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Peed ib ; wee " ; ‘aiteent Ay uy : } ere eld tt ent) brary | ann % scsi | ligne : 7 ! al ! eure 4 itl M bm ooo Ree qaee ano tentee CC TT TT LN alain grnatenl TEE L Maa VATTt Ne RIO | ROR Te) ayetetins Ye 75a i <= we wy OFF ogy AAO? 1! “tad A pa er NEW wets ae Fa ST lind wy. wel iu A is . a fae yee Sie Mas ies fo eg Nov Ji S , : : N/+ (Ohio State Academy of Science , SPECIAL PAPERS, No. 5 1) ~Tabanidae of Ohio WITH A CATALOGUE AND BIBLIOGRAPHY Of WE SPECIES FROMVAMERIGA, NOR ORT MEKTE®@ JAMES S. HINE Date of Publication, May 1st, 1903 Publication Committee : J. H. SCHAFFNER, L. H. McFADDEN, GERARD FOWKE, COLUMBUS: PRESS OF SPAHR & 1903 IN@id: The results presented in this paper are based on a part of the observations and extensive collections made under two grants of fifty dollars each from the Emerson McMillin Research Fund, and some of the expense of publication is also met by a further contribution from the same fund. ; Wm. R. LAzENBY, F. M. WEBSTER, Joun H. SCHAFFNER, Trustees. TABANIDAE OF OHIO. WITH A CATALOGUE AND BIBLIOGRAPHY OF THE SPECIES FROM AMERICA, NORTH OF MEXICO. INTRODUCTION. With Osten Sacken’s admirable “Prodrome of a Monograph of the Tabanidz of the United States,’ most of the species of the family from the eastern part of our country may be identified readily. And with Williston’s paper in the tenth volume of the Kansas Academy of Sciences most of our species not included in the above contribution are fully characterized. Hart’s paper in the fourth volume of the Bulletin of the Illinois State Labor- atory of Natural History is also useful in separating the various stages of the genera Tabanus and Chrysops, and is an important contribution to the life histories of a number of species of these two genera. The economic position occupied by the family is admirably treated in Osborn’s paper on “Insects Affecting Do- mestic Animals,’ in Bulletin number five, new series, of the United States Division of Entomology. Other important con- tributions have appeared from time to time, but a thorough ac- quaintance with all this literature will not always give the stu- dent of the group the information he desires regarding points which come up in connection with many of the species of our fauna. It is my intention in this paper to give some of the results of observations on habits taken during a somewhat extended study of members of the family, and follow with a systematic treatise of the forms known to occur within the bounds of the. state of Ohio. At some future time, when the necessary mate- rial has accumulated it is the intention to give a full treatise ot all the forms known to occur in North America. The following have aided me up to the preset time, in-sub- mitting material for study: The United States National Museum; The Museum of Com- parative Zoology; F. L.. Harvey; Charles Dury; H. A: Gossard; @) Be Wititney; E. D: Ball > 2 Bi Walliamson; j- ©) Bridwells Miss S. E. Harris; Chas. W. Johnson; C. C. Deam; Iowa State Colllases (Cy Sei Winnaalleys vis (Ce Olson s Ik We dalebagencs Is vil Oslar; F. F. Crevecoeur ; Carnegie Museum ; University of Kan- sas: H. S. Parish; R. E. Kunzé; J. T. Lloyd: Franklin Sher= man, Jr.; Charles Fuchs ; Mrs, Anna T. Slossen. ai 4 OHIO STATE ACADEMY OF SCIENCE. I desire to study material; from all parts of North America and: offer to name specimens for anyone who will send them in; asking nothing for the naming except such specimens as_the sender himself is pleased to donate. eae It is the desite to make this paper plain enough to be easily understood, but the student must understand that it is necessary _ to have perfect specimens in order to be sure of his results in all cases. Many of the characters used in determining species in this family are easily damaged, consequently in collecting and pinning great care should be exercised. sy EGGS AND EGG-LAYING. All the species of the family I have observed ovipositing, place their eggs on some object that projects from and-overhang the water or that stands in wet and marshy places. All of the Chrysops whose egg laying habits 1 know and many species of Tabanus place their eggs over water while other species of Tabanus oviposit on plants standing in wet ground. Some species are very precise in placing their eggs. Thus T. stygius, which is a very common species at Sandusky, follows the interesting habit of ovipositing on the upper surface of the leaves of Sagittaria just above the point where the petiole meets the expanded part of the leaf. So closely is this habit followed that a hundred masses of eges are found thus located to one placed otherwise., A few masses were observed on Nymphe leaves but located exactly as when placed on Sagittaria. Only a very few masses were ob- served not placed in exactly the same position in reference to the leaves on which they were found. In a certain marshy place where I have seen, in different years, numerous masses of eggs of T. atratus I noticed that these masses were nearly always found on the same species of Scirpus and situated very much alike in the great majority of cases. I have watched several females of C. callidus during the entire process of oviposition which in this species usually occupies from twenty minutes to half an hour; during which time some- thing like one to three hundred eggs are laid. The female alights on the leaf head downward and begins by pushing the tip of her abdomen forward toward the sternum of the thorax and placing the protruding end of an egg against the leaf. This end sticks fast and she then moves the tip of her abdomen backward until its normal position is reached and the ege becomes free. By the same movement one or two eggs are then placed to one side of this one and two or three on the other side of it. The unfinished end is soon observed to be V-shaped ; the female moving very gradually forward and placing the end TABANIDA OF OHIO. 5 of her abdomen to one arm of the V and depositing eggs along down until the apex is reached, then changing the tip of her ab- domen to the outer part of the other arm of the V and placing eggs along down to the apex on this side. This process is kept up, the female changing regularly to the outer part of the opposite arm of the V each time the apex is reached. Between nine o'clock and noon seems to be the favor- ite time of day for oviposition with the various species of both Chrysops and Tabanus, and I have seldom been able to observe females ovipositing at other hours of the day. The eggs when first laid are clear white but eexdualliy get darker until they become permanently dark brown or black. Most of the eggs of Chrysops are deep black, and are placed in’ a single layer, but there are exceptions to this, for the egg of C. celer are never darker than brown, and are placed in at least three layers one upon the other. The color of eggs in Tabanus is variable between brown and black, and so far as I have observed, are always placed in convex masses composed of layers one upon the other. In sections of eggs just laid no great amount of development is. observable, and we therefore conclude that eggs are laid soon after they are fertilized. Temperature has its influence on the incubation period, and for this reason the length of time required for the hatching of Tabanid’s eggs can not be said to be exactly so many hours. For instance, it took eggs of Chrysops callidus five or six days to hatch, and it required about a day longer in the case where eggs were kept in the shade the whole time, than in cases where the eggs were in the sun during the daytime. Eggs of Tabanus stygius hatched in about seven days in each. of the two or three trials I gave them. In all species observed all the eggs of a single mass ‘hatch very near the same time, and the whole mass of wriggling larvee go tumbling down into the water together. Once in the water they separate and sink to the muddy bottom, where they conceal themselves so securely that they are not usually seen again until they appear as adults. Some- times there are a few eggs that are slow in hatching, and larvee from these come out and drop to the water singly or in small groups. LARVA AND PUPA. The larve of the different species of this: fermnily are very. much alike in appearance, except in size, consequently the full grown larvee of the small species are hardly distinguishable from -younger larve of the large species. They are tapering at each end, shining whitish in general color, and many of the larger specimens at least, are banded with dark brown or black. 6 OHIO STATE ACADEMY OF SCIENCE. The pupz shidietl are dull yellowish in color, with an en- circling row of spines or stiff hairs at the apical third of each abdominal segment. Characters for grouping the various species are located in the spiracles, and also in the denticles at the apex of the abdomen. When the larva is first hatched a certain amount of yolk is present in connection with the alimentary canal, and this furn- ishes it food for a time. The young larve of all the species studied in this stage possess the ‘burrowing habit, and whatever soft material, plant or animal, they can reach they at once bur-. row into. Consequently little opportunity is offered under nat- ural conditions for studying their habits and growth. The larve of many of the specimens probably remain in the water or in the mud very near the edge of the water throughout the existence of this stage for their pupze come to the surface of the ground a few inches from the edge of the water just before the. adults issue; and around fresh water ponds I have observed myriads of pupa skins of Chrysops with just the anterior ends projecting above the surface of the ground. There is a wide range of vari- ation in the habits of larvee of various species of Tabanus. Some are hatched in stagnant pools, some in ripples of streams and some in marshy eround. Some species live in water for a time and crawl out into dry ground; consequently one often finds Tabanid larve by digging in dry ground along the borders of ponds. Larve are easily reared if taken when nearly full grown, and appear to be as much at home in moist ground as in water. They eat small, soft-bodied invertebrates of many kinds, even their own species. We have kept them from fall until the following spring in small covered dishes filled with wet earth. Plenty of moisture was applied and earthworms from a greenhouse near by were given for food. In order to prevent one larva from eating another of its species, only one was kept in each dish. In a large number of trials only a few have died before reaching maturity. - Not much can be said regarding the length of time our species remain in the larval stage, but from circumstances one is led to believe that, in some cases at least, more than one year is consumed by this stage. At Sandusky, Ohio, in July, rgot, Tabanus stygius was very common, but in 1902, at the same place, only one or two specimens were seen. It may be that one can account for this difference on the ground of more than one year being required for the completion of the larval stage. FIELD HABITS OF THE ADULTS. The adults have many peculiar habits which the collector should know in order to become proficient in procuring speci- mens; and besides, some of these habits have an economic bear- ing also. The larval stage is passed in the water or at least in TABANIDA OF OHIO. a wet places, and where the larva attains its full growth, the change to the pupa of course takes place; and as the pupa cannot trans- port itself it is evident that most adults issue in the vicinity of water or marshy ground. The only exception to this I have noted is when the larva or pupa has been carried to remote places by high water. It is not an uncommon thing to meet with teneral specimens of various species clinging to grasses, reeds and other plants growing in wet ground, waiting for their wings to harden. At such times males and females are theoretically equal in numbers, and although not always as distinctly marked as older specimens, they are nevertheless desirable. The sexes of Chrysops may be procured thus when other efforts come to naught. _ As is well known only the females suck blood, and are there- fore the only sex that molests stock. The males procure their food from plants and consequently are to be looked for on flowers and foliage. In an endeavor to satisfy myself whether or not the females visit flowers, I have taken from various blossoms the past summer no less than half a dozen females of different species, but not in a single instance have I taken the male from animals. The statement appears in print that females visit flowers for food when they are compelled to do so, but it is probable that their visits to flowers are not necessarily compulsary on their part. It seems more plausible that these visits are made at times from choice. The females of Chrysops and some of the species of Tabanus come buzzing around the collector in numbers, and at such times may be taken easily with a net. The majority of the species of Tabanus in this region, however, are very active, and as they seldom alight on man for the purpose of sucking blood, not many are taken in the way just stated. During the time the female is ovipositing the male is often resting near by on the foliage. At Georgesville, Ohio, June 4th, I cbserved C. moechus ovipositing on foliage overhanging a mill race; soon after specimens of the male sex were observed resting on the upper leaves of the same plant on which the females were oviposing. In a few minutes collecting, a dozen or more spec- imens of each of the sexes were procured. The sexes of many species of Tabanus often alight on the bare ground of paths or roads that run through the woods. At Cincinnati, June 1oth, in company with Mr. Dury, we procured numbers of the sexes of different species resting on some fur- rows that were plowed around a woods to prevent the spread of fire. We also took the same species resting in paths and roads that ran through the woods. Some of these same species were 8 OHIO STATE: ACADEMY OF SCIENCE. also taken from the low growing foliage in sunny places among the trees. One of the best places I have ever found for taking the sexes of Tabanus and Chrysops is in the tall grass that skirts the marshes of Sandusky Bay. This grass is the Phragmites of botanists and grows to a great height. On July 6th, at Black Channel, when the wind was high, I went into a patch of this erass that was so dense that a net could not be used in it to ad- vantage. Here Tabanids were abundant, and it was found that by approaching them very carefully, specimens could readily be picked off with the fingers. The male and female of T. stygius, nivosus, C. moerens and brunneus and the male of T. affinis and bicolor were taken in this way. This same grass furnished ex- cellent collecting wherever found, but most material was pro- cured when the wind was high. On the same date and near the same place the male of C. brunneus was taken from the flowers of the common spatter-dock, and this and moerens were pro- cured by sweeping in the adjacent low-growing herbage. Tabanus sulcifrons is an abundant species in northern Ohio during the latter part of July and all of August, and a fine oppor- tunity for studying its mating habits has been presented. I have observed pairs of only two species of this genus in copulation, but so many pairs of sulcifrons have been noted in different years that it may be of value to record a few statements. All pairs have been observed before nine o’clock in the morning. On the 18th of last August I entered in my note book the following note: The day is clear and warm; T. sulcifrons abundant along the south side of a woods; between eight o’clock and half past eight several pairs observed copulating on the fence, and several pairs taken. The male in every instance clung to the edge of a rail, and the female with the legs and wings motionless and touching nothing hung suspended. The time occupied in making the observations on which this note is based was only a few minutes, considerably less than half an hour, and as I had been in the field where the species was abundant for some time previous and stayed for some minutes thereafter, and saw no pairs except as stated above, it would seem that the period for taking obser- vations on the mating habits of T: sulcifrons is not a long one, and perhaps accounts for the scarcity of printed statements re- garding this particular in our other species of the family. In an hour after these observations were taken hardly any speci- mens of either sex could be found in the vicinity. The statement is in print regarding Simulium, which genus is composed of species having blood sucking females, that “since females once gorged with blood do not and can not return, copu- TABANIDAS OF OHIO. 9 lation and deposition of eggs must take place very soon after emergence from the water. * A careful examination was made of the females of the pairs taken in copulation to see if there was any indication of their having taken food previously. In several cases the alimentary tract was found to be well filled with blood. Two pairs were preserved in formalin, and when dissected the digestive system of the female contained a quantity of hardened blood, which when treated with glacial acetic acid yielded hzmin crystals. Pangonia rasa, which is the only species of its genus so far taken in Ohio, has been found on flowers only. From what I have observed the female of this species has a special liking for flowers, for specimens have been taken from these when cattle were grazing near by at the time. Goniops chrysocoma appears to be a common species in the state, but I have never seen it around stock. The females have been taken most often in woods resting on foliage of both her- _baceous and woody plants. This sex may often be located by the noise made in vibrating the wings rapidly and striking the leaf at each downward stroke. Specimens have often been taken from dead leaves where the noise made is much louder than when the leaf is green. The males fly rapidly, and at intervals come to rest on low growing plants where they remain for a time ; then they take wing again and are away so rapidly that the eye cannot follow them. Males at rest are easily approached, and this sex has been taken about as often as has the female. Many, if not all, of the Tabanidz in both sexes have the habit of coming to the water, and lowering themselves to its surface, dip several times in succession, and then fly away to alight on the bank or disappear from sight altogether. Writers have said that this is done for the purpose of drinking, and that at each dip a small quantity of water is taken up by the proboscis. This habit has an economic bearing which will be discussed on another page of this paper. ANATOMY OF TABANUS SULCIFRONS MACQUART. Tabanus sulcifrons, on account of the ease with which nu- merous specimens can be procured, has been chosen for the sub- ject of a short study of anatomy. In this study it has been the aim to use names which are in most common usage by the more prominent dipterologists, but sometimes a choice of one of the many names that have been used fora single region is a rather difficult matter. zs Report U, S, Commissioner of Agriculture for 1886, 509. 1Oo OHIO STATE ACADEMY OF SCIENCE. In order to study certain parts closely and locate their boun- daries it is necessary to remove the vestiture which is most abund- ant on the face and sides of the thorax. Head of female. The anterior part of the head is largely occupied by the compound eyes which are brown in color, and each is crossed transversely by two narrow, slightly curved, green- ish or purplish bands. The antennae are located on the lower middle of the head, and each is composed of three segments of which the third bears near its base an angular prominence which may be called the upper angle or basal prominence of the third antennal segment. Also this segment is compound, being composed of five annula- tions of which the basal one is longer than the other four taken together. The front or frons, which is the region between the eyes. above the antennz is nearly of the same width throughout. The space just above the antennz, the subcallus, is pollinose in this species. Above the subcallus is the frontal callosity, which is naked and shining, and occupies nearly the whole width of the - lower part of the front. It is quadrangular in form, with a nar- row elongate extension upward from its superior side. The upper part of the front is the vertex, and the limit of the front above is the vertical margin. The face occupies the space bounded by the antennz, eyes and oral margin. The middle part 6f the face beneath the antennz is swollen, while on each side is a less elevated area known as the cheek. The lower part of the face passes to the oral margin and the proboscis. The part of the proboscis which is visible in nature is largely labium. The labium is grooved on the upper side, and into this groove the other mouth parts, with the exception of the palpi, are re- ceived. It may be likened to a sheath for the edges of the groove are extended and meet above, for at least a part of the length. Its distal part is furnished with an enlargement, the Jabella, which when the insect is taking food becomes a sucking disk. The mouth parts which are received into the groove of the labium consist of six stylets, which are light brown in color and otherwise resemble one another. If these be separated from the labium, the Jabrum may be seen farthest forward and just behind it the smaller hypopharynx. Next in order passing backwards are the mandibles lying side by side while the marillae the narrow- est of the mouth parts lie posterior to the mandibles. Each maxilla has attached to its base a large maxillary palp, which is composed of a shorter basal, and a larger and longer distal joint. These maxillary palps in their natural position are very promi- TABANIDA OF OHIO. IL nent, the proximal joint projects forward so that the large distal segment is carried before all the other mouth parts. The rear of the head is usually referred to simply as the occiput, near the middle of which the head is joined to the thorax, a narrow strip lying above this junction is sometimes referred to as the nape or cervix. The cervix in this species is quite ob- viously bounded by sutures. Head of male. The head is larger and approaches nearer to hemispherical than in the female. The eyes are continuous. for a long distance and thus the front is divided into two parts called the vertical and frontal triangles. The former is very small and is bounded above by the vertical margin and bears no ocelli or simple eyes in this species. The latter is limited below by the antenne and includes the subcallus. Because of the in- - creased size of the head the antennz appear to have their union higher up. The face in this sex is different than in the female. The sides. or cheeks are about in the same plane with the surface of the eyes while the median part is much depressed. The mouth parts also differ ; the mandibles are entirely lacking and some of the other parts are noticeably reduced. The second joint of the maxillary palp is smaller and shorter than in the female, and turns upward to lie against the face. The uppermost greenish band of the eye is abbreviated outwardly and just above it, next the frontal tri- angle, is the division between the lower area of small facets and the upper area of large facets of which the eye is composed. On the outer and upper margin of the eye the area of small facets is extended to where the, eye meets the verticle triangle. Thorax. The three primary divisions of the thorax are not easily separated, but the mesothorax comprises nearly all the space visible from above, including the posterior, somewhat triangular portion called the scutellum. The prothorax is small but is easily located from the fact that it bears the anterior pair of legs. A small lobe of the pro- thorax, easily distinguished by being lighter in color, is closely applied to each anterior corner, or humerus of the mesothorax. Lying between the attachment of the anterior leg and the hume- rus are two small prominences and just posterior to these lat- ter is the anterior thoracic spiracle which marks the beginning of a suture, the dorso-pleural suture, which passes backward through the attachment of the wings, and ends beneath the front edge of the scutellum. The dorso-pleural suture marks . the division between the superior and lateral parts of the mesothorax, known respectively 12. OHIO STATE ACADEMY OF: SCIENCE. as dorsun and pleura; at the sides of the middle of the dorsum is a suture, furcate below and obsolete above, the transverse suture. In Diptera it seems not to be definitely settled as regards the downward. extension of the pleura, but “the inferior surface of the thorax between the legs” has received the name of pectus. The metathorax is small and the metanotum, which is the part of it visible from above, may be seen beneath the scutellum, by viewing from behind. Passing toward the pectus on each side we observe a promi- nence called the lateral callosity of the metathorax. Behind the lateral callosities are located the poisers or halteres, and just be- neath them the posterior thoracic spiracles. The prothorax bears a ea of legs, the mesothorax a pair of legs and the pair of wings, and the metathorax a pair of legs and a pair of halteres. The legs are each composed of five sections; the coxa next the thorax, and following in succession the trochanter, femur, tibia and tarsus. Each tarsus contains five segments of which the last or fifth bears a pair of claws, a pair of pads or pulvillt beneath the claws, and between the pulvilli a single empodium, which is developed similar to the pulvilli. The prothoracic coxe are slightly more than half as long as the femora of these legs, while the cox of the other legs are very much shorter. There seems to be no notable difference between the legs of male and female except in the front feet where the male Class. pulvilli and empodii are much larger than the same parts in the female. By taking a specimen of Tabanus with its wings spread and following the’ posterior border of a wing toward the. body one finds yougaedl the base an incision, the avillary incision, between which and the scutellum are three membranous lobes. These in order are called alula, antitegula and tegula. The first, bordering the axilliary incision, is considered as a part of the wing proper, but the other two called te gulae when. taken together are usually considered as accessory. In closing the wing it is seen that the antitegula moves with the wing while the tegula, although joined with the antitegula is also securely joined with the thorax, remains practically stationary. . When the wing is closed the antitesula fits over the tegula and nearly hides it ‘from view. The halteres have their attachment beneath the tegula, therefore their basal parts are concealed, but the’ ee srelllon knobs are always visible. Wing.. Plate II shows the regions. and venation of 2 a swing of Tabanus stygius Say, and reference to the drawing will make it easy to locate them. TABANIDA, OF OHIO. 13 '' Many species of Tabanus have the wings entirely transpar- ent while others have dark areas which furnish distinctive char- ‘acters. In T. sulcifrons dark markings are located at the bifur- ‘cation of the third vein and along the veins at the discal end. of the discal cell;-when markings are: present on the wings of the warious species of Tabanus it is more common to find them where the third vein branches. and along the veins or parts of veins ‘which are most nearly transverse. Exceptions to this may be seen by reference to venustus and turbidus. Abdomen. The markings of the abdomen in this species consist of rather broad white triangles and white posterior mar- gins on most of the segments. These markings are formed by the color and arrangement of the vestiture, which consists of hairs-and dust or pollen. With a bristle brush the hair may be easily removed from a dry specimen, but on the same kind of a specimen the pollen is more persistent and therefore more read- ily removed by rubbing after it has been moistened. When all the vestiture has been removed the abdomen is: nearly a uniform brown all over and appears quite different than in a perfect specimen. Seven segments are visible to the anened eye. The circum- ference decreases from the second backward, and concealed by the seventh or smallest are what may be considered as three very much reduced additional segments, which are easily removed by the aid of a needle and which can only be differentiated satisfac- torily by the use of a microscope or strong lense. These segments besides being smaller are much modified in both sexes. In the female from ventral view, is visible a sclerite, ifraanal plate, which is interesting from a specific standpoint, and its form may be seen best by reference to Fig. 9, q. plate I. The claspers of the male are borne by the eighth segment, each of these are composed of two joints, which are movable; therefore they appear different in different specimens as may be acen by reference to the figures, plate I, Figs. 6 and to. MALES COMPARED WITH FEMALES. The males and females in the entire family are easily dis- distinguished from the fact that the former sex has the eyes con- tiguous and the latter has the eyes plainly separated. In all the species studied the male has the proboscis longer and slenderer, and the front feet larger than in the female. The palpi in the female point downward and the second segment is carried in front of the proboscis, while in the male they often turn upward and the second segment is carried against the face. Usually the males and females of the same species are easily associated, but in a number of species it is not an easy matter at least until they have been taken in the same locality in the field. 14 OHIO STATE ACADEMY OF SCIENCE. In Chrysops the apex of the wing, beyond. the cross- -band is marked the same in both sexes even though the. difference in coloration between the male and female is striking. This is notice- able in C. moechus in which the female is largely marked with yellowish while the male is entirely black. The base of the wings of the males of nearly all of the species of Chrysops have more black than do the females, and in some species like celer the . female has the sides of the thorax densely clothed with yellow pile while the same parts in the male are less densely clothed with black pile giving the two sexes a very different appearance. In the female of Tabanus stygius the dorsum of the thorax is clothed with white pollen, while in the male this is largely lacking, thus giving the sexes a very different appearance. The sexes of Goniops chrysocoma are notably different in appearance, because of the fact that the whole body is black in the male and light yellowish in the female. ARTIFICIAL REMEDIES. Various species of the family are very annoying to stock, but although their biting habits have been known for years no generally practical remedies have been suggested for their con- trol. Work horses may be protected by the use of fly-nets, and burlap blankets are often used on cattle and horses, but these blankets have their objectionable features, and it is doubtful if they come into general use in the near future. Kerosene emul- sion, carbolic acid, fish oil and a variety of substances have been ‘used, and beneficial results have been obtained from a number of them, but the benefits derived from a single application are of such short duration that to many their use is thought to be impracticable. The most valuable results in destroying horse flies were ob- tained by Porchinski in Russia, and are described by Howard in a paper published in Bulletin number 20, new series, of the U. S. Division of Entomology. The method employed consists in applying kerosene to the surface of stagnant water for the pur- pose of coming in contact with the adults when they come to drink. It may be added from my own observations that the same application is of consequence in killing larvze at the time they hatch and drop into the water. As the eggs of so many of our species are deposited over water and ‘the larve drop down into the water when they hatch, Tami of the opinion that more strik- ine results may be obtained from the use of kerosene on the stir- face of stagnant water in desteoyics aes them in Geonsey Cis adults. Tyke Monnet Y=’, TABANIDAS OF OHIO. ni NATURAL ENEMIES. Some years ago Hart reared a ngmenopterous parasite, Pan- urus tabanivorus, from the eggs of T. atratus.. This appears to be a common parasite, and I have reared more than a hundred specimens from a single cluster of eggs. It is very common to find clusters of eggs of both Tabanus and Chrysops more or less injured by being eaten into and some of the eggs destroyed. Various predaceous insects have been observed to be responsible for this condition of things. Around ponds where Tabanids are issuing many specimens fall a prey to predaceous insects of different orders. Tabanids fresh from the pupa case are not active and require time for their wings to harden before they fly readily. I have observed two species of Hemiptera, Limnobates marginatus and Phytocoris nubilis, preying upon teneral adults of “‘Chrysops callidus ; and E. B. Williamson has sent in teneral specimens of Chrysops vit- tatus taken from Mesothemis simplicicollis, one of our com- monest dragonflies. Robber flies of the family Asilidz, which appear to have no choice of species when capturing their prey, have occasionally been captured with specimens of Tabanus in their possession. A PARTIAL BIBLIOGRAPHY OF LITERATURE ON NORTH AMERICAN TABANIDZ PUBLISHED PREVIOUS TO OSTEN SACKEN’S PRO- DROME OF A MONOGRAPH OF THE TABANIDZE OF THE UNITED STATES. Bellardi, Luigi. 1. Saggio di ditterologia messicana. Two parts and Supplement; five plates. 1859-1862. Degeer, Baron Charles. a8 IVicmnoinres pour servir 4 l’Histoire des insectes. 7 volumes. 1752-88. Only the 6th volume contains descriptions of Tabanidae. Drury, Drew. 3. Illustrations of Natural History. London, 1770-82. Three volumes. (A new edition of this work was published in 1837, by Westwood, under the title of Illustrations of Foreign Entomology.) Fabricius, J. C. Systema Entomologiae. Flensburgi, 1775. Entomologia Systematica. 4 volumes. Hafniae, 1772-94; Supple- ment 1798. 6. Systema Antliatorum. Brusvigae, 1805. Forster, J. R. Novae Species Insectorum. Centuria I. London, 1771. oe 16 10. 17. 18. 1), 20. OHIO STATE ACADEMY OF‘ SCIENCE. Harris, Dr. Thaddeus W. . Catalogue of the Insects of Massachusetts. In Hitchcock’s Report on the Geology, Botany and Zoology of Massachusetts; second edition, 1835. ; ee Jaenicke, F. Neue exotische Diptern aus den Museén zu Frankfurt und Darm- stadt. In the Abhandl. d. Senckenb. Ges.. Volume 6,° with two plates. Also separately in one quarto volume of 100 pages. Frankfurt, 1867. Kirby, Will. Fauna Boreali Americana. Volume 4, 1837. Loew, Dr. H. Diptera Americae Septentrionalis indigena; parts 1-10, Part 8 contains the description of Pangonia pigra. Part 10 contains the description of Silvius gigantulus. Macquart, J. Histoire Naturelle des Dipterés, two volumes, 1834-35. Diptéres Exotiques nouveaux ou peu connus. Two volumes in five parts, five supplements and 186 plates. Paris, 1838-55. Palisot de Beauvois, A. M. F. J. Insectes recueillis en Afrique et en Amérique, etc. Paris, 1805-21. Say, Thomas. The Complete Writings of Thomas Say on the Entomology of North America. Leconte’s edition, two volumes, 1859. Walker, Francis. List of the Specimens of Dipterous Insects in the Collection of the British Museum; four parts and three supplements, 1848-55. Most of the Tabanidae are treated in the first part and the first supplement. Insecta Saundersiana, or characters of undescribed insects in the collection of W. W. Saunders—Diptera. Five parts, with eight plates by Westwood. London 1850-56. Westwood, J. O. Insectorum novorum exoticorum ex ordine dipterorum descriptiones. In the London and Edinburg Philosophical Magazine, 1835. Pangonia macroglossa is described. Wiedemann, -C. R. W. Aussereuropaische Zweifligelige Insecten. Two volumes, with plates. Hamm 1828-30. Diptera exotica. Kiliae 1821. THE MORE IMPORTANT PAPERS ON NORTH AMERICAN TABANIDA, 21. 22. BEGINNIGNING WITH OSTEN SACKEN’S PRODROME. Aldrich, J. M. A New Genus and Species of Tabanidae. Psyche, VI, 236, 1892. Goniops hippoboscoides is described. On page 246 of the same volume is a note stating that figure 3 on page 237 is printed upside down. Goniops and other Synonyms. Entomological News, XI, 531, 1900. 26. 27. 28. 34. 30. 36. aT. 38. 39. TABANIDAS OF OHIO. 17 Bigot, J. M. F. Diptéres nouveaux ou peu connus. Bulletin de la Societé Zoologique de France; XVI, 74-79, 1891. A synoptic table of the genus Haematopota. Diptéres nouveaux ou peu connus. Memoires de la Société Zoologique de France, IV, 408-419, 1891. A synoptic table of the genera of the family Tabanidae. Diptéres nouveaux ou peu connus. Memoires de la Société Zoologique de France, V, 602-691, 1892. Descriptions of 150 new species of Tabanidae. Coquillett, D. W. Papers from the Harriman Alaska Expedition, Diptera. Proceed- ings of the Washington Academy of Sciences, II. 389-464, 1900. Tabanidae, 406. New Orthorrhaphous Diptera from Mexico and Texas. Journal of the New York Entomological Society, X, 136-141, 1902. * Tabanidae, 137. Hart, Charles A. On the Entomology of the Illinois River and Adjacent Waters: family Tabanidae. Bulletin of the Illinois State Laboratory of Natural History, IV, 220-247, 1895. The Tabanidae known from Illinois with extensive notes on the life-history habits of many species. ine, Jas. 'S. - Pangonia chrysocoma Osten Sacken. Entomological News, XI, 392, 1900. Description of two new Species of Tabanus. Canadian Entomologist, XXXII, 247, 1900. Change of Name. Canadian Entomologist, XXXIII, 28, 1901. The name pruinosus changed to ohioensis. Collecting Tabanidae. The Ohio Naturalist, II, 147, 1901. Howard, L. O. A Remedy for- Gadflies, Porchinski’s Recent Discovery in Russia, with some American Observations. Bulletin 20, New Series, Division of Entomology, United States Department of Agricul— ture, page 24, 1899. The Insect Book. 1901. The Family Tabanidae is treated on pages 131-133. Several species are figured in plates XV and XVI. Johnson, Charles W. List of the Diptera of Jamaica with Descriptions of New Species. Proceedings of the Academy of Natural Sciences of Philadelphia, 1894, 272. List of the Species only. Diptera of Florida. Proceedings Academy Natural Sciences of Philadelphia, 1895, 321. List of Species. Insects of New Jersey. New Jersey State Board of Agriculture, 1899. Tabanidae pp. 639-642. Some Notes and Descriptions of seven new Species and one new Genus of Diptera. Entomological News, XI, 323-328, 1900. _ Therioplectes politus is described on page 325. Kertész, Dr. Colomannus. Catalogus Tabanidarum Orbis Terrarum Universi. Edited by the Hungarian National Museum, Budapest, 1900. 43. 44, 48. 49. OHIO STATE ACADEMY OF SCIENCE. Marten, John. New Tabanidae. Canadian Entomologist, XIV, 210-212, 1882. New Tabanidae. Canadian Entomologist, XV, 110-112, 1883. Osborn, Herbert. Insects affecting Domestic Animals, Bulletin No. 5, New Series, Division of Entomology, U. S. Department of Agriculture, page 58-71, 1896. An Economic Account. -Osten Sacken, Charles R. Prodrome of a Monograph of the Tabanidae of the United States. Memoires of the Boston Society of Natural History, Part -l. The Genera Pangonia, Chrysops, Silvius, Haematopota and Dibasis; volume II, 365, 1875. Part Il, The Genus Tabanus; volume II, 421, 1876. Part III, Supplement; volume II, 555, 1876. Western Diptera. Descriptions of New Genera and Species of Diptera from the region west of the Mississippi River and especially from California. Bulletin of the United States Geological and Geogra— phical Survey of the Territories. Volume III. Tabanidae pp. Pig 23. UST Catalogue of the Diptera of North America. Smithsonian Miscellan— eous Collections No. 270, 1878 Tabanidae pp. 52-62 and 225-229; notes 64-90. Diptera. Biologia Centrali Americana, I, Tabanidae pp. 43-60, 1886. Ricardo, Miss Gertrude. Notes on the Pangoninae of the Family Tabanidae in the British Museum Collections. Annals and Magazine of Natural History, series 7, volume V, pp. 97-121, 1900. Series 7, volume V, pp. 167-182, 1900. Series 7, volume VIII, pp. 286-315, 1901. Series 7, volume 1X, pp. 366-381, 1902. Riley, Charles V. Noxious, Beneficial and other Insects of the State of Missouri. Second Annual Report, pp. 128-132. The immature stages of Tabanus atratus. Slossen, Anna T. Mrs. List of Insects taken in Alpine Region of Mount Washington. Ento- mological News, V, 1; VI, 4; VI, 316; VII, 262; VIII, 237; IDG) BRIS OIE, Bile OSU, 4b3 SNC, ailiB), Townshend, C. H. Tyler. Contributions to the Dipterology of North America, I]. Tabanidae, Conopide Tachnidae, ete. Transactions of the American Ento— mological Society, XXII, 55-80, 1895. Tabanidae, pp. 56-60. The Diptera of Baja California. Proceedings of the California Academy of Sciences, Series II, volume IV, pp. 593-620, 1895, Tabanidae, pp. 595-598. On the Horse-flies: of New Mexico and Arizona. Transactions of the Kansas Academy of Sciences, 1894, 133-135. On a Collection of Diptera from the Lowlands of the Rio Nautla in the State of Vera Cruz, Mexico. Annals and Magazine of Natural History, Series 6, volume 19, 1897. Tabanidae 18-19. Series 6, volume 20, 1897. Tabanidae pp. 21-23. pais 59. 68. 69. TABANIDA OF OHIO. 19 Diptera from the Headquarters of the Gila River. Psyche, VIII, 1897. Part I, Tabanidae 38-40. Part II, 92-93. Diptera from the Mesilla Valley of the Rio Grande, New Mexico. Psyche, VIII, 147, 1897. Diachlorus guttatulus is a Tabanus. Diptera from Yucatan and Campeche. The Canadian Entomologist, XXIX, 197-199, 1897. Some Characteristic Maritime Diptera from the South End of Padre Island and the Adjacent Texas Coast. Entomological News, IX, 167-169, 1898. Diptera from the Lower Rio Grande or Tamaulipan Fauna of Texas. Journal of the New York Entomological Society, VI, 50, 1898, Whitney, C. P. Descriptions of some new species of Tabanidae. Canadian Entomolo- gist, XI, 35, 1879. Six new species described. Williston, Samuel Wendell. Some interesting new Diptera. “Transactions of the Connecticut Academy of Arts and Sciences, IV, 243-246, 1880. Two new species of Tabanidae described on pages 244-246. - Collecton and Preservation of Diptera. Psyche, IV, 130-132, 1884. Diptera. Standard Natural History, II, 416-417. 1884. On the Classification of North American Diptera. Entomologica Americana. Volume 1, 10-11 and 12-13, 1885. Synoptic table to genera of North American Tabanidae and Description of Apato- lestes comastes, new genus and species. Synopsis of the Families and Genera of North American Diptera, pp. 1-84, 1888. Notes and Descriptions of North American Tabanidae. Transactions of the Kansas Academy of Science, X, 129-142. 1888. This paper is supplementary to Osten Sacken’s Prodrome. On the Diptera of St. Vincent. Transactions of the Entomological Society of London. 1896, pp. 253-446. The Tabanidae, 302-303. A list of species of Diptera from San Domingo. Canadian Entomolo- gist, XXV, 170-171. 1893. Manual of the Families and Genera of North American Diptera. 1896. Published by J. T. Hathaway, New Haven, Connecticut. Tabanidae. Biologia Centrali Americana. Supplement to volume I, pp. 252-264, 1901. CATALOGUE OF TABANIDA® FROM AMERICA NORTH OF MEXICO. The following catalogue is presented for the purpose of giv- ing the distribution, synonymy and bibliography of the species from America north of Mexico. A few species not yet reported from north of the Mexican boundary are included, but southern species are added to our fauna from time to time and it is likely many others will be added from Mexico when extensive collec- tions can be secured from our southern states. The bibliography does not include all references but only such as are of value in characterizing or extending the range of the species given. 20 OHIO STATE ACADEMY OF SCIENCE. Names in italics are synonyms of the one in Roman above. There are many other synonymous names in the list but evidence at hand is not sufficient to locate them. The names that have been proposed for our species are brought together as a basis for future work. Many of the types of the older students of the family are not in existence at the present time, and it is likely that later stu- dents have sometimes redescribed their species under other names ; so it is no small task to solve present problems in a satisfactory way. There are a few names in older works given to species with habitat unknown; some of these names may have been given to specimens from this region. Such names, and.a few others ex- cluded for other reasons, are not given in the list which follows. cHrysops Meigen. Illiger’s Magazine II, 367, 1803. brunneus Hine. Described in this paper. Habitat; Sandusky, Ohio. callidus Osten Sacken. Prodrome I, 379, 1875. Williston, Trans. Kan. Neach OX, IsP) Telalomietes IN. (C., IDL C., Mick, ©., liad, IN Jc, Dell. Conn., Mich., Ills., Fla. cearbonarius Walker. List I, 203, 1848. Ricardo, Ann. Mag. Nat. Hist., Sera (Ville 303) dlabitate Mee Ne Et Massa. "Coley Wivor Caneda, IN. J. : : miger Walker (not Macq.). List I, 202, 1848. provocans Walker. Dipt. Saund. I, 73, 1850. (?) atra Macquart. Dipt. Exotic Susp. 4, 40, 1850. fugax Osten Sacken. Prodrome I, 375, 1875. Williston, Trans. Kan. Acade, Xe Is2: celer Osten Sacken. Prodrome I, 376, 1875. Habitat; Me., N. C., Ohio, Mass., N. J. (?) cincticornis Walker. List I, 201, 1848. Ricardo, An. Mag. Nat. Hist., Ser. 7, VIPI, 302: ceras Townsend. Psyche VIII, 38, 1897. Habitat; N. M. coloradensis Bigot (in part). Mem. Soc. Zool. Fr. V, 605, 1892. Ri- cardo, Ann. Mag. Nat. Hist., Ser. 7, VIII, 397. Habitat; Colo- rado. cuclux Whitney. Can. Ent. XI, 35, 1879. Habitat; N. H., Me., Pa. cursim Whitney. Can. Ent. XI, "36, 1879. Williston, Trans. ‘Kan. Acad. X, 134. Habitat; N. iL. delicatulus Osten Sacken. Prodrome I, 380, 1875. Habitat; N. H., Me. discalis Williston. Trans. Conn. Acad. IV, 245, 1880. Habitat ; Wyo., Col. divisus Walker. List I, 204. 1848. Ricardo, Ann. Mag. Nat. Hist., Ser. 7, VIII, 303. ‘Habitat; Fla. atropos Osten Sacken. Prodrome I, 872, 1875. excitans Walker. Dipt. Saund. 72, 1850. Osten Sacken, Prodrome I, S73 Elabitate, View) IN@ Eine bane \Velsh pin @eseallllise facialis. Townsend. Psyche VNU) 39, 1897. Habitat; N. M. ie fallax Osten Sacken. Prodrome I, 392, 1875. Habitat ; Mass., N. Y., Del., N. J., Md., Ohio. TABANIDA OF OHIO, 21 flavidus Wiedeman. Dipt. Exot. I, 195, 1821. Auss. zweifl. Ins. I, 199. Osten Sacken, Prodrome I, 385. Habitat; Md., N: J., D. C., IMGigs., Ni. Cs, iFlla., Olnie, canifrons Walker. List I, 197, 1848. pallidus Bellardi. Saggio I, 73, 1859, pl. II, fig. 16. frigidus Osten Sacken. Prodrome I, 384, 1875. Prodrome II, 474. lelaioniaies IN, Isl, IN Wo, Wash., Ohio, British Possessions. fulvaster Osten See Western Dipt. 221, 1877. Ricardo, Ann. Mag. Nat. Hist., Ser. 7, VIII, 306. Habitat; Col., Utah, Wyo., Ariz., N. M., Montana. coloradensis Bigot (in part). Mem. Soc. Zool. Fr. V, 605, 1892. furcatus Walker. List I, 199, 1848. Osten Sacken, Prodrome I, 391 Ricardo, Ann. Mag. Nat. Hist., Ser. 7, VIII, 302. Habitat; N. Y., Hudson Bay. hilaris Osten Sacken. Prodrome I, 391, 1875. Habitat; Me., N. H., N. Y., Canada. indus Osten Sacken. Prodrome I, 383, 1875. Habitat; N. Y., N. J., Canada, Ohio. lugens Wiedeman. Dipt. Exot. I, 109, 1821. Auss. Zw. 1, 212. Habitat; OlmiO, Ital, Ie C., (Gas, ills, IN. Ie morosus Osten Sacken. Prodrome I, 889; Il, 474, 1875. (?) trinotatus Macquart. Dipt. Exot. I, pt. 1, 161, 1838. mitis Osten Sacken. Prodrome I, 374, 1875. Habitat; Washington. moechus Osten Sacken. Prodrome I, 387, 1875. Habitat; N. J., D. C., Ills., Ohio, Ky. moerens Walker. List I, 201, 1848. Ricardo, Ann. Mag. Nat. Hist., Ser. 7, VIII, 302. Habitat; Ills., N. D., Wis., Ohio. aestuans van der Wulp. Tijd. Ent. X, 1385, 1867 pl. III, fig. 8 and 9. Osten Sacken, Prodrome I, 378. montanus Osten Sacken. Prodrome I, 382, 1875. Townsend, Tr. Am. Ent. Soc. XXII, 57. Habitat; D. C., Mich (Ola, IN, Wo, IWhlses Nita Nie niger Macquart. Dipt. Exot. I, 161, 1838. Walker, List I, 202; List V, 282. Osten Sacken, Prodrome J, 377. van der ‘Wulp, Tid., Ento. XXIV, 161. Townsend, Tr. Am. Ent. Soc. XXII, 57. inabitat-apa we Vlier Nel Cahenn vias Olio CanadaeiN ie carbonarius Walker (in part). List I, 203, 1848. . nigribimbo Whitney. Can. Ent. XI, 36, 1879. nigripes Zetterstedt. Insecta Lapponica it, 519, 1840. Loew, Vehr. Zooi. Bot. Ges. VIII, 336. Osten Sacken, Prodrome I, 394. Coquillett, Wash. Acad. Sci. II, 406. Habitat ; Lapland, Sitka. noctifer Osten Sacken. Western Diptera 220, 1877. Habitat; California. obsoletus Wiedeman. Dipt. Exot. I, 108, 1821, Auss. Zweifl. Ins. I, : 211. Osten Sacken, Prodrome I, 393. Habitat; Md., D. C., N. C., Ks., Me., N. J., Mass., ‘Ohio pachycerus Williston. Tr. Kan. Ac. Sei, XG 134, 1887. Habitat; Cali- fornia. pertinax Williston. Tr. Kan. Ac. Sci. X, 182, 1887. Ricardo, An. Mag. Nat. Hist. Ser. 7; VIII, 307. Habitat; Cal., Washington. ~ migriventris Bigot. Mem. Soc. Zool. Fr. V, 604, 1892. Damzeas Wiedeman. Auss. zweifl. Ins. I, 210, 1828. Osten Sacken, Prodrome I, 393. Ricardo; Ann. Mag. Nat. Hist. Ser. 7, VIII, 301. Habitat: Fla., Ga., N. J.,. Conn. fuliginosus Wiedeman. -Dipt. Exot. I, 109, 1821. Auss. zweifl. Ins. 210. : ) 22 OHIO STATE ACADEMY OF SCIENCE. proclivis Osten Sacken. West. Dipt. 222, 1877. Ricardo, Ann. Mag. Nat. Hist. Ser. 7, VIII, 306. Habitat; Cal., Wash., Col., Oregon. atricorms Bigot. Mem. Soc. Zool. Fr. V, 603, 1892. pudicus Osten Sacken. Prodrome I, 381, 1875. Prodrome II, 474. Wil- liston, Tr. Ks. Acad. Sci. X, 1384. Habitat; Mass., N. Y., N. J., INS Gi, lke: sackeni Hine. Described in this paper. Habitat; Sandusky, Ohio. sepulchralis Kirby (not Fabricius). Fauna Bor. Am. Ins. 314, 1887. Osten Sacken, Catalogue 1878, 54. sequax Williston. Tr. Kas. Acad. Sci. X, 133, 1887. Habitat; Kansas. sordidus Osten Sacken. Prodrome I, 376, 1875. Williston, Tr. Ks. Acad. Sci. X, 131. Ricardo, An. Mag. Nat. Hist. Ser. 7, VIII, 305. Habitat; White Mts., N. H., British Possessions. striatus Osten Sacken. Prodrome I, 391, 1875. Habitat; Ill., D. C., N. J., Mexico, Ohio. vittatus Bellardi (not Wiedeman). Sag. Ditt. Mess. I, 74, 1859. surdus Osten Sacken. West. Dipt. 223, 1887. Williston, Tr. Ks. Acad. Se. X, 134. Habitat; California. univittatus Macquart. Dipt. Exot., supl. 5, 36, 1855. Osten Sacken, IProxabrorane It) GI» lakes Ia. IN, Ci, Ikal, IMIGk, IN. Je, lls. Ohio, Fla. i (?) fascipennis Macquart. Hist. Nat. Dipt. I, 216, 1834. Walker, List i, O05 Gere). “Ibis WW, 2elsh vittatus Wiedeman. Dipt. Exot. I, 106, 1821. Auss. zweifl. Ins. I, 200. Macquart, supl. 5, 37. Osten Sacken, Prodrome I, 390. Towns-— end). jabt Am. Ents) Soc XOX Imola: nicandon a wayenl\viaganeN ats Hist. Ser. 7, VIII, 300. Habitat; Eastern North America, as far west as Kansas and Iowa. areolatus Walker. List I, 197, 1848. lineatus Jeannicke. Neue Dipt. Exot. 26, 1868. PANGONIA Latreille. Hist. Nat. des Crust. et des Ins. III, 1802. californica Bigot. Mem. Soc. Zool. Fr. V, 618, 1892. Habitat; Cal dives Williston. Tr. Ks. Acad. Sci. X, 130, 1886. Habitat; California. fera Williston. Tr. Ks. Acad. Sci. X, 130, 1886. Habitat; Mt. Hood, Oregon. hera Osten Sacken. West. Dipt. 214, 1877. Habitat; San Francisco, Cal. incisa Wiedeman. Auss. zweifl. Ins. I, 90, 1828. Habitat; Ark., Col., N. M., Oklahoma. incisuralis Say, Jr. Ac. Nat. Sc. Phil. II], 31, 1823; Compl. Writings, 5 Ue isabellina Wiedeman. Auss. zweifl. Ins. I, 112, 1828. Osten Sacken, Catalogue 1878, 225, Habitat; North America. macroglossa Westwood. Lond. Edinb. Phil. Mag. 1835. Osten Sacken, Prodrome I, 368, 1875. Habitat; Georgia. : pigra Osten Sacken. Prodrome I, 367, 1875. Habitat; N. Y., N. J., Ky., Fla. rasa Loew. Dipt. Am. sept. ind. pt. 8, no. 7, 1869. Osten Sacken, Pro- drome I. (366.. ‘Habitat; Mills Wiss) ND IWNe key Conny Ohio: ruficornis Bigot. Mem. Soc. Zool. Fr. V, 615, 1892. Habitat; California. saussurei Bellardi. Saggio Ditt. Mess. I, 49, 1859. Habitat; Southern Arizona, Mexico. seminuda Coquillett, Jr. N. Y. Ene. Soc. X, 187, 1902. Habitat; Mexico, -TABANIDA, OF OHIO. 23 tranquilla Osten Sacken. Prodrome I, 367, 1875. Habitat; Penn., Mass., IN, Jal,, Ceiczica, velutina Bigot. Mem. Soc. Zool. Fr. V, 615, 1892. MHabitat; California. Gontops Aldrich. Psyche VI, 236, 1892. chrysocoma Osten Sacken. Prodrome I, 368, 1875. Hine, Ent. News Ne O2e Nidnicha nt sNews elewoslenetlabitatey Nie Yeo uNe je. Del., Pa., Ohio, Fla. hippoboscoides Aldrich. Psyche VI, 236, 1892. sILvius Meigen. Syst. Beschr. europ. zwei. Insecten III, 27, 1820. gigantulus Loew. Dipt. Am. Sept. ind. pt. 10, no. 12, 1872. Osten Sacken, West. Dipt. 215; Catalogue 1878, 226. Habitat; Cal., Wash., B. C., N. M., Col. trifolium Osten Sacken. Prodrome I, 395, 1875. pollinosus Williston. Tr. Conn. Ac. IV, 244, 1882; Tr. Ks. Ac. Sc. X, 131. Habitat; Kan., Col. quadrivittatus Say, Jr. Ac. Phila. III, 33, 1823; Compl. Writ. II, 54. Wiedeman, Auss. zweifl. Ins. I, 200. Osten Sacken, Catalogue 1878, 226. Williston, Tr. Ks. Ac. Sc. X, 131. Habitat; Cal., Neb., N. M. APATOLESTES Williston. Entom. Americana I, 12, 1885. comastes Williston. Entom. Amer. I, 12, 1885. Townsend, Tr. Ks. Ac. Sc. XIII, 134. Habitat; N. M., Cal. eisenit Townsend.. Pr. Cal. Ac. Sce., Ser. 2, IV, 596, 1895. WHabitat; San Jose del Cabo, Lower California. HMATOPOTA Meigen. Illig. Magaz. II, 267, 1803. americana Osten Sacken. Prodrome I, 395, 1875. Habitat; Dakota, Mont., Col., Br. Col., Cal. punctulata Macquart. Dipt. Exot. I, pt. 1, 163, 1838. Habitat; Carolina, IDV ele dNG og ise IE DIACHLORUS Osten: Sacken. Prodrome II, 475, 1876. ferrugatus Fabricius. Syst. Antl. 111, 1805. Wiedeman, Dipt. Exot. 1, 94; Auss. zweifl. Ins. 186. Walker, List I, 191; V, 148. Osten Sacken, Prodrome I, 396; Biol. Cent. Am. I, 57. Habitat; Fla., Mexico. americanus Palisot de Beauvois. Ins. Dipt. 222, tab. 3, fig. 6. approximans Walker. List I, 198. i - ataenia Macquart. Dipt. Exot. I, pt. 1, 152. Walker, List V, 271. convergens Walker. List I, 198... rondanu Bellardi. Saggio Ditt. Mess. I, 68, tab. 2, fig. 11. haematopotides Bigot. Mem. Soc. Zool. Fr. V, 624, 1892. Habitat; Washington. 2 ! notatus Bigot. Mem. Soc. Zool. Fr. V, 623, 1892. Habitat; California. 24 OHIO STATE ACADEMY OF SCIENCE. ’ TABANUS Linne. Fauna Suecica .1761. abdominalis Fabricius. Syst. Antl. 96, 1805. Palisot de Beauvois, Ins. 101, tab. 2, fig. 4. Osten Sacken, Prodrome II, 434; Supplement Dole midabitat | Key Gas, lay. Mass kiss ind Sissies Nee actaeon Osten Sacken. Prodrome II, 448, 1876. Habitat; Mass., Conn., Min.. Wis., Canada. acutus Bigot. Mem. Soc. Zool. Fr. V, 660, 1892. Habitat; La. aegrotus Osten Sacken. Western Diptera 219, 1877. Habitat; Cal., Washington. affinis Kirby. Faun. Bor. Am. IV, 313, 1837. Osten Sacken, Prodrome Il, 466. Habitat; northern U. S. and Canada from the Atlantic to the Pacific, N. Ve triligatus Walker. List V, 1838, 1854. allynii Martin. Can. Ent. XV, 110, 1883. Habitat; North Carolina. americanus Forster. Nov. Spe. Ins. Cent. I, 100, 1771. Osten Sacken, Prodrome II, 457. Habitat; eastern N. Am. limbatus Palisot de Beauvois. Ins. 54, tab. 1, fig. 2, 1807. plumbeus Drury. Ins. I, tab. 44, fig. 2. ruficormis Fabricius. Syst. Ent. 789; Ent. Syst. IV, 365. annulatus Say. Jr. Acad. Phil. III, 32, 1823; Compl. Writ. II, 53. Osten Sacken, Supl. to Prodrome 555. Habitat; Mo., Ky., Ga., Ks., Wak aA astutus Osten Sacken. Prodrome II, 471, 1876. Townsend Tr. Am. Ent. Soc. XXII, 57. Habitat; Me., N. H., N. Y., Conn. atratus Fabricius. Syst. Ent: 789, 1775; Ent. Sys. IV, 366. Bellardi, Saggio, Ditt. Mess. I, 58. Osten Sacken, Prodrome II, 454. Habitat; eastern N. Am. miger Palisot de Beauvois. Ins. Dipt., tab. 1, fig. 1. americanus Drury. Ins. I, tab. 44, fig. 3. validus Wiedeman. Auss. zwei. I, We. baal Townsend. Tr. Am. Ent. Soc. SOUL, 58, 1895. Habitat; Virginia. bicolor Wiedeman. Dipt. exot. I, 96, 1821; "Auss. zweifl. Ins. I, 188. Osten Sacken, Prodrome Il, 460. Habitat; ING M5 NIGh, JE. Ohio, Ills., Canada, N. J. ruficeps Macquart. Dipt. Exot., Supl. 5, 35, 1855. fulvescens Walker. List I, 171, 1848. Osten Sacken, Prodrome II, 460; Catalogue 1878, 229. calens Linne. Syst. Nat. Ed. XII, II, 1000. Fabricius, Ent. syst. IV, 364. Habitat; N. America. californicus Martin. Can. Ent. XIV, 210. Habitat; California. captonis Martin. Can. Ent. XIV, 211, 1882. Habitat; California. carolinensis Macquart. Dipt. Exot. I, pt. 1, 145, 1838. Osten Sacken, Catalogue 1878, 226. centron Martin. Can. Ent. XIV, 211, 1882. Habitat; Colorado. cerastes Osten Sacken. Prodrome I, 462, 1876. Habitat; Ky., Wis. hirtioculatus Macquart. Dipt. Exot. Supl. 5, 33, 1855. Osten Sacken, Catalogue 1878, 227. centron Marten. Can. Ent. XIV, 211, 1882. Habitat; Colorado. cinctus Fabricius. Ent. Syst. IV, 366, 1775. Osten Sacken, Prodrome II, 464, 1876. Habitat; Atlantic States. cingulatus Macquart. Dipt. Exot. I, pt. 1, 144, 1838. Habitat; N. America. TABANIDA OF OHIO. 25. coffeatus Macquart. Dipt. Exot. Supl. 2, 23, 1846. Osten Sacken, Pro- drome II, 441. Habitat; D. C., Del., IN, S55 Ulla, lass. lhngl Fla., N. J. (?) nigripes Wiedeman. Dipt. exot. 1, 75, 1821; Auss. zwei. I, 142. comastes Williston. Tr. Ks. Acad. X, 137, 1886. Townsend, Tr. Am. EntySoc) exch) 58, 1895.“ Habitats) Wash:;Or:, Col, Col: comes Walker. List IV, 1152. Habitat; N. Y., Hudson Bay. inscitus Walker. List I, 172. confusus Walker.. List I, 147. Habitat; N. America. conterminus Walker. Dipt. Saund. 24. Habitat; N. America. costalis Wiedeman. Auss. zweif. Ins. I, 173, 1828. Osten Sacken, Pro- drome, II, 450. Habitat; eastern N. America. baltimorensis Macquart. Dipt. exot. Supl. 5, 34, 1855. vicarius Walker. List I, 187, 1848. cymatophorus Osten Sacken. Prodrome II, 444, 1876. Habitat; Ky. derivatus Walker. List I, 151. Habitat; N. America. dodgei Whitney. Can. Ent. XI, 37, 1879. Habitat; Kan., Neb. dorsonotatus Macquart. Dipt. exot. Supl. 2, 22, 1846. Habitat; Carolina. duplex Walker. List V, 173, 1854. Habitat; Hudson Bay Territory. imitans Walker. List I, 173, 1848. endymion Osten Sacken. Prodrome Supl., 556, 1876. Habitat; Georgia. epistatus Osten Sacken. Prodrome Supl. 555, 1876. Habitat; Hudson Bay Territory, N. J. socius Osten Sacken. Prodrome II, 467. exul Osten Sacken. Prodrome Supl. 557, 1876. Townsend, Tr. Am. © Ent. Soc. XXII, 60 (var?). Habitat; eastern U. S. abdominalis Wiedeman (not Fabr.). Dipt. exot. I, 65; Auss. zweif. Ins. I, 116. ferrugineus Palisot de Beauvois. Ins. 221, tab. 3, fig. 2. flavipes Wiedeman. Auss. zweif. Ins. I, 1387, 1828. Osten Sacken, Prodrome II, 462. Habitat; Labrador. fratellus Williston. Tr. Ks. Acad. X, 140, 1888. Habitat; Washington. frenchii Martin. Can. Ent. XV, 111, 1888. Habitat; Montana. fronto Osten Sacken. Prodrome II, 431, 1876; Catalogue 1878, 228. Habitat; Car., Texas., Fla: (2?) cheliopterus Rondani. Nuovi. Annali. d. Sc. di. Bologna, 1850, 192. Osten Sacken, Prodrome II, 473; Catalogue 1878, 228. fulvofrater Walker. List I, 181, 1848. Habitat; Ills. fulvulus Wiedeman. Auss. zweifl. Ins. I, 153, 1828. Osten Sacken, Prodrome II, 451. Habitat; Ky., Md., N. C, N. J. fur Williston. Tr. Ks. Acad. Sci. X, 139, 1888. Habitat; Florida. fuscipalpis Bigot. Mem. Soc. Zool. Fr. V, 681, 1892. Habitat; Wash. fuscopunctatus Macquart. Dipt. exot. supl. 4, 34, 1849. Osten Sacken, Prodrome II, 482; Supl. 559; Catalogue 1878, 228. Habitat; S; Gar, Ga., ma, imitans Walker. List I, 146, 1848. giganteus DeGeer: Ins. VI, 226, tab. 30, fig. 1. Osten Sacken, Prodrome II, 458. Habitat Middle States and South Atlantic States. bicolor Macquart. Dipt. exot. supl. 2, 21. caesiofasciatus Macquart. Dipt. exot. supl. 5, 32. lineatus Fabricius. Spec. Ins. II, 455; Ent. Syst. IV, 363; Syst. Antl. 94. gilanus Townsend. Psyche VIII, 92, 1897. Habitat; N. Mexico. gracilis Wiedeman. Auss. zweif. Ins. I, 156, 1828. Osten Sacken, Cata- Cee: 228. Williston, Tr. Ks. "Acad. Sci. X, 140. Habitat ; a., Fla 26 OHIO STATE ACADEMY OF SCIENCE. guttatulus Townsend. Tr. Ks. Acad. Sci. XIII, 134, 1892; Psyche VIII, 147. Habitat; Las Cruces, N. M. haemaphorus Marten. Can. Ent. XIV, 210, 1882. Habitat; California. hirtulus Bigot.. Mem. Soc. Zool. Fr. V, 641, 1892. Habitat; Washington. illotus. Osten Sacken. Prodrome II, 469, 1876. Habitat; Canada. incisus Walker. Dipt. Saund. 26, 1856. Habitat; N. America. S insuetus Osten Sacken. West. Dipt. 219, 1877. Habitat; California, Alaska, Wash., Col. intensivus Townsend. Psyche VIII, 93, 1897. Habitat; N. Mexico. intermedius Walker. List I, 173, 1848: Habitat; Hudson Bay Territory. lasiophthalmus Macquart. Dipt. exot. I, pt. 1, 143, 1838. Osten Sacken, Prodrome II, 465. Habitat; eastern N. America, Columbia, Chile. notabilis Walker. List I, 166, 1848. punctipennis Macquart. Dipt. exot. Supl. 2, 23. Osten Sacken, Pro- drome II, 473. leucomelas Walker. List I, 175, 1848. Habitat; Georgia. leucophorus Bigot. Mem. Soc. Zool. Fr. V, 640, 1892. Habitat; Oregon. lineola Fabricius. Ent. Syst. 1V, 369; Syst. Antl. 102. Osten Sacken, Prodrome II, 448, 1876; Biol. Cent. Amer. I, 56. Habitat; east— ern N. America. (2?) scutellaris Walker. Dipt. Saund. 27, 1856. simulans Walker. List I, 182, 1848. trilineatus (Latr.?) Bellardi. Saggio Ditt. Mess. I, 63. longus Osten Sacken. Prodrome II, 447, 1876; Supplement 559. Habi- tats Kiss. ©. \Ky-2) Billa N. lugubris Macquart. Dipt. exot. I, pt. if 145, 1888. Osten Sacken, Prov drome II, 456. Habitat; South Carolina. ater Palisot de Beauvois. Ins. Dipt. tab. 2, fig. 5. Wiedeman, Dipt. exot. I, 74; Auss. zw. In. 1, 136. ‘maculifer Bigot. Mem. Soc. Zool. Fr. V, 641, 1892. Habitat; Wash. ‘maculosus Coquillett. Jr. N. Y. Ent. Soc. X, 1388, 1902. Habitat; Mexico. ‘marginalis Fabricius. Syst. Antl. 99, 1805. Osten Sacken, Prodrome Il, 472. Habitat; N. America. maritimus Townsend. Ent. News IX, 167, 1898. Habitat; Texas. megerlei Wiedeman. Auss. zwei. Ins. I, 132. Osten Sacken, Prodrome II, 457. Habitat; Florida. melanocerus Wiedeman. Auss. zwei. Ins. I, 122. Osten Sacken, Pro- drome II, 440. Habitat; Atlantic States from New Jersey south. (?) exaestuans Linne. Syst. Nat. Ed. XII, II, 1000. Degeer, Ins. VI, 229, tab. 30, fig. 5. Fabricius, Ent. Syst. 1V, 364; Syst. Antl. 96. Osten Sacken, Prodrome Il, 441. ‘melanorhinus Bigot. Mem. Soc. Zool. Fr. V, 642, 1892. Habitat; Wash. ‘mexicanus Linne. Syst. Nat. Ed. XII, II, 1000. Fabricius, Spec. Ins. II, 457; Ent. Syst. IV, 367; Syst. Antl. 98. Wiedeman, Dipt. exot. I, 76; Auss. zwei. Ins. I, 147. Macquart, Dipt. exot. I, pt. 1, 148. Walker, List V, 215, 259. Bellardi, Sag. Ditt. Mess. , 1, 59. Osten Sacken, Prodrome II, 459; Biol. Cent. Amer. I, 56. Habitat; southern U. S., Mexico, S. America, N. J. flavus Macquart. Hist. Nat. Dipt. I, 200. imans Fabricius. Ent. Syst. IV, 368. ochroleucus Meigen. Syst. Beschr. II, 62. olivaceus Degeer. Ins. VI, 230, tab. 30, fig. 6. punctatus Fabricius. Ent. Syst. IV, 368. — sulphureus Palisot de Beauvois. Ins) 222) tabs fig b: virdifavus Walker. Newman Zoologist VIII, Append, LXVI. TABANIDA OF OHIO. OF (var)limonius Townsend. An. Mag. Nat. Hist. Ser. V1, XX, 21. Habi- - tat; Mexico. microcephalus Osten Sacken. Prodrome II, 470, 1876. Habitat; N. H., IN, Won) Ie 3 ING II: molestus Say. Jour. Ac. Phil. III, 31, 1823; Compl. Wri. I], 53. Wiede- man, Auss. zwei. Ins. I, 125. Osten Sacken, Prodrome II, Poe rlabitaty Kya Ds 1 CiGas Mio Ne Csi lenn., Kis, Bla. Ne Je mutatus Walker. Dipt. Saund. 23, 1856. Habitat; United States. nebulosus Palisot de Beauvois. Ins. 222, tab. 3, fig. 4-5. Habitat; N. America. nigrescens Palisot de Beauvois. Ins. 100, tab. 2, fig. 2. Wiedeman, Auss. zweif. Ins. I, 116. Osten Sacken, Prodrome II, 453. Habitat; Atlantic States. nigrovattatus Macquart. Dipt. Exot. Suppl. 2, 24, 1846. Osten Sacken, Prodrome II, 449. Habitat; Atlantic States. mnivosus Osten Sacken. Prodrome II, 445, 1876. Habitat; N. J., .N. Y., Ohio. novae-scotiae Macquart. Dipt. Exot. Suppl. 2, 24, 1846. Habitat; N. America. ohioensis Hine. Can. Ent. XXXIII, 28, 1901. Habitat; Ohio, Ind. pruinosus Hine. Can. Ent. XXXII, 247, 1900. orion Osten Sacken. Prodrome II, 442, 1876. van der Wulp, Tijdschr. v. Ent. XXIV, 158. Habitat; Canada, Mass., Conn. N. J. pallidus Palisot de Beauvois. Ins. 100, tab. 2, fig. 3. Wiedeman, Auss. zweit. Ins. I, 118. Habitat; N. America. palpinus Palisot de Beauvois. Ins. 221, tab. 3, fig. 1. ‘Habitat; N. America. patulus Walker. List I, 175, 1848. phaenops Osten Sacken. West. Dipt. 217, 1877. Habitat; Cal., Col. politus Johnson. Ent. News XI, 325. 1900. Habitat; N. J. procyon Osten Sacken. West. Dipt. 216, 1877. Habitat; California. proximus Walker. List I, 147, 1848. Habitat, Florida. psamnophilus Osten Sacken. Prodrome II, 445, 1876. Habitat; Florida. pumilus Macquart. Dipt. Exot. I, pt. 1, 146, 1838. Osten Sacken, Pro- drome II, 448. Habitat; Middle and Atlantic States. punctifer Osten Sacken. Prodrome II, 453, 1876; West. Dipt. 220. Habitat; Western N. America. pygmaeus Williston. Tr. Ks. Acad. Sci. X, 141, 1888. Habitat; Florida. recedens Walker. List I, 147, 1848. Williston, Tr. Ks. Acad. Se. X, 138. Habitat; Middle and south Atlantic states. catenatus Osten Sacken. Prodrome II, 433, 1876; Catalogue 1878, 227. reinwardtii Wiedeman. Auss. zweifl. Ins. I, 130. Osten Sacken. Pro- drome II, 461. Habitat; Middle and Atlantic States, Canada, Kan. erythroletus Walker. Dipt. Saund. 25, tab. 2, fig. 1. rhombicus Osten Sacken. Prodrome II, 472, 1876; West. Dipt. 218. Habitat; Col., Wy., Or., Wash. rufofrater Walker. Dipt. Saund. 26. Habitat; Georgia. rufus Palisot de Beauvois. Ins. 100, tab. 2, fig. 1. Wiedeman, Auss. zweifl. Ins. 1, 117. Osten Sacken, Prodrome II, 456; Supplement 509. Habitat; S. Car., Ga., Fla. fumipennis Wiedeman. Auss. zweifl. Ins. I, 119. sagax Osten Sacken. Prodrome II, 452, 1876. Habitat; Ills., Min., N. J. scitus Walker. List I, 181. Habitat; N. America. septentrionalis Loew. Verh. zool.—bot. Ges. VIII, 592. Osten Sacken, Prodrome II, 467. Habitat; Labrador, -Alaska. 28 OHIO STATE ACADEMY OF SCIENCE. sequax Williston. Tr. Ks. Acad. Sci. X, 187, 1888. Habitat; Oregon- sodalis Williston. Tr. Ks. Acad. Sci. X, 1839, 1888. Habitat; N. America. sonomensis Osten Sacken. West. Dipt. 216. Habitat; California, Alaska.. sparus Whitney. Can. Ent. XI, 38, 1879. Habitat; Fla., N. J., N. H., Conn., Mass. says Ses, Ire, Acad Se iol INL, BB, ees Comyn, WWoriie, JUL, S44 Wiedeman, Auss. zweifl. Ins. I, 131. Osten Sacken, Prodrome: II, 454. Habitat; Middle and Southern States. sulcifrons Macquart. Dipt. Exot. Suppl. 5, 33, 1855. Osten Sacken, Catalogue 1878, 60 and 228. Habitat; Penn., N. J., Ohio, Ills. tectus Osten Sacken. Prodrome II, 436. superjumentarius Whitney. Can. Ent. XI, 37, 1879. Habitat; N. H..,. N. J., Ohio. susurrus Marten. Can. Ent. XV, 111, 1883. Habitat; Montana. tener Osten Sacken. Prodrome II, 440, 1876; Catalogue 1878, 60 and 228. Habitat; Ga., Fla. (?) unicolor Macquart. Dipt. Exot. Suppl. 2, 22. tenessensis Bigot. Mem. Soc. Zool. Fr. V, 660, 1892. Habitat; Tenn. tetricus Marten. Can. Ent. XV, 111, 1883. Habitat; Montana. tetropsis Bigot. Mem. Soc. Zool. Fr. V, 681, 1892. Habitat; Georgia. thoracicus Hine. Can. Ent. XXXII, 247, 1900. Habitat; New York. trijunctus Walker. List V, 182, 1853. Osten Sacken. Prodrome II, 432. Habitat; Florida. trimaculatus Palisot de Beauvois. Ins. 56, tab. 1, fig. 5. Wiedeman,. Auss. zweifl. Ins. I, 187; I, 182. Macquart, Dipt. Exot. I, pt. 1, 142. Osten Sacken, Prodrome II, 439. Habitat; Middle and Southern States west to Kansas. quinquelineatus Macquart. Hist. Nat. Dipt. I, 200. trispilus Wiedeman. Auss. zweifl. Ins. I, 150. Osten Sacken, Prodrome: II, 464. Habitat; Northern and Middle States, Illinois, N. J. turbidus Wiedeman. Auss. zweifl. Ins. I, 124. Osten Sacken, Prodrome II, 480. Habitat; Ga., Ky., Fla. (?) fusconervosus Macquart. Dipt. Exot. I, pt. 1, 147. variegatus Fabricius. Syst. Antl. 95. Wiedeman, Dipt. Exot. I, 67; Auss. zweifl. Ins. I, 120. Osten Sacken, Prodrome II, 487. Habitat; Middle States. venustus Osten Sacken. Prodrome II, 444, 1876. Habitat; Tex., Ks.,. Ohio, Oklahoma. — vicinus Macquart. Dipt. Exot. I, pt. 1, 143. Habitat; Carolina. villosulus Bigot. Mem. Soc. Zool. Fr. V, 684, 1892. Habitat ; California. vivax Osten Sacken. Prodrome II, 446, 1876; Catalogue 1878, 60 and 228. Habitat; N. Y., Me., Ohio. (?) marginalis Wiedeman. tudinal vein ‘, lugens. Hyaline triangle Gan eaalis small, confined to the apices of the second and third posterior cells by - moechus: “: Hyaline triangle not ee small; dark picture of pe mone falas dim shes : Gani eee Hee pees aes HP) ap Vis Ase es Drie Sia yak : 34 OHIO STATE ACADEMY OF SCIENCE. 10. Apical-spot not wider than the distance between the costa and second vein at the outer border of the cross—band 11. Apical-spot wider than the distance between the costa and the second vein at the outer border of the cross—band 12. 11. The yellow on each side of the second segment encroached upon from behind by a black triangle; the yellow spot is very small moerens. The yellow on each side of the second segment not encroached upon by a black triangle, or if so the triangle is very small. calhidus. ‘12. The hyaline triangle of the wing produced beyond the second longitudinal vein toward the costa 13. The hyaline triangle not produced beyond the second longi— tudinal vein 14. 13. The cross—band of the wing reaches the posterior margin fallax. The cross—band of the wing does not quite reach the posterior margin hilaris. 14. Abdomen with a middorsal row of large black spots widest before; facial callosities shining black frigidus. Abdomen with a middorsal row of small. gray or. yellow ; triangles 15. 15. Abdomen with a middorsal yellow stripe 17. Abdomen with a yellow stripe on either side of the black which contains the middorsal row of small triangles -montanus. Abdomen yellow on the sides of the first four segments but with no suggestion of stripes 16. 16. The cross-band occupies only the apex of the second sub-— marginal cell sackeni. The cross—band occupies the anterior half of the second sub-— marginal cell indus. 17. Scutellum yellow vittatus. Scutellum black 18. 18. Four black stripes on the dorsum of the first two abdominal segments; the inner of these may be united striatus. Two black stripes on the dorsum of the first two abdominal segments univittatus. CHRYSOPS BRUNNEUS Nl. Sp. Length 8-10 mm. Antennae noticeably longer and the first two seg— ments thicker than in flavidus; first and second segments brown, third yellow at the base with apical half black; thorax with four grayish longitudinal stripes separated by brown intervals, the apical spot spreads over a large part of the apex of the wing fading out so gradually that the real extent of it is not clearly defined; a narrow whitish hyaline band is conspicuous along the distal margin of the cross band and occupies part of each of the first submarginal and first, second and third posterior cells; the cross—band fills out the fourth posterior cell and invades the fifth posterior; the margin of the posterior branch of the fifth vein spreads across the apex at the anal cell and communicates somewhat with the cross—band; the first basal cell is infuscated for two-thirds, and the second for about half the length. The abdomen is clear brown often with very small yellowish tri- angles in the middle of the posterior part of segments two to five. The male and female are alike, differing only in sexual characters. TABANIDA OF OHIO. 35 Habitat: Sandusky, Ohio. Many specimens of both sexes. The species is separated from flavidus by the following: The antenne are longer and have the first two segments thicker and the third colored differently at base. The basal cells are more infuscated, the apical spot less clearly defined and the abdomen more uniformly colored. In flavidus the abdomen is distinctly lighter in color at base, but not so in brunneus. The former ap- pears to be southern in its range, while the latter is probably northern. Osten Sacken’s description of the abdomen and apex of the wing under flazidus would seem to indicate that he had both species before him. The species is abundant at Sandusky from the latter part of June to the first of August, and is an annoying pest in the vicinity of the marshes. It is abundant at any time of day, but appears to be most numerous and persistent in the evening, and its at- tacks are prolonged till almost dark in warm weather. CHRYSOPS CALLIDUS Osten Sacken. Length 7-9 mm. The width of the apical spot is equal to the dis- tance between the costa and the second vein at the distal end of the first vein. First two segments of the abdomen yellow on the sides and this color on the second is not encroached upon by a black triangle. Basal half or more of the venter of the abdomen plainly yellowish but with a dark stripe or some dark spots on the mid ventral line. Female: Frontal callosity black; facial callosity yellow; both basal cells hyaline; dorsally the abdominal segments with narrow, yellow hind margins which expand into triangles in the middle, none of these triangles extend forward far enough to entirely divide the black of any of the segments. Lateral margins of the segments behind the third black. Male: Both basal cells with about the apical third hyaline;. the yellow on the sides of the first two abdominal segments is more promi— nent and the posterior margins of all the segments wider than in the male of moerens. Habitat: All parts of Ohio. It is exceedingly common all over Ohio during the latter half of May and first half of June, and the females have often been observed attacking horses and cattle. The eggs are laid on foliage over water along ‘the margins of ponds and canals; on a previous’ page in this paper we have described the eggs and ‘the process of oviposition. The males have been taken on flowers and swept from vegetation growing near water. Although the species is: most abundant during the months I have mentioned above, now and then a specimen is seen later, and last summer specimens were pevuied ¢ as late as August 28th, in the northern part of the state. 36 OHIO STATE ACADEMY OF SCIENCE. The. hyaline basal cells in the female and the hyaline apical third of the same in the male, and the absence of the black tri- angle on the posterior margin of the side of the second segment in both sexes, serve to distinguish this species. CHRYSOPS CELER Osten Sacken. Length 8-10 mm. Whole body black, apex of the wing beyond the cross band clear. hyaline. Female: Base of antennae yellowish; sides of the thorax with a conspicuous tuft of yellow hairs in front of the wings; both basal cells of the wings brown on the basal three-fifths; cross band very nearly reaching the posterior margin filling out the fourth posterior cell with the exception of a very narrow apex; the fifth posterior cell is infuscated across its base but the apex is hyaline. Male: Black including all the atennae and the hairs on the sides of the thorax; wing like that of the female except the anal cell is wholly infuscated, and the hyaline spot at the apex of each of the basal cells is shorter; these spots occupy the entire. width of both cells. Habitat: Has been taken in central and southern Ohio, and usually appears by May 15th. The female is distinguished from all other species by the tufts of yellow hairs on the sides of the thorax. The male is distinguished from that of miger by the hyaline spots at the apex ot the basal cells, occupying the whole width of these cells; and from that of fwgaxr by the cross-band practically filling out the fourth posterior cell. This is a common species in various parts of Ohio during the latter half of May. The eggs have been observed commonly along the margin of ponds and artificial lakes clinging to various kinds of foliage overhanging the water. The female has been observed ovipositing on different occasions, and is the only species of the genus observed placing its eggs in masses composed of layers one above the other as in Tabanus. Both sexes have often been taken from flowers, the females are annoying to stock, and persist in their attacks, and the male is occasionally found rest- ing on foliage. CHRYSOPS FALLAX Osten Sacken. Length 0-8 mm. Fadce, palpi and base of antennae yellow, the hyaline triangle reaches the costa, separating the apical spot from the cross band; the cross band occupies nearly all of the space beyond a line from the apex of the first vein to the apex of the posterior branch of the third vein; the distal border of the cross band is quite regular and is marked bya slight curve from the costa just before the apex of the first vein to the apex of the anterior branch of the fifth vein; the fourth posterior cell is entirely filled out with brown, the posterior branch of the fifth vein is slightly margined with brown on both sides and both basal cells are hyaline. TABANIDA OF OHIO. 27 Female: Facial callosity black; dorsally, abdominal segments black as follows: first with a spot beneath the scuteilum, second with’ two narrow oblique spots, third and fourth each with four nearly square spots, the others entirely black except the narrow yellow posterior margin; ven- trally, abdomen yellow basally, marked with black on apical half. Male: Abdominal spots on the second segment united anteriorly, spots on third and fourth segments small. Habitat: Medina, Sandusky, Wauseon. The markings on the abdomen are somewhat variable, and the male has a slight infuscation at the base of each of the basal cells. The two sexes are so near alike that they are easily asso- ciated. The separation of the apical spot from the cross-band dis- tinguishes it from all species except Hilaris, and fallax is noticea- bly smaller than that species. ‘The black marking beneath the scutellum is single in fallax and divided in hilarts. | CHRYSOPS FLAVIDUS Wiedemann. Length 7-10 mm. First two segments of antennae yellowish, not noticeably thickened; basal part of third segment yellowish with an obscure brown band on its thickest part, apical half black; the thorax has four grayish longitudinal stripes separated by brown intervals; the parts of the wing not occupied by brown are grayish hyaline and not clear as in most species; the hyaline triangle reaches forward to the middle of the first submarginal cell and includes about half of the second submarginal and parts of the first three posterior cells; the cross band fills out the fourth posterior cell; the apex of the anal and part of the fifth posterior are infuscated; usually the apical half of the first basal cell and two-thirds of the second basal are hyaline but some variation is allowable; dorsally the abdomen is brownish, lighter on the first seg- ment and sides of second, and segments two, three and four have a prominent gray triangle in the middle of the posterior part preceded by a dark area which usually takes the form of a geminate spot; the anterior margins of the last three segments are black or brown; the dark markings of the abdomen are somewhat variable. The male and female are alike, except in the single male I have fully half of the second basal cell is brown. Habitat: Taken at Cincinnati, Ohio, by Charles Dury. Regarding the synonymy I am inclined to the belief that flavidus, pallidus and canifrons refer to the species here consid- ered as flavidus, for Wiedemann’s type came from Florida, Bel- lardi’s from Mexico, and Walker’s from Georgia. Besides, they all mention the dark markings on the abdomen. CHRYSOPS FRIGIDUS Osten Sacken. Length 6-8 mm. Facial callosities shining black with a stripe of yellow pollen between them, palpi yellow; first basal cell of the wing brown on basal three-fifths and at apex, second basal brown on basal half and at extreme apex, cross band not quite reaching the posterior 38 OHIO STATE ACADEMY OF SCIENCE. margin, posterior branch of the fifth vein margined with brown whicit color spreads across the apex of the anal cell and also unites with the cross band across a large part of the fifth posterior cell, the apical spot unites with the cross band in the marginal and first submarginal cells and entirely fills them out with brown and extends into the anterior part of the second submarginal. Female: The facial callosities black produced forward and inward and meeting above the mouth, frontal callosity shining black; first two segments of the abdomen broadly yellow on the sides, first segment dor- sally with a large black spot beneath the scutellum, second with a black spot which is variable in different specimens, in some it is smaller and confined to the anterior half of the segment, while in others it is larger, widened anteriorly, and may unite with the black of the third segment, a transverse spot on anterior part of third segment occupying nearly its whole width, last three segments black with yellow hind margins, ven— trally abdomen yellow with small black spots in the middle of some or all the first four segments, last three segments blackish with yellow hind margins. Male: Abdomen, dorsally, yellow on the side of the first four seg— ments, middle of each of these segments with a large black spot which is widest before and which does not reach the posterior margin of its segment except on the first where it is confluent posteriorly with the black of the second, last three segments black with yellow hind margins, ventrally, like the female except the black markings are larger than in that sex. Habitat: Sandusky, Ohio. | Chrysops frigidus is the only North American species of its genus so far described with an apical spot and with the face en- tirely black in ground color. In other species of its group the ground color above the mouth is yellow. In this particular it agrees with C. celer and other members of the group without an apical spot. CHRYSOPS INDUS Osten Sacken. Length 7-9 mm. The apical spot fills out the marginal and first sub- marginal cells, and extends into the second submarginal along the apical three-fourths of the anterior branch of the third vein, Female: Frontal callosity black, face, palpi and base of antennae yellow; first basal cell of the wing brown except a small patch in the apical third; abdominal segments one to four and oftentimes five and six yellow on the sides; yellow triangles on the middle of the third and following segments produced forward and dividing the black of these seg— ments into two parts, thus a middorsal line is formed composed of a series of triangles; there is a conspicuous triangle on the second segment but it does not extend forward to the anterior margin of that segment. Male: Much darker in color than the female; usually the first basal cell is entirely filled out with brown, but in all specimens I have seen there is a small hyaline patch at the apex of the second submarginal cell and in some specimens a very small hyaline patch is present in the apical third of the first submarginal; anal cell entirely infuscated; abdominal segments one to four narrowly margined with yellowish on the sides; posterior margins of the segments behind the second narrowly but plainly yellow, and second and following segments with very small yellow tri- angles; abdomen otherwise clear black. This sex is here described for the first time. TABANIDA OF OHIO. 39 Habitat: Taken in Central°Ohio. It appears usually by the middle of May. This species is one of the first to appear in the spring, and females have been observed ovipositing on plants growing along the margin of a small lake on the University grounds. Males have been taken near where the females: were ovipositing and on flowers of Cornus. The eggs are placed in single layers on grass blades that hang out over the edge of the water. CHRYSOPS LUGENS Wiedemann. Length 8-9 mm. First segment of the antennae yellow, second variable but usually yellow, third black, face yellow, its lateral callosities black; the hyaline triangle of the wing does not cross the second longi— tudinal vein; the apical spot includes nearly all of the second submarginal and the apex of the first posterior cells, so that the triangle is narrow and may be said to be lunate; the abdomen is wholly black above or marked on the basal part with three yellow longitudinal stripes. Female: Frontal callosity black; thorax dorsally with two greenish gray stripes, narrowly separated by brown, first basal cell brown, second hyaline; the cross band fills out the fourth posterior cell; posterior branch of the fifth vein obscurely margined. Male: Medium stripes of the thorax more yellow than in the female, second basal, fifth posterior, and anal cells largely infuscated; to the unaided eye a subhyaline streak is visible beginning at the margin of the wing and passing the length of the fifth submarginal cell into the second basal and thence toward but not attaining the base of the cell; this sex is much like the female and easily associated with it. Habitat: Taken at Medina, Ohio. CHRYSOPS MOECHUS Osten Sacken. Length 8 mm. Hyaline triangle of the wing very small occupying only part of the second and third posterior cells. Female: Face, palpi and base of antennae yellow, frontal callosity black; first basal cell of wing infuscated, second hyaline except a margin along the vein which separates it from the first, the cross band reaches the posterior margin filling out the fourth posterior cell; in the fifth posterior cell there is a margin along the posterior intercallary vein and also along the posterior branch of the fifth; the apex of the anal cell is slightly infuscated; dorsally the markings of the abdomen are variable but feur longitudinal rows of dark spots are usually visible. Male: Face yellow, otherwise whole body including most of the wings black; the only trace of hyaline in the basal cells is a dot on .the fourth vein near the base of the discal cell. Habitat: Common all over Ohio. The very small hyaline triangle serves to distinguish this species from others, and also to associate the sexes which are strikingly different in coloration. I have observed the females ovipositing on foliage overhang- ing a mill race at Georgesville, Ohio, June 4, 1899. 40 OHIO STATE ACADEMY OF SCIENCE. CHRYSOPS MOERENS Walker. Length 8 to 11 mm. A dark colored species, sides of first two abdominal segments narrowly marked with yellow, that on ‘the second segment encroached upon from behind by a small black triangle. Wings beyond the crossband with a very narrow brown border along the costa; under side of abdomen uniformly black, .or at most with suegestions’ of yellowish in patches. Female: Frontal callosity black, shining, facial callosity valour shining; wings with base, costal cells and crossband, which does not reach the posterior margin, brown or nearly black; the brown margin along the costa beyond the crossband is so narrow as to be nearly obsolete, both basal cells hyaline; the abdominal segments, both dorsally and ven-— trally are gray margined behind and dorsally these margins expand into triangles in the middle of the segments. Male: Darker colored than the female, a small patch only hyaline at apex of each of the basal cells; posterior margins and triangles of the abdominal segments less plainly marked than in the female; the yellow on sides’ of ‘the first two abdominal segments variable, that on second segment present in all my specimens and quite constant, but it is oftentimes lacking altogether on the first segment; this sex usually some- what smaller than the female. : Habitat: Northern Ohio. The species is a very common and annoying one at Sandusky through July. The females bite severely and persist in follow- ing our small boats through the marshes, and the hotter the sun the more active the flies. The females oviposit on various kinds of foliage in the marshes, oftentimes several rods from shore, where the water is four feet in depth or more. The eggs are de- posited in a single layer, and a short time after deposition become pure shining black in color. Just how the young from masses of eggs deposited in such deep water grow to maturity and emerge as adults I have not been able to observe; of course some masses of eggs are deposited very near the shore. The males have been taken in large numbers by sweeping in grass near shore, and'on various kinds of flowers which grow in the vicinity. This is the first mention of the male of this species, I have seen in print. - The large size, the abdomen black ventrally and the very narrow costal margin beyond the cross-band in both sexes easily distinguishes this species from others of its group. CHRYSOPS MONTANUS Osten Sacken. Length 7-8 mm.. Face, palpi and base of antennae yellow; the hyaline triangle does not cross the second longitudinal vein but in the majority of specimens reaches entirely to it; the apical SOE, covers about one half of the second submarginal cell. Female: Frontal callosity black; first basal cell of wing infuscated on basal third and on the narrowed part at apex; second basal cell hyaline except a slight infuscation at extreme base; the cross band attains the posterior margin entirely filling out the fourth posterior cell; the posterior TABANIDA OF OHIO. 4¥ ‘branch of the fifth vein is plainly margined on both sides with brown and this margin communicates more or less with the cross band across the fifth posterior cell; the first abdominal segment has a rather obscure dark patch beneath the scutellum, the second has two elongate oblique black spots connate anteriorly, and sometimes on either side near the posterior margin a very small additional spot; the third and fourth each have four black spots, and in some specimens five has likewise, but usually five, six and seven are uniformly black on the whole anterior part; all the segments behind the first are narrowly margined with yellow; ventrally, abdomen yellow with apex and narrow lines on the sides of some of the segments blackish. Male: Both basal cells infuscated except a small hyaline patch at the apex of each; the first segment of the abdomen is blackish with the exception of a yellow posterior margin which is slightly expanded on either side, the second has a large quadrate black spot in the middle enclosing a small yellow triangle posteriorly and on each side a narrow longitudinal spot also black; three and four are colored like two; the seg— ments behind the second are plainly margined posteriorly with yellow and five, six and seven are uniformly black in front. These markings. form a wide longitudinal black stripe in the middle of the abdomen enclosing small yellow triangles on segments two to four, and on each side of this a much narrower black stripe followed by a still narrower black stripe. Hitherto this sex has not been described. Habitat: Northern and Southern Ohio. _ I have never found the species common except at Cincin- mati in the region of a series of small artificial lakes. Here the females were very persistent in attacking me, and I procured males by sweeping the plants that grew along the edge of one of the lakes. CHRYSOPS NIGER Macquart. Length 6-8 mm. First segment of antennae yellow, face yellow with cheeks and facial callosities black; body and legs except the metatarsi and part of the following segment on the middle and posterior pairs, black ; apex of. wings .beyond the cross band hyaline. Female: First basal cell of wing brown except a small spot near the apex bordering the fourth longitudinal vein, second basal hyaline; the cross band nearly fills out the fourth posterior cell but does not enter the fifth posterior ; the very narrow hyaline apex of. the fourth posterior cell -varies slightly in width in different specimens. Male: Colored like the female except only a small. spot at apex of the second basal cell is hyaline, and the fifth posterior, except at extreme base,.and anal cells are dimly infuscated. Habitat: A common species in Ohio and one of the earliest to appear in spring. . The entirely hyaline second basal cell distinguishes the female of this species from all others of its group. The small size of the hyaline spots in the apex of the basal cells are characteristic of the male. The hyaline spot of the first basal is very small and borders the fourth vein. nis 42 OHIO STATE ACADEMY OF SCIENCE. Different specimens of this species taken in the same local- ity are quite constant, but there appears to be considerable vari- ation in the amount of infuscation of the first basal cell when specimens from different sections are compared. Specimens from the southern part of its range seem to show the most hyaline in this cell. Common in May and June in all parts of the state. The females are often observed on horses and cattle. CHRYSOPS OBSOLETUS Wiedemann. Length 7-8 mm. Basal segments of antennae yellow, second and third segments usually black although the second is sometimes yellowish; tace yellow, its lateral callosities black; thorax above with two medium greenish gray stripes narrowly separated by brown, the hyaline triangie of the wing crosses the second longitudinal vein and in most specimens reaches the costa; the apical spot is confined to the distal parts of the marginal and first and second submarginal cells, the cross band nearly fills out the fourth posterior cell leaving only an obsolete margin at itS apex. Female: Frontal callosity black, both basal cells hyaline; dorsally, abdomen black with a yellow middorsal stripe on the first four segments; variations occur in which an additional yellow stripe is present on either side of the middorsal one, and in some specimens the first two segments are narrowly yellow on the sides. Male: Several specimens of this sex have the first basal cell infus- cated and the abdomen black above with the single middorsal yellow stripe; otherwise like the female. Habitat: Common all over Ohio. This is a common species in woods where the females are an annoying pest. I have taken numbers of the males by sweeping along the margins of artificial lakes. CHRYSOPS SACKENI Nn. Sp. Length 8-10 mm. Abdominal segments one to four yellow on the sides; apical spot where it joins the cross band equal in width to the marginal cell plus one-fourth of the first submarginal at the same place. Female: Frontal callosity yellowish on the disk, and black on the margin; annulate portion of third atennal segment black, remainder of antennae, face and palpi yellow; first basal cell infuscated at base for about one-third its length, and at apex on the narrowed portion; second basal cell with a much shorter infuscation at base and scarcely any at apex; cross band abbreviated behind, the fourth posterior cell not filled out with brown; the cloud on the last section of the fifth vein spreads practically across the anal cell and communicates with the cross band across the base of the fifth posterior cell; dorsally, abdominal segments three to six with distinct posterior yellow margins which expand into prominent triangles in the middle; second. segment with a prominent triangle but not margined behind; none of the triangles reach the anterior margins of their respective segments; ventrally, abdomen yellow with a mid ventral row of black spots and on each side two narrow black stripes; dorsally, the black on the second segment is composed of two oblique spots connate at the anterior third and attaining both margins. TABANID OF OHIO. 43 Male: First basal cell with a hyaline patch before the apex; second ‘basal cell with a long hyaline streak through its center; this streak is expanded near the apex of; the cell and communicates with the hyaline patch in the first basal; the veins which bound the anal cell are margined with brown; the yellow on the sides of the first two abdominal segments is less extensive than in the female and the yellow triangles are smaller. Habitat: Sandusky, Ohio. The width of the apical spot easily separates this species from moerens, callidus and indus. It is related to pudicus, but is more robust, the black on the second segment is more extensive and the cross-band different than in that species. Osten Sacken prob- ably included it with pudicus. See his observation appended to ‘that species. It appears to be a common species on Cedar Point during the first half of June, and the females were very persistent in attack- ing us while we were collecting the specimens we procured. CHRYSOPS STRIATUS Osten Sacken Length 7-9 mm. The two longitudinal stripes on the middle of the thorax are “greenish-gray” and therefore quite different from those of vittatus; abdomen, dorsally marked with four longitudinal stripes, the two inner of which usually reach the scutellum and join: one another on the first segment and in now and then a specimen they also unite on the anterior part of the second segment; the outer stripes may or may not reach forward onto the first segment; ventrally yellow on basal half, marked with black on middle and sides on apical half. _ Female: Frontal callosity varying from light brown to pure black; scutellum black on the disk, margined with yellow; first basal cell of wing brown, second hyaline except a small patch at base; the cross band leaves a very narrow margin at the apex of the fourth submarginal cell; posterior branch of the fifth vein dimly margined on both sides, otherwise the fifth posterior and apical cells are hyaline; the hyaline triangle occu— pies the apical parts of the first three posterior cells and extends into both submarginal cells in the region of the branching of the third vein; the second submarginal is almost entirely brown in some specimens or in others may be hyaline along the whole length of the posterior branch of the third vein to the extent of half the cell. Male: Scutellum usually entirely black; a subhyaline streak passes from the margin of the wing lengthwise of the fifth posterior cell into the second basal and toward the base of the wing along the fourth vein; otherwise the second basal and fifth posterior cells infuscated, first basal brown with the exception of a small hyaline spot; apical spot includes nearly all of the second submarginal and may encroach upon the first posterior cell. The male is here described for the first time. Habitat: Sandusky, Ohio, where it is fairly common. This species is variable and hard to define; the variations extend to characters which in other species are known to be constant, and in some instances suggest a.close relationship with sequax, whose type locality is Western Kansas. 44 OHIO STATE ACADEMY OF SCIENCE. CHRYSOPS UNIVITTATUS Macquart. Length 6-8 mm. Basal segment of antennae yellow, second a little darker and third nearly black; hyaline triangle of the wing reaches or nearly reaches the second vein; the apical spot is large, occupying all the marginal cell beyond the cross band, the broad apex of the first sub- marginal, all the second submarginal except a small patch at base and the apex of the first posterior; the cross band entirely fills out the fourth posterior cell. Female: Frontal callosity black, face yellow, its lateral callosities brown or black; first basal cell brown; second basal cell with a very little brown at base; posterior branch of the fifth vein narrowly mar— gined with brown, abdomen with a middorsal yellow, longitudinal stripe with a black stripe of about the same width on either side of it; outside. the black stripes the abdomen may be entirely yellow, or all but the first two segments may be dull black, or there may be a narrower black stripe beginning on the third segment and continuing onto the fourth and fifth segments; the last three abdominal segments are often blackish obscuring all stripes in that region. Male: Second basal cell of wing brown on its basal two-thirds and the fifth posterior more brown than in the female; last three segments of the abdomen black, first four with a middorsal yellow stripe, on each side of which is a wider black one; and outside of the latter on segments. three and four is an additional narrow black stripe. The three specimens of this sex I have present no variations. It looks much like the female and is easily associated with it. Habitat: A common species in June in all parts of the state. The males have been taken on various flowers. CHRYSOPS VITTATUS Wiedemann. Length 8-9 mm. Face, palpi and base of antennae yellow; thorax dorsally with four bright yellow longitudinal stripes with brown intervals separating them; scutellum yellow; hyaline triangle of the wing rather small occupying the apical part of the first three posterior cells and extending into the first and second submarginal in the region of the branching of the third vein; a hyaline streak in the second submarginal cell usually follows. the posterior branch of the third vein toward the margin of the wing but does not reach this margin. Female: Frontal callosity yellow; first basal cell of wing brown, second slightly infuscated at base, otherwise hyaline, cross band very nearly attains the posterior margin; the fourth posterior cell except narrow apex, fifth posterior except at base and narrow apex and anal at apex brown, abdomen dorsally with four longitudinal black stripes; the two inner are pale on the first segment and the two outer on the first and second segments; ventrally yellow, darkened at apex, and on either side with two narrow dark lines abbreviated before. Male: Like the female except the second basal cell of the wing has only the apical third hyaline. Habitat: Found in all sections of Ohio. ah This species is not likely to be confused with others of our fuana except striatus, and from this it may be distinguished by the yellow thoracic stripes, and yellow scutellum in both sexes. TABANIDA) OF OHIO. 45 The most abundant and widespread species in this section. The females are troublesome to stock, and are commonly ob- served on horses and cattle with their abdomens filled with blood. The males have been procured along the margin of ponds and on various kinds of flowers. PANGONIA Latreille. Hist. Nat. des Crust. et des Ins. III, 1802. Only a single species of this genus has been taken in Ohio up to the present time. Two others have a range such that they may be considered as probably belonging to our fauna. These three are considered in the key below. The males and females are so much alike that a single key will serve for both sexes. Key to the species. 1. Antennae dark 2: Antennae light reddish or yellow pigra. 2. Hind borders of the abdominal segments with gray hairs rasa. Hind borders of the abdominal segments with golden-yellow hairs tranquilla. PANGONIA RASA Loew. Length 11-183 mm. A brownish species with the hind margins of the abdominal segments white; femora light brown, tibiae and _ tarsi darker; first two segments of the antennae brown with black hairs, third segment nearly black; wings pure hyaline with brown stigma. Female: Thorax distinctly gray with three darker longitudinal vittae; abdominal segments with distinct gray margins which in some cases expand into median triangles, most distinct on the second segment ; proboscis slightly longer than the height of the head nearly black in color, maxillary palps yellowish, the terminal segment pointing downward and slightly forward, half as long as the proboscis. Male: General color darker than in the female, the posterior margins of the abdominal segments narrower and consequently less prom— inent than in the female and with no trace of a median triangle on any of the segments; proboscis about’as long as the height of the head, palpi darker than in the female with the terminal segment pointing almost directly forward. Habitat: Northern and Southern Ohio. I have taken both male and female on flowers, but have never observed the female around stock. coNiops Aldrich. Psyche VI, 236, 1892. There is only one species in this genus. So far as our species of this group are concerned, the genus appears to be sufficiently characterized, but a full knowledge of Central and South Ameri- can -forms is necessary before conclusive Results can be meached: in the sub-family. Cay earstmatgi Dad ARE n , Se bt 46 OHIO STATE ACADEMY OF SCIENCE. GONIOPS CHRYSOCOMA Osten Sacken. Length 12-14 mm. Abdomen short and wide; legs pale; wings hyaline at base and on part of posterior margin, otherwise dark almost black in fully matured specimens. Female: Body entirely pale yellowish although some specimens. show a brownish tinge on dorsum of thorax and abdomen, posterior margins of abdominal segments clothed with silvery white hair; face and front wide, eyes small, and pointed above, a line along the inner side of each from the most inferior to the most superior points is very nearly a straight line; proboscis much shorter than the head, palpi nearly as. long as the proboscis. Male: Thorax black above with two narrow longitudinal stripes, abdomen black with a tinge of reddish on the sides and with narrow posterior margins to the segments; clothed with pale yellowish pile. Habitat: Northern and Southern Ohio. I have taken both sexes of this species from foliage, but have: not observed the female around stock. The peculiar dark mark- ings on the wings of both sexes and the form of the eyes and wide front in the female will serve to distinguish this species. from all others of the family in our fuana. TABANUS Linne. Fauna Suecica, 1761. In this genus the markings of the abdomen are much used’ for distinguishing species. The term gray markings as used in the key below refer to the rows of triangles and to the stripes, and not to the gray margins of the various segments. The males. and females of the same species in this genus are very much alike in coloration, so it does not appear necessary to construct a separate key for each sex. Key to the species. 1. Eyes bare 28 Eyes pilose 16.. 2. Abdomen with definite gray markings 3. Abdomen not with definite gray markings 13. 3. The gray markings of the abdomen consist of a single longi— tudinal row of triangles 4. The gray markings of the abdomen consist of three longi— tudinal rows of triangles or spots 9). The gray markings consist of a middorsal stripe running from the scutellum to the end of the abdomen, and usually an additional stripe on each side 12... 4, Wing uniformly hyaline, but the stigma brown coffeatus. Wing smoky on basal part or with‘ distinct spots of brown, at _ least along the cross veins and bifurcation of the third vein ~ 5... 5. Wing with distinct brown patches other than along the cross veins and the bifurcation of the third vein VeEnustus. . Wing without distinct brown except along the margins of the cross veins and bifurcation of the third vein 6.. 10. 14. 15. 16. 1 18. 1) 20. 21. TABANIDAS OF OHIO. AT Prevailing color of the abdomen black (e Prevailing color of the abdomen reddish brown ~- 8. Segments two to five with small gray triangles superjumentarius. Segments three to five with large gray triangles, no triangle on the second segment trimaculatus. Abdominal segments two to five with medium sized gray triangles, wing of female whitish on the disk, all the facets of the eyes of the male of nearly the same size variegatus. Abdominal segments two to five with large gray triangles, wing of the female not whitish on the disk, large and small facets of the eyes of the male distinctly differen— tiated sulcifr¢ Ons. The gray, spots on the sides of the abdominal segments are small and do not touch the hind margin 10. The gray spots on the sides of the abdominal segments are large and touch the hind margin Whe Third antennal segment long and narrow, prevailing color of the abdomen reddish brown longus. Third antennal segment rather short and wide, prevailing color of the abdomen black pumilus. Gray stripes on the thorax plainly reaching the scutellum VIVaN. Gray stripes on the thorax obsolete behind MUOSUS. Thorax uniformly yellowish pollinose, costal cells yellow costalis. Thorax dark colored with gray stripes, costal cells hyaline lineola Whole body including the wings black atratus- Whole body including the wings not black pene Abdomen black, wings brownish with a darker spot at the bifurcation of the third vein Sty ZUs. Abdomen brownish, no dark spot at the bifurcation of the third vein 15. Wings hyaline except the costal cells which are brown americanus: Wings uniformly brownish giganteus. Cross veins and bifurcation of the third vein margined with brown 17. Cross veins and bifurcation of the third vein not margined with brown : 18. Rather large, grayish species, abdomen not distinctly reddish on the sides reinwardtit. Medium sized, abdomen broadly reddish on the sides Jasiophthalmus. Third antennal segment deeply excised making the basal pro— cess long, general color chocolate brown cerastes. Third antennal segment not deeply excised a OE Medium sized species, ocelligerous tubercle present 20. Rather small species, no ocelligerous tubercle 21. Abdomen broadly and distinctly reddish on the sides epistatus. Abdomen narrowly or obsoletely reddish on the sides carolinensis. Prevailing color of the whole body bright yellowish bicolor. Prevailing color of the thorax and abdomen black, thinly dusted with grayish pollen ohioensis- 48 OHIO STATE: ACADEMY: OF SCIENCE. TABANUS ATRATUS Fabricius. Length 16-28 mm. The male and female of this common species are easily associated as they differ only in sexual characteristics. The whole insect is uniformly black and the thorax and abdomen in well preserved specimens are thinly covered with a whitish. dust which is easily rubbed off when specimens are not properly cared for. It cannot be confused with any species recorded from Ohio but the smaller specimens resemble wiedemanmi very closely. The wider front, the longer basal process of the third antennal segment, and the shape of the frontal callosity, which is square in wiedemanm and wider than high in atratus, are distinctive characters. Its much larger size and less shining color distinguish it from lugubris. Habitat: Common all over Ohio. Never numerous enough to be a particularly striking pest, but specimens have been taken in every month from June to Sep- tember, so that it is one of the species one may expect to see at any time during the summer. The eggs are deposited around marshy places on grasses and sedges, and the larve are to be found by digging in the mud. Larve are easily kept in confine- ment for months, and: feed on various invertebrate forms. Fish- worms seem to suit them well, and they have no hesitation in eating their own species, therefore, in rearing each larva must have a separate cage. In one instance where I placed a larva in the same cage with a pupa it was not long before the former bored through the covering of the latter and began feeding upon the soft inner parts. The larve push through the soil in all. directions in search of food, and the earth in the breeding cage where an active larva is confined usually proves that it is capable of finding everything that will sustain life before giving up in despair. TABANUS BICOLOR Macquart. Length 10-18 mm. Whole insect bright yellowish but thorax and a rather wide middorsal stripe on the abdomen darker than the other parts. Eyes pilose but no ocelligerous tubercle present in either sex. Antennae, palpi, proboscis and legs yellow, dorsum of thorax including the. scutellum brown in ground color but uniformly covered with yellow pollen; wings hyaline with yellowish veins; middorsal stripe of the abdomen brown, also covered with yellow pollen, usually widest on the first segment and gradually narrowing to the end of the abdomen or sOmetimes slightly widened again on the last two or three segments. The male and female are marked alike, but in the latter sex there is a tendency for the dark color of the abdomen to be more diffuse with fies not plainly apparent. Habitat: Sandusky and Danville: The bright yellowish color of this species is Pacenane It‘ has not been observed annoying stock. Most of my specimens were taken by sweeping in grasses in marshy places. dart) TABANIDAS OF OHIO. 49 TABANUS CAROLINENSIS Macquart. Length 12-15 mm. Eyes pilose; a small ocelligerous tubercle pre= sent, palpi pale, antenna reddish, annulate portion of the third seg ment black or in some specimens the black of the antenna is more extensive, including a large part of the third segment and the superior angles of the first and second segments. Thorax black with obsolete gray stripes, thinly gray pollinose, and clothed, especially on the sides, with gray pile; wings hyaline with base and costal cells pale yellowish, veins brown; legs reddish brown, tarsi and apices of all the tibiae darker; abdomen above brown, lighter colored on the sides, each segment we gray hind margin which expands into a small ‘triangle at the middle. Female: Subcallus denuded, shining brown or blackish, communi- cating with the frontal callosity which is rather small and separated from a linear denuded spot above it by a pollinose interval; vertex in the region of the ocelligerous tubercle denuded, shining brown. Eyes pilose, but this is rather difficult to see if not aided by a strong lense. Male: Subcallus not denuded; eyes plainly but short pilose; head not noticeably larger than in the female. Habitat: Ironton, Cincinnati, Newark and Medina. The abdominal markings are variable and therefore hard to describe. The change from reddish to black is very often so grad- ual that it is hard to say where the one color ends and the other begins. The gray posterior margins of the segments are very narrow, and the middorsal row of triangles very small. The de- nuded subcallus of the female in conjunction with the hyaline wings is sufficient to separate it from related Ohio species. It is close to rhombicus of the western states. TABANUS CERASTES Osten Sacken. Length 14-16 mm. Eyes pilose, palpi pale, first two segments of the antenna reddish with black hairs; third segment with a very prominent basal process, apex of this process and annulate portion:black, remainder reddish; thorax brown with five rather prominent gray stripes, scutelluny uniform brown; the vestiture of the thorax and scutellum give a grayish appearance; wings hyaline, veins brown and costal cell smoky; legs brownish with the tarsi and apical part of all the tibiae darker. Abdomen above dark brown, with a middorsal row of gray triangles, a row of prominent gray spots on each side, and gray posterior margin on each ‘segment. Female: Frontal callosity -shining brown. and ‘nearly square, . as. wide as the front, and with an elongate denuded spot above it; sides of the front parallel. Male: Head noticeably lareer than in ‘the female, but the colar- ation does not differ from that sex. Habitat : Hanging Rock, on. the Ohio River, May 29, rest- ing on foliage. This species is very mach like. some Nenere with pilose eyes, but both sexes are readily distinguished , by ,the very, prominent basal process on the third segment of the antenna. 50 OHIO STATE ACADEMY OF SCIENCE. TABANUS COSTALIS Wiedemann, Length 12-14 mm. Palpi yellowish, antennae brownish with the annulate portion darker; thorax including the scutellum uniformly grayish yellow pollinose; legs largely black, base of front tibiae and the middle and hind tibiae except at apex yellowish; wings hyaline with the costal cells yellowish, veins yellowish; abdomen above alternately striped with black and grayish yellow. Female: Frontal callosity black, above with a very much narrowed prolongation the part of which adjacent to the callosity is sometimes obliterated leaving the upper part as a separate spot. Male: This sex is much like the female and easily associated wie it, but there is a tendency toward obliteration of the distinct markings of the abdomen, the black of the female is replaced by brownish and the stripes may blend so that the whole base of the abdomen is prac— tically one color. Habitat: Common all over Ohio. This species may be confused with nigrovittatus, sagar and fulvulus, all of which have the yellowish costal cells. The last two are usually larger than costalis, and the spots on the sides of the abdomen above are not contiguous; the former has the apex of the third tibia reddish, while costalis has the same part black. So far nigrovittatus is known from the Atlantic coast only. The green-headed fly, as costalis is called, is one of our worst stock pests. It is most abundant during August, when a large number of other annoying flies are numerous. TABANUS EPISTATUS Osten Sacken. Length 14-16 mm. Eyes pilose, ocelligerous tubercle present; thorax black with rather prominent gray stripes; wing hyaline with extreme base, costal cells, and veins brownish, abdomen broadly reddish on the sides. Female: Subcallus often although not always denuded; palpi dis- tinctly thickened and rather short, front gradually widened above, frontal callosity small, shining brown, rounded above, and separated - from a linear shining spot above it by a pollinose interval. Legs brown, femora lighter than the other parts. Male: Subcallus not denuded in the specimens before me, head rather small, eyes distinctly pilose; palpi short and thick. Habitat: Sandusky; taken in the tall grass on the border of a marsh July 6th. This species is very close to affinis, but easily separated from it by the enlarged palpi. The palpi in afimis are long and slender. The color of the abdomen is variable, in some specimens there is a distinct black middorsal stripe, but in others this stripe is more or less broken up by the enctoachment of the reddish. TABANIDA OF OHIO. 51 TABANUS GIGANTEuS Degeer. Length 22-25 mm. Palpi pale, atennae reddish; thorax reddish brown with some darker stripes, and thinly clothed with gray pollen, scutellum dark at base reddish at apex, wings uniformly reddish brown, legs reddish with tarsi darker than the other parts; abdomen above dark brown, approaching black with gray hind margins to the segments. Female: Front quite narrow, yellowish pollinose; frontal callosity shining brown, not quite as wide as the front below, gradually narrowed on upper half and extending above into a linear prolongation which reaches more than half way to the vertex. Male: Colored like the female, head rather small; eyes composed of large and small facets but the difference in size not so great as in most other species. Habitat: Wauseon, London, Newark and Cincinnati. The species occurs late in the season, and I have never found it abundant, though it appears to be widely distributed. Its color and large size easily separate it from all North American species except americanus, and that species has hyaline wings with the costal cell dark brown. TABANUS LASIOPHTHALMUS Macquart. Length 13-15 mm. Eyes pilose, ocelligerous tubercle present, thorax black with narrow gray stripes which are not prominent; wings hyaline, cross veins and bifurcation of the third vein margined with brown. Abdomen broadly reddish on the sides. Female: Subcallus denuded, shining black; frontal callosity also shining black, as wide as the front, and separated from a denuded spot above by a pollinose interval; front slightly widened above. Male: Subcallus not denuded, eyes very plainly pilose, head about equal in size to that of the female. Habitat: Common in all parts of the state from May 15 to June 15. Very easily recognized by its pilose eyes: in connection with the denuded subcallus and brown margins to the cross veins and bifurcation of the third vein. TABANUS LINEOLA Fabricius. Length 12-15 mm. Palpi white, antennae reddish, annulate portion of third segment darker; thorax brown and gray striped, the latter color not. prominent; wings hyaline; legs reddish, apex of the front. tibia plainly, apexes of middle and hind tibiae faintly , and all of the tarsi dark brown; abdomen above brown or black rae three prominent, gray stripes. The males and females of this species are easily associated. In the latter sex there is sometimes a confusion of colors; the dark is replaced by reddish but the gray middorsal stripe is always prominent in all well preserved specimens. 52: OHIO STATE: ACADEMY OF’ SCIENCE. Habitat: Common all over Ohio. This and costalis are near together in size, but the hyaline costal cell and gray striped thorax distinguish lineola. It is an eens pest during the first part of the summer. i TABANUS LONGUS Osten Gadeee . Length 14-15 mm. General color brownish, form Seek elon- gate; palpi white with short hairs, part of which appear black; antennae reddish, third segment black on apical part; thorax brownish with faint grayish stripes, wings hyaline, legs brownish, tibiae especially the ‘last four segments darker; abdomen above brown with narrow, gray hind borders to the segments ; a row of faint elongate spots on the middorsal line, these form a continuous row and therefore take on the appearance of a stripe, each of the first five or six segments of the abdomen have on either side a small somewhat oblique spot which does not touch either margin. Female: Front slightly wider above, clothed with grayish yellow pollen; frontal callosity nearly square, dark brown, and either united or separated from a shining spot which lies above it and which appears to be the upper part of the. linear prolongation seen in many species. Male: Like the female except in sexual characteristics. Habitat: Medina, Ohio, where it is common and often ob- served on horses. TABANUS NIvosus Osten. Sacken. Length 12-14 mm. -Palpi pale yellow, antennae black, five narrow gray stripes on the anterior part of the thorax, these are obsolete behind, wings hyaline with brown veins, legs black, tibiae more or less reddish; abdominal segments above with very narrow gray hind borders which’ expand into small gray triangles in the middle, prominent gray markings on the sides of the segments, these markings get smaller gradually from: before backwards, and outwardly from them on each side is a row of black spots which vary in size in different specimens. Female: Sides of the front parallel, frontal callosity brown, nearly as wide’ as the front, and above with ‘a linear Dele eso which reaches half. way to the vertex. Aa) ayete Male: The two sexes are easily necoeiated but ‘re male usually. has most gray on the abdomen. Habitat: Sandusky, where it is common. ‘This species resembles*vivar somewhat, but the pale yellow on in both sexes, the parallel sides to the front in the female’ and the lack of prominent gray stripes on the thorax are char acteristic of nivosus. It appears to be partial to stagnant water, while vivax breeds in swift flowing streams. It is one of «the: Ohio species which readily attacks nan, and is Somewhat of an, annoyance at the bathing beach, following out over ie water: 8, far as one is pleased to go. Tie ere cere iat 13k 4 DABANIDAt:OF (OHIO, / 53 -TABANUS OHIOENSIS Hine. Length 10 mm. ‘Opaque black, eyes pilose, legs pale except the bases of all the femora which are black; wholé body clothed ‘with rather long gray hairs and a thin dusting of: grayish pollen: Female: Front and face very pale yellowish pollinose, palpi pale, antennae yellow; irontal callosity and ocelligerous tubercles wanting, wings hyaline with pale yellowish veins, abdomen with just a trace of red on the sides of the first two segments, otherwise dark and the gray hairs on the posterior border of each segment above gives the appearance of the segments being margined with gray posteriorly. . Male: Abdomen plainly red on the sides of the first three segments; otherwise colored as in the female. Habitat: Columbus, Danville and Medina. This species belongs to the same group with bicolor and tho- racicus, but its much darker color serves to recognize it readily. Like bicolor if frequents marshy places, and is most readily pro- cured by sweeping in grasses growing in such puaces. TABANUS PUMILUS Macquart. .., Length 8-10 mm. First segment of the atennae and annulate por— tion of the third black, thorax black with distinct gray stripes, wings hyaline; abdomen above black with narrow gray margins to the seg— ments, a middorsal row of gray triangles, each in connection with the ‘posterior margin of its segment, and on either side of this row of tri- angles a row of small nearly round gray spots noné of which touch either margin of the segments. Female: Front distinctly wider above, frontal callosity shining Wee nearly square and occupying nearly the whole width of the front. Abdomen sometimes reddish on the sides. Male: Head large, the division between large and small facets well marked and there is a striking difference in the size of the facets. The abdomen in some specimens has a suggestion of reddish on the sides. Habitat: Medina, Danville and Cincinnati. In appearance very much like fratellus of the Northwest, and sparus described from New Hampshire. In the latter species the gray spots on the sides of the abdomen above are larger, and on the second and third segments are broadly contiguous with the hind margin. The third antennal segment is noticeably narowed in fratellus, while in pumilus it is wide with a distinct basal pro- cess. In the field this species has habits much like a Chrysops for it persists in its attacks on the collector. Specimens are easily taken with the net at such times. It is often observed annoying horses and cattle. ae ne i eM te vids Dively 54 OHIO STATE ACADEMY OF SCIENCE. TABANUS REINWARDTII Weidemann. Length 14-19 mm. Eyes pilose, palpi pale yellowish, antennae black, sometimes first segment reddish; thorax brownish, thickly clothed with rather long gray hairs, above with white stripes; legs largely dark colored but the basal part of all the tibiae yellowish, this color is least extensive on the anterior pair; wings hyaline with ‘the cross veins and bifurcation of the third vein margined with brown; abdomen with a middorsal row of prominent gray triangles and on either side of this a row of oblique gray spots which connect with the narrow gray hind margins of the segments. Female: Frontal callosity shining black, scarcely as wide as the front, slightly higher than wide and with a linear prolongation above; sides of the front parallel. Male: Thorax more thickly pilose than in the female, head only slightly larger, eyes very distinctly pilose. Habitat: Cincinnati and Medina. TABANUS STYGIUS Say. Length 20-22 mm. Third segment of the antennae red at base, blackish at apex, first and second segments and palpi dark; legs black, often the tibiae reddish at base; wings yellowish brown with the posterior border approaching hyaline, a brown spot on the bifurcation of the third vein, also the transverse vein closing the discal cell margined with brownish; abdomen uniform black. Female: Thorax dorsally plainly whitish pollinose with more in- tense longitudinal lines. Male: Thorax dorsally uniform grayish brown in well preserved specimens. Habitat: Sandusky, Wauseon and Cincinnati. It is closely related to nigrescens, but in the specimens before me the wings have more color on the anterior part than in that species. In nigrescens the dorsum of the thorax is shining black, thinly whitish pollinose on anterior fourth in both sexes, there- fore the difference in color in this region is distinctive when dealing with perfect specimens. However, the males are very close at best, and easily confused. It resembles punctifer somewhat, but this species has the front tibia white on basal third and the thorax uniformly white in both sexes. The females oviposit on Sagittaria growing in shallow water at Sandusky, and on a previous page I have fully described this process. TABANUS SULCIFRONS Macquart. Length 18-21 mm. Palpi brownish, antennae nearly black with the third segment brownish at base; legs dark, bases of tibiae darker; wings with a distinct brownish tinge, cross veins at the end of the discal cell and bifurcation of the third vein margined with brown. TABANIDA OF OHIO. 55 Female: Front with parallel sides, frontal callosity shining brown, not quite as wide as the front, nearly square and with a linear prolon- gation above. Segments of the abdomen above with prominent gray, hind margins which expand into large gray triangles in the middle; usually a black mark on the anterior part of each of the second and third segments at the apex of the gray triangle. Male: The division between the large and small facets of the eye prominent; head slightly more convex than in the female but nearly of the same size, coloration of the whole body the same as in the female. Habitat: Common in all parts of Ohio in August. This species is very near exul and abdominalis, neither of which have been recoznized from this state, although it it within their range. The large, gray, abdominal triangles are characteristic of sulcifrons. In abdominallis the first posterior cell is closed, and the front in the female is noticeably narrowed. In exul the head of the male is sub-hemispherical: and the abdominal triangles are moderate. Regarding its relationship with variegatus see under that species below. In certain parts of Ohio this species is so abundant that it is one of the worst of stock pests. TABANUS SUPERJUMENTARIUS Whitney. Length 16-20 mm. This species resembles trimaculatus in many respects but the following differences may. be noted: the legs are uniformly black or at least dark with occasionally a suggestion of reddish at the bases of the tibiae; the wings are uniformly subhyaline with no darker margins to the cross veins and bifurcation of the third vein; dorsally, abdominal segments two, three, four and five each with a very small white triangle in connection with the middle of the posterior margin; ventrally, there is not the contrast between the colors of the median and lateral areas exhibited in trimaculatus. The male and female are colored alike except in the specimens before me the thorax is not so distinctly white in the former as in the latter. Habitat: Akron and Cincinnati. TABANUS TRIMACULATUS Palisot de Beauvois. Length 16-19 mm. Antennae dark, nearly black, palpi yellowish; thorax dorsally with whitish ‘pollinose stripes and brownish intervals, scutellum uniformly whitish pollinose; legs black except base of all the tibiae which are white; wings hyaline, costal cell brown, bifurcation of the third vein, cross veins and sections of veins that have a transverse direction margined with brown; abdomen dorsally black with a large white triangle in connection with the middle of the posterior margin of each of segments three, four and five; abdomen ventrally white on the sides and a wide black median stripe. The male and female differ only in sexual characteristics. Habitat: All sections of the state during the latter part of May and the first half of June. Occasionally as late as July first. The three prominent triangular white markings of the ab- domen easily distinguish this species. Soli OHIO STATE ACADEMY OF SCIENCE. TABANUS VARIEGATUS Fabricius. Length 20-23 mm. This species is much like sulcifrons, but the gray triangles in the middle of the abdominal segments are smaller than in that species and the disk of the wings, at least in the female, have a suggestion of whitish. Female: Gray triangles of the abdomen prominent, nese on the second and third and sometimes the fourth segments preceeded by a black mark, a blackish marking at the lateral margin of each abdominal segment and last two or three segments largely dark. Male: What is most probably the male of this species as it was taken in the same locality with the females may be described as follows: colored much like the female and therefore much like sulcifrons, but the middorsal row of triangles are very small and preceded by black markings on the second, third and fourth segments; cross veins at the apex of the discal cell, and the bifurcation of the third vein narrowly margined with brown; the facets of the eyes nearly uniform in size, those on the disk of the eye are slightly larger than at the margin but the difference is no where near as striking as in the male of sulcifrons. Habitat: Central Ohio. TABANUS VENUSTUS Osten Sacken. Length 13-15 mm. Antennae and palpi brownish, thorax with white stripes and brown intervals, scutellum uniformly whitish pollinose; wings variegated with brown and hyaline as follows: base hyaline as far out as the humeral cross vein, beyond this a brown band extending from costa to posterior margin and occupying about half of the anal cell, then follows a shorter. band partially confluent with the former and surround-— ing the cross veins which close the basal cells, the brown apex of the marginal cell, is confluent across the first submarginal with the prominent brown, spot at the bifurcation. of the third vein, the transverse veins closing the discal cell are broadly margined and a lighter brown space follows the posterior border of the wing to its apex where it unites with the darker brown in that region. Female: The posterior margins of the abdominal segments above are gray and expand into prominent triangles in the middle of segments two, three and four. In the middle of the venter is a wide brown stripe bordered on each side by lighter. Male: This sex is like the other except the dorsal markings of the abdominal segments are expanded laterally and give the appearance of wide posterior margins. Habitat: Cincinnati, Ohio, June 25. Taken by Mr. Charles Dury, who has donated a male and female to the University collection. This is the only species of Tabanus in our fauna with the wings variegated on basal half. _TABANUS VIVAX Osten Sacken. Length 14-16, mm. Slightly elongate, antennae black, first segment partially reddish ‘especially in the female, face clothed with gray hairs afd pollen, the latter having a yellowish tinge; thorax with five-gray: stripes separated by black, scutellum uniformly black ‘with gray-hairs on the iety toscali 0) CAPR Si an SoCo tier ah sary J Tes TABANIDA OF OHIO. 57 -posterior margin and with darker hairs on the basal part, wings hyaline, legs somewhat variable but inclined to black with the basal part of the tibiae yellow, abdomen with a prominent middorsal row--of gr ay triangles cand gray spots oneach.side. Female: Palpi light yellow front noticeably Fararaus oily widened above, frontal callosity below nearly as wide as the front, about square, above witha narrowed extension which reaches. half way to.the vertex; segments of the abdomen above with gray. posterior--margins which expand into prominent triangles in the middle; first two segments nearly uniform gray on the sides, next three segments » with extensive gray markings enclosing a black ‘patch on the anterior part of the segments, last three segments largely black on the sides; the black on the second segment takes the form of two. spots connected before and produced laterally so as to include the anterior margin of the segment; on the following three segments the black takes the form of four spots, the middle two of which are united before. “Male: Antennae black, palpi darker than in the female, and the legs may be said to be uniform black except that the bases of all the tibiae are pale; abdomen with more gray than in Bue other sex but the a Re ment is the same. ; S ‘Habitat: Oxford, Geoteesvilie Londo mesille and Medina. The two sexes: are easily associated. The species may be confused with nivosus, coffeatus, longus and some of the species with hairy eyes, but these latter need not enter into the case if care is exercised. From longus its uniform black instead of red- dish color is distinctive, coffeatus has only the posterior margins of the segments white on the sides, and a reference to the descrip- tion of mivosus above will reveal the difference between vivax and that species. The larve live in streams, and the females have been observed ovipositing on stones in ripples. ~The egg mass is not so convex as in many other species, but covers more surface. OHIO STATE ACADEMY OF SCIENCE. Flate I. a HINE on ‘‘ Tabanidze of Ohio.”’ PLATE I. All the figures were taken from Tabanus sulcifrons. Fig. 1. Anterior of head of male. The greater part of this view is occupied by the compound eyes on the surface of which are to be seen the transverse green bands which are represented by heavy black lines. The space included within the dotted lines represents the location of the enlarged facets. a, vertical triangle; b, first segment of one of the antennae; c, frontal triangle, a plus c form the front;, d and e, face, e, cheek; f, one of the maxillary palpi; g, proboscis; h, labella. Fig. 2. Anterior view of head of female. c, front which includes. all the space down as far as the base of the antennae; b, frontal callosity with linear extension above; a, subcallus; d, f, face, f, cheek; e, basal segment of antennae; g, maxillary palpus. Fig. 3. Side view of proboscis and maxillary palpus of female. c, proboscis; d, labella; a, basal segment; b, apical segment of a maxillary palpus. Fig. 4. Mouth parts of female. a, apical segment; b, basal seg— ment of maxillary palpus; c, maxilla; d, mandibles; e, hypopharynx;, f, labrum. Fig. 5. Mouth parts of male. a, b, maxillary palpus; c, maxilla;. d, labrum; e, hypopharynx. Fig. 6. Dorsal view of segments 8, 9, 10 of the male abdomen. n, p, q, segments 8, 9, 10, respectively; 0, basal segment of clasper. Fig. 7. Ventral view of Fig. 6. n, q, r, segments 8, 9, 10 respect— ively; 0, p, segments 1 and 2 of claspers respectively. Fig. 8. n, 0, p, dorsal view of segments 8, 9, 10 of female abdomen. respectively. Fig. 9. Ventral view of Fig. 8. gq, infraanal plate. Fig. 10. Same as Fig. 6, showing different position of male claspers. Fig. 11. Same as Fig. 7, showing different position of claspers. The second segment of the. claspers is folded under the first. Fig. 12. Last segment of female front tarsus. a, pulvillus; b, claw; c€, empodium. Fig. 18. Last segment of male front tarsus lettered as in Fig. 12. Fig. 14. Female antenna. i, j, k, segments 1, 2, 3 respectively. The third segment is prominent at base and composed of five annulations,. the basal one of which is longer than the others combined. Fig. 15 Male antenna. OHIO STATE ACADEMY OF SCIENCE. HINE on ‘‘ Tabanidze of Ohio.’’ Plate IT. ‘ ; d ; PLATE II. I; Il, III, 1V, V, VI, first, second, third, fourth, fifth, sixth longitudinal veins respectively; VII, costa or costal vein; VIII, auxiliary vein; IX, transverse shoulder vein; X, small cross—vein; XI, posterior cross-vein; XII, anterior branch of the third vein; XIII, posterior branch of the third vein; XIV, anterior intercalary vein; sev anterior branch of the fifth vein ; Sav posterior intercalary vein; XVIL, anterior basal transverse vein; XVIII, posterior branch of the fifth vein. -a, b,-c, first, second and third costal cells respectively, or costal cell; d, marginal cell; e, f, first and second submarginal cells respectively ; Sena eves Ketan st. second, third, fourth and fifth posterior cells respect— ively; 1, discal cell; m,n, first and second basal cells respectively; o, anal cell; Pp, axillary cell. 1; anal angle; 2, alula; 3, antitegula; 4, tegula; 5, axillary in— cission, ~ i The drawing is taken from the wing of Tabanus Stygius Say. INDEX TO TOPICS. Introduction, : Eggs and Egg-laying, Larva and Pupa, : Field Habits of the Adults, Anatomy of Tabanus sulcifrons, Males compared with Femaies, Artificial Remedies, Natural Enemies, Bibliography of tees ee Catalogue of Species, 3 A Systematic Treatise of Ohio ahaa Explanation of Terms, Family Characters, : : Key to the North American Geneza, INDEX TO SPECIES. PAGE. PAGE MBIA SOPSia cei: eons nisiciie (uve ie eds eke 22 Palbanlisusarvevasanncinstsir gaan AO IDPUOUMEUS so oacuce cs) dasnoe 34 ANGIE, o dcotoacocoesceacod 48 Callidus eee Ne ahaa A Hise 35 bicolor...... CNA NES EEO SSO 48 Cele rere ey cae varsnste ed ayaigceaaiiene 36 carolinensis...¢.......3.:.. 49 realli axan ape Sate these 3) Sain cues 36 GSMS. cadaalscncseccoaN 49 leave GIUSU MS exte atire te 8) clene 37 COStATIS Haesu weucis ees areas 50 DARGIS code comeesMoeoaaes 37 GISMUSsssaodao0acasccuoe 51 HOON EIS 5 ym Chena OR Ree 38 PANTIES; Eood sooo coop OND 51 INDEX 6 gio. 0 ocr eee 39 lasiophthalmus............ 51 MIAO SCHUS orc ysteraccelehs) overs te se susie 39 WPCA 5 cosaeandccvocducdes 51 KOSREINS so o000000K0e 40 IGMAVS Sascsbocooscuseonve 52 TOOKOVNNOBS, c4ocandcedacocee 4o TIV.OSUS 4 -ccater a cpeisvetonese econ: 52 TAT PCTE eaeiareqwis ce eicteiere te ceveneteens AI OhIOENSISHE eee cme oasis 53 ODSOLEEUS Hato e icivocisieses 42 PUM US rae erersioe ici ciel 53 SACOM rere ui ors orale stats! 2 42 GEVIWAEG Eline eeretotel- lee 54 SUMALUS mises selec nents: 43 OsBUS Coecooauduscemeoteo 54 [USTED IAEA bolas Gone malt SuleiiLOnsmees et eect 54 AVA LEUE UT Sy seerse eons sett iam el 44 superjumentarius.......... 55 Goniops aaa, ee ale are RNa 45 trimaculatus .............. 55 chrysocoma............... 46 variegatus............----- 56 JPBY OVERS PE See tear e Ia eS 45 VEMUSEUS: ioicce cafafeie eiciciose «siete 56 oa OHIO STATE ACADEMY OF SCIENCE. Special Papers No. 6. The Birds of Ohio A REVISED CATALOGUE BY LYNDS JONES, M. Se. Ae Published by the Academy of Science with the Emerson McMillin Research Fund OCTOBER, 1903 acetate cits ata Cn tial ie ae ar Eh i be @Geneva af “hyo ° Ni USRSraon : if | ! (eed , oem rs ' * | WILDIAMS ° 4 at: 7+ Wauseon H M a) | —-_- -l — Napoleon BM NS Ae ee = > - : s j : 9] mm SS Dr UY: : Pade ot? ‘ ! | sMerralnece | Snawne fo oY Gata « | ay TRUMBULL a st oy Detianced H | Toe peau ut9 : . x oe Exrane ¢e Nelson , , HEN K > A é . 2 ad ie h tt I1— -- = 1 a W GarrettsyiRe I ; QWwarrdn & > ‘ $ 4, 3 5 AUODING Er l. |— _- Laer || SE ORarg . ,O,- fe PUTNAM . | Fostoria za River ' Findlay | ‘erst a ouawad I =e sae ail ; a bre. ae peer aaee ' la ‘ 7 ~ " ffl ef =I HANCO al / TKS y, i ‘ shh, my Alliances | _ygySateme .. | ie L| K + COLUMBIA iat VAN WERT A LL E JN -_—-- ell | a ou “a Limao Ss : Bee: G | Fen : — “a AJUGLAZ RLON A : ; Lae | ; ‘lea 1 '@ i}, -