256 Revision of the Bombylid Genus Aphoebantus. 



15. Black tomentose crossbands of abdomen interrupted in the 



middle 17 



Black tomentose crossbands entire, never interrupted in the 

 middle brevistylus n. sp. 



16. Hind margin of the scutellum opaque, covered with tomen- 



tum 19 



Hind margin of the scutellum polished black and destitute of 

 tomentum except in the middle conurus 0. S, 



17. Hind margin of the scutellum polished black and destitute 



of tomentum except in the middle ; front destitute of to- 

 mentum INTERRUPTUS n . Sp . 



Hind margin of the scutellum opaque and clothed with to- 

 mentum, front sparse whitish tomentose mixtus n. sp. 



18. Styliform portion of the third antennal joint as long as the 



thickened basal part; tibiae yellow; length of body 8 to 9 



mm marcidus n . sp. 



Styliform portion only two-thirds as long as the thickened 

 basal part; tibiae black; length of body 3 to 6 mm. (male) 

 pavidus Coq. 



19. Pile of front white, or yellowish white 20 



Pile of front black, hind femora with bristles but no hairs 



below CERvrNus Lw, 



20. Hind femora with several hairs besides the usual bristles 



below, hypopygium of the male only one-half longer than 



the last abdominal segment sojjamosus n. sp. 



Hind femora with a few bristles but no long hairs below, 

 hypop3 r gium of the male unusually large, over one-half as 

 long as the abdomen abnormis n. sp, 



21. Wings, except the subcostal cell, wholly hyaline 12 



Wings with the costal cell, bases of first and second basal 



cells, and of the anal and axillary cells, brownish ; femora 

 reddish brown fumidus n. sp. 



22. Crossbands of black tomentum of abdomen of female very 



distinct and at least six times as broad as those of white 



tomentum mus 0. S. 



Crossbands indistinct and scarcely any wider than those of 

 white tomentum hirsutus Coq. 



Aphoebantus varius n. sp. — Female. Head black, front gray 

 pollinose, sparse short white pilose, yellowish tomentose, that on 

 the sides below white; face gray pollinose, white tomentose and 

 sparse short white pilose. Antennae black, third joint over twice as 

 long as the first two united, the styliform portion slightly over one- 

 half as long as the thickened basal part. Proboscis not projecting 

 beyond the oral margin. Occiput white tomentose, that on the 

 upper part yellowish. Thorax black, yellowish tomentose, that on 

 the sides and anterior end white; short sparse white pilose, the 

 bristles also white ; pleura dense white pilose and tomentose. Scu- 

 tellum black, rounded behind, yellowish tomentose, a spot of white 

 tomentum each side near the base; the usual bristles white. Abdo- 



