146 



MELANDER AND BRUES. 



[VOL. 1. 



5. Face rather narrow ; front green . . . melanocerus Loew 

 Face broad ; front violet ..... renidescens sp. nov. 



6. Femora of hind legs of male ciliated, not blackened ... 7 



aplieles sp. nov. 

 8 



platyprosopus Loew 



setosus Loew 



incisuralis Loew 



Male hind femora not ciliated, black at tip 



7. Front coxae with black pubescence 

 Front coxae with white pubescence 



8. Bristles of hind tibiae long 

 Bristles of hind tibiae normal 



56. praeustus, etc. 



Dolichopus amphericus, sp. nov. 



Light green ; antennae yellow, except third joint and tip of second ; fore 

 tarsi ornamented ; femora yellow ; postocular cilia pale below ; tegular cilia 

 black, hind tibiae not black at tip. 



Male. Length 6.5-7 mm., of wing 5.5-6 mm. Light coppery green 

 with much white dust. Proboscis piceous, palpi testaceous. Face of 

 medium width, about four times as long as broad, thickly covered with 

 brilliant yellow dust. Front shining green. Antennae rather elongate ; 

 first joint yellow, with many short black hairs above ; second joint yellow 

 at base, becoming black at apex ; third joint black, sericeous, obtusely 



FIG. 22. a, D. amphericns, male wing; 6, D. color adensis, male wing; 

 c, D. aniphericus, lamella ; d, D . amphericus, male fore tarsus. 



pointed at apex. Arista less than twice as long as antenna, very distinctly 

 pubescent. Postocular cilia black above and light yellow on lower three- 

 fourths. Thorax light green, coppery on the disc ; slightly opaque by the 

 presence of light yellow dust. Dorsally there is a deep coppery longitudinal 

 stripe. Abdomen shining green, white dusted. The white dust is so thick 

 as to obscure the ground color on the lower part of the sides. Incisures 

 coppery. Hypopygium black, shining, except at base, where it is white 

 dusted. Near the base bearing a large patch of black hair. Internal 

 appendages ferruginous ; lamellae very pale yellow, with a wide, sharp bor- 

 der of black at apex, where they are bristly and deeply toothed. Outer 

 tooth bearing at its tip a strong, curved bristle. Pleurae greenish-black, 



