. Sci. Phila., VIII., 1856, p. 240. Dorsal scales carinated. Rostral plate normal. Two in- ternasals. Two prefrontals. One nasal, grooved below the nostril. Loreal present. One anteorbital. Two postorbitals. Head small, not distinct. Teeth small, isodont. Anal not divided. ‘Tail short. The genus is here restricted to the species for which it was originally proposed. Tropidoclonium lineatum, Hallowell. Microps lineatus, Hallowell, Proc. Acad. Nat. Sci. Phila., VIIL., 1856, p. 241. T'vopidoclonion lineatum, Cope, Proc. Acad. Nat. Sci. Phila., 1860, p. 76. Storeria lineata, S. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 32, 143. Head small, not distinct. Tail short, tapering abruptly. Dorsal scales in nineteen rows; the two outer rows on each side larger than the others, smooth and shining; first row without carine, second row with a faint carina at the base of each scale; third row with the outer halves of scales polished but with distinct carine. Frontal plate longer than wide, the sides parallel. One anteorbital. Two postorbitals. Hye small, above the third labial. Supralabials six or seven, third and fourth largest, fifth crowded away from the margin. Ventrals 150. Subcaudals 26. Color above brown, with a yellow-gray median stripe one and two half scales wide extending from the occiput to the tip of the tail, and with three outer rows of dorsal scales of the same color on each side. A distinct black spot at the base of each scale of the outer row. Head above olive-brown; supra- labials yellow-gray. Ash-gray beneath, becoming yellowish on the head and tail. Each ventral plate with a transverse black spot on the middle of its base. The spots behind the first ten each with a median posterior notch, the notches becoming gradually deeper posteriorly and for a short distance before Reptiles and Amphibians of Illinois. 277 the vent dividing the spots into two. Subcaudals each with a basal black spot. Total length, 15.12; tail 1.37. Described from a single example* from Urbana, IIl., col- lected April 4, 1889, the only representative of the species which has thus far been found within our limits. The species is said to occur from Kansas to Texas, and is not included in any of the accounts of species of this region. In Dr. Yarrow’s catalogue of North American reptiles in the National Museum, I find record of an example taken at Hughes, Ohio, April, 1879, a record which seems to have escaped the attention of recent writers. The Illinois example differs from Hallowell’s descrip- tion of the type in several respects, and does not agree exactly with other descriptions with which it has been compared. Thus the abdominal plates are said to vary from 138 to 145, the subcaudals from 32 to 35 pairs, while the eye is said to rest on the third and fourth supralabials. Im none of these char- acters does our example agree exactly, as may be seen by the above description. The colors also of the Illinois specimen seem to be darker than usual. STORERIA, Bp. aAnp Gir. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 135. Dum. et Bibr., Ischnognathus, Erp. Gén., VIL., 1854, p. 506. Dorsal scales carinated, in fifteen to seventeen rows. Anal plate divided. Rostral normal. Two internasals. Two prefrontals. Two nasals, or one with a groove beneath the nostril. One or two anteorbitals. One or two postorbitals. Ovoviparous. Small, obscurely-colored species. The nostril is commonly said to open between two nasal plates in species of this genus. This is not always so, occa- sional specimens showing a single plate on one side of the head with a groove beneath the nostril, while there are two plates on the opposite side, or the plates of both sides may be united. In a perfect example of S. occipitomaculata in the eM collection Enere is but one large ppsvoxbital plate. * Other eerie of the species fon the same peal were examined after this was written. See bull. Ill. State Lab. Nat. Hist., TII., p. 187. 278 Illinois State Laboratory of Natural History. Dorsal scales in 15 rows........... .. .S. OCOIPITOMAGULATA. Dorsal scalesin 17) rows... oo sie wee. OL S. DEKAYI. Storeria occipitomaculata, Storer. T'ropidonotus occipito-maculatus, Storer, Rep. Rept. Mass., 18389, . 280. Be occipito-maculatus, Storer, Bost. Jour. Nat. Hist., 1840, IIL, p. 33. Coluber venustus, Hallowell, Proc. Acad. Nat. Sci. Phila., 1846-47, IIL, p.278. Storeria occipito-maculata, Bd. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 1387.— Kenn., Trans. Ill. State Agr. Soc., 1853-54, L., p. 592. Storeria occipitomaculata, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1888, p. 40; Bull. Chicago Acad. Sci., 1883.— 8. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 30, 143, pl. 1, fig. 2. Small. Body tapering to the extremities. Head small. Tail short. All the dorsal scales carmated. MRostral plate ex- cavated below; its anterior face convex. Frontal hexagonal, sides converging posteriorly. Two anteorbitals. Two postor- bitals. Six or seven supralabials. Seven infralabials; the fourth and fifth largest. Dorsal rows fifteen. Ventrals 117- 128. Anal divided. Subcaudals 43-52. Olive or chestnut-brown above, uniform, or with a dorsal ash-gray stripe, and a similar stripe on the outer rows of dorsal scales, the latter more obscure than the dorsal stripe, or want- ing altogether. Beneath salmon-red, fading anteriorly into light gray. External margins of the ventral scutes gray; the ante- rior scutes with distinct blackish submarginal spots, forming a longitudinal series for each side. Head above reddish brown, faintly iridescent, with three occipital pale spots, the median much the largest. Fifth supralabial pale. Total length of an adult female, 11.31; tail, 2.44. Occurs everywhere within oar limits. Not common. Cook county (Kennicott), Peoria (Brendel), Normal, Belleville (Nat. Mus.), Anna. Storeria dekayi, Holbr. Tropidonotus dekayi, Holbr., N. A. Herp., 1842, IV., p. 53, pl. 14.— De Kay, Nat. Hist., N. Y., I., Zo6l. IIL., Rept. and Amph., 1842, p. 46, pl. 14, fig. 30. Reptiles and Amphibians of Illinois. 279 Storeria dekayi, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1858, p. 135.—Kenn., Trans. Ill. State Agr. Soc., 1853-54, p. 592. | Ischnognathus dekayi, Dum et Bibr., Erp. Gén., VIT., 1854, p. 507. Storeria dekayi, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 40;-Bull. Chicago Acad. Sci., 1883.—S, Gar- man, Mem. Mus. Comp. Zod6l., 1888, pp. 31, 1438, pl. 1, fig. 1. , Small. Body tapering to both extremities. Head small, | but clearly marked off by the slender neck. * Tail short. Ros- | tral excavated below, its anterior face convex. Frontal hexag- onal, wide. Two nasals. One large anteorbital. Two post- ; orbitals, sometimes one. Seven small infralabials, the fourth } and fifth much the largest. Seventeen dorsal rows of scales, the outer row of each side widest. Ventrals about 120-128. Anal divided. Subcaudals about 48-60. From ash-gray to chestnut-brown above, with a pale dorsal stripe, on each side of which is a series of brown spots; the latter may encroach upon the median stripe, and occasionally unite across the middle line; sometimes they are wanting. Beneath pale gray, with one or two small black specks near the outer margins of each ventral scute. Head brown above, with a faint iridescence. On each side of the neck, at the base of the head, is an obliquely-placed black or brown bar, the two occasionally meeting above. Smaller black bars across the tem- porals and superior labials of each side extend to or slightly be- yond the angle of the mouth. Posterior margins of the third and fourth supralabials black. Infralabials pale, or touched with black at the margins. Total length, 12.75; tail, 2.50. Occurs in all parts of the State, but is not very common. Englewood, Chicago, Piano, Peoria (Brendel), Kappa, Normal, Belleville and Mt. Carmel (Nat. Mus. ). HYDROPS, W AGLER. Wagler, Syst. Amph., 1830, p. 170. S$. Garman, Mem. Mus. Comp. Zo6l., 1883, p. 34. Scales smooth and shining, in from fifteen to twenty-one rows. Anal plate divided. Rostral normal. One or two inter- nasals. ‘T'wo prefrontals. One or two nasals. A large elongate loreal, with the prefrontal forming the anterior rim of the orbit. 3) 280 Illinois State Laboratory of Natural History. No anteorbitals. Two postorbitals. Body moderately stout. Head scarcely distinct from the body. Two internasal plates. With several longitudinal red stripes BDOMET ley Wear erect ade ae ec ete H. ERYTHROGRAMMUS. One internasal plate. Uniform blue black above. H. ABACURUS. Hydrops erythrogrammus, Dandin. Rerp-LineD HorNED SNAKE, Hoop SNAKE, Coluber erythrogrammus, Daudin, Hist. Nat. Rept., 1799, VII., p. 93, pl. 83, fig. 2. Helicops erythrogrammus, Holbr., N. A. Herp., 1842, III., p. 107, pl. 25, Abastor erythrogrammus, Ba. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 125. Calopismea erythrogrammus, Dum. et Bibr., Erp. Gén., 1854, VIL., p. 336. Abaustor erythrogrammus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 32; Bull. Chicago Acad. Sci., 1883. Hydrops erythrogrammus, 5. Garman, Mem. Mus. Comp. Zoil., 1883, pp. 35, 144. Body moderately stout. Head scarcely wider than the neck, slightly depressed. Tail short. Dorsal scales smooth. Rostral plate very wide. ‘Two small internasals. Prefrontals large, forming part of the anterior rim of the orbit. Frontal plate hexagonal, its lateral margins nearly parallel, except between the parietals. Supraciliaries large. One nasal plate, grooved below the nostril. Loreal elongate, forming part of the anterior rim of the orbit. No anteorbital. Two postorbitals, the lower small. Supralabials seven, sixth largest. Infrala- bials seven or eight, the fourth or fifth largest. Dorsal scales in nineteen rows, all smooth and polished. Ventrals 167-185. Subcaudals in 38-50 pairs. Color above bluish black, with five longitudinal red stripes. Of these, one on each side occupies the two outer rows of scales, excepting the bases of the scales of the inner row; three scales above these stripes, on each side, is another, occupying but one scale in width; while the fifth stripe occupies the median dorsal row of scales. Beneath carneous, with round black fi 350420" oo Reptiles and Amphibians of [llinois. 281 spots near the outer margins of each ventral scute, forming two longitudinal series. Sometimes with a broken median - series of spots. Cephalic plates faintly margined with yellow. Labials and scales of the under side of the head, each with a black central spot. Attains a length of more than 36 inches. Southern [llinois. ‘t Found north to Mt. Carmel at least.” (Ridgway. ) Hydrops abacurus, Holbr. Rep-BELLiep HoRN SNAKE. Coluber abacurus, Holbr., N. A. Herp., 1836, I., p. 119, pl. 23. Helicops abacurus, Holbr., N. A. Herp., 1842, III., p. 111, pl. 26. Farancia abacurus, Ba. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 128. Calopisma abacurum, Dum. et Bibr., Erp. Gén., VIL., 1854, p. 342. Hydrops abacurus, Dum, et Bibr., Erp. Gén., Atlas, pl. 65. Farancia abacura, Davis and Rice, Bull. Ill. State Lab. Nat, Hist., I., No. 5, 1883, p. 32; Bull. Chicago Acad. Sci., 1883. Hydrops abacurus, 8.Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 36, 144, pl. 1, fig. 5. Body tapering very slightly toward the extremities. Neck thick, as wide as the head. Head small. Tail of mod- erate length, maintaining its diameter well toward the tip and tapering suddenly, the tip covered by a conical nail. All the scales smooth and shining. Rostral plate wide. But one in- ternasal. Two large prefrontals, each forming a part of the boundary of the orbit of its side. Frontal large, elongate. Supraciliaries small. One nasal, grooved below the nostril. A single elongate loreal which forms part of the anterior boun- dary of the orbit (some authors consider this an anteorbital and describe the species as without a loreal). Noanteorbitals. Two postorbitals, the lower much the smaller. Parietals large, bounded exteriorly by two elongate temporals. Six or seven supralabials, the eye above the third and fourth, fifth and sixth largest. Infralabials eight or nine, the fifth largest, those fol- lowing it becoming rapidly smaller, the last smallest of all. Dorsal scales in nineteen rows, large, the outer scales wider than long. Ventrals 168-203, the one preceding the anals divided. Subeandals in 35-49 pairs, a few of those behind the vent sometimes united. 282 Illinois State Laboratory of Natural History. Color above uniform bluish black. Beneath bright brick- red, with broken or complete transverse bluish black bands which are continuous at the sides with downward extensions of the black of the dorsal surface. The red of the ventral sur- - face extends upward on the sides between the black bars to the third or fourth row of dorsal scales. Head olive-brown above, uniform or marked with red. Posterior supralabials reddish brown with black centra! spots. Inferior surface of the head brownish anteriorly, becoming pale salmon-red be- hind, many of the plates with black central spots. The trans- verse black bars alternate on the posterior part of the tail, and are wanting toward the tip. Total length of an example from Union Co., 38.50; tail, 6.25. Southern Illinois. Frequent. Wabash Valley ( Ridgway ), Bluff Lake, Union Co. This is a beautiful serpent with the scales of the dorsal surface Jike polished ebony. ‘“ Not uncommon as far north as Vincennes. A living female with eggs was sent to the Na- tional Museum from Wheatland, Ind.” (Ridgway). ‘ Com- mon around the Bluff Lakes | Union Co. | during August and September.” (C. W. Butler. ) CYCLOPHIS, GUNTHER. Giinther, Cat. Coll. Serp. in brit. Mus., Pt. I., 1858, p. 119. Bd. and Gir., Chlorosoma, Cat N. A. Rept., Pt. I., 1853, p. 108. Dorsal scales perfectly smooth, in fifteen rows. Anal plate divided. Rostral normal. Two internasals. Two pre- frontals. One nasal, nostril opening in its middle. Loreal present. One anteorbital. Two postorbitals. Small, slender; head distinct from body; tail moderately long. Cyclophis vernalis, Harlan. GREEN SNAKE. Coluber vernalis, Harlan, Jour, Acad. Nat. Sci. Phila., V., 1827, p. 361.— Holbr., N. A. Herp., 1842, ILI., p. 79, pl. 17.—De Kay, Nat. Hist. N. Y., I., Zoél. IIL, Rept. and Amph., 1842, p. 40, pl. 11, fig. 22. Chlorosoma vernalis, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, y. 108.— Kenn., Trans. Ill. State Agr. Soc., 1853-54, 1., p. 592. cae ta icant anil ee ee . . : Reptiles and Amphibians of Illinois. 283 Liopeltis vernalis, Smith, Geo]. Sury. Ohio, Zo6l. and Bot., 1V., 1882, p. 695. Cyclophis vernalis, Davis and Rice, Bull. Il]. State Lab. Nat. Hist., I., No. 5, 1883, p. 36; Bull. Chicago Acad. Sci., 1883.— S. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 39, 146, pl. 3, fig. 4. Small. Body slender. All the dorsal scales smooth. Ros- tral plate angulate between the internasals. Frontal elongate, narrowed behind, pentagonal. One or two anteorbitals. Two postorbitals. Seven supralabials; middle of the eye above the third and fourth. Hight infralabials, the fifth largest. Dorsal scales in fifteen rows. Ventrals about 148 in adults (125 or more in younger examples). Subcaudals about 80 (69-95). Color above uniform pale green; whitish below. Head olive above. Iris pale yellow about pupil, more extensively so above; elsewhere dark. Supralabials pale. Young examples are more brownish. Total length of an adult female, 10.25; tail, 5.25. Occurs in all parts of [llinois. Common. Cook county, Galesburg, Peoria (Brendel), Normal, Monroe county (Nat. Mus. ) A handsome small species occurring everywhere in mead- ows and pastures. It feeds upon insects. A female before me which was captured at Normal, July 6, contains fully developed eggs. PHYLLOPHILOPHIS, 8. GARMAN. S. Garman, Mem, Mus. Comp. Zo6l., 1883, p, 40. Dorsal scales carinated, in seventeen rows. Anal plate divided. Rostral normal. Two internasals. Two prefrontals. One nasal plate, with the nostril opening in its middle. Loreal present. One anteorbital. Two postorbitals. Small, slender; head distinct; tail long. Phyllophilophis estivus, Linn. GREEN SNAKE. Coluber estivus, Linn., Syst. Nat., ed. 12, 1766, I., p. 387. Leptophis wstivus, Holbr., N. A. Herp., 1842, 1V., p. 17, pl. 3.— Bd. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 106. Leptophis majalis, Bd, and Gir., |. ¢., p. 107. 284 Illinois State Laboratory of Natural History. Herpetodryas wstivus, Dam. et Bibr., Erp. Gén., VIT., 1854, p. 209, Cyclophis wstivus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1888, p. 36; Bull. Chicago Acad., 1883.—S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 40, 146, pl. 3, fig. 1. Phyllophilophis astivus, S. Garman, List N. A. Rept. and Batr. Essex Inst., 1884. Small. Body long and slender. Head long, wide behind, narrowing forward. Neck slender. Tail long, slender and tapering. Dorsal scales, excepting the two outer rows of each side, distinctly carinated. Rostral plate large, convex, with a lunate impression below, obtusely angulate between the inter- nasals. Frontal plate elongate, pentagonal, narrowed behind. Loreal quadrangular. One anteorbital (three on each side in an example from southern I[1l.). Two postorbitals. Seven or eight supralabials; center of the eye behind the line of junction of the third and fourth, sixth largest. Eight infralabials, fourth and fifth largest. Ventrals 150-165. Subeaudals 111-135. Color above pale green. Supralabials and entire under surface greenish white. Total length, 27.25; tail, 9.75. Southern Illinois, common. Mt. Carmel (Ridgway), Anna (Butler), Pine Hills, Union county. Kasily distinguished from Cyclophis vernalis. From the strong resemblance of this small serpent to some of the tree-in- habiting species of the tropics one would infer that its habits were similar, but instead, as observed by Prof. Cope in an example kept by him in confinement, it remains under-ground most of the time with the head and neck exposed and motion- less, a habit which may serve it in eluding its enemies or bring- ing the insects on which it feeds within its reach. Those we have collected were found among herbage, in situations similar to those in which Cyclophis vernalis occurs. COLUBER, LINN. Linn., Syst. Nat., 1748, p. 34. Bd. and Gir., Bascanion, Cat. N. A. Rept., Pt. I., 1853, p. 93. S. Garman, (in part) Mem. Mus. Comp. Zo6l., 1883, p. 40. Dorsal scales smooth, in seventeen rows. Anal plate divided. Rostral normal. Two internasals. Two prefrontals. Reptiles and Amphibians of Illinois. 285 Two nasals. Loreal present. One large superior and a very small inferior anteorbital. Two postorbitals. Kye large. Body long, slender; head distinet; tail iong. Large active species. Coluber constrictor, Linn. Brack Snake, Bruz Racer. Coluber constrictor, Linn., Syst. Nat., 1758, ed. 10, L., p. 216. Storer Bost. Jour. Nat. Hist,, 1840, I1I., p. 27.—Holbr. N. A. Herp. 1842, III., p. 55, pl. 11— De Kay, Nat. Hist. N. Y., 1, Zool. IIl., Rept.and Amph., 1842, p. 35, pl. 10, fig. 20. Bascanion constrictor, Ba. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 93.— Kenn., Trans. Ill. State Agr. Soe., 1858-54, I., p. 592. Coryphodon constrictor, Dam, et Bibr., Erp. Gén., VIL, 1854, p. 183. Bascanium constrictor, Davis and Rice, bull. Ill. State Lab. Nat. Hist., L, No. 5, 1883, p. 38; Bull. Chicago Acad. Sci., 1883. Coluber constrictor, S. Garman, Mem. Mus. Comp. Zod6l., 1883, pp. 41, 146, pl. 4, fig. 3. Large. Body long and slender. Head elongate, clearly marked off from the body, front convex, sides channeled. Eye large. Tail long and tapering. Rostral plate strongly convex, angulate between the internasals. Frontal large, elongate, its lateral margins incurved. Supraciliaries jutting over the eyes. Nostril large. Two nasals of about equal size. One or two loreals. Two anteorbitals, sometimes but one, the superior very large, vertically elongate and expanded above; inferior plate small. Two postorbitals. Seven supralabials, the fourth, sixth and seventh largest. Nine infralabials, the fifth much the largest, the eighth and ninth very small. Dorsal scales in seventeen rows; large, all perfectly smooth. Ventrals, 172-190. Anal divided. Subcaudals in 89-110 pairs. Color above uniform deep blue-black or olive-brown, slate- gray or greenish white beneath. Inferior portions of all the supralabials pale. Head olive-brown above. Pupil with a nar- row coppery ring. Iris nearly all black. The colors of the young are entirely different. In specimens of a foot long there is a dorsal series of dark brown blotches, and below these on each side numerous small brown spots. Beneath gray, with numerous round or lunate black spots toward the sides. Head olive-brown above, the plates edged and marked with black. Tail uniform brown above, paler below. 286 Illinois State Laboratory of Natural History. Total length of an example from southern Illinois, 45.50; tail, 11.50. Throughout the State. Common south. Cook Co. (Ken- nicott), Galesburg, Peoria (Brendel), Normal, Urbana, Cob-_ den, Anna. Formerly a common species, but it has been exterminated in the better agricultural regions, and is not common at present except in localities where there are extended tracts of unculti- vated land to afford it retreats. The pilot snakes and this species are not commonly discriminated, and accounts of the habits of the black snake as frequently refer to one as to the other. This is one of the largest species of our fauna, reach- ing alength of seven feet or more. It is perfectly harmless, but will occasionally pursue one whom it recognizes as more cow- ardly than itself. It is a great coward, however, and ordinarily takes to flight at the first sound of one’s approach. It is an invet- erate robber of birds’ nests, climbing trees for this purpose with great facility. Besides young birds, its food consists of frogs and field mice. The form known as the Blue Racer seems to to be the more common in central Illinois. PITYOPHIS, Honpr. Holbr., N. A. Herp., 1842, IV., p. 7. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 64. Median rows of dorsal scales slightly carinated, outer rows smooth, in from twenty-five to thirty-five rows. Anal plate entire. Rostral plate produced upward and backward be- tween the internasals. Two internasals. Two pairs of pre- frontals or one pair; sometimes with a small intermediate extra . plate — the anterior frontal. Twonasals. Loreal present. One or two anteorbitals. Two to five postorbitals. Includes large, spotted species. Pityophis catenifer, Blainville. Bunn SNAKr. Var. catenifer. Coluber catenifer, Blainville, Nouv. Ann. Mus. Hist. Nat., IIL, 1834, pl. 26, fig. 2, 2a, 2b. Pituophis catenifer, Bd. and Gir., Cat. N. A. Rept., Pt. L, 1853, p. 69, ; ; Reptiles and Amphibians of Lllinois. 287 Var. sayi. Coluber sayi, Schlegel, Essai Phys. Serp., 1837, p. 157. — Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 151. Pityophis sayi, subsp. sayi, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 38. Pityophis catenifer, var. sayi, 8. Garman, Mem. Mus. Comp. Zool., 1883, pp. 52, 150. Var. bellona. Churchillia bellona, Bd. and Gir., Stansbury’s Explor. and Sury, Great Salt Lake, 1853, p. 350. Pituophis bellona, Ba. and Gir. Cat. N. A. Rept., Pt. L, 1853, p. 66. Pityophis catenifer, var. bellona, 8. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 53, 151. Large. Head large, wide behind, snout somewhat pointed. Outer dorsal scales smooth, the median rows carinate. Rostral plate wedged between the internasals, sometimes reaching the prefrontals. Prefrontals in a transverse series of one or two pairs. Sometimes with a small extra plate in advance of the frontal. Frontal large, its lateral margins parallel or conver- gent posteriorly. Parietals large, with a linear impression, as if mutilated. One or two loreals, one or two anteorbitals; if two, the inferior is much the smaller. From two to four post- orbitals. Supralabials eight, the fourth or fifth reaching the orbit, seventh largest. Kleven to thirteen infralabials, gradu- ally increasing in size to the seventh, thence diminishing. Rows of dorsal scales from twenty-five to thirty-five. Ventrals 209-243. Subcaudals 52-71. Color above from yellowish white to reddish brown, with a dorsal series of large black or brown spots, and with two or three series of smaller spots on each side. Beneath yellow, more or less blotched with black. A black bar, arched for- wards, generally extends from orbit to orbit across the head. Another black bar extends from the supraciliary plate to the angle of the mouth, crossing the seventh and eighth upper labials. Labials more or less widely edged with black. Total length, 61.75; tail 8. Prairies in all parts of the State. Rockland (Nat. Mus.), Normal, southern Illinois (Nat. Mus.). 288 Illinois State Laboratory of Natural History. Variety sayi (?) Iilinois examples of the species are referred to this variety with a good deal of doubt. If the published descriptions of the variety are complete, our snakes certainly do not belong to © it. In many respects the central Illinois examples are inter- mediate between var. sayi and var. bellona, and, judging from descriptions alone, are as properly referable to the latter as to the former. The description following is based upon six examples from the prairie region of central Illinois. Rostral plate wedged between the internasals above, in one example reaching the prefrontals. Two pairs of prefrontals. A small anterior frontal present in four examples. Frontal large, wide in front, emarginate for the accommodation of the anterior frontal when the latter is present, sides slightly in- curved and approaching posteriorly. Parietals large, impressed as if from an injury. Loreals one ortwo. Anteorbitals one in five examples, two in the remaining one, the inferior plate in the latter very small. Postorbitals two, three, or four; in one example three on one side and four onthe other. Supralabials eight, the fourth alone reaching the orbit; fourth, sixth, and seventh largest. Eleven infralabials. Dorsal scales in from thirty-one to thirty-three rows, from seven to nine outer smooth. Ventrals 209-228. Subcaudals 51-60 pairs. Color above straw-yellow, faintly brownish in some examples, with a dorsal series of large black or brown spots numbering from forty-two to fifty-five to the vent, and from nine to thirteen on the tail. On the dorsal scales of each side, are one or two additional series of black or brown spots which, anteriorly, are elongate longitudinally, and on the tail fuse with . the dorsal spots, forming transverse bars. Beneath pale yellow, with brown or black blotches confined to the sides of the ven- tral scutes or uniformly distributed. Head with a black bar extending from orbit to orbit on the supraciliaries, frontal and prefrontals. An oblique black bar extends from the orbit to the angle of the mouth, crossing the seventh and eighth supralabials. Most of the labials are edged with black. The black spots, in some examples, encroach upon the yellow ground color to such an extent that only narrow lines of yellow appear between them. Reptiles and Amphibians of Illinois. 289 In an attempt to find where the [linois examples of the species belonged, the published descriptions of American species of the genus have been tabulated, and those characters of each in which any one of the six examples described agreed were checked. It was found that most of them agreed most closely with var. bellona. The descriptions of var. sayi are, however, not cumplete, and the result is consequently unsatisfactory. The bull snake is not an uncommon species in Illinois, occasionally even occurring in door yards. When offended it will strike, as do most other harmless snakes, and utter a hiss- ing sound accompanied by a humming noise bearing a very remote resemblance to the bellow of a bull, hence the com- mon name. While holding one of these snakes over a table a short time since, the rapid vibration of the tail on the smooth surface of the table gave forth a hissing sound bearing resemblance to the noise made by the rattle of members of the’ genus Crotalus. The resemblance would doubtless be increased where the tail struck against grasses and leaves, and may serve these snakes as a protection against enemies. The humming noise which accompanies the hissing is due to a vibration of a peculiar flattened and freely movable epiglottis. ELAPHIS, ALDROVANDI. Aldrovandi, Serpentum et Draconum, 1640, p. 267. Bd. and Gir., Scotophis. Cat. N. A. Rept., Pt. L, 1853, p. 73. S. Garman, Mem. Mus. Comp. Zod6l., 1883, p. 53. A few median dorsal rows with faintly carinated scales; dorsal rows twenty-three to twenty-nine. Anal plate divided. Rostral normal. Two internasals. Two prefrontals. Two nasals. Loreal present. Anteorbitals one. Postorbitals two or three. Body long, slender; head distinct; tail long. In- cludes the largest and most active of our Ophidia. General color black, uniform, or with obscure blotches. K. OBSOLETUS. General color brown, with chestnut blotches..... EK. GurTaTus 290 Illinois State Laboratory of Natural History. Elaphis obsoletus, Say. Pinor Snake, BLAcK SNAKE. Var. obsoletus. Coluber obsoletus, Say, Long’s Exped. to Rocky Mts., 1823, I., p. 140. , : Georgia obsoleta, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 158. Scotophis obsoletus, Kenn., Proc. Acad. Nat. Sei. Phila., 1860, p. 380. Coluber obsoletus, subsp. obsoletus and confinis, Davis and Rice, Bull. Dl. State Lab. Nat. Hist., L., No. 5, 1883, pp. 36, 37; Bull. Chicago Acad. Sci., 1883. _ Blaphis obsoletus, S. Garman, Mem. Mus. Comp. Zo6l., 18838, pp. 54, 151, pl. 4, fig. 2. Var. lindheimeri. Scotophis lindheimerii, Bd. and Gir. Cat. N. A. Rept. Pt. L., 1853, p. 74. Scotophis emory?, Bd. and Gir., 1. ¢., p. 157. Coluber emoryt and C. lindheimeri, Davis and Rice, Bull. State Lab. Nat. Hist., I., No.5, 1888, p. 36; Bull. Chicago Acad. Sci., 1883. ' Elaphis obsoletus,var. lindheimerii, 8. Garman, Mem. Mus. Comp. ZOOL, 1883, pp. 54, 152. Body elongate, slender, slightly compressed, ventral sur- face flattened. Head large, elongate, clearly separated by the narrower neck. Only the median dorsal scales carinate. Ros- tral plate wide, excavated below. Prefrontals very large. Frontal pentagonal, nearly or quite as wide in front as long. One large anteorbital. Two or three postorbitals. Hight su-. pralabials, the middle of the eye above the line of juncture of the fourth and fifth. Thirteen infralabials, the sixth and seventh or fifth and sixth largest. Dorsal scales in from twenty- five to twenty-nine rows, the two or three outer rows of each. side smooth, the carine of remaining rows becoming more prominent above. Ventrals 217-239. Subcaudals 72-85. Color above brown or black with a silken gloss, or a gray ground color, and black or brown dorsal and lateral blotches. Beneath, straw-yellow in the young, with squarish or elongate blackish blotches, mostly confined to the sides in front, but gradually fusing toward the tail and giving a uniform dark slate-color on the under side of the latter. In adults most of the ventral surface is dark slate or black; in all stages on the Reptiles and Amphibians of Illinois. 291 under side of the head the color is uniform yellow, and this color occupies the middle of the scutelle for some distance be- hind the head. Labials mostly yellow, some of them with faint dusky margins. Total length, 64.50; tail, 10. Throughout the State. Most abundant in southern Illi- nois. Rashville, Galesburg, McLean county, Mt. Carmel (J. Schneck), Union county. Variety obsoletus. Dorsal scales in twenty-five to twenty-nine rows. Ven- trals 231-239. Subcaudals 76-85. Color above black or brown, sometimes with a gray ground color and black or brown dorsal and lateral spots. Beneath dark slate-gray posteriorly, becoming paler forward. Variety lindheimeri. Dorsal scales in twenty-nine rows. Ventrals 217-234. Subeaudals 72-85. Ground color gray, narrowly separating dorsal and lateral black or brown blotches. Southern Illinois. With material representing this species from various local- ities in the State, I find it impossible to separate the variety confinis from obsoletus. A complete series may be selected con- necting the darkest with the palest individuals of the species. The rows of dorsal scales vary from twenty-five to twenty- seven in both black and light-colored examples. This is a fine large species which bears a superficial resemblance to the com- mon black snake (Coluber constrictor) and this latter species is vecasionally credited with traits which belong to the pilot snake. The pilot snake is said to climb trees in search of birds’ nests as does the true black snake. Dr. J. Schneck, of Mt. Carmel, in a note to the American Naturalist for 1880, states that one of the forms of this species has the habit of moving the tail rapidly when excited, and thus producing a buzzing sound. Mr. Chas. Aldrich makes a similar statement concerning an- other form which he collected in Lowa. 292 Illinois State Laboratory of Natural History. Elaphis guttatus, Linn. Fox SnNakr, Corn SNAKE. Var. guttatus. Coluber guttatus, Linn., Syst. Nat , ed. 12, 1766, p. 385.—Holbrook, N. A. Herp., 1842, IIT., p. 65, pl. 14. i Scotophis guttatus, Bd. and Gir., Cat. N. A. Rept., Pt. 1., 1853, p. 78. Klaphis guttatus, Dum. et Bibr. Erp. Gén., VIL, 1854, p. 273. Coluber guttatus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., 1., No. 5, 1888, p. 37; Bull, Chicago Acad. Sci., 1883. Hlaphis guttatus, 8. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 5d, 152, pl. 4, fig. 1. Var. vulpinus. Scotophis vulpinus, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 75.—Kenn., U.S. Pac. R. R. Expl., 1853-55, XII., Book IL., p. 299, Coluber vulpinus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 36; Bull. Chicago Acad. Sci., 1883. Hlaphis guttatus, var. vculpinus, S. Garman, Mem. Mus. Comp. Zoobl., 1883, pp. 56, 153. Body moderately slender. Head large. Carinx of dorsal scales faint, several outer rows smooth. Rostral plate wider than high, emarginate beneath and with a lunate impression above the emargination. Frontal plate about as wide as long. One large anteorbital. Two postorbitals. Supralabials eight, eye over the fourth and fifth, seventh largest. About eleven infralabials, fifth and sixth munch the largest. Dorsal scales in from twenty-five to twenty-seven rows, seven or more outer smooth on the neck, farther back only two perfectly smooth. Ventrals 200-235. Subcaudals 65-79. Ground color above grayish yellow or brownish, with a dorsal series of large hazel blotches and on each side two or - three series of smaller blotches, the blotches of the lowest series extending upon the abdominal scutelle; all the spots obscurely margined with black. Beneath yellowish, checkered with black. Head brown above, uniform or with a dark bar reaching from orbit to orbit across the prefrontals and with others from the eye to the mouth. Two elongate brown spots on the neck, behind the head, may unite anteriorly upon the parietals. Total leneth 25.50 ; tail, 8.25. — - al Reptiles and Amphibians of /linois. 293 Throughout the State. Cook Co. (Mus. N. W. Univ.), Peoria (Brendel), Normal, Wabash Valley (Ridgway ). OPHIBOLUS, Bp. ANp Gir. Ba. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. $2. Dorsal scales smooth, in from seventeen to twenty-five rows. Anal plate entire. Rostral normal. Two internasals. Two prefrontals. Two nasals, occasionally but one. Loreal present or, rarely, wanting. One anteorbital. Two or three postorbitals. Body moderately stout. Head not well sepa- rated from the body. Dorsal scales in 25 rows. Spotted with olive-brown above. Obsoletely blotched below .............. O. CALLIGASTER. Dorsal scales in 21 rows. Spotted with chestnut-brown or with red above. Blotched with black below....0O. TRIANGULUS, Dorsal scales in 21 rows. Light chestnut-brown above, with obscure blotches. Uniform reddish yellow beneath or ob- Bm@ienoly DIObChed +.) on oe. eases O. RHOMBOMACULATUS Dorsal scales in 21 rows. Chiefly black above, with narrow transverse yellow lines which bifurcate on the flanks or not. Most of the dorsal scales with a yellow spot in some ex- STN SECS RASA SHE IA 1 Cote a REMORSE eR O. GETULUS, Dorsal scales in 19 rows. Loreal plate present. Red, with SE 5 21 a i Peet ta tin meee rent id O. DOLLATUS. Dorsal scales in 19 rows. Loreal plate wanting. Red, with "OTE ELSES HRI Aa a RR eR a O. ELAPSOIDEA. Ophibolus calligaster, Harlan. Coluber calligaster, Harlan, Jour. Acad. Nat. Sci. Phila., 1827, V., Pt. 1., p. 359. Ophibolus evansii, Kenn., Proc. Acad. Nat. Sci. Phila., 1859, p. 99. Lampropeltis calligaster, Cope, Proc. Aead. Nat. Sci. Phila., 1860, p. 255. Ophibolus calligaster, Davis and Rice, Bull. Ll. State Lab. Nat. Hist., I., No. 5, 1883, p. 34; Bull. Chicago Aead. Sci. 1883. Ophibolus triangulus, var. calligaster, 8S. Garman, Mem. Mus Comp. Zobl., 1883, pp. 66, 185. Rather large. Body tapering gradually to the extremi- ties. Head of moderate size, not noticeably wider than the 294 [Illinois State Laboratory of Natural History. neck. Tail cylindrical, tapering, short. All the dorsal scales smooth. Rostral plate wider than high, strongly convex, dis- tinctly but obtusely angulate on each side at the line of union of the anterior nasal and first labial plates, faintly angulate on each side between the anterior nasal and the internasal, and with an evident obtuse angle between the internasals. Frontal rather short and wide, its anterior margin nearly straight, late- ral margin converging posteriorly, acutely angulate behind. Loreal plate quadrangular. One large anteorbital. Hye small. Two postorbitals (three on one side in one example studied). Two elongate temporals wedged between the parietals and the fifth and sixth supralabials. Seven supralabials, the eye above the third and fourth, fifth and sixth largest. Nine infralabials, fifth largest, fourth next. Dorsal scales in twenty-five rows. Ventrals 199-207. Subcaudals 43-47. Color above olive-brown, with a dorsal series of from fifty- three to fifty-nine transverse dorsal brown blotches, each mar- gined with three, or, where the spots fuse, two, series of small brown spots. Beneath yellowish white (in alcohol), with ob- solete dusky blotches. A brown band, edged with blackish brown extends backwards on the neck from the outer margin of the parietal of each side. A brown spot on the frontal and parietals includes a small pale spot which lies partly upon the tip of the frontal. An obscure dark brown bar extends from orbit to orbit on the posterior portions of the prefrontals. Another bar exteuds from the eye to the angle of the mouth. The spots of the median dorsal row are about two and a half scales long and eleven wide. Posteriorly some of them are emarginate before and behind. Described from two examples in the Laboratory collection. . Total length of example from Pekin 40.75 ; tail 5.25. Occurs on prairies throughout the State. Not very com- mon. Pekin, southern Illinois (Mus. N. W. Univ.), Mt. Car- mel (Nat. Mus. ). This species bears a very strong resemblance in the char- acter of the plates of the head and the character and disposition of the spots to Hlaphis guttatus. It has the same small eye, the same transverse band between the orbits, the oblique band — | Reptiles and Amphibians of Illinois. 295 from the eye to the corner of the mouth and the elongate bands on the neck and back part of the head. Ophibolus triangulus, Boie. Mink Snake, CHICKEN SNAKE, House SNAKE, THUNDER AND LIGHTNING SNAKE, KING SNAKE, CHEQUERED ADDER. Var. triangulum. Coluber triangulum, Boie, Isis, 1827, p. 537. Coluber eximius, Holbr., N. A. Herp., 1842,*IIL., p. 69. pl. 15.— De Kay, Nat. Hist. N. Y., L., Zod]. IIL, Rept. and Amph., 1842, p. 38, pl. 12, fig. 25. Ophibolus eximius, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 87.—Kenn.,” Trans. Ill. State Agr. Soc., 1853-54, I., p. 592. Ablabes triangulum, Dum. et Bibr., Erp. Gén., VIL., 1854, p. 315. Ophibolus doliatus, subsp. triangulus, Davis and Rice, Bull. Il. State Lab. Nat. Hist. I., No. 5, 1883, p. 34; Bull. Chicago Acad. Sci., 1883. Ophibolus tr fangnilus, S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 65, 155, pl. 5, fig. 1. Var. doliatus. Ophibolus doliatus, Bd. and Gir., Cat. N. A. Rept. Pt. I., 1853, p. 89. Ophibolus doliatus, subsp. doliatus, Davis andiRice, Bull. Ill. State Lab. Nat. Hist., 1., No. 5, 1883, p. 34; Bull. Chicago Acad. Sci., 1883. Ophibolus triangulus, var. doliatus, S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 66, 155. Body cylindrical, maintaining its diameter well toward both extremities. Head of medium size. Neck rather thick in adults. Eye small. Tail short. All the dorsal scales per- fectly smooth. Rostral plate wider than high. Loreal quad- rangular. One anteorbital. Two postorbitals. ‘Seven suprala- bials, eye above the third and fourth, lower postorbital resting in a notch between the fourth and fifth. Nine infralabials, the fifth much larger than the others. Dorsal scales in twenty- one rows, the scales of the median rows differing less in size from those of the lateral rows than usual. Ventrals about 211. Subcaudals about 52 pairs (a few occasionally united). Color above pale brown or gray, with large dark brown or reddish brown dorsal blotches edged with black, and low down 6 296 Illinois State Laboratory of Natural History. on the flanks a series of small black spots with pale centers ; some of the latter spots alternate with the brown dorsal blotches, while others are opposite them and may fuse with their black margins. Sometimes there are two series of spots on the flanks. Iris red. Tongue red, black-tipped. Yellowish beneath, checkered with black, paler anteriorly, often mostly black posteriorly from fusion of the black marks, spots some- * times confined to the sides. Head brown above posteriorly, sometimes with a cordiform or triangular pale spot behind the parietals ; generally with a more or less distinct dark bar on prefrontals, reaching from one orbit to the other. A black dash extends from the eye to the corner of the mouth. Labials edged with black. The anterior dorsal brown spot generally includes the pale spot behind the parietals and extends upon the head; it frequently also fuses with the spot following. Total length of example from Galesbury, 36 ; tail, 5.12. Throughout the State. Moderately common. Freeport, Galesburg, Peoria (Brendel), Pekin, Hudson, Normal, Urbana, Mt. Carmel (Nat. Mus.), Cobden, Anna. Variety triangulus. With large chestnut-brown, black-margined dorsal spots separated by a gray or yellowish brown ground color. Check- ered with black beneath. Everywhere common. Variety doliatus. With large red black-margined dorsal blotches and white or gray interspaces. The approximation of the black margins of adjacent blotches gives the effect of pairs of transverse black lines embracing pale bands. Beneath yellowish, with — most of the black at the sides, or the surface mostly black. Southern [llinois. Farmers frequently find this species in their cellars, where it is supposed to be attracted by the milk. Its food, according to De Kay, consists of frogs and toads. Ophibolus rhombomaculatus, Holbr. Coronella rhombomaculata, Holbr., N. A. Herp., 1842, IIL., p. 108, pl. 23. . : | : Reptiles and Amphibians of Illinois. 207 Ophibolus rhombomaculatus, Ba. and Gir., Cat. N. A. Rept. Pt. L., 1853, p. 86.—Davis and Rice, bull. Ill. State Lab. Nat. Flist., I., No. 5, 1883, p. 34; Bull. Chicago Acad. Sci., 1883. Ophibolus triangulus, var. rhombomaciulatus, S. Garman, Mem. Mus. Comp. Zod6l., 1883, p. 156. Dorsal scales in twenty-one rows. Light brown above with a large dorsal and two small lateral series of dark-margined reddish brown blotches. Salm- on-red beneath, with very obscure dark blotches. A dark stripe extends from the eye to the corner of the mouth. Dorsal blotches about fifty-two (ten of which are on the tail), each about seven scales wide and from one and ahalf to two and a half scales long. Ventrals about 211. Subcaudals about 45. ~ Southern Illinois (Davis and Rice). Ophibolus getulus, Linn. Cuan Snake, KING SNAKE. Var. getulus. Coluber getulus, Linn., Syst. Nat., ed. 12, 1766, I., p. 382. Coronella getula, Holbr., N. A. Herp., 1842, IIL., p. 95, pl. 21. Coluber getulus, De Kay, Nat. Hist. N. Y., L., Zo6]. III., Rept. and Amph., 1842, p. 37, pl. 10, fig. 21. -Ophibolus getulus, Bd. and Gir., Cat. N. A. Rept., Pt. 1., 1853, p. 85. Coronella getula, Dum. et Bibr., Erp. Gén., VIT., 1854, p. 616. Ophibolus getulus, subsp. getulus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 33. Ophibolus getulus, S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 68, 156, pl. 5, fig. 3. Var. sayi. Coronella sayi, Holbr., N. A. Herp., 1842, ILI., p. 99, pl. 22. Coluber sayi, De Kay, Nat. Hist. N. Y., I., Zo6l. LII., Rept. and Amph., 1842, p. 41. Ophibolus sayi, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 84. Coronella sayi, Dam. et Bibr., Erp. Gén., VIL., 1854, p. 619. Ophibolus getulus, var. sayi, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., IL, No.5, 1883, p. 34; Bull. Chicago Acad. Sci., 1883.—S. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 68, 156. Body moderately stout. Width of the head but little greater than the diameter of the neck. Tail rather short, tapering. All the dorsal scales smooth. Rostral plate but little wider than high, convex, angulate between the interna- 298 Illinois State Laboratory of Natural History. sals. Frontal pentagonal or subhexagonal. Loreal present. One large anteorbital. Two postorbitals. Hye moderate in size. Seven supralabials, eye over the third and fourth, sixth _ largest, the succeeding plates rapidly decreasing in size. Dor- sal scales in twenty-one rows. Ventrals 200-224. Subcau- dals 41—52. Color above black, with transverse yellow lines, which may be very narrow and not extend downwards on the flanks, or may be so wide as to give the prevailing color and bifurcate on the flanks, thus producing a dorsal series of large black or brown areas and another smaller lateral one for each side. Sometimes with a yellow dot on most of the dorsal scales. Beneath yellow, with squarish blotches of black. Mostly de- void of black beneath the head and neck; sometimes nearly black posteriorly from union of the blotches. Head black above, dotted with yellow. Supralabials and infralabials black- edged. Throughout the State. Rare north, moderately common in the south part. Peoria (Brendel), Wabash and Richland counties (Ridgway), Anna and Dug Hill in Union county. Variety getulus. With from twenty-five to thirty-five transverse yellow lines which bifurcate on the flanks and divide the black of the dorsal surface into several series of large blotches. Most of the scales of the blotches uniformly black. This variety has not, to my knowledge, been found in Illinois. Variety sayi. Black, with more than sixty transverse yellow lines, some- times mostly lacking, which, as a rule, do not bifurcate on the flanks. Sometimes most of the dorsal scales have a central yellow dot. This variety represents the species in the State. The young may be taken occasionally under logs in southern Illinois. I[ have not collected it north of Union county, but Dr. Brendel reports itfrom Peoria, and Dr. Hoy has taken it in Wis- consin, so that it may be looked for anywhere within our borders. — y= . a ee ee . Reptiles and Amphibians of Illinois. 299 Variety niger, Linn. Mr. Ridgway reports this variety from Mt. Carmel. “Ttis - - unknown to me. Ophibolus doliatus, Linn. Coluber doliatus, Linn. Syst. Nat.,ed. 12, 1766, L., p. 379.—Harlan, Jour. Acad. Nat. Sci. Phila., 1827, V., p. 362. Coronella doliata, Holbr. (not of Dum. et Bibr.), N. A. Herp., 1842, p. 105, pl. 24. Ophibolus doliatus, subsp. coccineus, Davis and Rice, Bull. Il. State Lab. Nat. Hist., I., No. 5, 1883, p. 34; Bull. Chicago Acad. Sci., 1883. Ophibolus doliatus, 8S. Garman, Mem. Mus. Comp. Zool., 1883, pp. 64, 154, pl. 5, fig. 2. Body slender, cylindrical. Tail short. Dorsal scales smooth. Rostral plate wide. Frontal wide and short. One anteorbital. Two postorbitals. Loreal present. Supralabialsseven. Infra- labials eight. Dorsal scales in nineteen rows. Ventrals 169-176. Subcaudals 31-43 pairs. Color above light red, with from twenty to twenty-five pairs of transverse black bands which are continuous about the body, or are interrupted on the abdomen. Between each pair is a yellowish band. Occurs in southern Illinois according to Davis and Rice. It is probably rare. I have not seen it. This species may be known from the variety doliatus of O. triangulus by the fewer rows of dorsal seales and the char- acter of the transverse black lines. Ophibolus elapsoideus, Holbr. Calamaria elapsoidea, Holbr., N. A. Herp., 1842, IIL, p. 119, pl. 28. Osceola elapsoidea, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 133.—Davis and Rice, Bull. Ill. State Lab. Nat. Hist., [., No.5. 1883, p. 33; Bull. Chicago Acad. Sci., 1883. Ophibolus doliatus, var. elapsoideus, S. Garman, Mem. Mus, Comp. Zo6l., 1883, pp. 65, 155, Ophibolus elapsoideus, S. Garman, List. N. A. Rept. and Batr., Bull. Essex Inst., 1884. Small. Body siender. Tail short. Rostral plate wide. Frontal wide and short, subhexagonal. Loreal absent, its place 300 Illinois State Laboratory of Natural History. occupied by a downward extension of the prefrontals. One anteorbital. Two postorbitals. Supralabials seven, sixth largest, eye above the third and fourth. Infralabials seven, fifth largest. Dorsal scales in nineteen rows, the outer scales of each side a tritle the largest. .Ventrals 175-180. Subcau-— dals 44-54. Bright red above, with eighteen to twenty-five pairs of transverse black bands, each pair enclosing a white band. Head red in front, marked with black posteriorly, and with a yellow band bounded by black bars on the occipital region. The black bands may be continuous around the body, or be interrupted on the ventral surface. Anna; not uncommon (C. W. Butler). DIADOPHIS, Bp. AND Gir. Bd. and Gir., Cat. N. A. Rept., Pt. 1., 1853, p. 112. Dorsal scales smooth, in fifteen to seventeen rows. Anal plate divided. Rostral normal. Two internasals. Two pre- frontals. Two nasals. Loreal present. Two anteorbitals. Two postorbitals. Moderately slender. Head distinct from the body. Small species. Diadophis punctatus, Linn. Kine SNAKE. Var. punctatus. Coluber punctatus, Linn., Syst. Nat., ed. 12, 1766, L., p. 376.— Holbr., N. A. Herp., 1842, III., p. 81, pl. 18.— De Kay, Nat. Hist. N. Y., I., Zod]. III., Rept. and Amph., 1842, p. 39, pl. 14, fig. 29. Diadophis punctatus, Bd. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 112. Ablabes punctatus, Dum. et Bibr., Erp. Gén., VIL., 1854, p. 310. Diadophis punctatus, subsp. punctatus, Davis and Rice, Bull. Ill. State Lab Nat. Hist., I., No. 5, 1883, p. 35; Bull. Chicago Acad. Sci., 1883. Diadophis punctatus, 5. Garman, Mem. Mus. Comp, Zo6l., 1883, pp. 72, 188, pl. 2, fig. 2. Var. amabilis. Diadophis amabilis, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 1138. | ee ee Reptiles and Amphibians of [linois. 301 Diadophis punctatus, subsp. amabilis, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., 1., No. 5, 1883, p. 35; Bull. Chi- cago Acad. Sci., 1883. Diadophis punctatus, var. amabilis, 8. Garman, Mem. Mus. Comp. Zod6l., 1888, p. 159. Var. arnyi. Diadophis arnyi, Kenn., Proc. Acad. Nat. Sci. Phila., 1859, p. 99.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., L., No. 5, 1883, p. 35; Bull. Chicago Acad. Sci., 1883. Diadophis punctatus, var. arnyi, 8. Garman, Mem. Mus, Comp. Zo6l., 1888, pp. 72, 158. Small. Headdepressed. Tailshort. Dorsal scales smooth. Rostral plate much wider than high. Frontal wide, the width well maintained posteriorly. One nasal, the nostril opening in its middle, or two nasals, with the nostril opening mainly in the anterior plate. Two anteorbitals and two postorbitals. Supra- labials seven or eight, the third and fourth or the fourth and fifth beneath the eye. Supralabials eight or nine, the fifth large. Dorsal scales in from fifteen to seventeen rows. Ven- trals about 141-193. Subcaudals 36-59 pairs. Color above black or blackish brown, with a yellow band across the base of the head. Beneath yellowish, with a single median series or with numerous irregularly distributed spots of brown or black. Supralabials dark or yellow. Infralabials and other plates on the under side of the head uniform yellow- ish or each with a small brown spot. The yellow band of the base of the head varies in width from a single scale to three or even four scales, and may be interrupted in the middle; it is in most examples bordered before and behind with black. Throughout the State. Notcommon. Rock Island (Nat. Mus.), Warsaw, Union county (Mus. N. W. Univ.). Variety punctatus. Fifteen rows of dorsal scales. Uniform yellow below or without a median longitudinal series of dark spots on the ab- dominal scutelle. Ventrals 148-160. Subcaudals 36-56. Variety amabilis. Fifteen rows of dorsal scales. Yellow beneath, with numerous small black spots. Ventrals 182. Subcaudals 59. 302 Illinois State Laboratory of Natural History. Variety arnyi. Seventeen rows of dorsal scales. Yellow beneath, thickly spotted with black. Occipital band from one to one and a half scales wide. Ventrals 160. Subcaudals 50 pairs. A specimen of this species in the Laboratory collection from Warsaw, Hancock county, has the lower part of the ros- tral and, excepting a narrow superior border, all the supralabial plates but the last yellow. In some respects it resembles the form described by Prof. E. D. Cope as var. stictogenys. HETERODON, BzEavv. Beauv., Latreille, Hist. Nat. Rept., 1799. Bd. and Gir., Cat. N. A. Rept., Pt. L., 1853, p. 51. Dorsal scales carinated, in twenty-three to twenty-seven rows. Anal plate divided. Rostral plate plow-shaped, with a a keel above. ‘Two internasals, with a small azygos plate be- tween them or separated by numerous small plates. Two pre- frontals, in contact or separated by small plates. One or two loreals. Short and stout, with large, wide head and short tail. The species possess the power of expanding the body. Internasals and prefrontals in contact with the azygos. H. PLATYRHINUS. Internasals and prefrontals separated from the azygos by small Platieg ress seer ie sores ek a chal s wpe crest ee etter ena ke eels H. srs. Heterodon platyrhinus, Latreille. Spreaprine AppErR, Hoe- NOSE SNAKE, BLOWING VIPER. Var. platyrhinus. Heterodon platyrhinus, Latr., Hist. Nat. Rept., 1802, p. 32, pl. 28, fig. 1-3.—Holbr., N. A. Herp., 1842, 1V., p. 67, pl. 17.—De Kay, Nat. Hist. N. Y., I, Zodl. LI., Rept. and Amph., 1842, p. 51, pl. 13, fig. 28— Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 51.— Kenn., Trans. Ill. State Agr. Soc., 1853-54, L., p. 592.— Dum. et Bibr., Erp. Gén., VIL, 1854, p. 766.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 43; Bull. Chicago Acad. Sci., 1883.— 8. Garman, Mem. Mus. Comp. Zo6l., 1888, pp. 75, 159, pl. 6, fig. 5. Reptiles and Amphibians of Illinois. 303 Var. niger. Heterodon niger, Troost, Ann. Lye. Nat. Hist. N. Y., IIL, 1833, p. 186. Body stout. Head large. Snout recurved. Tail short and tapering. Dorsal scales, with the exception of the outer row of each side, carinate. Rostral plate produced forward, slightly recurved, anterior margins sharp, keeled above. Azy- gos plate elongate, bounded anteriorly by the rostral, at the sides by the internasals and prefrontals, and posteriorly by the prefrontals. Vertical longer than wide, hexagonal. Nine or ten anteorbitals, postorbitals, and suborbitals, with the supraciliary completely encircling the eye. Nostril valvular, situated in the posterior part of the nasal. A single loreal. Supralabials eight, increasing in size from first to seventh, eighth equal to fifth. Nine or ten infralabials. Dorsal rows of scales twenty-five. Ventrals about 140. Subcaudals 37-60. Color above from grayish brown to black, in: the lighter- colored examples with about thirty brown or black dorsal spots, with one or more series of smaller spots on each side, or with a series of squarish pale dorsal spots, margined before and be- hind with black and with a round black spot at each side. Often uniform brown above, sometimes blue-black. Beneath uniform whitish in adults, in young blackish or nearly uniform black. A dark bar, inciuding the anterior margins of the supraorbitals and frontal and the posterior half of the pre- frontals, extends from orbit to orbit. A bar on the head, be- hind the orbit, is continuous with a black bar which extends backward upon the neck. A short black vitta extends from the eye to the angle of the mouth. Total length, 27.37; tail, 3.62. Throughout the State; common south. Cook Co. (Kenni- cott), Peoria (Brendel), Tazewell Co., Belleville, Mt. Carmel, Union Co. Variety platyrhinus. Color above grayish to reddish brown, with dark bands. B04 Illinois State Laboratory of Natural History. Variety niger. Nearly uniform brown, or bluish black, large. Southern Illinois. Belleville, Mt. Carmel (Nat. Mus.), Saratoga. A singular species known everywhere as the spreading adder from its habit of expanding the head and neck when disturbed. From its threatening behavior it is thought to be poisonous, but it has no fangs and is consequently perfectly harmless. I have seen the variety niger when suddenly exposed by turning over a log under which it was concealed, lash the body about violently and cast a yellowish ma- terial from its mouth, at the same time hissing and expanding to its greatest capacity. This variety when struck a sharp blow, will sometimes pretend to be mortally wounded, casting itself upon its back and persistently returning to that position when placed belly downward. Heterodon simus, Linn. Hoa-Nosz SNAKE. Var. simus. Coluber simus, Linn., Syst. Nat., ed. 12, 1766, L., p. 375. Heterodon simus, Holbr., N. A. Herp., 1842, IV., p. 57, pl. 15.— Bd. and Gir., Cat. N. A. Rept., Pt. L, 1853, p. 59. Heterodon simus, subsp. simus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 44; Bull. Chicago Acad. Sci., 1883. Heterodon simus, 8. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 16, 160, pl. 6, fig. 4. Var. nasicus. Heterodon nasicus, Bd. and Gir., Stansbury’s Expl. and Suryv.,. Val. Great Salt Lake, 1853; Cat. N. A. Rept., Pt, L., 1853, pp. 61, 157. Heterodon simus var. nasicus, S. Garman, Mem. Mus. Comp. Zo6l., 1888, pp. 77, 160, pl. 6, fig. 6. Small. Body stout. Head large, convex above. Tail very short, cylindrical, tapering. Dorsal scales all carinate ex- cepting the outer row of each side; scales of the row next the outer with very faint carine on their basal portions. Rostral plate produced forward and upward, its.anterior face flat, Reptiles and Amphibians of Illinois. 305 keeled above, with sharp anterior margin. Azygos plate minute, surrounded by small plates which separate the interna- sals from the nostril. Prefrontals small, separated by small intervening plates. Nostril large, valvular, in posterior part of nasal. Two or three loreals. From ten to thirteen small oculars, with the supraocular encircling the eye. Supralabials eight, sixth largest. Infralabials ten to thirteen. Submentals short. _ Dorsal rows twenty-three to twenty-seven. About 146 ven- trals. Subcaudals about 40. Color above yellowish brown, with a dorsal and two or three smaller lateral series of brown spots. Beneath yellowish, more or less blotched with squarish black marks, these sometimes giving the prevailing color. Throat and neck uniformly pale beneath. A brown band extends from orbit to orbit, arching slightly forward. Behind this a pair of bars, one on each side, extend from the upper posterior rim of the orbit toward the middle line. A wide brown band extends from the eye to the augle of the mouth. Wide bands extend from the parietals downward and backward on each side of the neck; a short band on the middle line meets them at the posterior margin of the parietals. Total length of small Illinois example, 7.62; tail, 1. Rare in Lilinois. Pekia. Variety simus. About thirty-five spots in the dorsal series. Dorsal scales in twenty-five rows. From five to eight small plates about the azygos. Frontal plate as broad as long. Credited to Illinois by Davis and Rice. Variety nasicus. About fifty spots in the dorsal series. Dorsal scales in twenty-three rows. Azygos encircled by many small plates. Vertical plate slightly broader than long. The only example of the species in the collection of the State Laboratory represents this variety. B06 Lllinois State Laboratory of Natural History. HALDBA, Bn. anp Gir. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 122. Dorsal scales in seventeen rows. Anal plate divided. Rostral normal. One internasal. Two prefrontals. 'Fwo na- sals. Loreal elongate, with the prefrontal forming the anterior rim of the orbit. No anteorbitals. One postorbital. Small. Haldea striatula, Linn. Coluber striatulus, Linn., Syst. Nat., ed. 12, 1766, L., p. 375.— Harlan, Jour. Acad. Nat. Sci. Phila., 1827, V., p. 354. Calamaria striatula, Holbr., N. A. Herp., 1842, IIL, p. 123, pl. 29. Haldea striatula, Bd. and Gir., Cat. N. A. Rept., Pt. 1, 1853, p. 122. Conocephalus striatulu:, Dum, et Bibr., Erp. Gén., VIL, 1854, p. 140. Haldea striatula, Baird, U.S. Pae. R. R. Expl., 1859, X., Rept., pl. 32, fig. 91— Davis and Rice, Bull. Ill. State Lab. Nat. Hist. I., No. 5, 1883, p. 32; Bull. Chicago Acad. Sci., 1883. Virginia striatula, 8. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 97, 166, pl. VIL, fig. 2. Small. Moderately slender. Head scarcely wider than the neck. ‘Tail short. Dorsal scales carinated. KRostral plate narrowed above. But one internasal, subtriangular. Prefron- tals reaching the orbit. Nostril opening in the posterior mar- gin of the anterior nasal plate. Loreal elongate, reaching the orbit. No anteorbitals. A single postorbital. Supralabials six, fifth largest. Dorsal scales in seventeen rows, the outer row of each side obsoletely, the rest distinctly carinate. Ven- trals 119-130. Subcaudals 25—46 pairs. Color above grayish or reddish brown. Beneath yellowish or reddish. A light chestnut band across the parietals; some- times wanting. Length about 10 inches. Southern Illinois. This species is reported from Wisconsin and other points to the north of us, and we may therefore look for it anywhere in the State. Reptiles and Amphibians of Illinois. 307 VIRGINIA, Bp. anp Gir. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 127. Dorsal scales smooth, in fifteen or seventeen rows. Anal plate divided. Rostral normal. Two internasals. Two pre- frontals. Two nasals, nostril in the posterior edge of the an- terior plate. Loreal large, with the prefrontal bounding the orbit in front. No anteorbitals. Two postorbitals. Small. MMMHBEIES In 1) TOWS .. os... cece ac cance eves V. ELEGANS. Migren! scales.in ID TOWS. .... 2... sce cc celle es V. VALERIZ. Virginia elegans, Kenn. Virginia elegans, Kenn., Proc. Acad. Nat. Sci. Phila., 1859, p. 99.—Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. d, 1883, p. 31; Bull. Chicago Acad. Sci., 1883.—S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 98, 166. ‘““Resembles V. valeriv ; vertical and occipital plates nar- rower. Dorsal scales very narrow and elongated, much more so than V. valeriv, disposed in seventeen rows. Color uniform light olivaceous brown above; dull yellowish white beneath.” “Readily distinguished from the nearly allied V. valerie by the narrower dorsal scales in seventeen rows instead of fifteen as in that species.” “Heavily timbered regions of southern Illinois” (Kenni- cott), Mt. Carmel (Ridgway). Virginia valerie, Bd. and Gir. Virginia valerie, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 127.—Bd., U. 8. Pac. R. R. Expl., 1859, X., Rept., pl. 33, fig. 94. — Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 31; Bull. Chicago Acad. Sci., 1883.—S. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 98, 166, pl. 7, fig. 3. Small. Head scarcely wider than neck. Tail short, taper- ing. Rostral about as high as wide. Internasals present. Prefrontals reaching the orbit. Frontal hexagonal. Nostril opening in posterior edge of anterior nasal plate. Loreal elon- gate, reaching the orbit. No anteorbitals. Two postorbitals. Supralabials six, fifth largest. Infralabials six. fourth largest. 308 Illinois State Laboratory of Natural History. Dorsal scales in fifteen rows, all smooth. Ventrals 117-128. Subcaudals, 24-37 pairs. Grayish or yellowish brown, uniform, or with from two to four longitudinal series of black spots. Uniform yellow be- | neath. Spots of the back sometimes irregularly distributed. Not common. Cook Co. (Nat. Mus.), Union Co. (Mus. N. W. Univ.). CARPHOPHIS, GERY. Gerv., D’Orbv. Dict. Nat. Hist., 1843, IIT., p. 191. S. Garman, Mem. Mus. Comp. ZoGl., 1883, p. 99. Dorsal scales smooth, in thirteen rows. Anal plate divid- ed. Rostral normal. Internasals present or absent. One nasal. Loreal large, reaching the orbit. No anteorbitals. One postorbital. Very small. Head not distinct from the body, depressed. Tail short, terminating in a single acute nail. ING internals. oct roe ae ae oO ee ae ee C. HELEN. Tnternasals presenti Mie). ok wean dene e ore ake C. AM@NA, Carphophis helene, Kenn. Worm Snake. Celuta helene, Kenn., Proc. Acad. Nat. Sci. Phila., 1869, p. 100. Carphophiops helene, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 31; Bull. Chicago Acad. Sci., 1883. Carphophis helena, 5. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 100, 166. Small. Body cylindrical, maintaining its diameter well toward the extremities. Head small, depressed, no wider than the neck. Tail moderately long, its tip covered by a sharp conical nail. A single pair of prefrontals, each of which forms part of the anterior boundary of the eye of its side. No inter- nasals. One nasal, the nostril opening in its middle. An elongate loreal, forming part of the anterior rim of the orbit. Noanteorbitals. One postorbital. Supraciliary unusually small. Frontal large, wide. Supralabials five, the fifth largest and elongated. Six infralabials, fourth largest. Dorsal scales in thirteen rows, all smooth and polished. Ventrals 120-125. Subcaudals 30-36. Color above from pale to dark olive-brown. Supralabials, outer row of dorsal scales of each side, and entire ventral sur- face, flesh-color. = Reptiles and Amphibians of [llinois. 309 Total length of an example from Cobden, 9.62; tail, 1.68. Southern Illinois. Not uncommon. Mt. Carmel (Ridg- way ), Cobden, Dug Hill, Union county. Occurs under logs in the woods. Carphophis amocenus, Say. GRouND SNAKE. Var. amoenus. Coluber amenus, Say, Jour. Acad. Nat. Sci. Phila., 1825, IV., p. 237.— Storer, Bost. Jour. Nat. Hist., 1840, III., p. 28. Brachyorrhos amenus, Holbr., N. A. Herp., 1842, III., p. 115, pl. 27. Celuta amena, Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 129. Carphophis amena, Dum. et Bibr., Erp. Gén., VII.,-1854, p. 131.— Allen, Proc. Bost. Soc. Nat. Hist., 1869, p. 182. Carphophiops amenus, Davis and Rice, Bull. Il. State Lab. Nat. Hist., I., No. 5, 1883, p. 31; Bull. Chicago Acad. Sci., 1883. Carphophis amena, 8. Garman, Mem. Mus. Comp. Zodl., 1883, pp. 100, 167, pl. 7, fig. 1. Var. vermis. Celuta vermis, Kenn., Proc. Acad. Nat. Sci. Phila., 1859, p. 99. Carphophiops vermis, Davis and Rice, Bull. Ili. State Lab. Nat. Hist., I, No. 5, 1883, p. 31; Bull. Chicago Acad. Sci., 1883. Carphophis amena, var. vermis, S. Garman, Mem. Mus. Comp. ZO61., 1883, pp. 101, 167. Small, cylindrical. Head small, not wider than the neck. Tail of moderate length, terminating in a point. Rostral wide. Internasals present. Prefrontals forming part of the anterior rim of the orbits. One nasal. Loreal large, elongate, reaching the eye. No anteorbitals. One postorbital. Supraciliaries very small. Supralabials tive, the fifth largest. Infralabials six, third largest. Dorsal scales in thirteen rows, all smooth and shining. Ventrals 112-131. Subcaudals 24-36 pairs. Lustrous brown or black above. Flesh-color beneath. Reaehes a length of about 12 inches, with the tail 1.50. Occurs throughout the State. Not common. Cook Co. (Kennicott), Mt. Carmel (Ridgway ). Variety amoenus. Brown above. Outer row of dorsal scales and ventral surface, flesh-color. 310 Illinois State Laboratory of Natural History. Variety vermis. Black above. Two outer rows of dorsal scales and the ventral surface flesh-color. Larger than var. amenus. FAMILY CROTALIDA. With poison glands and erectile fangs, ordinary teeth few. Head wide and deep, with a deep pit between the eye and nos- tril. Cephalic plates crowded forward, or the frontal and two parietals wanting. One or two nasals. Loreal present or ab- sent. Pupils of the eye vertically elongate. Most of the dor- sal scales strongly carinated. Some or all of the subcaudal scutelle united. Tail short, with or without rattle. This family includes the rattlesnake, water moccasin, and copperhead. All are venomous, but not so dangerously so as is commonly supposed. They may be known from most of the non-venomous species from their stouter bodies, wider heads, and the pit between the eye and nostril. No harmless snake of this country has this pit. In regard to these depressions Owen writes: ‘“Secreting follicles of the skin in serpents are chiefly confined to certain depressions or inverted folds of the derm. These in Crotalus and Trigonocephalus constitute a pit between the nostril and the eye on each side of the head.” A few harmless species, such as the spreading adder, resemble the members of this family in stoutness of body. With the exception of members of the genus EHlaps, the family contains the only venomous serpents in the United States. The four described below are the only poisonous species which occur in Illinois. With a rattle. Frontal and parietals lacking. Supralabials — separated from the eye by more than two series of small plates. Most of the subcaudal scutelle entire. .CROoTALUS. With a rattle. Frontal and parietals present. Supralabials separated frem the eye by two series of small plates. The posterior subcaudal scutelle divided.......... SISTRURUS. Without a rattle. Frontal and parietals present .. ANCISTRODON. Reptiles and Amphibians of Illinois. 311 CROTALUS, LINN. _ Linneus, Acc. Mus. Adolph. Frid., 1754, p. 39. Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 1. Head deficient in cephalic plates, the frontal and parietals being absent and their place being occupied by small scales like those on the body. Pit between the eye and nostril large. Fangs and poison glands well developed. Supralabials sep- arated from the orbit by three or more series of small plates. Dorsal scales in from twenty-one to thirty-one rows, carinated. Subcaudals entire or with one or two posterior divided. Rattle present. Body moderately stout. Tail short. Crotalus horridus, Linn. Timper RAtriesNAKE. Crotalus horridus, Linn., Syst. Nat., ed. 10, 1758, L., p. 214. Crotalus dwrissus, Holbr. N. A. Herp., 1842, III., p. 9, pl. 1.— De Kay, Nat. Hist. N. Y., L., Zoél. IIL, Rept. and Amph. 1842, -p. 55, pl. 9, fig. 19.— Kenn, Trans. Ill. State Agr. Soc., 1853-54, I., p. 592.—Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 1. Caudisona horrida, Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 309. Crotalus horridus, Davis & Rice, Bull. ill State Lab. Nat. Hist., I., No. 5, 1888, p. 27; Bull. Chicago Acad. Sci., 1883.—S. Gar- man, Mem. Mus. Comp. Zo6l., 1883, pp. 115, 174, pl. 9, fig. 1. Large, reaching a length of six feet. Body moderately short. Neck contracted abruptly behind the head. Tail short, com- pressed, not tapering. Iostral plate small, narrowed above. Two nasals, the anterior larger. Two or more loreals. Two - anteorbitals, the superior larger, the inferior smaller and form- ing the superior margin of the pit. About five postorbitals and suborbitals, the latter separated from the supralabials by two rows of scales. Supralabials fourteen, first and fifth (fourth in some examples) largest. Fifteen infralabials. A pair of large elongate submentals. Dorsal scales carinate, excepting the outer rows, which are smooth or obsoleteiy carinate in front, in from twenty-three to twenty-five rows. Ventrals 165. Sub- caudals 23, the first and last paired. Color above brownish yellow to almost black, posteriorly with transverse zigzag bands of chestnut-brown, edged with black and bordered outside the black with yellow, anteriorly with three series of brown spots bordered in the same manner. ‘ 312 Illinois State Laboratory of Natural History. Beneath yellow, more or less blotched and speckled with black at the sides. Head uniform brown above, with a wide brown band extending from the eye obliquely downward and _ back- ward over the angle of the mouth. ‘Tail black in adults, banded ~ in young. Total length of specimen from Mt. Vernon, 46; tail, with nine rattles, 4.50. Throughout the State in hilly forest regions, but being rapidly exterminated. Cook Co. (Kennicott), Peoria (Brendel), Wabash Valley (Ridgway), Mt. Vernon, Union Co. SISTRURUS, 5S. GARMAN. S. Garman, Mem. Mus. Comp. Zo6l., 1883, pp. 110, 176. Wagler, Caudisona, Syst. Amph. 1830, p. 176. bd. and Gir., Crotalophorus, Cat. N. A. Rept., Pt. I, 1853, p. 11. With large symmetrical cephalic plates. Loreal present. Pit between eye and nostril large. Fangs and poison gland well developed. Supralabials separated from the orbit by two series of small scales. Dorsal scales in twenty-three to twenty- five rows, from one to three outer rows smooth. Subcaudals entire or but few divided. Rattle present. Body stout. Tail short. Sistrurus catenatus, Raf. Massasauea, Pratriz Rarrie- SNAKE. Crotalinus catenatus, Raf., Am. Month. Mag., 1818. LV., p. 41. Crotalophorus tergeminus, Holbr. N. A. Herp., 1842, LIL., p. 29, pl. 5.— De Kay, Nat. Hist. N. Y., L, Zodl. IIL, 1842, Rept. and Amph. p.57.—Bd. and Gir., Cat. N. A. Rept., Pt. I., 1853, p. 14.— Kenn., Trans. Ill. State Agr. Soc., 1853-54, L., p. 592. Crotalophorus kirtlandii, Kenn., 1.c.—Dum., et Bibr., Erp, Gén. VIL., Pt. I1., 1854, p. 1482. : Crotalus tergeminus, Dum. et Bibr., Erp. Gén., VIL, Pt. IL., 1854, p. 1479. Caudisona tergemina, Davis & Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 28; Bull. Chicago Acad. Sci., 1883. ’ Crotalus catenatus, 8S. Garman, Mem. Mus. Comp. Zo6l., 1883, p. 118, pl. 9, fig. 2. Sistrurus catenatus, idem, 1. c., p. 176. Small. Body fusiform. Head moderately wide. Neck slender. Tail short, scarcely tapering. Dorsal seales carinate Reptiles and Amphibians of Illinois. 313 except the two outer rows of each side. LRostral plates exca- vated below. Anterior nostril much the larger, reaching the posterior nasal and in contact above with prefrontal and su- praciliary. Inferior anteorbital about half as wide. About four postorbitals and suborbitals. Supralabials small, about thirteen. Infralabials thirteen. Dorsal rows twenty-five. Ven- trals 140. Subcaudals 28, generally a few posterior plates divided. Color above gray to blackish brown, with a dorsal series of about forty chestnut-brown spots edged with black, and outside the latter color narrowly margined with white. On each side two or three series of smaller brown spots similarly margined. First dorsal spots with two arms which extend forward to the parietal plates. A wide brown band extends from the eye over the angle of the mouth and terminates on the side of the neck; it is margined above with pale yellow and below by a yellow bar which extends from the inferior anteorbital across the angle of the mouth. Superior labials mostly brown. Beneath thickly blotched with black, paler anteriorly. Total length, 25.50; tail, with four rattles, 3 inches. Prairies throughout the State. Cook Co. (Kennicott), Galesburg, Peoria (Brendel), Pekin, Normal, Farmer City. ANCISTRODON, BEAvv. Beauvais, Agkistrodon, Trans. Am. Phil. Soc., 1799, p. 381. Dum. et Bibr., Trigonocephalus, Erp. Gén., 1854, VII., p. 1488. S. Garman, Ancistrodon, Mem. Mus. Comp. Zodl., 1883, p. 120. With symmetrical plates on the head. Loreal present or absent. Pit between the eye and nostril large. Fangs and poison glands well developed. Dorsal scales in from twenty- three to twenty-five rows, all strongly carinated. Posterior subeaudal plates divided. No rattle. Body short. Tail short, terminating in three elongate plates. Terrestrial or aquatic. Includes the poisonous copperhead and the water moccasin. Scales in 23 rows. Loreal present. Terrestrial. .A.coNTORTRIX. ‘Scales in 25 rows, Loreal wanting. Aquatic...A. piscrvorus. 314 Lilinois State Laboratory of Natural History. Ancistrodon contortrix, Linn. CopprerHEap. Coluber contortrix, Linn., Syst. Nat. ed. 10, 1758, p. 216. Trigonocephalus contortrix, Wolbr. N. A. Herp., 1842, IIT., p. 39, pl. 8—De Kay, Nat. Hist. N. Y., I., Zodl. IfI., Rept. and Ampbh., 1842, p. 53, pl. 9, fig. 18. Agkistrodon contortrix, Bd. and Gir., Cat. N. A. Rept., Pt. I, 1853, p. 17. Trigonocephalus contortrix, Dum, et Bibr., Erp. Gén., 1854, VIL., Pt. IJ., p. 1494. : Ancistrodon contortrix, Cope, Proc. Acad. Nat. Sci. Phila., 1859, p. 336.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., J., No. 5, 18838, p. 28; Bull. Chicago Acad. Sci., 1883.—S. Gar- man, Mem. Mus. Comp. Zo6l., 1883, pp. 120, 178, pl. 8, fig. 1. Body moderately stout. Head wide. Neck slender. Tail short and tapering. All the dorsal scales carinate. Ros- tral large. Frontal pentagonal. Generally three prefrontals, the median very small. Loreal present, separating the pos- terior nasal from the superior anteorbital. Anteorbitals three, inferior minute. Postorbitals from four to six. Supralabials eight, the third not reaching the orbit. Infralabials ten. Dorsal rows of scales twenty-three. Ventrals about 150. Subcaudals about 45, the posterior in pairs. Color above light chestnut-brown, with a series of inverted Y-shaped brown marks on each side. Color beneath yellowish, with a series of black blotches on each side. Head uniform brown above, each parietal with asmall brown spot with a pale margin; sides with a yellowish white band which posteriorly rounds the angle of the mouth and extends forward on the in- fralabials. Length from two to three feet. Throughout the State; rare north, frequent south. Peoria (Brendel), Anna (C. W. Butler). This species is very rare in northern Illinois, if it occurs there at all. Dr. Brendel reports having seen but two specimens at Peoria, and these more than twenty years ago. It is not uncommon in the southern part of the State, and Messrs. Boyer and Strode report it as not rare in Fulton county. ae Reptiles and Amphibians of Illinois. 315 Ancistrodon piscivorus, Lac. Warer Mocoasr. Crotalus piscivorus, Lac., Buffon’s Hist. Nat., Quad. Ovip. et Serpens, 1789, II., pp. 180, 424. Trigonocephalus piscivorus, Holbr., N. A. Herp., 1842, IIT., p. 33, i By Fe caop his piscivorus, Bd. and Gir., Cat. N. A. Rept., Pt. L, 1853, p. 19. Trigonocephalus piscivorus, Dum. et Bibr., Erp. Gén., VIL, Pt. 2, 1854, p. 1491. Ancistrodon piscivorus, Cope, Proc. Acad. Nat. Sci. Phila., 1859, p. 336. Ancistrodon piscivorus, subsp. piscivorus, Davis and Rice, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, p. 28; Bull. Chicago Acad. Sci., 1883. Ancistrodon piscivorus, 8. Garman, Mem. Mus. Comp. Zodl., 1883, p. 121, pl. 8, fig. 2. Body short and stout, tapering toward both extremities. Head large, deep, wide. Neckslender. Tail short, compressed, ° tapering, abruptly more slender than the body. All the dorsal scales carinate. ostral plate large, truncate above. Inter- nasals triangular, the outer margin arcuate. Frontal large, longer than wide, hexagonal. Parietals large, their posterior extrenities nearly or quite separated by transverse sutures. Nasals two. Noloreal. Three anteorbitals, the superior large, elongate, and reaching the posterior nasal. Three small post- orbitals. Seven or eight supralabials, the third reaching the orbit Ten infralabials. Dorsals in twenty-five rows. Ven- trals 136 Subcaudals about 45, often the first, and generally from 7tt-on to twenty-five posterior, paired. Color above brown or blackish, with about eleven trans- verse black bands alternating with as many brown bands, the latter widening on the back and with a dusky center, the black bands widening at the sides and often with a brown area in the expanded latera! portions. Sometimes nearly uniform blackish brown, often mostly brown with narrow transverse lines of black. With numerous black blotches beneath, black pos- teriorly. Head uniform brown or black above, with a wide black band, edged above with brown and below with yellow, extending from the eye over the angle of the mouth and ter- minating on the neck. Tail uniform black, or with a few pale spots beneath posteriorly, sometimes banded. 316 Illinois State Laboratory of Natural History. Total length of a very large specimen trom Bluff Lake, 46; tail, 6.25. Shallow lakes and bayous of southern Illinois, abundant. Bluff Lake, Union Co., Mt. Carmel (Ridgway). The water moccasin is very abundant in the lakes of the southern part of the State. Mr. Ridgway of the National Mu- seum states that it occurs as far north as Mt. Carmel, and thinks possibly even to Vincennes. During July it may be seen in great numbers coiled up on partly submerged logs, where it lies for hours basking inthe sun. If disturbed it hisses and vibrates its tail after the manner of its relatives, the rattlesnakes, but always retreats into the water when approached too closely. Sometimes it makes its way up an inclined tree to adistance of six or eight feet above the water, but tumbles headlong into the water when alarmed. Mr. Peery, who lives at the edge of Bluff Lake, in Union Co., tells me that in the fall of the year this serpent leaves the water and resorts to the bluffs for hi- bernation. A female kept in confinement by Mr. C. W. Butler, of Anna, gave birth to young in the fall of the year. Dogs are occasionally bitten by this species, but generally recover after a spell of severe sickness. All the Illinois examples of the species belong to the va- riety piscivorus. The variety pugnax may be known from the position of its second labial, this plate being crowded up- ward from the margin of the jaw. It has not been observed within our limits. CLASS AMPHIBIA. Exoskeleton generally wanting. Two occipital condyles. Mandible of several pieces. No true diaphragm. Respiration during a part or whole of life by means of branchie. Heart in the adult with three chambers. Two aortic arches. Blood not warm, red corpuscles nucleated. Alimentary canal termi- nating in a cloaca. Oviparous. Illinois members of the group belong to the two orders characterized below. Our species all have naked skins. A group (order Gymnophiona) represented by a few genera occur- Reptiles and. Amphibians of Illinois. 317 ing in Africa, South America, and Ceylon has small embedded scales, and is further characterized by absence of limbs and tail. Body of adult stout, short. Hind legs suited to leaping and swimming. No tail. Frogs and toads..... Order ANURA. Body long and slender. Hind legs not enlarged for leaping and swimming, sometimes wanting. Tail and sometimes branchie persistent. Salamanders....... Order URopELA. ORDER ANURA. (Amphibia Ecaudata, Theriomorpha, Batrachia.) Body stout, short, more or less depressed. With two pairs of legs, the anterior of which bear four, and the larger posterior pair five, digits. Mandible generally toothless. Adults tailless. Vertebral column composed of but few vertebra and terminat- ing in along solid coccyx—the urostyle. Sternal arch complete. Radius and ulna fused. ‘Tibia and fibula also fused. The two proximal tarsal bones very long and often fused at their extremities. The adults are known as frogs and toads. They move on land by leaps, the structure of the posterior legs being specially suited to this mode of locomotion. In water they use the same legs for swimming. The food consists chiefly of small inverte- brates, insects constituting the greater part of it. The young are known as pollywogs and tadpoles. They are fish-like, liv- ing in water, in which they swim with the aid of a tail, and breathing by means of branchiew. Instead of teeth they pos- sess horny jaws. At this stage of their lives they subsist chiefly on vegetable substances, such as filamentous Algae, diatoms, desmids, etc. SYNOPSIS OF THE FAMILIES REPRESENTED IN ILLINOIS. 1 (2). Fingers and toes with no evident discs at their tips. 3. i (1); ne and toes with evident dises.............. *. 3 (4). Upper jaw with teeth. No overlapping sternal cartilages; omosternum and sternum present. Transverse processes of sacrum subcylindrical. RANID AB 318 Illinois State Laboratory of Natural History. 4..(8). ‘No tbeeth. puis 4 ots Ve D. 5 (6). No parotid. Omosternum wanting, clavicle and precoracoid sometimes wanting. ‘Transverse pro- cesses of sacrum expanded ........ ENGYSTOMID&. 6 (5). Parotid present. Sternal arch with clavicles, pre- coracoids and overlapping cartilages; omosternum WRINDLTL 7 Viti. ieeetonea wae ets nee eee BuFONID®. ae With teeth. Sternal arch with overlapping carti- lages; omosternum and sternum present. Trans- verse processes of sacrum expanded...... Hyp”. FAMILY RANIDA. No parotids. Fingers and toes generally without discs ; the former without webs, the latter webbed ; basal portions of fourth and fifth toes not bound together. Teeth on the upper jaw, and generally on vomers also. No fontanel between pa- rieto-frontals. Omosternum and sternum present. Coracoids expanded, in contact with each other and narrowly separated from the precoracoids by cartilage. No epicoracoids. ‘'Trans- verse processes of sacrum subcylindrical. Urostyle articulated to two sacral concavities. Liver with three lobes. A large and widely distributed family, including many large species. It is represented in Illinois by the single genus Rana. } RANA, Linn. Linnus, Systema Nature, ed. 10, 1758, I., p. 210 (S. Garman). Hoffmann, Bronn’s Thier-Reich, VI., Amphibien, p. 618. Holbrook, N. A. Herp., IV., p. 77. Fingers and toes very slightly or not at all expanded at their tips, the former without webs, the latter more. or less webbed. Tongue wide, free and deeply excised behind. Tym- panum distinct. Skin smooth or slightly tuberculate. Gland- ular folds present or absent. Vomerine and maxillary teeth present. No fontanel between the parieto-frontals. Males with two lateral vocal sacs. This genus includes all the large active frogs of swamps and meadows. Seven species occur in the State. 1 (2). 2 (1). 3 ( 4). 4 ( 3). 5 ( 8). G ( 7). 1 ( 6). 8 (5). 9 (11). 10 (12). di ¢ 9). he 10), 319 Reptiles and Amphibians of Illinois. SYNOPSIS OF THE ILLINOIS SPECIES. With distinct dark spots above, arranged in more or less perfect longitudinal rows.............. 3. Spots, when present, obscure and not arranged in POULIN TOW 20 oh e'cieloie wile Sas oad Ses 9. With more than two complete rows of spots be- tween the glandular folds of the back. R. AREOLATA. With but two complete rows of spots between the SPAM WIAEL POI SC .tr sce anes oe) Seen hoe 5. Spots oval or nearly round; glandular folds narrow ERIC NAGE co's oct Post Se lala eel eli d ate elocid os 6, Spots isolated, anterior of the three on the head small or wanting; males with saccular dilations. behind the angles of the mouth. R. UTRICULARIA. Spots not isolated, anterior of the three on the head about equal to the others; males without MHCOMIGI CUAUIONG 2... 2/60. ste tia Aas R. PIPIENS. Spots squarish ; glandular folds wide and depressed. | R. PALUSTRIS. With distinct glandular folds on the sides of the baek: size emall orsmediom): 22. 68 ooo cts 10. Tympanum large. No distinct dark spot extending from the nostril through the eye and including TOWN (0a) 07115 Oa oA, AR R. cLAMITANS. No, or very indistinct, glandular folds. Size very | lp RRR a ec NS ot R. CATESBIANA. Tympanum very small; a distinct dark spot extend- ing from the nostril through the eye and includ- ing the tyMpanunh.. o..% 2. 2% os <2 R. sILVATICA. Rana areolata, Bd. and Gir. Rana areolata, Bd. and Gir., Proc. Acad. Nat. Sci. Phila., 1852, VI., p. 1738. Rane capito, LeC. Proc., Acad. Nat. Sci. Phila., 1855, VILL., p. 425. 320 Illinois State Laboratory of Natural History. Rana areolata, Baird, Mex. Bound. Sury., 1859, III., Reptiles, p. 28, pl. 36, fig. 11 and 12. Rana areolata, subsp. capito, Cope, Check List N. A. Batr. and Rept., 1875, p. 415. Rana circulosa, Rice and Davis, Jordan’s Man. Vert., 2d ed., 1878, p. 355. Rana areolata, Boulenger, Cat. Batr. Sal.in Coll. Brit. Mus.,2ded., 1882, Sal. Ecaudata, p. 41. Rana areolata, subsp. capito, Rice and Davis, Bull. Ill. State Lab. Nat. Hist., I., No. 5, 1883, pp. 22, 23. Rana areolata, subsp. circulosa, Rice and Davis, Bull. Chicago Acad. Sci., 1883. Body about two and a half inches long, rather stout. Glan- dular folds conspicuous. A saccular dilation at the corner of the mouth in males. Skin tuberculate and punctate above, smooth below; femora granulate posteriorly. Head large, obtuse, with a marked concavity between the nostril and the eye. Fingers with slight web. Web of toes small and with deeply incurved margins. Color above dark gray or slate-color, with abont six longitu- dinal rows of round dark spots margined with yellowish. Sides marked with numerous spots and specks of black. Yellowish white beneath, with dark markings of irregular size and shape on the throat. Inrides golden mingled with black. An- terior and posterior legs gray, the former with spots and the latter with alternating wide and narrow bands of black. Inter- spaces between larger markings speckled with dusky. Length of body, 2.33; width of head, .89; femur, 1.06; tibia, 1.06; tarsus and fourth toe together, 1.64. Rare. Northern [llinois. The only specimen known to have been taken in Illinois was collected years ago by Robert Kennicott, and is now in the collection of the National Museum at Washington. In 1878 Messrs. Rice and Davis secured a specimen from northern In- diana and described it as a new species (2. circulosa), which, at a later date, they reduced to the rank of a variety. Kennicott’s specimen was examined by them and pronounced identical with the Indiana specimen. The specimen at Washington is labeled R. areolata capito, and a study of more material from this region will probabiy show this name to be the right one for Illinois examples of the species. Reptiles and Amphibians of Illinois. 321 Rana utricularia, Harlan. Rana utricularius, Amer. Jour. Sci. and Arts, 1825, X., p. 60; Jour. Acad. Nat. Sci. Phila., 1826, V., p. 337. Rana halecina (in part), Dum. et Bibr., Erp. Gén., 1841, VIII, p. 352. Rana berlandieri, Baird, Mex. Bound. Surv., 1859, IIL, Reptiles, p. 27, pl. 36, fig. 7. Rana halecina, subsp. berlandieri, Cope, Check List N. A. Batr. and Rept., 1875. , Rana utricularia, Boulenger, Cat. Batr. Sal. in Coll. Brit. Mus., 2d ed., Sal. Ecaudata, p. 40. Size large; body about three inches long. Olive-green above, with isolated subcircular black spots. Legs spotted and banded with black. Pale below. Males with saccular dila- tions of the skin behind the angles of the mouth for the accom- modation of the vocal sacs. Length of body, 2.50; from tip of snout to axilla, 1.25; femur, 1.25; tibia, 1.37; tarsus and fourth toe together, 1.94. The above measurements are from a male taken near Phila- delphia, Pa. A male from Macomb, Miss., is smaller. Dunleith (Ridgway), Union Co. The major part of the description of 2. pipiens will ap- ply to this species. The size, proportions, and the plan of markings are about the same in both species. The saccular dilations of the skin in the males of this species will readily distinguish them. Both sexes can probably, in most cases, be distinguished from those of Ff. pipiens by the character of the spots and by the general color. In this species the spots are fewer in number, are smaller, rounder, and more widely sepa- rated. The anterior of the three spots of the head is smaller than the other two, or may be wanting. The general color is more brown than green, and gives specimens a slight general resemblance to f. palustris. A few immature specimens of Rane from Villa Ridge and Anna are referred with some hesi- tation to this species. One of the largest of these is a male of the year, and shows the distended skin at the corners of the mouth. The ground color of these specimens in life was slate- gray with a slight coppery tinge. The head, above, in males was pale green with a brassy tinge over the eyes and along the sides of the snout. Pupil of eye black; iris coppery above and 322 Illinois State Laboratory of Natural History. below, black anteriorly and posteriorly. Tympanum brown, with a pale center. Glandular folds yellow. Femora gam- boge-yellow ventrally, and, in a female, with a wash of the same color along the flanks. The largest of these specimens meas- ures 2.37 inches in length. ir Rana pipiens, Schreber. Lroparp Frog, SHap Froe. Rana pipiens, Schreber, Der Naturforscher, 1782, p. 182 (8. Gar- man). Rana pipiens, Gmel., Syst. Nat., ed. 13, 1788, III., p. 1052. Rana halecina, Dum. et Bibr., Erp. Gén., 1841, VIII., p. 352.— Holbr., N. A. Herp., 1842, IV., p. 91, pl. 22.—De Kay, Nat. Hist. N.Y., I, Zol. III., 1842, Rept. and Amph., p. 63, pl. 20, fig. 49.— Kenn., Trans. Ill. State Agr. Soc., 1853-54, I., p. 593. Rana pipiens, LeC., Proc. Acad. Nat. Sci. Phila., 1855, VIII, p. 424. Rana halecina, Boulenger, Cat. Batr. Sal. in Coll. Brit. Mus., 2d ed., 1882, Sal. Ecaudata, p. 41— Davis and Rice, Bull. Il. State Lab. Nat. Hist., I., No.5, 1883, p. 24; Bull. Chicago Acad. Sci., 1883. Rana pipiens, 8S. Garman, Bull. Essex Inst., XX., 1888, p. 95. Body about three inches long; slender. Males with no saccular dilations of the skin at the corners of the mouth. Skin smooth above and below, excepting that of the ventral posterior surfaces of the femora, which is granulate. Head obtusely pointed, sides scarcely arcuate. Margin of lower lip notched on each side of the symphysis, leaving a median knob. Tongue obcordate, with two small posterior lobes; free for half its length behind, and also extensively free at the sides. Nostril about midway between the tip of the snout and the an- terior border of the eye. Eye large. Tympanum circular in outline; about two thirds the longitudinal diameter of the eye. A well-developed glandular fold extends along each side from the posterior upper margin of the eye nearly to the posterior extremity of the body, terminating above the femora. Two other folds, one for each side, extend along the upper lip obliquely downward and backward between the tympanum and the angle of the mouth, and terminate above the axilla. Mar- gins of the webs deeply incurved between the toes, not extend- ing beyond the base of the penultimate phalanx of the fourth Reptiles and Amphibians of Lllinois. 323 toe. Palms with two obscure tubercles; soles, each with a large and a small tubercle. Green above, with more or less perfect series of pale mar- gined oval black spots on the back, and with the legs spotted and banded with black. White or yellowish white beneath. Margin of the upper lip pale or green, with a dark band above the pale margin, often including spots of pale, extending pos- teriorly to the angle of the mouth. Above the dark stripe is a pale one which extends from near the tip of the snout posteri- orly and passes upon the glandular fold, which is pale to its posterior extremity. An obscure dark band extends from the nostril to the eye, but is often interrupted, or may be repre- sented by a black spot over the nostril only. Pupil of the eye black, iris golden. Tympanum brown, with a pale spot in its center. The head above is marked with three large spots of about equal size; one of these lies on the middle line just in advance of the eyes, the other two lie one above each eye. Between the glandular folds of the back are two longitudinal series of oblong and oval black spots, with about four or five spots in each series. (Generally there are several extra spots between the series. The glandular folds of the back are yellow. Immediately below the folds is a series of large black spots, and beneath these are several large spots and a number of smaller round black spots of irregular size. Anterior legs spotted with black above, and constantly with a black dash on the base of the humerus. Posterior legs with black transverse bars above and with a few spots between the bands at the mar- gins; sometimes only spotted. Posterior surface of femora vermiculate or spotted with black. Posterior surface of the tarsi with a more or less perfect black longitudinal band. Body beneath pale yellow or white, with a few small spots near the angle of the mouth, and sometimes with the lower lip and sides of the throat dusky. Length of body, 2.69-3.56; from tip of snout to axilla, 1.25-1.68 ; femur, 1.87-1.87 ; tibia, 1.56-2.06 ; tarsus and fourth toe, 2.06-2.81. The measurements first in order were made in all cases from a male; the higher measurements were from females. 324 Illinois State Laboratory of Natural History. The species occurs in abundance throughout Illinois. Dunleith (Ridgway), Freeport, Cook Co. (Kennicott), Green R., Henry Co., Normal, Peoria (Brendel), Cairo, Grand Detour ( Yarrow). . This frog can generally be distinguished from its near ally, 2. palustris, by the shape of the spots on the back, by the equal size of the three spots on the head, by the narrower and more elevated glandular folds, and by the ground color above, which is green, brassy, or greenish gray, instead of brown. As a rule, this species has less black about the tympanum. Speci- mens are occasionally found which are nearly intermediate be- tween the two species, and the young especially are often very similar. There still exists a difference of opinion as to whether or not the males of FR. pipiens have external vocal sacs. The fact is that the vocal sacs are as truly external in Ff. palustris and LI. pipiens as they are in L. utricularia (KR. berlandieri, ete. of authors), and the difference between the two former and the two latter, in respect to the sacs, is that the skin behind the angle of the mouth is conspicuously distended to accommodate the sacs in FR. utricularia, and is not thus expanded in the other two species. Of the many males of Ff. pipiens which have been ex- amined from central Illinois none have the skin distended, but all have sacs just beneath the angle of the mouth between the skin and adjacent muscles. The species has been described as having internal vocal sacs, but the latter occupy the same po- sition as in FR. wtricularia, and differ only in being smaller. Next to the bull frog, this is our most familiar species. It oc- curs everywhere along brooks and about ponds, and in damp weather may be found in fields at a considerable distance from water. During the dry weather in August it collects in great numbers about pools of water on the prairies. Its food con- sists of insects and, at least occasionally, of mollusks. In the few stomachs examined by the writer, Coleoptera constituted the principal part of the former. The mollusks were taken from the stomach of a single specimen and belonged to the ge- nus Limnea. Reptiles and Amphibians of Illinois. 320 Rana palustris, LeC. Pickrren Frog, Marsu Frog. Rana palustris, LeC., Ann. Lyc. Nat. Hist. N.Y., 1825, I., p. 282.— Dum. et Bibr., Erp. Gén., 1841, VIII., p. 356.— Holbr., N. A. Herp., 1842, IV., p. 95, pl. 23.— De Kay, Nat. Hist. N. Y., I, Zool. II1., Rept. and Amph., 1842, p. 62, pl. 22, fig. 60.—Cope, Check List N. A. Batr. and Rept., 1875.— Boulenger, Cat. Batr. Sal. in Coll. Brit. Mus., 2d ed., 1882, Sal. Ecaudata, p. 42.— Davis and Rice, Bull. [ll. State Lab. Nat. Hist., L., No. 5, 1883, p. 24; Bull. Chicago Acad. Sci., 1883. Body about two and a half inches long. Males with no saccular dilations of the skin at the corners of the mouth. Skin smooth above and below, excepting granulated areas on the ventral posterior surfaces of the femora. Head obtuse, dis- tinctly arcuate at the sides when viewed from above or below. Margin of lower lip notched on each side of the symphysis, leav- ing a median knot. Tongue obcordate, with two posterior lobes; free for half its length posteriorly, and also extensively free at the sides. Kye large. Tympanum circular in outline, about two thirds the longitudinal diameter of the eye. Nostril about midway between the eye and the tip of the snout. Palms with a pair of inconspicuous tubercles; soles with a large and a small tubercle each. Margins of webs incurved between the toes, not reaching beyond the penultimate phalanx of the fourth toe. A wide depressed glandular fold extends from the posterior margin of the eye along the sides of the back nearly to the posterior extremity of the body. Another glandular fold extends along the side of the head passing over the angle of the mouth posteriorly and terminating above the axilla. Color above pale brown, with four series of large, quad- rangular brown or black spots with pale margins. Under part of the body yellowish white; of the thighs bright yellow. Upper lips with dark irregular spots, forming in some examples an almost continuous stripe. Above this stripe is the yellow glandular fold, and above the anterior portion of the fold is a dark band which includes the nostril and extends to the an- terior border of the eye. Pupil of the eye black; iris golden. Tympanum pale brown with some black at its center. Be- tween the tympanum and the eye is asmall triangular black spot. Digits three. Branchial tufts not fimbriate. With longi- MATE Sy gee nia cas ec RR oho Ske PSEUDOBRANCHUS. Digits four. Branchial tufts fimbriate. Without longi- EES a eas ie Renee i> 2 rea a al ee ee SIREN. SIREN, Linn. Linnzus, Act. Acad, Upsal. 1766. Dum. et Bibr., Erp. Gén., 1854, IX., p. 191. 12 384 Tilinois State Laboratory of Natural History. Body long and slender. Mouth small, inferior. Tongue free in front and slightly free at sides. Vomerine teeth in two patches, not in contact in front, widely divergent posteriorly. Internal nares outside the patches of teeth. Branchial tufts fimbriated. Tail short, compressed, with a slight dorsal mem- brane. The genus includes but the single species described below. Siren lacertina, Linn. Siren lacertina, Linn., Act. Acad. Upsal. 1766.— Harlan, Jour. Acad. Nat. Sci. Phila., 1826, V. p. 321 Holbr., N. A. Herp., 1842, V., p. 101, pl. 34.— Baird, Jour. Acad. Nat. Sci. Phila., 2d Ser., I., 1849, p. 291.— Dum. et. Bibr., Erp. Gén., 1854, IX., p. 193.— Smith, Tailed Amphibians, 1877, p. 12.— Boulenger, Cat. Batr. Sal. in Coll. Brit. Mus., 2d ed., 1882, Sal. Caudata, p. 87.— Davis and Rice, Bull. Ill. State Lab. Nat. Hist., L, No. 5, 1883, p. 6; Bull. Chicago Acad. Sci., 1883. : Total length from two to three feet. Slender and eel-like. Head rather small, depressed. Hy small, embedded, well for- wards. Snout but slightly rounded from side to side, almost truncate. Nostrils inferior, widely separated. Mouth small, inferior, transverse; lower lip marked off by a groove. Lower jaw provided with a black, corneous, sharp-edged covering, like ‘he jaws of tadpoles, in place of teeth. Upper jaw with a sim- ilar but smaller plate. Vomerine teeth in two large oblique patches. Three coarsely fimbriate branchial tufts. Branchial opening not large, covered by three free arches, bearing at their inner margins series of short cartilaginous tubercles. The single pair of legs is placed close behind the head. They are rather weak, and bear four small digits which have dark horny tips resembling claws. Vent, a puckered orifice. Tail compressed and tapering towards the tip, with a slight dorsal membranous expansion. Color above dusky or black, sometimes with small whitish spots. Beneath bluish black. Length from tip of snout to posterior margin of vent, 6.87; tail beyond the latter point, 3.37. Not uncommon in southern Illinois. N. Ill. (Davis and Rice), Alton (Cope), Running Lake, Union Co., Mt. Carmel ( Ridgway ). Reptiles and Amphibians of Illinois. 385 A small example of this species from Running Lake, Union Co., was marked when alive with a bright orange band across the end of the muzzle and another one extending from the sides of the mouth to the bases of the branchial tufts. This remarkable batrachian is not uncommon in the mud of lakes in the southern portion of Illinois. It is probably pretty strictly limited to that portion of the State, though Messrs. Davis and Rice record it from northern [Illinois on the strength of a specimen in the collection of the Northwestern Univer- sity at Evanston. What they feed upon is not very definitely known. LeConte found nothing but mud in the stomachs of those he examined, and we imagine this had been taken for the minute organisms it contained, just as the tadpoles of frogs fill their intestines with this material for a similar purpose. The acute black corneous tips of the digits, especially marked in young, led Linnzus to describe the Siren as possessing . claws, and a granulation of the skin observable in some alco- holic specimens probably led others of the fathers to describe it as possessing small embedded scales. Linnzeus is represented as writing to Dr. Gordon of South Carolina, to whom he was indebted for specimens of the Siren, that nothing had so much exercised his mind, and there was nothing he so much desired to know, as the true nature of this animal. Le Conte and others proved many years ago, by finding spawn in its, ovaries that it was an adult batrachian. So many southern species inhabit the south part of the State that it would not be surprising if Pseudobranchus striata should also be found to occur there. uid Sea RE, nda ary aes: feat aD: Haat eve hiitdl 4 Fee medhee ube pak a ist) watiedieanenh vig! Deis £, pie, tye Eyine “WMebtig Le AS ged pinema ee web d he sag: pitt} = ikea tte fers i hy Re Asset sh. Sar? pts paettaers Wiggeenss TTL at etl vrs ee WI Be ars weiantiil tou nctrog perl OGaeng Pine SIM) Pepescus ag he a Ne Lats pedi by ult ed iat - Hine VA ete pees Rib siforis too ineeye't 43 irony alia . | ' . r ; i) . x een} ¢ x TOL EPIE Mi Pe ‘ , i Vise Higy itt: iu fom ie Vertis hols as Sains we, ‘Bagh (phew CH Saou PE ; mite Gnas Sh avd ay ES Poway / Anas Hitech hit LAAN eel alts. tt ry oie pial ae ; tf duo i iy foiwt dng nae : ‘ ad Yor pated Si) ' ie on bai) atin ‘ ae i or. ia vain 12 te aft fi ox hy uy rt 4h bey Mi erage eal pl Lae; ae ees Ms. frig tis wD 2 iy at toot Be tnahten ce wee Agi Seis Sie LAER et Sth Tey HBie* | ie pats | yy + i i vy Bow iepa . a eh ph be ate 2 ony nye ¥ ne A tae 445 & wg ; . 9 zt) a wu Ay ive ‘BA Ali: Es eked tad vives tee | Auge etecas de 4 arebatr tak 7 ry ae ae bi ged ae poe, 5 EXPLANATION OF THE FIGURES. PLATE IX. Fig. 1—Ventral view of the shell of Hmys meleagris. Fic. 2.—Dorsal view of the shell of Chrysemys marginata: a, dorsal plates; 6, costal plates; c, marginal plates; d, nuchal plate. Fic. 3.— Ventral view of the shell of Chrysemys marginata: a, gular plate; 6, postgular plate; c, pectoral plate; d, abdeminal plate; é, preanal plate; 7, anal plate; g, axillar plate; h, inguinal plate. Fia. 4.— Ventral view of the shell of Aromochelys odoratus. PLATE X. Fig. 5.— Ventral view of the shell of Chelydra serpentina. Fig. 6.—Right ramus of mandible of Malacoclemmys geo- graphicus. Fig. 7—Right ramus of mandible.of YW. leswewrt. Fic. 8—Ventral view of the skull of MW. geographicus: max, maxilla; # vomer; pl, palatine bone. Fig. 9.—Ventral view of the skull of WM. lesweurt. Same bones, outlined as in Fig. 8, PLATE XI. Fic. 10.—Feet of Cistudo carolina: a, fore foot; b, hind foot. Fic. 11.—Feet of Chrysemys marginata : a, fore foot; b, hind foot. Fia. 12.—Feet of Emgs meleagris: a, fore foot; 6, hind foot. PLATE XII. Fia. 13.—Aspidonectes spinifer, dorsal view. Fig. 14.—The same, ventral view. PLATE XIII. Fia. 15.—Ventral view of the head of Hlaphis obsoletus:: 1, in- fralabials; m, submentals; 7, ventrals. Fic. 16.—Dorsal view of the head of ZF. obsoletws: a, rostral plate; b, internasal; ¢c, prefrontal; d, frontal; e, supraorbital; 7, parie- tal; o, dorsals. Fia. 17.—Lateral view of the head of JZ. obsoletus: g, nasals; h, loreal; 7, anteorbital; 7, postorbitals;%, supralabials; 7, infralabials; o, dorsals. Reptiles and Amphibians of Illinois. 388 Fia. 18.—Dorsal view of the head of Hwmeces faciatus. Fria. 19.—Bones of the rudimentary hind limb of Boa scytale, (After Hoffmann.) Fie. 20.—Rudimentary hind limb of Python, showing muscles, (After Hoffmann.) Fia. 21.—Rana areolata: a, hind foot; b, fore foot. PLATE XIV. Fig. 22.— Rana clamata: a, hind foot; b, fore foot. Fie. 23.—Rana catesbyana: a, hind foot; b, fore foot. Fia. 24.—Acris gry'lus: a, hind foot; b, fore foot. Fia. 25.—Chorophilus triseriatus : a, hind foot; b, fore foot. Fia. 26.—Hyla versicolor: a, hind foot; b, fore foot. PLATE XV. Fic. 27.—Sternal bones of Rana catesbyana: st, sternum; ws, xphisternum; co, coracoid; cl, clavicle; os, omosternum; s, scapula; ss, suprascapula. Fic. 28.—Sternal bones of Bufo lentiginosus: st, sternum; vs, xiphisternum; co, coracoid; ep and ep’, epicoracoids; pc, precera- coids; cl, clavicle; s, scapula; ss, suprascapula. Fia. 29.—Sternal bones of Hyla versicolor: st, sternum; os, omo- sternum. RUPE i la w'sje.0e = sso Ga 4 PC ERGIGOR os van co Se ticles wane Aromochelys........... 238, 240 | Hemidactylium......... 360, 368 Amblystoma... ........ 215, 369 | Heterodon.......... AMBLYSTOMIDZ ....... SBS, BOO! | EV YATODS) s 6. sicis.c os ckies-sie e's PPEINIULISREE © hice oe acinar ot Pbk ches GT AED AGI lale co hs old acs anil PAENGIUID AD xccis/os:. - une es 249, 252 | Macroclemmys.............. PONG AS Stato cfok nits seealtehs 317 | Malacoclemmys......... 219, 224 Aspidonectes........... 215, 246 | MENOPOMIDZ........ SWIG Ge Senn p ee neaeeaenes Soom PNB CUUIBUSIN Nate cclsseeisslleitasy 341 ROB ONUD Ay. ccceiss ce sees SIS 38s) | NerOGia joe. cee. 5 3 CWarpnopnis®. 2%. 2. se. 263, 308 | Oligosoma,.............. PAUMMOIN TAC So ceed eee Sos. 216 | Ophibolus .......... MUNGIODUS! fares ok coos vis sees Hee 7a byeallex Wea cH 8 OO Soe ee eer enor 0 eee 245; OP MIS AMEUS cee cic aie etal elersielciaiste CHELLYDRID@......... 218, 242 | Phyllophilophis......... SOrapHLUs,..0. 2... 6.66 Sag. 848-1 PiGVODNIS . <2 .gie cee ins o'- Chrysemys...:.,.-.. ALOK tas ee ISUROGON ere. svcails sare as- CINOSTERNIDZ......... 218, 237 | PLETHODONTIDZ PRMGSLOTOUM: 05:55 5005 sie 0. sees 238 | PLEURUDELIDZ WISthUCO® Fee. cs sees 215, 218, 219 | PROTEIDZ.... Cnemidophorus............. 255 | Pseudemys.......... (OS) 112) ee a Op oe at P EUAMIL cc cs; oo vie lere esp siere shackles PEC RGEEPAS os oetaisis oS aivie wsa2.e Ee) LU AUN TODAS Yavatolotis/e' a's imiere aye CC ROMANGUD Airs 5: cc tis ci< <0.0's SOLS OM WRB SINA Syne cape cree eres 0 eee S10 ise 41 SS Mal 59) OF Fat OS), See ee CRYPTOBRANCHIDA, Errata, 3880 | SAURIA............... Cryptobranchus............. BBO |i SCOLOPOTUSS. 0s ccc; cicisie’s sree «t= UVB a a aia vos, o 000 26a) oar ES SOLNOID Alas sc.cicicte waste el « 249, DESMOGNATHIDZ ...... SERB DIT “asp ORES Aes ae a See DB DCos ont Desmognathus.......... BLOT SHIN | OL RENIUD:AD scien vie.c.cielsisvsa «1c DFACLODUIS ose closes = 0.5 s1e0 BOs wadH Ol MOUS OMT) PUICNOOTY ILS, <5 u's vies, eg wns su aod +) SPBIOPDOB) 2525 eee eens cn’ IAT IS scccio ta xic)a ale telers, © BOSeaSOn le MUOLCLIA ey «ecieccesieccisie re’ EVD AG asc cece cccv as Pe el eoh Lo an (Go Cc IU Sper hal nieatcis lca/en eles 218, 2210 PRION YOGHID AG. os cicc.s oreo HS VALOMNG sec cccc + corners 331 | Tropidoclonium ENGYSTOMIDZ.......... SIS Boke [eC HO ELA. vain os view wine A OCENE orn GX oo. F ian Sx ae wine BO Ue ho WAL RERs ois s Vanes uulse se OR MUREE UNAS sXe spiky 80 wee > 262, 263 INDEX OF GENERA. Lee ft’ | SD 2 a ary! 7 < yeaa A a yo Ae ye a? ? } to" PP a ‘ 1 . ‘ 12t - . . a ey ‘ SATB aoe 35 aw aye D ’ ri aby ne - iy e i) w' . ; : Wek oe ’ ae SS Te , ; ‘| 1 he he well ey ae Le ttey * ; g 00 ‘ eh a) a ae 5 hg Ge aftre als i eT, ‘ ; ror , LO Oe : ; ta rr 1 A ge . " wee * vs 7 \ ow eae uy ~ eter eee ; yy Kode { . ait fe e - egies ee i Wa i - hid eee 2 Gt } v 4 e ae eZ ‘ $3 ‘ a rae Naish ot ay er om \ ‘ pA ‘ ‘ ; i 2G ‘ f j 3 + j eee eens ¥ Fs) 6 + ‘ 7 r ary v nf ni Or Ba ed get * & , i 4 as “s & sate , , Pi Y . ! Cr en * . i ‘ ee Cec Ce «+ , . * a4 6 als 2 eee i. 2 - ; > Q ; , . Co ack. a ' a a = 4 hte ae ds Cer Pa a ° v4 Awe kae ef Teene 7 fr il ys Barks J yee. t be 4 y ain Fy j , ‘ = Saas es pene 5 ‘ : C , « ee te eae . r — f * a 44 . . Pit ane ee . 5 , ee POP Wide ae soe 3 SON are 2 oR wh be oe 2 ’ ; , ” 4 , 6 az ¢ 4 2 5, ipa , * Fal ve A . = mips g y ; rs f\ x : ie f ; ce re ee ee a ‘ 7 ap . ; r av as ae . x i Tr ‘ fees : ‘ Fedele kite ee si ' 1% ‘ 3 e . ae at ‘ § . ae oa . 3 se le ree 4 ¢ ‘ . . ow ee ie ; t- bo hae } o at ? ‘ ne wf 4 : . as i) 7 / j we . 4 TAO ae eau se ' 7% & ole ~ ’ ; , i, Pats “ A ~ ets ; eee ri . Wires ied: ; te - ; ; ' ne ft we SAS ie ye Tus 5 ' ‘ y ‘ re i ; Ee sy ae aa eta ak ae Fa faby 5 * ; . : ao ye wees PLATE IX. Fia. 3, = bs et ry ry A Pa as > a e355 - wr i‘ ae = “=P PLATE X. Fi4. 5. Fia. 6. Figa. 7. Fia. 8, Fia. 9. 4 \ ' } ' < / —) e Ai a e i A wo PLATE XI. Fre, 10: Fig. 12 PLATE XII. Fig. 14, PLATE XIII. 11% y NSIT A aay Fie. 15. Fia. 16. Fia@. 19. Pig. 2) \ UL ASR \ Joh, \) Ou) ai c 7 ° oe ——— C2 men is more nearly perpen- dicular than in occidentalis. Below, head and juga black, chest yellow, abdomen tawny, legs yellow. Tegmina and wings dilute vellow ; sides of ablomen and chest yellowish. Lower edge of prothorax compressed behind lateral angles. Length 2.9 mm. ; | Described from two specimens. Types in author’s col- lection and in that of Mr. Van Duzee. Hab.— Arizona (Coquillett). 99. 16. M. Basaris, Walker. 1851. Monecphora basalis. Walk. List Hom. B. M. 683, 26. Hab—Jamaica (Walker). 17. M. neerecta, Walker. 1851. Monecphora neglecta. Walk. List Hom. B. M, 683, 27. Hab.—Jamaica ( Walker). 488 18. 19. 20. 21. 22. 24. 25. Illinois State Laboratory of Natural History. III. TRIECPHORA, Am. & Smrv. T. contigua, Walker. 1851. Triecphora contiqua. Walk. List Hom.-B. M 670, alls Hab.—Honduras ( Walker). IV. SPHENORHINA, Am. & SERV. S. assrmriis, Walker. 1858. Sphenorhina assimilis. Suppl. 182. Hab.—Mexico (Walker). 5. srmuLans, Walker. 1858. Sphenorhina simulans. Suppl. 183. Hab.—Mexico ( Walker). S. cructata, Walker. 1858. Sphenorhina cruciata. Suppl. 183. Hab.—Mexico ( Walker). S. srmris, Walker. 1858. Sphenorhina similis. Walk. List Hom. Suppl. 182. Hab.—Mexico ( Walker). S. QUADRIGUTTATA, Walker. Walk. List Hom. Walk. List Hom. Walk. List Hom. 1851.. Sphenorhina quadriguttata. Walk. List B. M. 689, 11. Hab.—Honduras (Walker). S. niInEaTA, Walker. 1851. Sphenorhina lineata. 691, 16. Hab.—Honduras ( Walker). S. prvirtra, Walker. 1858. Sphenorhina bivitta. Suppl. 181. Hab.—Mexico ( Walker), Walk. List Hom. Walk. List Hom. B. M. B. M. B. M. Hom. B. M. BoM: Genera of the North American Cercopide. 489 V. RHINAULAX, Am. & Szrv. 26. R. coccrnza, Fabr. ' 1794. Cercopis coccinea. Fabr. Ent. Syst. iv, 48, 4. 7 1803. Cercopis coccinea. Fabr. Syst. Rhyng. 98, 21. 1841. Tomaspis coccinea. Am. & Serv. Hem. 560. 1851. Tomaspis coccinea. Walk. List Hom. B. M. 666, 4. Triecphora coccinea, Walk. List Hom. B. M. 669, 7. 1869. ? coccinea, Stal, Hem. Fabr. ii, 118, 21. Hab—West Indies (Fabricius). SUBFAMILY APHROPHORINA,, Sra. VI. LEPYRONIA, Am. & Serv. 27. L. sorprpa, Stal. 1864. Lepyronia sordida. Stal, Hem. Mex. 67, 403. 1866. Lepyronia sordida. Stal, Berl. Ent. Zeit. x, 384. Hab—Mexico (Stal), Illinois (Forbes). 28. L. QUADRANGULARIS, Say. 1825. Cercopis quadrangularis. Say, Jour. Acad. Nat. Sci. Phil. iv, 338, 1. 1831.