166' D. W. COQUILLETT. 



and one of deep, reddish-brown tomentum on bases of the fifth and sixth seg- 

 ments, last segment silvery-white tonientnm in the male, deep reddish-brown 

 tomentose in the female ; pile of sides of first, second and fourth segments white, 

 of the others black, on first four segments abundant, on the remaining segments 

 sparse ; venter white tomentose, a black tomentose crossband on base of each 

 segment except the first and second, and sometimes of the third. Legs whitish 

 tomentose, front tibite destitute of bristles, claws of front tarsi minute- Wings 

 hyaline, costal cell yellowish; antecostal cell wholly black tomentose, no epau- 

 lette of silvery tomentum at base of wings in either sex. Length 7 mm. 



California ! Six specimens. 



7. Aiitlirax altoriiata Say (Syn. A. stenozona Loew !, A. scrobicnlata 

 Loew!, A. albipectus Macq. !, A. connexa Macq. !, A. conmnguinea Macq.) — Differs 

 from consfissor as follows : Tomentum of last three abdominal segments yellow- 

 ish-white, instead of deep reddish-brown ; pile of sides of last segment white, of 

 hind angle of second segment usually black ; last segment in male never wholly 

 silvery-white tomentose ; pile of pleura sometimes very dark and mixed with 

 .several black ones; front tibiie sometimes provided with bristles, claws of front 

 tarsi small ; antecostal cell sometimes largely yellowish tomentose. Length 

 11-14 mm. 



New York!, Maryland!, Florida!, Montana!, Nel)raska!, Illinois. 

 Fourteen specimens. 



Var. liypomelas Macq. (Anthrax hypomelas'Miicq.)— Differs from the typical 

 alteniafu in that the pile on sides of fourth abdominal segment is wholly black, 

 instead of largely whitish ; pile of breast, cosse and venter, and tomentum of 

 legs largely black. Length 14 mm. 



Canada !, Pennsylvania, Wis. A single specimen (Provanclier). 



Yar. lateralis Say (Anthrax JateraJis Say; syn. A. Bnstardi Macq.; A. gra- 

 cilis Macq. !) — Has the pile and tomentum of thorax and abdomen golden-yellow 

 where it is whitish or pale yellowish in the typical altcrnatn. Length 8-12 mm. 



New Jersey !, Florida !, Canada !, Colorado, Washington Territory ! 

 Six specimens. 



Var. periiiiele Wied. (Anthrax perimele Wiedemann, Aus. Zwei. Ins. I, 583) 

 — Has the tomentose crossbands on third and fifth abdominal segments yellowish, 

 those on the other segments white, while in the typical alternata all of these 

 crossbands are yellowish, or else all of them are white. Length 10 mm. 



California!, Brazil (Wied.). Six specimens in May. They agree 

 throughout with AViedemann's description of perimele above quoted. 



Var. I'lilvipes n. var. — Differs from the typical alternata in having the legs 

 reddish-yellow instead of black, and the front tibiae, are destitute of bristles. 

 Length 10 mm. 



Arizona! A single specimen (Keen). 



8. Antlirax iiiercedis n. sp.— Front reddish, above black, brown and 

 white tomentose and reddish or black pilose ; face reddish, much produced below, 

 yellowish-white tomentose; proboscis not projecting beyond epistoma; antennae 



