74 Journal New York Entomological Society. [Vol. xxv. 



oming and Medicine Hat, Alberta, Canada, Oct., 1911 (J. R. Mal- 

 loch). 



Anthrax signatipennis new species (fig. 10). 



Thorax opaque gray black. Abdomen red with a median dorsal black 

 stripe, which varies in width in different specimens and does not reach the 

 end of the seventh segment. The first segment is all black. Scutellum red- 

 dish, the base black. Vertex black. The black of the occiput varies in extent. 

 Venter reddish yellow. Tomentum of mesonotum golden yellow. In most of 

 the specimens the yellow tomentum of the abdomen is sparse. Front and 

 epistoma with short black pile varying somewhat in extent, the rest of the pile 

 on the head is pale yellow. The tufts of black pile on the sides of the ab- 

 dominal segments are quite noticeable. Wings brown, marked with hyaline 

 spots (see fig. 10). The hyaline spot in the middle of the wing is quite often 

 narrow and does not reach the wing margin. The anal and axillary cells are 

 both dark brown. Legs yellowish with black bristles, the tarsi darker, espe- 

 cially the front pair. First two joints of antennae yellowish red, the last joint 

 black (fig. 19). Length 10.5 to 13 mm. 



Type. — U. S. N. M., Cat. No. 20740. Seven specimens. All in 

 U. S. N. M. 



Habitat. — Type from Yellowstone Park, Aug 12, 1907 (W. Rob- 

 inson). Qne specimen from Miles City, Montana, Aug. 24, 1915. 

 Three specimens from Reno, Nevada, Sept, 2, 1915 (H. G. Dyar). 



The Nevada specimens differ slightly, one having more gray color 

 to the wings, the hyaline spots being smoky. In the other two speci- 

 mens the dorsum of the thorax, abdomen and scutellum is thickly 

 covered with yellow tomentum. Mr. Nathan Banks compared these 

 specimens with material in Museum of Comparative Zoology and 

 found them to be identical with specimens labelled " new species " 

 by Osten Sacken, from Shasta Co., Cal. 

 Anthrax willistoni Coq. 



Anthrax zvillistoni Coq., Trans. Amer. Ent. Soc, XIV, 181. 



Coquillett mentioned as a synonym of this species. Anthrax sp. 

 nov., near fuliginosa Lw. Williston, Can. Ent., Vol. XI, p, 216. 



" Differs from alpha in that the middle part of the veins between the first 

 and second submarginal cells and between the discal and third posterior cell, 

 and sometimes that between the third and fourth posterior cells are not bord- 

 ered with brown, and the axillary cell, except its base and apex is wholly hya- 

 line." Length 11 to 14 mm. Cal., N. M., Colo. 4 specimens. 



This species is near poccilogaster O. S. and arethusa O. S. A 

 specimen labelled "Near Lander, Wyo., 5,000-8,000 ft. Aug. (Roy 



