TEXAN HYMENOPTERA. 153 



HY1HENOPTER4 TEXAJfA. 



BY E. T. CRESSON. 



The present memoir is intended to contain a list of all the species 

 of hymenoptera known to me from Texas, excepting those belonging 

 to the families Chrysididae, Formicidse and the smaller Chalcididae, 

 which have not been studied. 



Besides the material in the collection of this Society, I have had 

 placed at my disposal for determination and study, the splendid collec- 

 tion of Mr. Gr. W. Belfrage, made in Bosque Co., the fine collection 

 in the Museum of Comparative Zoology at Cambridge, Mass., made by 

 Mr. J. Boll, in Dallas Co., and a small collection of Mr. L. Heilig- 

 brodt, made in Travis and Bastrop Counties. To these gentlemen, 

 and also to Dr. H. Hagen, of the Cambridge Museum, I feel greatly 

 indebted for the valuable assistance they have rendered me in the 

 preparation of this work. 



Of the nineteen families studied in this paper, over six hundred 

 species are enumerated, nearly three hundred of which appear to be 

 new, and are herein described. 



Unless otherwise indicated, the types of the new species are to be 

 found in the collection of the American Entomological Society, which 

 has been considerably enriched by liberal donations made by the 

 above named gentlemen. 



TENTHREDINID.E. 



Cimbex americana, var. Ulmi. 



Cimbex americana, Leach, Zool. Miscel. iii. p. 104; Norton, Trans, Am. Ent. 

 Soc. i.,p. 40. 



One % specimen. (Boll.) 



Abia Kennicotti. 



Abia Kennicotti, Norton, Trans. Am. Ent. Soc. i., p. 47 ; iv. p. 77. 

 One % specimen. (Belfrage.) 



TRANS. AMER. ENT. SOC. IV. (20) NOVEMBER, 1872. 



