DESCRIPTION OP THE SPECIES. 65 



inferior orbit whitish. ; cilia of the tegulse- black; feet yellow; tarsi of 

 the plain; fourth longitudinal vein not broken. Long. corp. 0.25 

 0.26. Long. al. 0.250.26. 

 SYN. Dolichopus scapularis LOEW, Neue Beitr. VIII, 22, 22. 



Bright-green or bluish-green, the abdomen more golden-green, 

 especially towards its tip, sometimes rather coppery. Face whitish, 

 in the J* generally somewhat yellowish upon the upper half. 

 Front shining, generally bluish-green, seldom green or blue. 

 Antennae yellowish-red ; third joint short-ovate ; generally slightly 

 infuscated at the tip ; arista distinctly pubescent. Cilia of the 

 inferior orbit yellowish-white. Humeral callosity yellowish. The 

 callosity between the root of the wing and the scutellum and 

 generally also the margin of the latter are of the same color. 

 Coxae and feet pale yellowish ; the front side of the fore coxae is 

 beset with delicate whitish hairs ; there are some short minute 

 black hairs on their inner side only, which however are not always 

 easily discernible in the g . Middle coxae upon their outside with 

 an elongated blackish spot. Hind femora with a bristle before 

 the tip. The two last joints of the fore tarsi of the ? are black- 

 ish-brown, still the brown color often begins already before the tip 

 of the third joint and the tips of the first and second joints are 

 also often somewhat infuscated ; in pale-colored specimens the 

 coloring of the middle and hind tarsi is the same, whilst in darker 

 ones the distinct brown color begins already in the middle of the 

 first joint. Cilia of the tegnlae black. "Wings grayish, towards 

 the fore margin somewhat yellowish-brown ; fourth longitudinal 

 vein not broken, still the inferior angle of the flexure is some- 

 times not rounded. 



Male. Lamellae of the hypopygium of moderate size, rather 

 rounded, on the upper and apical margin with a rather broad black 

 border, on the latter, jagged and fringed with black bristles. Hind 

 femora upon the second half of their under side ciliated with 

 moderately long yellowish hairs. Hind tibiae of the usual thick- 

 ness, upon the hind side with a glabrous stripe, which reaches 

 nearly to their middle. Fore tarsi somewhat over once and a quarter 

 the length of the tibiae, their joints decreasing in length, the last 

 one somewhat more pale at the tip. Costa near the tip of the 

 first longitudinal vein with a very slight swelling. 



Hob. Middle States ; District Columbia (in June ; Osten- 

 Sacken); Illinois. 

 5 



