﻿30 POMONA JOURNAL OF ENTOMOLOGY 



lateral margins incurved, the surface shining and with scattering coarse punc- 

 tures. 



This well marked wasp is common at Claremont, California, during the 

 month of April. I have named it for Dr. A. J. Cook, the veteran head professor 

 of Biology in Pomona College. 



Belomicrus cladothricis Ckll. 

 This species is common about Claremont, California, during the early spring 



Belouiicrus forbesii Robt. 

 I have specimens of this species taken at Denver, Colorado, by Oslar. 



