8 PEOCEEDIlSrGS OF THE NATIONAL MUSEUM vol. 77 



front to back, being subequal to the short diameter of the eye; and 

 the ovipositor slightly shorter, being .normally almost exactly as 

 long as the body. 



Palpi stramineous; coxse always red. 



All three of the characters employed by Rohwer in his key to 

 species for distinguishing dichrous and strangaliae are subject to 

 such variation that they are unusable. 



These observations are based on eleven specimens, including the 

 type, in the National Collection, five from the Cornell University 

 Collection, and three from the Canadian National Collection. 



The male is unknown. 



The distribution of this species as indicated by the specimens 

 examined is from Quebec to Virginia, specimens being at hand from 

 Quebec, Ontario, New York, Pennsylvania, Maryland, and Virginia. 



ODONTOMERUS DICHROUS Rohwer 



Odontomerus dichrous Rohwer, Proc. U. S. Nat. Mus., vol. 45, 1913, p. 361 ; 

 vol. 57, 1920, p. 457, female. 



This and strangaliae Rohwer may be western and eastern varieties 

 of the same species, but, as pointed out under the latter species, they 

 are easily distinguished by several characters that appear to be con- 

 stant for the material examined. 



Female. — Temples usually distinctly punctate, distinctly longer 

 from front to back than the short diameter of the eye ; malar space 

 a little shorter than basal width of mandible ; ocell-ocular line longer 

 than postocellar line, diameter of an ocellus hardly two-thirds as 

 long as ocellocular line; antennae about five-sixths as long as body, 

 first flagellar joint about two and a half times as long as thick and 

 a third longer than second; pronotum strongly foveolate in lateral 

 impression and rather coarsely punctate in humeral angle; meso- 

 pleurum below and sternum strongly punctate; mesoscutum and 

 scutellum polished, very sparsely punctate, notauli indistinctly 

 foveolate; metapleurum rugose, opaque; propodeum polished, basal 

 lateral areas very sparsely punctate, pleural areas more or less 

 roughened, petiolar area sometimes rugose throughout, broader than 

 long and barely half as long as horizontal surface of propodeum; 

 nervulus antefurcal; hind tarsus hardly as long as tibia, basal joint 

 about four times as long as thick, fifth much longer than second and 

 about twice as long as third; ovipositor a little (about one-tenth) 

 longer than body. 



Palpi usually more or less inf uscate ; coxae frequently more or less 

 piceous. 



