56 THE CANADIAN ENTOMOLOGIST. 



galls from that section, and I take pleasure in giving to it the name of 

 its discoverer. 



Cynips Q. nubila, n. sp. 



Galls : Densely l^iiry, sub-globular or hemispherical clusters of galls 

 on the under side oi leaves of an unknown species of oak; always on the 

 mid-vein. When fresh the hairs are of a tine deep crimson, but fade 

 somewhat in drying. At the base they are yellowish white. The galls in 

 each cluster grow from the same point on the leaf, and the clusters are 

 from one-half to one inch in diameter, and contain from one to five or 

 more galls or larval cells. The cells, denuded of their covering of 

 hairs, are nearly globular, tapering, however, to an obtuse point at the end 

 attached to the leaf, and they measure from three-sixteenths to nearly or 

 quite half an inch in diameter. The shell is about .02 of an inch in 

 thickness (thicker than this at the base, however,) and is very hard and 

 brittle when dry ; it contains no larval cell, and its inner surface is slightly 

 roiighened as if gnawed. 



These galls, in their dense hairiness and in their size and outward 

 appearance, resemble closely those of C. q. tenniconiis n. s. from the same 

 locality ; but while in this species the larval cells are separate, in tenui- 

 coniis they are enclosed m an envelope of a dry porous con- 

 sistence. The fine crimson color, too, seems to be a constant char- 

 acter of C. q. nubila, and the insects from the two galls are widely different. 

 Gall-fly : All females. Head very small, dark reddish brown. Vertex 

 finely punctate or crackled. Ocelli shining, of medium size, x^ntennae 

 13-jointed, rather slender, the base prominent ; ist joint tapering from its 

 abruptly truncate summit ; 2nd short, ovoid ; 3rd one-fourth longer than 

 the two preceding taken together; 4th equal to the ist and 2nd; 5th to 

 8th gradually shorter; 9th to 12th sub-equal; 13 th slightly longer than 

 the 1 2th. The joints, particularly the 3rd, 4th and 5th, closely connected, 

 but with a slight enlargement at the nodes in these last mentioned. 



Thorax very dark reddish brown, in certain lights appearing black, 

 covered with very short appressed hairs, which give a slight ashen hue to 

 the surface as seen with the naked eye. Two fine, smooth, rather indis- 

 tinct parallel lines reach half way from the collare to the scutelluni, and 

 two distinct grooves from the collare, converging towards the scutellum 

 and increasing in size as they approach that point. Scutellum distinctly 

 wrinkled or rugose. Legs very dark reddish brown, somewhat shining, 



