370 BULLETIN XJNITED STATES GEOLOGICAL SUKVEY. [Voir. 



they are in male Colletes.) Wings liyaline, tegulse, stigma, and some of 

 the nervures testaceous, the other nervures piceous. Abdomen convex, 

 sMning, very delicately punctured; venter moderately x)ubescent, the 

 margins of the segments testaceous. 



BoMBOMELECTA n. g. {Bomhus + Meleeta). 



9 , Mandibles with a short and stout tootli on the middle of the inner 

 margin. Maxillary palpi distinctly six-jointed. Scutellum with, a short 

 spine on each side. Claws of all the tarsi alike and not dilated. Third 

 submarginal cell rather shorter than in Meleeta. In other respects this 

 genus agrees with Meleeta, which has only five joints in the maxillary 

 paljii, has the scutellum bituberculate, and the claws of the four poste- 

 rior tarsi dilated. 



BOMEOMELECTA THOKACICA (CreSS.). 



Syn. Meleeta thoraeica Cress., Eep. Wheeler's Survey, voL v, p. 72G (1876). 

 Meleeta paeifica Cress., Tr. Am. Eut. Soc. vii, ji. 91. 



The 9 specimen from "Western Kansas has a black, coriaceous, trian- 

 gular spot on the margin of the wing at the tip of the marginal cell, and 

 the face above the antennae is tufted with pale pubescence, and it agrees 

 with paeijiea var. fulvida. 



A specimen from Como, Wyoming, also collected by Mr. Williston, 

 has no such spot on the wing, the marginal cell having a very slight 

 appendiculation ; the specimen is a little smaller, has the pubescence on 

 face entirely black, has the proboscis shorter and the tooth on the man- 

 dibles less developed, and the third submarginal cell more narrowed 

 towards the marginal. 



Meleeta Edumrdsii Cress, may belong to the genus Pseudomeleeta Ead., 

 which differs from Meleeta in ha\'ing the scutellum terminate in two large 

 horizontal spines. 



