176 



THE CANADIAN ENTOMOLOGIST. 



Fig. 8. 



Gymnobates glaber, n. sp. (Fig. 8). — Pale yellowish brown. Cephalo- 



thorax smooth; about twice as long as broad, tapering in front, its basal half 



covered by an extension of the dorsum of abdomen : from each anterior 



corner of this extension is a long, stout bristle; on the cephalothorax toward 



tip is a bristle each side. Abdomen smooth ; exclusive of wings, it is 



about one and three-fourths times as long as broad, broadly rounded 



behind ; with six bristles above, two at base, two toward tip, and two on 



hind margin. On each side of dorsum is a slender wing, broadest in 



front, with four or five bristles above, three of them in front. Seta; short, 



capitate. Legs rather short, the second pair largest, joints sub-fusiform, 



tarsi broad at tip, the tibia with a long hair at tip above. A lamella 



behind coxa I. Genital opening nearly circular, nearly twice its diameter 



from the much larger anal opening, the latter sub-elliptical and emarginate 

 in front. Length, .45 mm. 



One specimen taken from a dry gall, at Washington, D. C. 



Trichotarsus osmice, Dufour. — I have taken specimens of a species 

 of Trichotarsus from a species of Osmia, at Sea Cliff, N. Y., which 

 appears to agree in all particulars with this European species. It is, of 

 course, possible that when the adult females of these forms are known, 

 they may present differences. This species differs from the more common 

 T. xylocopce in having two claws at tips of tarsi I., II. and III 



Trichotarsus xy/ocopa, Dufour. — Prof. H. Osborn has recorded this 

 species as taken from a Californian Xylocopa, and sent him by Mr. 

 Coquillett. It is a common European species. 



