No. 2317. FIVE TRIBES OF ICHNEUMONINAE—ROHWER. 457 



OOONTOMERUS STRANGALIAE Rohwer. 



Odontomerus strangaliae Rohwer, Proc. U. S. Nat. Mue., vol. 53, 1917, p. 158. 



Type.— Csit. No. 18999, U.S.N.M. 



Besides the type material this species is represented in the Museum 

 by material from Montgomery County, Pennsylvania, and from 

 Oswego, New York, from Rosslyn (H. H. Smith) and Falls Church 

 (T. E. Snyder and Wm. Middleton) Virginia. Specimens collected 

 at East Falls Church, Virginia, by Nathan Banks have also been 

 examined. 



Host. — Strangalia luteicornis. 



ODONTOMERUS DICHROUS Rohwer. 



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



Type.—C&t. No. 15375, U.S.N.M. 



Besides the single type two females from Idaho have been examined. 

 One was collected by R. W. Doane, the other, from Moscow, by 

 C. V. Piper. 



Washington, Idaho. 



ODONTOMERUS AETHIOPS Cresson. 



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



Type.— C&i. No. 1524, Acad. Nat. Sci. Philadelphia. 



This species is easily recognized by its color; the female is short, 

 stout, and has the propodeum shorter than mesoscutum; first 

 tergite short, shaped much as it is in mellipes but there is a carina 

 from the spiracle to the apex. Besides the type material a single 

 female from Myer, California, reared by F. B. Herbert from a Ceram- 

 bycid in lodge-pole pine {Pinus murryana) has been examined. 

 Professor Cockerell tells me he has collected a female of this species 

 in Peaceful Valley, Boulder County, Colorado, August 26, 1918. 



Colorado, California. 



ODONTOMERUS ALASKENSIS Rohwer. 



Odontowems atoitensis Rohwer, Proc. U. S. Nat. Mus., vol. 45, 1913, p. 360. 



Type.— Cat. No. 15373, U.S.N.M. 



This species differs from all other American species of the genus 

 by the obliterated median carinae of the propodeum. It is known 

 only from the type material. 



Sitka, Alaska. 



ODONTOMERUS VICENTUS Cresson. 



Odontomerus vicinus Cresson, Trans. Amer. Ent. Soc, vol. 3, 1870, p. 168. 



Type.— C&i. No. 1525, Acad. Nat. Sci. Philadelphia. 



This male may prove to be the opposite sex of one of the females 

 which has a red abdomen, possibly strangaliae. Areola with a few 

 transverse carinae; posterior lateral angle of the propodeum not 



