ALDRICH: DOLICHOPUS AND H VGROCELEUTHUS. 13 



Dolichopus longipennis Ijoew. 



Numerous specimens: Kansas, Tenn., Ohio, Pa., N. C, Fla., Ga., 

 N. J. These localities range a little farther south than those given 

 for ciipriiiiis. The width of the wing seems a little variable. 



Dolichopus hastatus Lucw. 



A single female, Mt. Hood (U. K.). The coloring of the middle 

 tibiae and tarsi is distinctive. The species was described from Sitka. 



Dolichopus plumipes Scopoli. 



Eleven specimens, Brookings, S. D. ; one male, Manitou Park, 

 Colorado, July (Snow). 



Dolichopus flagellitenens Wlicdi r. 



Psyche, May, 1890, p. 339. 



Nine males and three females, Brookings, S. I)., June [6. The 

 female has the hind tibiae scarcely a third black, last three joints of 

 fore tarsi black, and lacks the sexual marks which distinguish the 

 male. A single female from North Park, Col. (U. K.), is not dis- 

 tinguishable from this species. 



Dolichopus vigilaiis, n. sp 



Shining blue-green, antennae red, cilia of inferior orbit pale, of 

 tegulae black, hind tibiae black at tip. 



Male. Face yellow, front dark bluish green; antennae red, the api- 

 cal half of third joint blackish. Thorax and abdomen shining bluish 

 green, dusted with white along the sides; hypopygium rather small, 

 the lamellae of the usual size, whitish, rounded, with the usual jagged 

 black border and bristles. Fore coxae yellow, with rather numerous 

 small black hairs on the front side, beginning at the base; middle and 

 hind coxae blackish, the latter more yellowish toward the tip. Hind 

 femora with small yellow cilia below, near the tip only. Middle 

 tibiae with a few long, divergent bristles; hind tibiae a little enlarged 

 with a glabrous stripe the whole length of the inner side and another 

 behind, and tipped with black. Fore tarsi one and one-half times as 

 long as the tibia, the first two joints slender, stalk-like, yellow; third 

 joint slender, short, black at tip; fourth joint black, still shorter, com- 

 pressed, with black hairs above; fifth joint longer than the fourth and 

 wider, black, with black fringe above. The upper apical angle is 

 acute, and the apical margins recede in a straight line to the claws. 

 The empodium is modified into a snow-white little plume, fitting close 

 to the fifth joint, and making it appear white at tip. A rather high 

 power may be necessary to show the true condition. 



