92 bulletin: museum of comparative zoology. 



broad; marginal cell long and rather broad. From the contour of the 

 radius there were probably three submargial cells, although the second trans- 

 verse cubitus is obliterated in the specimen. 



Type.— No. 2290, M. C. Z., Florissant, Col. (No. 4380, S. H. 

 Scudder Coll.). 



The type is rather poorly preserved. 



BRACONIDAE. 



This extensive family is not nearly so well represented in the collec- 

 tions from Florissant as is the Ichneumonidae, but this I believe is in 

 great part due to the fact that a larger percentage of the specimens 

 belonging here are but poorly preserved. From a count of specimens 

 belonging definitely to one or the other of these families it is seen that 

 the disparity in numbers is not so great as one might suspect from a 

 comparison of the number of species I have described in each. The 

 probable reasons for so many poorly preserved braconids have been 

 suggested on a previous page. 



The number of references by earlier writers is also quite limited, 

 and aside from the Florissant material which I have studied, only four 

 or five genera have been found fossil, Macrocentrus, Chelonus, 

 Agathis, Bracon, and possibly Hormiopterus. In the Florissant fauna 

 I have been able to recognize thirteen, several of them represented by 

 more than one species. 



The genus Calyptites described by Scudder from Quesnel, B. C, is 

 undoubtedly an ant, the presence of a large costal cell in the wing 

 described by Scudder at once removes the species from this family, 

 and the venation is typically ant-like. 1 



EUPHORINAE. 



EUPHORUS INDURESCENS, Sp. llOV. (Fig. 75.) 



Probably a female. Length 3 mm. Entirely brown or dark colored, with 

 the legs distinctly lighter. Head globose, smooth and polished on the front 

 and vertex, except for some coarse transverse rugae near the base of the an- 

 tennae. Antennae distinctly thickened toward the tips, nearly as long as the 



!Prof. W. M. Wheeler has very kindly examined Scudder's figure and confirms (:08) 

 my opinion that the species belongs to the Formicidae. 



