Vol. XI] CURRAN— REVISION OF THE PIPIZA GROUP 361 



Ont., June and July (Curran), in collection of the 

 author. 



Type locality, Guelph, Ontario. 



16. Cnemodon longiseta, new species 



Habitat: Ontario! Very similar to C. intermedia but 

 larger, the arista longer, legs less extensively yellow and 

 the hypopygium different. 



Length, 8 to 8.5 mm. Male: Head entirely black pilose except a few golden 

 hairs at vertex and some cinereous pile on extreme lower part of eyes. Third 

 joint of antennae nearly twice as long as wide, bright yellow on basal third 

 below; apex of second joint more or less yellowish or piceous; arista slender, 

 long, its basal quarter yellowish. Thorax slightly shining black with three 

 obscure opaque stripes on anterior half of dorsum, the middle one broadest 

 and more distinct. Pile long, black; on dorsum more or less mixed with golden 

 or reddish pile. Sometimes the pile may appear mostly reddish yellow on 

 the disc. Scutellum black, with stouter black pile and with an apical groove 

 and pre-apical impression. Squamae brown, the edge darker, the fringe of 

 hairs brownish. Abdomen opaque black, the usual areas shining; abdominal 

 pile black with basal portion and margins more or less yellowish or tawny 

 pilose, but not very conspicuously so. Legs black with black pile; tips of 

 femora, basal third of front four and immediate base of hind tibiae, yellow; 

 front four tibiae and first two joints of their tarsi reddish yellow; middle tibiae 

 more produced in front than in C. intermedia. Wings cinereous across the 

 middle, the venation slightly variable. 



Holotype, male, No. 878, Mus. Calif. Acad. Sci., 

 July 11, 1920, H. Curran, collector. Paratype, male, 

 Jordan, Ontario, June 20, 1920 (Curran), in Canadian 

 National Museum. 



Type locality, Jordan, Ontario. 



17. Cnemodon squamulse, new species 



Habitat: Ontario! Very similar to C. longiseta, but 

 the eyes and thorax wholly, and the abdomen largely, 

 whitish pilose; the squamae grayish, thus differing from 

 the other two species of the group. 



Length, 7.5 mm. Male: Face and front black pilose; vertical triangle and 

 posterior orbits whitish pilose, the occipital cilia and a few hairs on the front 

 of the vertical triangle black. Antennae black, third joint below and apex of 

 second reddish yellow: this joint one and one-half times longer than wide, its 

 end obtusely rounded; arista slender, a little longer than third joint of antenna 1 , 

 its basal third luteous. Thorax and scutellum shining, somewhat bronzed 

 black, the former with an obscure opaque median stripe on front half; pile 

 wholly whitish. Squama? grayish, fringed with cinereous pile. Abdomen 

 opaque black, the usual areas shining; pile black, the base, margins and lateral 

 triangles in the middle of each segment whitish pilose. Legs black; tips of all 

 the femora, narrow base of hind and basal third of front four tibiae and their 

 apices, and first two joints of front four tarsi, reddish yellow. Wings hyaline, 

 etigma luteous. 



December 31, 1921 



