NORTH AMKRICAN DIPTERA. 175 



32. Aiitlirax cantor n. sp. — Wliolly black. Front yellowish-white to- 

 nientosc and black ])il()se; face slightly produced below, black and yellowish 

 tomentose ; proboscis not projecting beyond epistonia : first two joints of an- 

 tenuiB of nearly an equal length, the third joint subglobular at its base, the 

 styliform portion slender and about as long as rest of antcuiife; occiput white 

 tomentose. Thorax yellowish and white tomentose, sides and front end yellowi.sh 

 pilose, pile and bristles of the hind part black ; pleura white pilose, that on lower 

 part and on the coxse largely black ; scutellum yellowish tomentose, that at base 

 largely white, pile and bristles black. Abdomen white tomento.se, more yellow- 

 ish on apex of each segment, that on apex of fourth .segment broadly black, on 

 apices of second and third segments mixed with black; sides of first two seg- 

 ments quite densely white pilose, sides of other segments and dorsum of ab- 

 domen very sparsely black pilose ; venter brownish tomentose. Legs mixed 

 yellowish and white tomentose, front tibiae destitute of bristles, claws of front 

 tarsi well developed. Wings hyaline at the apex, the base blackish-brown, the 

 outline of this color extending from near apex of first vein trausvei-sely to second 

 vein, then basally a short distance, then curving outward over third vein, then 

 basally to fourth vein a little beyond small crossvein ; then curving basally 

 through discal cell opposite small crossvein and through base of third po-sterior 

 cell, then basally to extreme base of this cell, then nearly straight to hind margin 

 near apex of axillary cell; middle of anal and base of axillary cells largely sub- 

 hyaline ; a brown cloud on veins at bases of second submarginal and second 

 posterior cell, that on the former sometimes united with the brown in marginal 

 cell, crossing the first submarginal cell. Length 5-7 mm. 



California ! Three specimens in September and October. 



33. Anthrax e<lititia Say (Syu. 1 A. cUagonalis Loew !, f A. vestita Walk. !). 

 — Front black, reddish below, golden-yellow tomentose and black pilose; face 

 reddish, very much produced below, golden-yellow tomentose; proboscis projects 

 one-third its length or less beyond the epistoma ; first joint of antennae, and 

 sometimes the second, reddish; third joint black, elongate-conical at its base; 

 occiput yellowish or white tomentose. Thorax black, yellowish tomentose, the 

 sides and front end yellowish pilose, that above root of each wing sometimes 

 white, the usual bristles yellowish ; pleura yellowish pilose, that below root of 

 wing sometimes white; scutellum black, tomentum and bristles yellowish. 

 Abdomen black, the apex sometimes reddish, wholly yellowish tomentose .and 

 pilose, rarely with a few black pile posteriorly ; venter black, sometimes largely 

 reddish, yellowish tomentose. Legs reddish, yellowish tomentose, front tibiae 

 provided with bristles; tarsi black towards the apex, claws of front tarsi well 

 developed. Wings hyaline at the apex, the base brownish, the outline of this 

 color extending from near apex of auxiliary vein obliquely to second vein (or 

 transversely to this vein, then basally a short distance) then transversely to 

 discal cell, then basally to first third or fourth of this cell, then curving through 

 ba.ses of third and fourth posterior cells, ending in hind margin at axillary in- 

 cision, or at apex of anal cell ; sometimes the brown color is very pale, even to 

 siibhyaline with brown clouds on veins at bases of first submarginal, first, third 

 and fourth posterior cells; sometimes a brown cloud on veins at bases of second 

 submarginal and second posterior cells. Length 9-12 mm. 



Kansas !, California !, 3Iontana ! Hfty-ninc specimens iu Sept. 



