THE CANADIAN ENTOMOLOGIST. 171 



eleven years, I should have expected to find on the main river, 

 as the rarer and more beautiful genera seem to be found there more 

 frequently. However, one or two of the specimens were taken in town, 

 and may belong to either region ; and I think very likely that calidum 

 (Fab.) is found up the river in the fields. 



The genera I have observed upon both the main river and the affluent 

 are Scaritcs, Brachynus, Fhitynus, Pte?-ostic/ms, Cklaenins and Harpalus. 

 I think I have also taken Galcrita on the affluent, but such occurrence is 

 rare. Brachynus and Chlaenius are much more abundant on the main 

 stream, as indeed are nearly all of those given. I know of only 

 two specimens of Brachynus being taken on the affluent, while in damp 

 or wet places on the main river, which are much better suited to them, 

 they are quite plentiful. Of the genera Carahus and Cychrtis, I have 

 never met with a representative here in any section. 



This distribution is undoubtedly due to the richer flora of the main 

 river producing more varied species upon which the Carabidce prey, 

 and also to that to which in turn the richer flora is due, namely, the richer 

 soil and more favorable locality. 



MONOGRAPH OF THE EMBIDINA. 



(Contiimed from page IS5-) 



BY DR. H. A. HAGEN, CAMBRIDGE, MASS. 



6. Oligotojfia Westwoodi, n. sp. 



O. Westwoodi Hag., Synops. Embid., p. 222 (no description, not 

 named.) 



Length of body 41^ mill; exp. of wings 7 mill. 



Male : As the specimen is enclosed in copal (Gummi anime), the 

 colours are not certain, but the head, with antennae and palpi, the thorax 

 and the legs in part, seem to have been black'sh-fuscous ; head more 

 Raphidia-like than in any other species ; more than half longer than 

 broad ; the rounded sides sloping down, the occiput less than half as 

 broad as the front part with the eyes ; head above slightly convex, epistom 

 large, convex ; eyes large, prominent, about orbicular, with a smsU ex;. 



