AMERICAN DIPTERA. 31 



58. Liapliria franciscana Big. Ann. Soc: Ent. Fr. 1878. 225. 



% 9. — Deep black, sliiiiing ; faee with black bristly liairs and yellowish white 

 or wliite pile ; dorsum of thorax pubescent, blue; in the male with short light yel- 

 low, in tlie female wholly black, pile. Length 12-13 mm. 



%. — Bristly hairs on the face black, in the middle of which there is some long 

 liglit colored pile, and on the sides above concealed beneath more appressed yel- 

 lowish white or white pile; in the middle above, bare; front poUinose. The 

 tuft of hairs below the base of the antennae and on the first two joints black. 

 Third joint of antennae not much longer than the first two together. Front with 

 black hair, and black bristles on the ocellar tubercle ; occipito-orbital hair black ; 

 pile of beard soft, white. Dorsum of thorax of a distinct opalescent bluish color, 

 the short, not abundant pile, light yellow, on the posterior part longer, black, the 

 bristles also black; a spot lightly pollinose on the inner margins of the humeri. 

 Pleurae black, lightly whitish pollinose ; the ante-halteres bristles black. Abdo- 

 men deep shining bluish black, with very short black pile; on the sides of the 

 segments, in front and behind, longer, light yellow, but still not conspicuous; the 

 bristles and hairs on the sides of second segment black, the hair sometimes 

 whitish. Legs deep black ; front and middle coxae, and the underside of the four 

 front femora near the base, with longer whitish pile; on the four front tibiae with 

 shorter, light yellow pile. Wings hyaline at the base, tinged with blackish beyond. 



9 . — The pile among the bristles on the facial gibbosity is wholly black, as is 

 also that on the dorsum of the thorax ; the posterior angles of the third, fourth 

 and fifth abdominal segments have but little whitish pile; otherwise as in male. 



Three males and one female from Washington Territory' (H. K. Mor- 

 rison), and two females from N. California (0. T. Baron). 



59. liaphria canis n. sp. 



% 9 • — Deep shining l)lack ; face with black bristly hairs and white pile ; dorsum 

 of thorax in both sexes with very short, sparse whitish pile, and in the male with 

 longer, more sparse black pile, also. Length 10-11 mm. 



Is closely allied to the preceding; the white pile on the facial gibbosity 

 is less in the male in quantity, and the dorsum of the thorax lacks the 

 characteristic yellow pile of the male, and the black pile in the female. 

 In both sexes the dorsum is clothed with very short white pile or, more 

 properly, pubescence, a little longer and more erect in the male ; in the 

 latter also there is moderately long, sparse, black pile, wanting in the 

 female. In the male the dorsum of the thorax is bluish opalescent, 

 but in the female the blue is scarcely apparent. The pile of the 

 abdomen is longer, and on the sides near the base thicker and white. 

 On the tibiae also the white pile is longer and more conspicuous. 



Two specimens, Conn., June 25. 



ao. Liaphria Xanthippe n. sp. 



■J, 9-— B':^''k»sliii>'"gi black pilose; third segment in part, remainder of the ab- 

 domen, and under sides of hind femora red. Length 12-15 mm. 



Face black, in large part shining, on the sides near the eyes narrowly white 

 pollinose with a little silvery pile near the mystax below, elsewhere the pile and 

 bristles are wholly black. Third joint of antennae rather more than twice as long 



