330 A. L. MELANDER. 



ments with black hairs, remainder of tergum nude (the venter is eaten off by 

 parasites) ; hypopygium small, not constricted at base, black, from the under side 

 projects a small curved process, upper valves short-hairy. Legs piceous, with 

 l)Iack hairs, especially on front side of the coxfe, and upper and under sides of 

 the front and middle femora and tibiae ; hind legs gradually thickened, hind tar- 

 sal joints swollen, remainder of legs slender, simple. Halteres piceous. Wings 

 cinereous-hyaline, stigma faintly fuscous, veins dark brown. 



One male ; California (Baron). 



Empiinorpha coiuautis Coquillett. 

 Proc. Nat. Mus., 1895, p. 396. 



Head black, gray poUinose; pile of face mixed with black and white; eyes 

 narrowly separated, the space between them being narrower than the width of 

 the lowest ocellus, the upper facets being noticeably larger than the lower ones ; 

 antenuiB black, the second joint reddish, slightly over one-third as long as the 

 first; third joint subequal to the first, twice as long as broad; style slender, 

 as long as the third joint ; proboscis two and one-half times as long as the height 

 of the head, projecting obliquely downward ; palpi slender, curving upward, 

 yellowish, the base brown, the pile black and white. Thorax black, shining, 

 three vittse and tihe broad lateral margins opaque gray pollinose; pile of thorax 

 very abundant whitish, two longitudinal stripes of largely black pile on the dor- 

 sum; pleura black, thickly whitish pilose, destitute of stout bristles. Abdomen 

 shining black, depressed, twice as long as wide ; its pile very abundant, on the 

 first two segments and the sides of the others largely whitish, on dorsum of the 

 remaining segments mostly black; legs rather robust, reddish yellow; coxse, 

 under side of each femur, apex of each tibia and of each tarsal joint blackish ; 

 legs simple, the pile abundant. Halteres black. Wings hyaline, grayish towards 

 the apex; veins, stigma and a spot above furcation of second and third veins 

 dark brown. The female is the same as the above, except that the first abdomi- 

 nal segment and the bases of the next two are opaque gray pollinose. 11 mm. 



Northern California (C. Fuchs). 



PACHYMERIA Macquart. 

 Sparsely hairy species of stout aspect and gray-black color, very 

 much resembling Empis. This genus grades into Empis and Rham- 

 phomyla, but differs in that both sexes are dichoptic, that all the 

 femora are about equal in length, and that the hind femora are 

 strongly thickened. 



Abdomen black, with white pollinose spots towards the apex- • .piidica Loew. 

 Abdomen unicolorous black brevis Loew. 



Pachyineria piidica Loew. 

 Cent, i, 35. 



Head dark cinereous. Antennse black, first two joints cinerasceut, sometimes 

 partly fuscous. Proboscis very long. Thorax 4-vittate with fuscous, with short 

 and sparse black hairs. Abdomen short, broad, black, shining, suhglabrous, with 

 fine pale hairs, longer at the base and at the basal part of the lateral margins; 



