90 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Family Bombyliid^. 



Anthrax a\ta,— continued. 



mentumof entire front golden yellow, all pile black; face sharply pro- 

 duced below, proboscis lies entirely within the oral cavity, the mar- 

 gins of which are luteous. The eyes, which are emarginate on the 

 posterior sides, are bordered behind with white tomentose, as with 

 inculta, back of which is a narrow space covered with dusky tomen- 

 tose, and this is fringed on posterior margin with short fulvous pile, 

 meeting the long, dense, similarly colored pile on the front of the 

 thorax. Bristles of thorax and scutellum yellow. Fifth and sixth 

 ventral segments of the abdomen are covered with black tomentose, 

 the fifth slightly margined behind with yellow; sparse black pile on 

 all segments of venter similar to that on the dorsal surface. 

 With reference to the dark areas of the wings, a description of the speci- 

 men in this respect is added here. Costal and subcostal cells, the 

 latter as far as tip of costal vein, the marginal for nearly half its 

 length, though faintly at base, and first basal cell clouded with a 

 fuliginous cast extending from base of wing, and which envelops the 

 basal bend of the second vein and the anterior cross-vein. The pos- 

 terior cross-vein bisects a circular dusky spot and faint dusky spots 

 appear at the base and furcation of the fifth vein, besides a streak 

 which extends along the anterior portion of second basal cell. Hal- 

 teres yellow with the tip pale, spoon-shaped. Length, 6.5 mm.; 

 wing, 6 mm. 



Anthrax alternata Say. Colorado, Denver and Colorado Springs; August, 

 agrippina 0. S. Colorado, Denver; August, 

 arethusa 0. S. Colorado, Manitou; August. 



Anthrax comparata, new species. Colorado, Colorado Springs; August, 1894. 

 Two types in the collection of the University of Kansas. 

 The specimens agree in size and general appearance with cinefacta Coq., 

 according to his description of that species, but differ in the follow- 

 ing respects: Face wholly black, without any groove in the middle; 

 legs wholly black. Pile of breast and coxae black, and bristles on mid- 

 dle of posterior margin of scutellum black. Sparse pile on abdomen, 

 at least such as remains on edges, and on the posterior margins of 

 the last three ventral segments, black. Otherwise these ventral 

 segments are black tomentose. Described from specimens which are 

 badly denuded, but still in condition to warrant the establishment of a 

 species. 



Anthrax muscaria Coq. Colorado, Denver and Colorado Springs; August. 



Anthrax nebulo Coq. Colorado, Denver; August. 



Agrees well with description, except that fore tibia9 are not completely 

 destitute of bristles, and size is larger, 12 mm. instead of 9 mm., but 

 being a female specimen, this difference may easily be allowable. In 

 comparison with senea Coq., to which the description refers, the first 

 antennal joint is larger than the second, and the third is conical in- 

 stead of subglobular at base. 



Anthrax sinuosa Wied. Kansas, Douglas county; July. —Colorado, Denver 

 and Colorado Springs; August. 



