July iSqo.] 



PSrCHE. 



373 



inflated ; colors similar but the trans- 

 versal yellow bands larger and on the 

 3d and 4th segments extended into a 

 median dorsal line ; last segment short, 

 black, shining, with a flat basal impres- 

 sion ; appendages as long as the seg- 

 ment, converging, cylindrical, rounded 

 on tip, black, hairy; part between them 

 large, black rounded. Vulvar lamina 

 large, broad, a little shorter than the 

 segment, split to the basal third, point- 

 ed, tapering gradually to the tip, yel- 

 low ; cavity bordered by it black, with 

 an elevated ridge, pointed in middle. 



Length 

 Abdomen 

 Ala sup. 

 Ala inf. 

 Pterostigma 

 Femur post. 

 Appendages 



Male Female 



Exp. ala 

 Lat. cap. 

 Breadth ant. 

 " post. 



47 

 6 

 6 

 7 



48 



Habitat: Center, N. Y., Mr. J. A. 

 Lintner, no. 2839, ^7 May. ^$ ; 2840, 

 21 May, 49- Two females (^L. vac- 

 ua Hagen, no descr.) from Saskatche- 

 wan, Lake Winnipeg, collected in i860 

 by Robert Kennicott. The position of 

 this rather eccentric, small species is 

 near C. ulheri^ but it is separated from 

 that species by unusual characters. 

 The anal angles of the hind wings of the 

 male are nearly rounded ; all triangles 

 are without transversal veins ; only one 

 series of discoidal cells, and a very plain 

 venation. It is very interesting that this 

 apparently arctic species is found in east- 

 ern New York. 



DESCRIPTIONS OF SOME NEW NORTH AMERICAN 

 DOLICHOPODIDAE. 



DY WILLIAM M. WHEELER, MILWAUKKE, WIS. 

 ( Concluded from p. 362.') 



Peloropeodes, n. gen. 



$ . Small dull metallic green species. Palpi 

 prominent, though not enlarged. Antennae 

 as long as the head and thorax; first joint 

 stout, subcylindrical, glabrous on its upper 

 surface, with a few hairs on its under side; 

 second joint short, rounded, subcaljculate ; 

 third joint pubescent, very long, tapering 

 from a broad rounded base to a blunt point, 

 on which is inserted the thick, flexible arista. 

 Face rather broad for a male, front ample. 

 Thoracic dorsum moderately arched, beset 



with the usual stout setae; scutellum broad, 

 short, smooth, with four setae. Abdomen 

 with six segments, short, stout at the base 

 but tapering very rapidly to the apex, where 

 is attached the sessile and greatly enlarged 

 hypopygium, consisting of a scuttle shaped 

 box, two thirds the size of the abdomen, 

 from the ventrad directed opening of which 

 protude several hook-shaped chitinous ap- 

 pendages. Legs rather stout, hairy; tibiae 

 equalling the femora in length; spurs of the 

 fore tibiae short, those of the posterior pairs 



