rnOCEEDlNGS OF THE NATIOXAL MUSEUM. 123 



wanting, but anteriorly are two short median grooves, and there is the 

 usual groove on the shoulders. Scutellum coarsely- rugose, with two 

 broad, approximate foveas at base, separated by a slight carina. Pleura 

 punctate. Abdomen polished, but wholly covered with an exceedingly 

 fine, delicate punctuation. Wings glassy, hyaline ; veins thick, piceous. 



Type.— No. 3072, TJ.S.X.M. 



Three female specimens, collected at St. Louis, ^lissouri, by Br. Kiley; 

 one reared September 6, 1870; two reared October 12, 1881. 



Genus CYNIPS, Linnaeus. 

 18. CYNIPS FLAVICOLLIS, new species. 



Female. — Length, 4.4 mm. Head and collar brownisli yellow, meso- 

 notnm, scutellum, and mesopleura black, abdomen reddish brown, the 

 apices of segments dusky, antemue and legs dark brown. The head 

 and' thorax are finely punctate and the whole insect is covered with 

 long grayish pubescence, the dorsum of the abdomen alone being 

 bare. Head dusky on vertex; mandibles bluntly bidentate. AntennoB 

 ll-Jointed, a little thickened at tips, the third joint longer than scape 

 and pedicel together; joints 10, 11, 12, and 13 only slightly longer than 

 thick. 



The grooves on the thorax can be distinctly detected througli the 

 pubescence; two short median grooves anteriorly and a coarse groove 

 on the shoulders. Scutellum minutely rugose, with two ap[)roximate, 

 not deep, fovea' at base. Tlie abdomen is longer than the head and 

 thorax together, much compressed, the ovipositor sheaths projecting 

 black, the spine of the ventral valve not quite as long as the terminal 

 tarsal joint. 



Wings hyaline, pubescent, veins dark, piceous or brown; the angula- 

 tion of the vein at base of marginal cell is long and very acute, areolet 

 large, the cubital cell open at base. 



Type.— No. 3073,U.S.N.M. 



Described from one female specimen labeled simply " S. V. Summers," 

 and probably collected in Illinois. The brownish-yellow head and col- 

 lar will readily separate this species from all others in the genus. 



19. CYNIPS SULCATUS, new species. 



Female. — Length, 3 to 4 mm. Head, thorax, and legs, including coxre, 

 brownish yellow, abdomen and X)osterior tibiiie dark brown, eyes black, 

 antenna', amber-colored and slightly dusky toward apex. Head closely 

 punctate, thorax sparsely punctate, with slight wavy aciculations, 

 pubescent. Antenn;e lo-jointed, rather long, the third joint very long, 

 one-third longer than the fourth, the following joints gradually sub- 

 equal, the last being slightly longer than the preceding. The parapsidal 

 grooves are abbreviated anteriorly; two short median grooves ante- 

 riorly and the grooves on the shoulders are surrounded by dusky bands. 

 The scutellum, as well as the thorax, the abdomen, and the legs, are well 



