138 Journal New York Entomological Society, [Voi. x. 



as long as the four preceding, palpi slender, sublanceolate, falcate, proboscis as long 

 as thorax, face receding below, eyes bare, hairs of occiput and cheeks yellowish- 

 white ; thorax, scutellum and fi'St abdominal segment opaque, densely gray pruinose, 

 covered with short, pale yellow hairs, remainder of abdomen polished, its hairs black; 

 wings grayish hyaline, strongly tinged with yellowish at base and along the costa, 

 first posterior cell closed, upper branch of third vein bearing a long appendage near 

 the base, calypteres white ; length i8 to 22 mm. 



Habitat : Sierra Madre, Chihuahtia, Mexico (head of Rio Piedras 

 Verdas, about 7,300 feet altitude). 



Ty/'c: Cat. No. 6310, U. S. N. M. 



Seventy-two males and forty females collected August iS to 27. 



Tabanus maculosus, sp. nov. 



Near aurantiacus but the dorsal dark vitta of abdomen interrupted, the whitish 

 median triangles confined to the first four segments, wings apically of a purer hyaline, 

 etc. Head black, front of female distinctly narrowing anteriorly, the callosity polished, 

 nearly square and with a linear or sublanceolate prolongation above, remainder of 

 head gray pruinose aud whitish haired except a spot on vertex and another near middle 

 of front of female which are blackish and with many black hairs; proboscis and an- 

 tenna; black, the first segment of the third joint of the latter with a low, blunt proc- 

 ess ; palpi slender, gradually tapering toward the apex, brown, its hairs yellowish- 

 white intermixed with a few black ones ; eyes sparse pubescent, purplish-brown and 

 marked near the middle with two transverse oblique greenish stripes, no ocellar 

 tubercle ; thorax black, mesonotum polished, its hairs black except five stripes and 

 those on the anterior end which are yellowish, the outer two stripes on each side 

 united at the suture ; pleura gray pruinose, its hairs yellowi.sh-white except a large 

 spot of black ones behind center of mesopleura ; scutellum black, its hairs concolor- 

 ous ; abdomen on sides of first four segments broadly yellow, polished, with chiefly 

 yellow hairs, the middle of each segment with a whitish pruinose, whitish haired 

 triangle surrounded in front and at the sides with a brown, black-haired, somewhat 

 A-shaped spot, the whitish triangles smallest on the first segment ; last three segments 

 black, somewhat polished, with black hairs, the sides narrowly yellow and with many 

 yellow hairs ; venter yellow, the last two segments largely brown; legs black, bases 

 of tibiae yellow ; wings hyaline, costal cell yellowish-brown, base of wing to discal 

 cell and along the costa tinged with smoky brown, a large brown spot on veins at 

 base of second submarginal cell and of each posterior cell, first posterior cell strongly 

 narrowed at apex, upper branch of third vein without an appendage, calypteres yel- 

 lowish-brown, knobs of halteres yellow ; length, 15 mm. 



Habitat : Same as the preceding species. 



Type: Cat. No. 631 1, U. S. N. M. 



One male and six females collected May 31 to June 3. 



Family 1>ombylid^. 

 Anthrax extremitis, sp. nov. 



ISlack, the knobs of the halteres yellow ; face greatly produced below, third an- 

 tennal joint elongate conical at the base, hairs of the two preceding joints of the front 



