252 BULLETIN 116, UNITED STATES NATIONAL MUSEUM. ' 



Redescribed from 7 males. J. M. Aldrich has specimens from 

 Clementon, New Jersey, taken May 30 (Johnson); Woods Hole, Mas- 

 sachusetts (IToiigh); and from Lafayette, Indiana, taken May 25. 

 [ had specimens taken at Great Falls, Virginia, May 9-June 28. 

 W. T. Davis took it at Wyandarch, Long Island, New York, May 25. 



Type locality. — Washington, District of Columbia. Melander and 

 Brues report it from Massachusetts; Johnson from Clementon, New 

 Jersey, May 30, and Riverton, New Jersey, May 30. 



This differs from eudactylus in not having cilia on the hind femora, 

 and it has the last three joints of fore tarsi equal, while eudactylus has 

 the filth distinctly the shortest: the hind margin of the wing in tonsus 

 is also more sinuous. 



No. 185. DOLICHOPUS EUDACTYLUS Loew. 



Dolichopus eudactylus Loew, Neue Beitr., vol 8, 1861, p. 16; Mon. N. Amer. 

 Dipt., pt. 2, 1864, p. 46. — Aldrich, Kansas Univ. Quart., vol. 2, 1893, p. 11, 

 pi. 1, fig. 2 (the figure is incorrect). — ^Johnson, Insects of New Jersey, 1909, 

 p. 757. 



Male. — Length 6-7 mm.; of wing 6-6.5 mm. Face rather narrow, 

 ocher yellow or golden yellow, more whitish below. Front shming 

 green, all the lower part covered with coarse yellowish brown pollen 

 which is ojily visible in certain lights. Antennae wholly black; the 

 first joint sometimes appears yellowish because of the pollen on 

 under side; third joint about as long as wide, pointed at tip. Lateral 

 and mferior orbital cilia yellowish, about six of the upper cilia black. 



Thorax shinmg green; dorsum dulled a little with white pollen 

 on the anterior portion; usually there is a coppery spot on each side; 

 pleurae dulled with white pollen. Abdomen green, usually with 

 coppery reflections; the white pollen on its sides abmidant and 

 extendhig upon the dorsum. Hypopygium black; its lamellae (fig. 

 185) large, somewhat elliptical, but narrowijig in the stem, whitish 

 with wide black border on apical margin, which is jagged and bristly 

 on its lower portion; above this they are frmged with yellowish hairs, 

 except at base, where the hairs are black; they are nearly twice as 

 long as wide. 



Fore coxae yellow, anterior surface covered with little black hairs. 

 Middle and hind coxae black with yellow tips; femora and tibiae 

 yellow. Middle and hind femora each with one preapical bristle; 

 lower inner edge of hind femora ciliated from the middle nearly to 

 the tip with yellow hairs, which are nearly as long as the width of 

 the femora. Middle tibiae with three bristles below, one pair near 

 apical third and one bristle near basal third. Posterior tibiae 

 scarcely thickened. Fore tarsi (fig. 185a) nearly one and two-thirds 

 imes as long as their tibiae; first three joints slender, yellow; sec- 

 ond joint from two-thirds to three-fourths as long as first; third 

 and fourth of nearly equal length, each more than three-fourths as 



