NORTH AMERICAN HYMENOPTERA. 59 



I^EW SPECIES OF NORTH AMERICAN CYNIPID.E. 



BY H. F. BASSETT. 



The Cynipidfe described in the following pages are the accumula- 

 tions of many years. They are, largely, the material sent me by 

 correspondents from all parts of the United States, and I regret that 

 circumstances have made it impossible for me to give earlier atten- 

 tion to their favors. 



Besides the new species here described I have thirty or forty new 

 species of galls, from which I have not yet succeeded in rearing any 

 true gall-flies, many of them extremely interesting forms, but, ex- 

 cept in one instance, I have left these to those naturalists who shall be 

 so fortunate as to secure both the galls and their producers. 



The reasons for the exception to what is, undoubtedly, the proper 

 course, viz., — not to describe a species from the gall alone — will ap- 

 pear in my monograph, the completion of which seems to myself not 

 very far off. 



I am not sure that the species here noticed are assigned to their 

 proper genera in all cases, indeed, I think a few do not belong to 

 any genus yet established, and for these provision must be made 

 hereafter. 



Although the recognized species in this country have increased 

 from less than a dozen in 1862, when Baron Osten Sacken's " First 

 Contribution to the History of the North American Cynipidse," ap- 

 peared, to more than two hundred, it is still too early to attempt a 

 classification of our species that future discoveries shall not disturb. 



Not until the relations of our agamous to their bi-sexual forms 

 shall have been fully learned can such an undertaking give satis- 

 factory results. For this reason I have abstained from genus making 

 altogether, satisfied if my descriptions shall be found sufficiently full 

 and accurate to be helpful in future studies of this interesting, but 

 exceedingly difficult family. 



RHODI'EES Hartig. 

 1. R. leiiticiilaris n. sp. 



Lentile-shaped galls in the parenchyma of the leaves of Iiosa 

 lucida, showing on both the upper and underside and from .10 to .15 



