68 [October 



and its areolet is more removed from the base of the radial area, on account 

 of the oblique position of the second veinlet; its abdomen consists apparent- 

 ly of one single segment, the second segment being so large as to cover all 

 the others; the petiole of the abdomen is tumid and has fine longitudinal 

 striae. The colors agree with Dr. Harris's and Dr. Fitch's description of 

 Ct/mps oneratiia. 



My only specimen of the true gall-fly of this gall agrees tolerably well 

 with Dr. Fitch's description of Callasjndia qucrciis glohulus, only it is 

 much larger, being about 0.21 long. I doubt therefore whether it is the 

 same species. It certainly is not a Gallaspidia. 



Besides these two flies, I obtained from the same 'galls two coleoptera, 

 Hijdnocera verticaUs Say and Otidoccplialus amerkanus Seh. (Curridion- 

 idse). The larva of the first, sharing probably the predaceous habits of 

 the other Gle.ridx, pierces, I suppose, the gall in order to consume the lar- 

 va and establish itself afterwards in the kernel of the gall where it under- 

 goes its transformation. It is in this situation that I found the beetle in 

 cutting one of the galls open. The larva of the Otidocephalus feeds prob- 

 ably on the corky substance of the gall. 



Galls in all respects similar to the gall of (Ji/nips quercus ghhulus Fitch 

 occur on the post oak; there may be a slight difference in the surface which 

 seems to be less smooth ; still as both galls vary in the appearence of their 

 surface it is difficult to say whether this difference is constant. The best 

 proof of the identity or diversity of both galls would be afforded by com- 

 paring the gall-flies. I did not obtain those of Q. ohtusUoha and the only 

 insect which escaped from the galls which I had brought home was a pret- 

 ty fly belonging to the Figitidee, of course a parasite in the gall. 



Aegilips(?)obtusilobas n. sp.— Whole body black and shining, except the meta- 

 thorax, which is rugose: antennae ( 9 ) 13-jointed, brownish-ferruginous, first joint 

 black, except at tip, last joint somewhat infuscated; feet ferruginous-yellow, in- 

 termediate and posterior ones infuscated on femora and tibi-^e: all the coxae black, 

 yellowish at tip; scutellum elevated, almost conical; a sharp margin separates its 

 anterior from its posterior side; anterior space of the pleurre punctate, posterior 

 one distinctly aciculate; petiole of the abdonien almost concealed by the funnel- 

 shaped expansioii of the anterior part of the first segment; this expansion is lon- 

 gitudinally striate; the second segment of the abdomen is broader than the, third 

 superiorly, but much narrower than it inferiorly, its posterior margin running ob- 

 liquely downwards: third segment superiorly as broad as the three following to- 

 gether, and still broader inferiorly; wings hyaline, neuration exactly like that of 

 Aegilips (as figured in the Berl. Entom. Zeit. 1860. tab. IV, fig. 3) radial area trian- 

 gular, cubital vein and areolet obsolete; thick veins pale yellowish. Length COS. 



This species does not agree with any of the genera described in Mr. 



Reinhardt's Monograph of the Fi;/ifidee (Berl. Ent. Zeit. 1860). It comes 



nearest to Afyi'i/is ![;ilid.. from which it is distinguished by the structure 



of the first se<;ni('iit <if the idHloiiien. 



