ART. 3 REVISION OF ICHNEUMON-FLIES CUSHMAN 7 



the Cornell Collection there are two specimens of (Mchrous Kohwer 

 determined by him as abdominalis. 



The type of hrevicaudus, new species, described below, was com- 

 pared with the type of abdominalis for me by Miss Grace Sand- 

 house on a recent visit to Philadelphia. About the only differences 

 noted are the longer ovipositor in abdominalis (as long as body) 

 and its lack of apophyses on the propodeum. I have not examined 

 the type. 



ODONTOMERUS BREVICAUDUS, new species 



Female. — Length 7 mm. ; antennae 6 mm. ; ovipositor 6 mm. Very 

 closely related to dichrous Rohwer and perhaps only somewhat 

 unusual specimens of that species but the two females before me 

 differ constantly from that species as follows: First flagellar joint 

 barely, second much less than, twice as long as thick; mesoscutum, 

 scutellum, and basal lateral areas of propodeum evenly, finely punc- 

 tate; entire mesopleurum except speculum distinctly punctate; hind 

 femur stouter; tarsus much shorter than tibia; its basal joint little 

 more than three times as long as thick; ovipositor distinctly shorter 

 than body. 



Color as in dichroU'S, black with abdomen and legs reddish, coxae 

 and trochanters piceous, and wings somewhat infumate. 



Type-locality. — Hedley, British Columbia. 



Type. — Canadian National Collection. 



Paratype.—C2it. No. 42033, U.S.N.M. 



Two specimens, the type taken July 23, 1923, by C. B. Garrett, 

 and the paratype captured by H. L. Seamans at Waterton, Alberta, 

 on July 10, 1923. 



In the paratype the left antenna is entirely missing and of the 

 right only the scape and pedicel are present. It is about 10.5 mm, 

 long with ovipositor 9 mm. 



ODONTOMERUS STRANGALIAE Rohwer 



Odontomerus strangaUae Rohwer, Proc. U. S. Nat. Mus., vol. 53, 1917, p. 457, 



female. 

 Odontomerus abdominalis Bradlet, Bull. Brooklyn Ent. Soc, vol. 13, 1918, 



p. 103 (part). 



This eastern species is very closely allied to the western dichrous 

 Rohwer, perhaps only a variety of that species. However, it appears 

 to differ constantly in the lack of foveolation in the pronotal impres- 

 sion; in having the temples and mesopleurum and sternum very 

 sparsely punctuate; the petiolar area nearly or quite as long as 

 broad and more than half as long as the horizontal surface of pro- 

 podeum, the nervulus interstitial ; and the tarsi slightly more slender,, 

 though the proportionate length of the joints is about the same as 

 in dichrous. Usually also the temples are slightly shorter from 



