456 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



8. Median carinaeof the propodeum obliterated; angles of the propodeum prominent 



but hardly toothed ; legs red alaskensis Rohwer. 



Median carinae of propodeum well developed ; angles of propodeum toothed . 9. 



9. Females 10. 



Males 11. 



10. Facial quadrangle (area between the eyes) with its width greater than or subequal 



with its length; ovipositor subequal with the length of the body; first tergite 

 short and broader, seen from the side evenly arched and without a carina from 

 the spiracle to the apex; postocellar line much shorter than ocellocular line. 



mellipes (Say). 

 Facial quadrangle with its length greater than its width ; ovipositor distinctly 

 longer than the body; first tergite lengthened, the chitinized part of the eternite 

 extending well beyond the spiracle, and as seen from the side somewhat flat- 

 tened with a complete or interrupted carina from the spiracle to apex. 



canadensis Provancher. 



11. Hind legs black vicinus Cresson. 



At least the hind femora rufous 12. 



12. Facial quadrangle with its width and length subequal or with the width greater; 



hind tibiae rufous mellipes (Say). 



Facial quadrangle longer than wide; hind tibiae usually black. 



canadensis Provancher. 



ODONTOMERUS ATRIPES Rohwer. 



Odontomerus atripes Rohwer, Proc. U. S. Nat. Mus., vol. 45, 1913, p. 358. 



Type.—Ca.t. No. 15372, U.S.N.M. 



This species is known only from the type material. 



Franconia, New Hampshire; Princeton, Maine. 



ODONTOMERUS ABDOMINALIS Cresson. 



Odontomerus abdominalis Cresson, Proc. Ent. Soc. Phila., vol. 4, 1865, p. 289. 



Type.— Cut. No. 1527, Acad. Nat. Sci. Philadelphia. 



This species is known only from the type material and the following 

 notes are taken from the type. 



Basal area and areola confluent; if the basal area were defined 

 where it becomes confluent with the areola it would be twice as wide 

 anteriorly as posteriorly; areola hexagonal, the posterior end straight; 

 angles of the propodeum not sharply toothed; first tergite with 

 sparse punctures; the following segments nearly impunctate; notauli 

 not foveolate; nerve llus broken below the middle. 



Colorado. 



ODONTOMERUS BICOLOR Cresson. 



Odontomerus bicolor Cresson, Trans. Amer. Ent. Soc, vol. 3, 1870, p. 169. 



Type.~Ca.t. No. 1526, Acad. Nat. Sci. Philadelphia. 



The characters given in the above table sufficiently distinguish 

 this species from its allies. Besides the type material, two females 

 from Call, Texas, reared from the bark of pine by W. F, Fiske, have 

 been examined. 



Canada; Pennsylvania (Cresson); Texas. 



