32 S. W. WILLISTON, M. D. 



as the first two together. Dorsum of thorax nearly bare, with very short black 

 pile. Pleurae wholly bare, shining ; the coxae lightly pollinose. Abdomen with 

 very short black pile, the bristly hairs on the side of second segment not abun- 

 dant ; first two segments black, with a bluish reflection : the large part of the 

 third and the remainder of the abdomen red, except on the sides the black extends 

 on the fourth, sometimes narrowly on the fifth. Legs black, with black pile; the 

 hind femora for the whole length, except the upper side, red ; on the inner side 

 of the front tibiae and all the tarsi with golden pubescence. Wings brownish, 

 hyaline toward the base. 



One male and two females, Mt. Hood, Oregon (H. K. Morrison). 



61. liaphria pubescens n. sp. 



'J, 9- — Black, shining; legs, except the tarsi, red. Length 10-13 mm. 

 Face and front clad with black pile and hair, except a tuft of silver pile on each 

 side of the face above the mystax. In the male the beard wholly white, in the 

 females wholly or chiefly black. Dorsum of thorax and abdomen shining, faintly 

 bluish black, clothed with golden pubescence, very noticeable when seen from in 

 front. Pleurae bare, shining black; the coxae whitish pollinose. Front and mid- 

 dle coxae, and under sides of the femora with white pile; femora and tibiae 

 wholly red, bristles black; tarsi black with golden pubescence on the the under 

 side. "Wings tinged with brown, less so toward the base. 



Eight males and five females, Washington Territory and Mt. Hood, 

 Oregon, (H. K. Morrison). 



L.AMPRIA. 



62. liampria felis Osten Saeken, West. Dipt. 286. 



A single female from Washington Territory agrees perfectly with 

 Osten Sacken's description ; it lacks the tubercles of Lampria^ but has 

 the setae of the hind femora very distinct. 



6.3. liampria bicolor Wiedemann, Auss. Zwei. Ins. i, 522, 40 (Laphria). 



? Laphria saniosa Say, J. Acad, vi, 158; Compl. Wr. ii, 355. 



Laphria megacera Macquart, Hist. Nat. Dipt, i, 284; IS (type compared by 

 Osten Saeken). 



Laphria antaea Walker, List, etc., ii, 379 and vii, 527. 

 I have three specimens from Connecticut in which the first segment of 

 the abdomen above is black ; the dorsum of the thorax has fine golden 

 pubescence, — they are evidently saniosa Say. Another specimen ( 9 ) 

 from Pennsylvania has the abdomen red from the very base, and the 

 thorax without the golden pubescence. It may be a distinct species ; if so 

 it must be the true bicolor of Wiedemann, as he certainly would have 

 noticed the black on the abdomen had it existed. 



64. Lampria rubriventris Macquart, Hist. Nat. Dipt. 1, 284, 19 {Laphria). 



Four specimens from Greorgia show a considerable variation in the 



abdomen. In one ( S ) it is wholly red above, except the base; in the 



females it is chiefly black, with the red on the sides near the front, not 



