Vni MONTHLY PROCEEDINGS 



Gall-fly. — J. Length .20 inch, black. Head and thorax rugosely punctate, 

 pubescent; eyes brown; antennae 13-jointed, short, pubescent, black, third joint as 

 long as one and two combined, mesothorax bulging, no parapsidal grooves; scu- 

 tellum bifoveolate; abdomen smooth, black, second segment occupying the whole 

 upper surface, the others are telescoped inside it ; wings fuliginous, radial area 

 almost closed, areolet open. 



Described from nine 9 bred specimens. 



This is somewhat similar to the gall Cynips q. globulus Fitch, but 

 there is not a particle of resemblance between the flies. 



GrALLS ON CiNEREOUS Oak, — Quercvs cinerea. 



Close observations of this oak, from the falling of the leaves to the 

 budding of the new leaves in early spring, result in the discovery of 

 several interesting galls as diffuse in character and structure as one could 

 imagine. 



The gall makers of some of these I describe below ; others on account 

 of the great difficulty in breeding, yet remain unknown. 



Cynips q. medullse n. sp. 



Galls. — A gradual swelling surrounding a branch or twig from an 

 inch and a half to three inches in length, and from half an inch to one 

 inch in diameter ; internally hard and woody, the larvae living with heads 

 imbedded in the pith or heart of the twig and the wood swells above 

 them. 



Gall-fly. — 9* Length .12 inch; Reddish brown, rugoso-punctate ; head widei- 

 than thorax, more finely rugosely punctured on vertex, deep grooves converging 

 towards mouth, mandibles black, a few short appressed hairs back of eyes; an- 

 tennse 14-jointed, subclavate, first joint thickened at tip, second short, third as 

 long as first, thence to seventh subequal, the remaining joints about equal in 

 length but widening at tip; parapsides distinct, the meso-scutum also has a cen- 

 tral median groove which becomes faint anteriorly, pleura grooved; scutellum 

 rugoso-punctate, bifoveolate; abdomen red-brown, smooth and shining; legs red- 

 dish brown; wings hyaline, very pale, with yellowish tinge, radial area and 

 areolet entirely obliterated. 



An easily recognized species. Described from four 9 bred specimens. 



This species seems to be greatly depredated upon by a Figites, out of 

 many galls all produced parasites but those above recorded. 



The gall-fly of another species affecting this oak I have just succeeded 

 in raising this spring, after many previous ineffectual attempts. 



The galls appear in early spring and are soft, bristly and sticky. The 

 immaturity of the specimens was probably the cause of my not succeeding 

 before. 



The fly does not appear until the following year, February and March. 



