158 MISC. PUBLICATION 305, U. 8S. DEPT. OF AGRICULTURE 
narrow apex, the anterior margin with a distinct angle. Proboscis scarcely 
longer than palpus. 
Mesoscutum discally and scutellum blackish, the former with narrow gray 
lines in usual pattern; margin of mesoscutum from humerus to scutellum yellow- 
ish brown. Pleura, sternum, and coxae gray tinged with reddish, with white 
hair, and some black hair above. Wing hyaline, the costal cell dark brown 
and all veins faintly margined with brown; venation normal. Legs dull orange 
brown, the bases of middle and hind tibiae and the tarsi slightly darker; 
hind tibial fringe black. 
Abdomen above blackish, the sides of tergites 1-4 yellow orange, leay- 
ing a broad, black, median stripe; a median row of narrow yellowish-gray spots 
and sublateral light-yellowish spots; venter dull reddish, darkened at base 
and apex. 
Male—Unknown. 
Type.—tn the American Museum of Natural History. 
Type locality —F ranconia, N. H. 
The specimen is labelled, “Collection of Mrs. A. T. Slosson.” The 
writer takes great pleasure in naming this species in honor of James 
M. Brennan, one of our jeading students of Tabanidae. This species 
lies on the border line between the orange-sided species and those 
with three rows of abdominal spots, but it 1s apparently quite distinct 
from any species in either of these groups. 
TABANUS ITASCA Philip 
(Fig. 77, A) 
Tabanus itasca Philip, Canad. Ent. 68: 149, 1936. 
Rather small; blackish brown, with three rows of gray spots on abdomen; 
basal callus and prescutal lobe yellowish brown; wing hyaline; subcallus 
pollinose; eye pilose; frons broad; palpus moderately stout basally. 
Ficukn 77.—Antenna, front view of head, and palpus of (4) Yabanus itasca and (B) 
T. atrobasis. 
Female—Length 18 mm. Eye pilose. Frons gray tinged with brownish, 
slightly more than twice as high as width at base, slightly widened above; basal 
callus shiny yellow brown, protuberant, slightly wider than high and nearly 
touching eyes; median callus dark brown, separated from basal callus, about 
half as wide as high, the height subequal to width of basal callus; ocellar 
tubercle orange brown, small but distinct; subcallus concolorous with frons. 
Antenna yellow brown, somewhat darkened apically; first two segments with 
black hair; third slender, the dorsal angle obtuse and excision shallow. Clypeus 
and genae light gray, with mostly white hair. Palpus pale yellow brown, 
with white hair and some black hair on second segment; second segment slightly 
swollen basally and tapering to an acute apex. Proboscis only slightly exceeding 
apex of palpus. 
Mesonotum dark brown, with five gray lines; prescutal lobe yellow brown; 
upper pleura and coxae gray tinged with reddish; lower pleura and sternum 
dark gray, the whole with white hair except some black hair on mesopleurite. 
Wing entirely hyaline, the venation normal. Legs light brownish, the apex 
of fore tibia and the tarsi darkened; hair of tibiae mostly whitish including 
hind tibial fringe. 
Abdomen above dark brown, with three rows of light-gray spots and hind 
margins with narrow bands; median triangles small, largest on second tergite; 
sublateral spots large, oblique, reaching length of tergites, except on second, 
where they do not reach anterior margin; venter uniformly light gray tinged 
with reddish, the hair white except for some black near apex medianly. 
Male.—Unknown. 
