48 AMERICAN HYMENOPTERA. 



and pectus generally ferruginous ; metathorax shining, smooth and 

 finely punctured, with indistinct carinae. 



Wings hyaline or slightly tinged with fuscous ; stigma light to dark 

 flavous ; nervures black ; discocubital vein angularly bent without an 

 appendix, or angularly broken with a more or less distinct appendix ; 

 rarely with an abnormal stub of a vein extending back into the third 

 discoidal cell ; nervulus interstitial to postf ureal, nervellus broken at 

 or above the middle. 



Legs fulvous ; claws pectinate. 



Abdomen fulvous, sometimes marked with fuscous, especially along 

 the venter; usually strongly compressed. 



Redescribed from type 9 and eight cf specimens. 



Type. — 9 . New York State Museum. 



This species is closely related to O. bifoveolatus, but may 

 be recognized by the larger, usually flavous head, which is 

 generally fulvous in bifoveolatus — the usually more strongly 

 compressed abdomen and smaller size. In the type there is 

 a stub of a vein projecting into the third discoidal cell from 

 the lower half of the discocubital vein, but this is apparently 

 abnormal, for there was never any recognized vein at this 

 place, and a homotype in the collection of the American Ento- 

 mological Society shows this abnormality in only one wing 

 and located slightly lower down. The appendix and disco- 

 cubital vein vary as in bifoveolatus. 



After carefully examining one of Viereck's paratypes of 

 Eremotylus felti^ier., in the American Entomological Society 

 collection I find that it belongs in the Genus Ophion, and after 

 comparing it with specimens of O. abnonnis I believe that it 

 is a synonym. In the paratype of E. felti the base of the 

 radial vein is slender and straight, not thickened and bent as 

 in Eremotylus ; the discocubital vein is bent as in many speci- 

 mens of O. bifoveolatus, and the third discoidal cell is short 

 and high — not long and slender as in Eremotylus. A series 

 of specimens shows that the discocubital vein varies, as in 

 bifoveolatus, from angularly bent and without appendix to an- 

 gularly broken and more or less strongly appendiculate. 



Distribution. — Washington, Montana, California, Colorado, 

 Kansas. 



This species seems to have a limited range through the west- 



