ART. 3 EEVISIOISr OF ICHlSTEUMOlSr-FLIES CUSHMAN \) 



Male. — Heretofore this species has been known only in the female. 

 The National Collection contains a single male that appears to be 

 of this species. It differs from the female much as does the male 

 'of atripes Rohwer. The abdomen is black, the hind legs are nearly 

 black, and the wings nearly hyaline. From the male of atripes it is 

 easily distinguished by its red front and middle femora, more slender 

 hind femur, longer and more slender hind tarsus, and the weakly 

 developed propodeal apophyses. From the male of viciwas Cresson, 

 which it closely resembles, its narrower temples and black front and 

 middle coxae sufficiently distinguish it. 



The male specimen described above was taken at Kaslo, British 

 •Columbia, by H. G. Dyar. 



The foregoing discussion is based on seven females and one male 

 in the U. S. National Museum, two females in the Cornell Collection, 

 and two females in the Canadian National Collection. All of these 

 specimens are from the States of Washington and Idaho and the 

 Province of British Columbia. 



ODONTOMERUS AETHIOPS Cresson 



•Odontomerus aethiops Ceesson, Proc. Ent. Soc. Phila., vol. 4, 1865, p. 289. — 

 ROHWE3B, Proc. U. S. Nat. Mus., vol. 57, 1920, p. 457, female, male. 



Sufficiently distinct, in the female, from any of the other North 

 American species by its entirely coal-black body and legs, to make 

 detailed discussion unnecessary. In most details of structure it is 

 very similar to atripes Rohwer. I have not seen the male, though 

 judging from the original description its deep black color, especially 

 of the legs, and punctate abdomen would distinguish it from the other 

 black-legged males. 



As pointed out under atripes the specimen recorded by Johnson 

 in the Mount Desert list as aethiops is a male of atrijjes. 



ODONTOMERUS ALASKENSIS Rohwer 



Odontomerus alaskensis Rohwer, Proc. U. S. Nat. Mus., vol. 45, 1913, p. 360 ; 

 vol. 57, 1920, p. 457. 



Only the two specimens of the type series are known. It is very 

 distinct from any of the other species by reason of the obsolete 

 anedian and basal carinae of the propodeum. Other significant 

 characters not noted by Rohwer are as follows : Temples almost 

 flaring; basal joint of flagellum barely longer than second joint; 

 thorax distinctly depressed, horizontal face of propodeum flat, 

 straight in profile and about four times as long as petiolar area, 

 apical carina strong and practically without apophyses; base of 



