210 E. T. CRESSON. 



together, the fourth as long as the first three taken together; wings faintly 

 tinged with fuscous; legs slender, simple ; abdomen above clothed with black 

 pubescence, that on the two basal segments and sometimes the apex more or 

 less, pale; venter with pale pubescence. Length .50 — .55 inch. 



Hah. — Nevada, (Morrison). Numerous specimens. This is allied 

 to Edioardsii Cress. 



HeliSSOdes acerba. — J- — Black; face, cheeks, thorax and base of 

 abdomen clothed with a dense pale ochraceous pubescence; wings clear, 

 slightly dusky at tips; legs with black pubescence, that on femora beneath 

 more or less pale; abdomen with short black pubescence, that on first seg- 

 ment pale, apical margin of fourth segment, and sometimes the lateral apical 

 margin of the third, with a band of appressed white pubescence, sometimes 

 both are obsolete; occasionally the lateral apical margin of the fifth segment 

 is whitish. Length .50 inch. 



Hah. — Nevada, (Morrison). Seven specimens. 



Anthopliora carbonaria. — 9. — Broad, robust, black, clothed with a 

 deep black pubescence, that on clypeus more or less, labrum, posterior tibiae 

 and base of tarsi outwardly, pale ochraceous; wings faintly dusky at tips; 

 abdomen shining, thinly pubescent, apical segment with a pale ochraceous 

 pile. Length .60 inch. 



Hab. — Nevada, (Morrison). Two specimens. 



Anthophora peruigra. — 9. — Small, black, clothed with black pubes- 

 cence, that on each side of scutellum slightly mixed with pale; wings dusky 

 at tips; abdomen shining, sparsely pubescent, the fifth segment above and 

 beneath clothed with a fulvous pubescence. Length .45 inch. 



Hah. — Nevada, (Morrison). One specimen. 



Anthophora ignava. — 9.— Broad, robust, black; head and thorax 

 clothed with a dense cinereous pubescence, that on vertex and mesothorax 

 more or less strongly mixed with black, so that sometimes the mesothorax 

 appears sooty; third joint of antenuje very long and slender, dilated only 

 at tip; wings slightly dusky; legs with black pubescence, that on anterior 

 femora beneath and on posterior tibiae and base of tarsi outwardly, cinereous; 

 abdomen shining, segments one and two, lateral apical margins of 3 — 5 and 

 sides of venter clothed with cinereous or whitish pubescence. Length .56 — 

 .60 inch. 



Hah. — Nevada, (Morrison). Eight specimens. This may prove to 

 be the 9 of pacijica Cress. 



Anthophora luaculifrons. — 9.— Form' small, compact, head broader 

 than thorax, black; head, thorax and legs clothed with a dense cinereous 

 pubescence, sparse on vertex and disk of thorax; spot on middle of face 

 beneath antennse, broad anterior margin of clypeus, sometimes a narrow 

 stripe down the middle, labrum and mandibles except tips, yellowish-white ; 

 tegulse dull testaceous; wings hyaline; tips of tarsi pale ferruginous, apex of 

 first joint of posterior pair with a comb-like tuft or feather of black pubes- 

 cence; base of abdomen thinly clothed with white pubescence, the first 



