278 BULLETIN 116, UNITED STATES NATIONAL MUSEUM. 



more slender. Mddle and hind tarsi infuscated from the tip of the 

 first joint. Calypters and halteres yellow, the former with black 

 cilia. 



Wings (fig. 203) grayish; costa scarcely enlarged at tip of first 

 vein, still rather thick from this point to its tip; second and third 

 veins running rather close together and both bent backward at their 

 tips, third widely separated from fourth; last section of fourth vein 

 a little bent just beyond its basal third; hind margin of wing scarcely 

 indented at tip of fifth vein; anal angle rather prominent. 



Female. — Face wide, grayish white; coxae, femora, and general 

 color as in the male; fore tarsi plain, about one and a fourth times 

 as long as their tibiae, first joint about as long as the three following 

 joints taken together, fourth and fifth joints of nearly equal length; 

 wing about as in the male, except that the second vein is straight 

 and the third vein is nearly so. 



Redescribed from 5 males and 3 females from Louisiana; 1 pair 

 from Opelousas, Louisiana, 1897 (Pilate); and 1 male taken by C. T. 

 Greene at Falls Church, Virginia, June 22. 



Type ZocrtZiiy.— District of Columbia. Melander and Brues report 

 it from Illinois and Louisiana. 



No. 204. DOLICHOPUS SPHAERISTES Bnies. 



Dolichopus sphaeristes Brues, Ent. News, vol. 12, 1901, p. 44. 



The following is a copy of the original description. 



Bright green; antennae, except part of third joint, yellow; femora yellow; cilia ol in- 

 ferior orbit pale; tegular cilia black; fourth longitudinal vein not broken; hind tibiae 

 and tarsi at base yellow; fourth and fifth joints of male fore tarsi enlarged, black, the 

 fifth bilobed and with a large snow-white empodium. 



Male. — Length 6 mm., of wing 5 mm.; bright coppery green, moderately shining. 

 Face rather narrow, ochreous, much lighter on the lower fourth. Palpi light yellow. 

 Antennae yellow except a black spot at insertion of the arista and the infuscation of 

 the tip of third joint. Third joint short, oval, obtusely rounded at tip. Arista black, 

 about one and one half times the length of the antennae, distinctly pubescent. Ver- 

 tex shining green. Postocular cilia, except three upper ones pale yellow. Thorax 

 slightly yellowish pollinose in front. Pleurae darker and white pollinose. Coxae 

 pale yellow except a black stain on middle pair externally. Anterior ones bare ex- 

 cept for a row of black hair along the apical external edge. Middle ones sparsely 

 black-hairy anteriorly. Abdomen green at base and coppery posteriorly, last segment 

 and hypopygium black. Internal appendages of hypopygium ferruginous. Lamellae 

 gradually narrowed toward the base and obliquely arcuate at apex; white, narrowly 

 and sharply bordered with black on the apical half; strongly bristly at the apical angle, 

 elsewhere almost devoid of bristles; with a region of black punctures near anterior 

 angle. Legs yellow except last two joints of anterior tarsi, which are black; and four 

 posterior tarsi, which are gradually infuscated beyond tip of first joint. Last two joints 

 of anterior tarsi (fig. 204) much enlarged and fringed with black hair on anterior edge. 

 The fifth slightly bilobed at apex, part of the joint forming a sort of appendage. Em- 

 podium ^'ery large, snow-white, almost as large as the fifth joint. Posterior tibiae 

 greatly thickened, especially near base, as stout as the femora. Each tibia has an 

 elongate bare space on inner side of basal half. Wings hyaline, rather narrow at base. 



