ART. 3 EEVISION" OF ICHNEUMON-FLIES CUSHMAN 15 



ascribed to it by Bradley occur in one or anotiier of the specimens of 

 that species that I have examined. 



ODONTOMERUS VICINUS Cresson 

 Figs, la and 4& 



Odontmneriis vioimis Ckesson, Trans. Amer. Eat. Soc, vol. 3, 1870, p. 168, 

 male. — Bradley, Bull. Brooklyn Ent. Soc, vol. 13, 1918, p. 102, female, male. — 

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



Odontmnerus canadensis Rohwee, Proc. U. S. Nat. Mus., vol. 57, 1920, p. 458, 

 fig. 12, female (part). 



Bradley was correct in his association of the sexes, while Rohwer 

 had the female associated with cmiadenms. 



The very broad flaring temples appear at present to be sufficiently 

 characteristic to distinguish the female of this species from any of 

 the other species with black body and red legs, while the male is 

 further characterized by the black hind legs. 



It is the most slender of all this group of species, the first tergite 

 in the female being three to three and a half times as long as broad, 

 with the sternite reaching nearly half way between spiracle and 

 apex; and the abdomen beyond distinctly narrower. The occiput 

 is rather shallowly concave and about as broad as the head measured 

 across the eyes, while the temples flare prominently; the antennae 

 are about as long as the body and very slender. The notauli are 

 posteriorly foveolate; the petiolar area of the propodeum is very 

 short, the apical carina not arching toward the base medially but 

 extending nearly straight across between the apophyses; the hind 

 tarsus is A^ery nearly as long as the tibia with second and apical 

 joints about equal in length, the apical sometimes hardly as long 

 as the second joint; the front tarsus is nearly a half longer than 

 tibia with the apical joint hardly as long as the second ; the ovipositor 

 sheath is about a half longer than the body. 



In the male the mesoscutum and scutellum are densely punctate 

 and the abdomen entirely opaque granulose, with the basal tergites 

 more or less rugulose. 



The foregoing discussion is based on 12 females and 7 males in 

 the United States National Museum, 16 females and 6 males in the 

 Canadian National Collection, 3 females and 2 males from Cornell 

 University, 2 females and 4 males from the Boston Society of Natural 

 History, and 2 females in the Pennsylvania State Collection. 



These specimens show a range from Quebec to Virginia, the 

 following Provinces and States being represented : Quebec, Ontario, 

 New Hampshire, Massachusetts, New York, Pennsylvania, Mary- 

 land, District of Columbia, and Virginia. 



U. S. GOVERNMENT PRINTING OFFICE: 1930 



