Descriptions of Several New Symenopterous Insects, etc. 11 



II. — Descriptions of Several New Hymenopterous Insects from 

 tJie North West Coast of America. 



By John "W. Greene, M.D. 



(Communicated by the Smithsonian Institution.) 



Read December 6, 1868. 



1. Boiiibus interruptus, Greene. 



Muzzle yellowish ; a band of black between the eyes, above which a 

 patch of yellowish hairs, corselet yellow, a quadrangular black spot be- 

 tween wings ; sides of the thorax covered with yellowish hair ; bases of 

 wings jet black ; first, second segments, and anus black; the third, fourth, 

 and fifth segments black, fringed with yellowish hair on the lower mar- 

 gins of the segments on each side ; the fringes are interrupted on the 

 dorsal aspect of the abdomen, which is of the prevailing color, smooth 

 and shining ; legs moderately hairy, reddish black ; wings smoky ; size, 

 nearly that of B. Virginicus Fab. 



Hahitat. — E". W. Coast of America, Wash. Territ., Oregon. 



RemarTcs. — ^Tlie above description was taken from a specimen 

 obtained at Fort Steilacoom, "W. T., during the month of July^ 

 1856, by Dr. George Suckley, U. S. A. 



It is evidently a female, and has five abdominal segments 

 exclusive of the anus. The yellow hairs on the thorax of one- 

 specimen in my cabinet, have a strong ferruginous tinge, but 

 this variation is probably due to immersion in alcohol. 



Another specimen, apparently a male, differs in its greatly 

 reduced size, being about half as large, and having the dorsal 

 aspects of the abdominal segments hairy, not s7nooth; in the 

 middle, on the dorsal surface, corresponding to the bare shin- 

 ing interrupted space separating the lateral yellow fringes of 



