NORTH AMERICAN DIPTERA. 99 



of front tarsi small, pul villi rather lar};e. Wings wholly blackish browu. Length 

 10 mm. 



Southern California. A single specimen in May. 



Aiitlirax obKCiira n. sp.— Black, the first two antennal joints, face, lower 

 fourth of front, femora, tibisK and base of tarsi, yellow. Pile of front and face 

 black, that of the body light yellow; tonientum of occii)iit white, that on front, 

 face and entire body light yellow. Base of third antennal joint conical, face 

 much produced below, proboscis projecting one-fourth its length beyond the 

 epistoma. Front tibi;e provided with bristles, claws of front tarsi rather large, 

 pulvilli wanting. Wings grayish hyaline at the apex, the base pale brownish, 

 the outline of this color indistinct, the brown color darkest along the veins, 

 reaching those at bases of the second submarginal and second posterior cells; 

 somewhat darker clouds on veins at bases of the first, third and fourth posterior 

 cells. Length 7 mm. 



Southern California. A single specimen in May. 



Anthrax levi^-ula n, sp.— Black. Pile black, that at each hind angle of 

 the thorax and on sides of first two abdominal segments largely white; tonien- 

 tum obscure, brassy yellow or violaceous: bristles of thorax and scutelluni black. 

 Base of tliird antennal joint short-conical, face very slightly retreating below, 

 proboscis not projecting beyond the epistoma. Front tibite destitute of bristles, 

 claws of front tarsi rather large, pulvilli wanting. Wings hyaline at the apex, 

 the base brown, filling basal third of marginal cell, bases of first submarginal, 

 and of first posterior, basal half of discal cell to far beyond the small cross-vein, 

 base of third and nearly the basal half of the fourth posterior cell, also the whole 

 of the anal and axillary cells, but in the axillary cell the brown color is very 

 faint. Length 5-6 mm. 



Southern California. Three specimens irk April and May. 



Anthrax pallidula n. sp. -Black. Pile of head, breast and sides of 

 abdomen, except on the first three segments, black, remaining pile of thorax and 

 abdomen yellowish, bristles of thorax and scutellura also yellowish ; tonientum 

 of head golden-yellow, of thorax, scutellum and abdomen yellowish white. 

 Base of third antennal joint elongate-conical, face very slightly retreating below, 

 proboscis not projecting beyond the epistoma. Front tibiai destitute of bristles, 

 claws of front tarsi minute, pulvilli wanting. Wings hyaline at the apex, the 

 base browu, the outline of this color extending from near apex of auxiliary vein 

 transversely to the second vein, then basal ly a short distance, then transversely 

 to the discal cell at its last fourth, then basally a short distance, then crossing 

 the discal, base of third and basal fourth of posterior cell, beyond wliich the 

 outline is indistinct; apical fourth of an:il and whole of axillary cell hyaline: the 

 brown fills base of discal cell to beyond the small cross-vein. Length 6 mm. 



Southern California. A single specimen in September. 



Anthrax iiehnlosa n. sp.— Black. Pile of head, breast largely, several 

 on each end of thorax and that on sides of abdomen, except on the first two 

 segments black, that on upper part of pleura and sides of first two abdominal 

 segments, except the hind angle of the second, white; that on front end of 



TRANS. AM. ENT. SOC. XXI. MARCH. 1894. 



