180 Journal New York Entomological Society. [voi. vii. 



small black bristles. The black on the dorsum of the thorax is partially concealed by 

 whitish pollen and whitish yellow pile ; the posterior pair of the four dorsal bristles is 

 situated in the yellow rectangular area in front of the scutellum and arise from large 

 black dots, the anterior pair arising from smaller dots is situated along the anterior 

 margin of this area ; metanotum, a spot back of the base of the wing, a spot at the 

 base of the halteres, and another above the posterior coxae, black ; legs wholly yellow, 

 tarsi slightly darker. Abdomen wholly yellow with the following black spots on 

 the male : two on the anterior margin of the second segment near the middle ; four 

 on the anterior margin of the third, fourth and fifth segments, two of which are median 

 and two lateral ; two on the posterior lateral margin of the fifth segment. Female 

 with the black spots as in the male with the addition of the four borne on the sixth 

 segment, but with none on the posterior lateral margin of the fifth ; ovipositor reddish 

 yellow, black at extreme tip, flattened, longer than the three preceding segments taken 

 together ; pile of abdomen whitish yellow ; bristles black. 



^Yings rather long and narrow ; whitish hyaline with a brownish yellow picture 

 which extends along the costal border from the base of the wing to the tip of the 

 first vein ; the first portion reaches posteriorly as far as the sixth vein, covering the 

 basal cross-veins and leaving only the basal portion of the Second basal cell and a 

 small spot at the extreme base of the sub-marginal cell, hyaline ; the second por- 

 tion of this picture extends posteriorly only to the third vein ; the band arising at the 

 tip of the first vein and extending over the anterioi cross-vein fades out about the 

 middle of the third posterior cell ; the second band, however, which arises on the 

 costa some distance before the tip of the second vein and extends across the posterior 

 cross-vein reaches almost, if not quite, to the posterior margin of the wing ; seaming 

 the tip of the wing and connected along the costal border with the second cross-band 

 is another band reaching a little beyond the tip of the fourth vein. All these bands 

 are edged with darker brown ; veins yellowish or brownish ; first with bristles ; third 

 with three or four bristles at the point where the second vein branches from it. 

 Along the posterior border of the wing and in a large triangular spot in the first and 

 second posterior cells the whitish hyaline is replaced by a much darker hyaline. 

 Length, (J 4.5 mm. ; f 5 to 6 mm. Sixteen males, six females. 



Habitat: Washington. 



Different from T. occidentalis, which it must closely resembles, in 

 the following particulars : Smaller, dark reddish yellow instead of 

 lighter yellow ; pile on thorax and abdomen not so long or dense ; 

 wings comparatively narrower. I have a large series of both species 

 before me and find these differences to be constant with no inter- 

 mediate form. 



(Edaspis anthracina, sp. nov. (PI. Ill, Fig. 3). 



9 • Deep shining black ; front rather broad ; yellowish brov/n with a median 

 narrow dark brown line running forward from the dark brown ocellar triangle to meet 

 a crescent shaped line of the same color which extends transversely across the middle 

 of the front ; beside the usual bristles on the vertex and front which are black, the 

 head is furnished with short, bristle-like or stubble-like white hairs of which there is 



