ADAMS: DIPTERA AFRICANA. "201 



Limosina venalicia. 



Borhorus venalicius 0. S., Cat. N. Am. Diptera, 263. 



One soiled specimen, which I believe belongs here. The 

 markings of the head and the mesonotum are obliterated, and 

 on this account its identity is uncertain. The general color, the 

 markings on the legs, and the wings, are comparable very well 

 to the description of Osten Sacken's species, and its identity is 

 very probable. 



MUSCID^. 

 Paracompsomyia. 



(Hough, Proc. Acad. Nat. Sci. Phil., 1898, p. 184.) 



The males in this genus have an area of enlarged facets, eyes 

 subcontiguous. The costa is black only ixinigrvpennis , the type 

 of the genus. In the remaining species, described herein, the 

 base of the wing only is black. 



Paracompsomyia nigripennis Hough, 1. c, p. 184. 



In the collection before me are four specimens agreeing in all 

 particulars with Hough's description. The male, of which 

 Hough had no representative, is a fraction smaller than the fe- 

 male ; the large faceted area is sharply marked off, occupying 

 the upper two-thirds of the eye, and is ferruginous in color ; 

 the remainder of the eye is dark brown. 



January. 



Paracompsomyia houghi, n. sp. 



Male and female: Smaller than nigripe7inis, 8 to 10 mm., 

 wing, 7.6 mm. Largely metallic green, with bluish and violet 

 reflections on thorax and base of abdomen. Head black, sub- 

 shining below lower angle of eye, grayish pollinose except on 

 frontal vitta and upper part of front, and white pilose. Area 

 of large facets not sharply marked off. Antenna and legs 

 black, latter sometimes brownish in the female. Wings hya- 

 line, base, as far as tip of small basal cells, blackened. Thorax 

 with a sheen of white dust, most prominent in front of the 

 suture, pile black. On front part of thorax are two opaque, 

 black, angular lines, meeting centrally on anterior margin, so 

 as to form a A-shaped figure ; just in front of the suture each 

 turns outward, broadens, and becomes club-shaped. The space 

 between these lines shows, in certain lights, metallic green. 



