378 [May 



Walsh (=q. lanse Fitch?) in August; to him I owe the communica- 

 tion of some specimens. 

 7. Synergus mendax Walsh. 2- Proc. Ent. Soc. II, 498. 



A specimen, communicated to me by the author, enables me to add 

 the following remarks to his description : 1st. The sculpture of the 

 mesonotum is very rough and not unlike that of S. dimorphus, consist- 

 ing apparently of transverse, projecting ridges, with intervening smooth 

 and moderately shining spaces; only the ridges appear here moi - e ele- 

 vated and sharper, but at the same time wider apart than in $. dimor- 

 phus and thus the surface of the thorax is more rough, but at the same 

 time more shining than the latter species. 2nd. The polished spot on 

 the pleurae is almost smooth in this species; however, under a strong 

 lens and in an oblique light, the sculpture, common to the other species 

 of the genus, becomes apparent here. 3rd. The general shape of the 

 body is more elongated than in S. dimorphus ; the abdomen, seen from 

 the side, appears more elongated, as its transverse diameter appears, 

 comparatively, much shorter than that of the other species. 4th. Mr. 

 Walsh calls the ventral valve "unarmed"; but the specimen he com- 

 municated me, of this species, distinctly shows a projecting point beyond 

 the tip of the valve. 



Bred by Mr. Walsh from the gall of C. q. podagrse Walsh, together 



with S. llgnicola 0. S. {S. rhoditiformis Walsh). 



p. s. — Since this article was presented to the Society, I have received from 

 Mr. Bassett galls of his Cynips hirta. They look precisely like the galls of Q- 

 pisum Fitch {=pezomachoides nob?) only they seem usually to be a little smaller, 

 and the netting on the surface is more dense. In the Synoptical Table of the 

 galls, those of C. hirta have therefore to be put next to those of C. pezomachoides. 

 Both produce apterous gall-flies. 



IKfttX, 



Being at the same time a synonymical catalogue of all the described 

 N. A. Ci/nipidse, exclusive of Figitidse. 



Observation. — An asterisk near a specific name signifies that I have 

 not seen the species ; an interrogation (?) that the location of the spe- 

 cies in the genus is doubtful. Species united by brackets are probably 

 phytophagic varieties. The subdivision of the genus Cynips in genera 

 is subject to the doubts and limitations expressed in the body of my 

 paper, and is, for this reason, only provisional. I have thought it con- 

 venient to retain the subdivision of this genus in two groups, according 

 to the kinds of oaks which the species inhabit ; this subdivision is, as 

 I have shown, very often coincident with the generic subdivisions, 

 although I would not affirm that it is always so. 



