THE DIPTEROUS GENUS DOLICHOPUS IN NORTH AMERICA. 145 



tursi a little longer than their tibiae, black from the tip of the first 

 joint, which is without a bristle on its upper surface. Hind tarsi 

 wholly black. Calypters and halteres yellow, the former with 

 black cilia with which are mixed several pale hau's. 



Wings grayish, tinged a little with yellowish in front of third vein; 

 costa not enlarged at tip of first vein; last section of fourth v^ein 

 only a little bent beyond basal third; third and fourth veins a little 

 convergent; hind margin of wing a little indented at tip of fifth vein, 

 rather evenly rounded, the anal angle not being very prominent. 



Described from two males. One was taken by C. W. Johnson 

 at Machias, Maine, July 21; the other was taken by L. M. Turner 

 at Ungava Bay, Labrador, July 22, and is in the United States 

 National Museum. 



Type.— Male, Cat. No. 23025, U.S.N.M., from Labrador. 



The hypopygium is remarkably short but as thick as usual; it is 

 formed about as it is in ramifer and cuniculus; ramifer differs from 

 both of the other species in having a stump of a vein at the bend 

 in last section of fourth vein. It differs from cuniculus in having, 

 the first antennal joint yellow below, and the third and fourth veins 

 convergent beyond the bend in fourth; in cunicuhis the antennae 

 are wholly black, with the thu-d joint smaller, and the thud and 

 fourth veins are nearly parallel beyond the bend in fourth. 



No. 98. DOLICHOPUS CUNICULUS, new species. 



Male. — Length 3.5 mm.; of wing the same. Face wide, silvery 

 white. Front dark shining green with the white pollen of the face 

 extending narrowly ^long the orbits. Antennae (fig. 986) black 

 with the lower apical corner of the fu-st joint a little yellowish; third 

 joint a little longer than wide, rounded at tip. Lower orbital cilia 

 white. 



Thorax green; dorsum with a median bronze vitta, on each side of 

 which there is a shining green line, lateral portions of the dorsum 

 with bronze reflections; pleurae dulled with a little white pollen. 

 Abdomen green; the white pollen on its sides abundant and reaching 

 upon the dorsum. Hypopygium (fig. 98) short and rather slender, 

 reaching forward to about the middle of the fourth abdominal seg- 

 ment; its lamellae very small, somewhat triangular, yellowish, the 

 apical margin scarcely darker and not jagged, lamellae fringed with 

 deUcate whitish hairs. 



Fore coxae yeUow with a blackish spot at base on outer surface, 

 anterior surface covered with silvery pollen and little black hairs. 

 Middle and hind coxae black with yellow tips. Femora and tibiae 

 yellow. Middle and hind femora each with one preapical bristle, the 

 latter without ciHa below. Posterior tibiae scarcely stouter than the 



