HORSEFLIES OF THE SUBFAMILY TABANINAE 63 
Distribution —Washington to Los Angeles, Calif., and New Mexico. 
April 27 (Berkeley, Calif.) to August 11 (Seattle, Wash.). In the 
United States National Museum, nine females, two males. 
TABANUS FAIRCHILDI, new species 
(Fig. 19, B) 
Tabanus vivaz authors (not Osten Sacken). Hine, Ohio Nat. 4: 1-2, 1903; 
Ohio State Acad. Sci. Spec. Papers 5: 56-57, 1903; U. S. Dept. Agr., Bur. 
Ent. Tech. Ser. 12: 82-34, 1906; Schwardt, Jour. Kans. Ent. Soc. 4: 13-14, 
1931; Ark. Agr. Expt. Sta. Bull. 832: 57, 1936. 
Medium sized; dark gray, with three rows of gray spots on abdomen; antenna 
black, the first segment distinctly swollen above; wing hyaline; hair of hind 
tibia white. 
Female.—Length 138-16 mm. Eye bare or with very sparse, short pile, green, 
with a single narrow, diagonal, purple band. Frons three and one-half to four 
times as high as width at base, slightly widened above, gray, with brown on 
each side of median callus and tinged with yellow below it, with black hair, 
and a few yellowish hairs below median callus; basal callus dark brown to 
black, shiny, subquadrate, below as wide as frons and slightly narrowed above ; 
median callus black, about as long as basal callus and narrowly joined to it; 
vertex with abundant black hair, and often with a denuded black spot, but no 
tubercle. Subcallus yellowish brown, somewhat swollen. First antennal seg- 
ment orange brown to black, densely clothed with black hair, somewhat swollen 
above, aS wide as basal portion of third segment and somewhat projecting 
forward over second; third entirely black, with a distinct dorsal angle at base 
and only a slight excision ; basal portion longer than wide, the annulate portion 
intermediate in length between length and width of basal portion. Clypeus and 
genae below antennae light gray, with white hair. Second palpal segment 
stout, tapering to a point, white, with black and white hair. 
Mesoscutum and scutellum black, the former with narrow gray stripes of 
pollen; vestiture consisting of erect black hair, recumbent orange hair, and 
some erect white hair along anterior margin, above wing base and around 
~ seutellum ; prescutal lobe reddish, with black hair. Pleura, sternum, and coxae 
gray, with white hair. - Wing entirely hyaline, with dark-brown veins and 
stigma; venation normal. Femora gray, with white hair; tibiae pale reddish 
brown except for apical half of fore tibia and extreme apices of middle and 
hind tibiae, which are black; pale portions of tibiae with white hair, the hind 
tibial fringe well developed; tarsi dark reddish brown to black. 
Dorsum of abdomen black, with three rows of gray spots, a round spot on 
first tergite, followed by a row of distinct gray triangles, the triangle on second 
tergite largest and the others progressively smaller posteriorly ; sublateral spots 
smaller, somewhat oblique, and not touching hind margins of tergites beyond 
second; venter gray, with whitish incisures, somewhat darker medianly. 
Male.—Hye with areas of large and small facets not strongly differentiated, 
and the former not extensive; palpus stout, with blunt apex, usually grayish. 
Abdomen with sublateral gray spots larger than in female, those on second 
tergite considerably larger than median triangle and tinged with reddish. 
Coloration otherwise as in female. 
Type.—Female, United States National Museum No. 51963. Allo- 
type male and 16 female and 1 male paratypes, United States National 
Museum No. 51963; 6 female and 2 male paratypes, in the collection 
of Ohio State University; 1 male paratype in the Museum of Com- 
parative Zoology. 
Type locality —Taghanic, Ithaca, N. Y. 
Distribution—Type collected June 21, 1920; allotype, June 5, 1917, 
Great Falls, Va. (C. T. Greene) ; paratypes, New York, 9; Pennsy]l- 
vania, 1; New Jersey, 1; Maryland, 1; Virginia, 2; District of Colum- 
bia, 1; Florida, 1; Ohio, 5; Indiana, 2; Kentucky, 2; Oklahoma, 1. 
May 6 (reared from larva taken along Scioto River, Ohio) to August 
