14 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 77 



tergite irregularly roughened, usually longitudinally impressed medi- 

 ally; ovipositor sheath fully as long as body but not much longer; 

 palpi stramineous; hind tarsus black, apex of femur and extensor 

 surface of tibia sometimes blackish, especially in small specimens, 

 the under side whitish (entire tibia black according to Provancher). 



In the male all the flagellar joints are at least twice as long as 

 thick, and the first joint fully three times as long as thick and only 

 slightly thicker and longer than the second ; hind tarsus very nearly 

 as long as tibia, apical joint not or barely as long as second ; that of 

 middle leg barely longer than second; first tergite five or six times 

 as long as broad; hind tarsus, usually the tibia, and sometimes the 

 femur dorsally, black or fuscous. 



In the series assigned to this species there is great variation in the 

 relative length and breadth of the first abdominal segment, especially 

 in the female, but it is quite obviously variation and not of specific 

 significance. 



The foregoing discussion is based on 57 females and 57 males, of 

 which 33 females and 26 males are in the National Museum, 7 

 females and 10 males from the Canadian National Collection, 8 

 females and 11 males from the Cornell Collection, 7 females and 10 

 males from the Boston Society of Natural History, and 2 females in 

 the Pennsylvania State Collection. 



This species is apparently distributed entirely across southern 

 Canada and south to Oregon, Virginia, and New Mexico. 



Rohwer's figure of the supposed female of canadensis is drawn 

 from a specimen of vicinus Cresson. The head is poorly drawn in 

 that it does not show the distinctly flaring temples of vicinus. 



ODONTOMERUS STRIATUS, new species 



Female. — Length 12 mm. 



This may be nothing more than a somewhat anomalous specimen of 

 canadensis, from dark legged specimens of which it differs prac- 

 ticall}^ only in having the postpetiole evenly convergently striate and 

 the base of the second tergite evenly, finely, longitudinally striate. 

 In the hind legs the femur at apex, the tibia above, and the entire 

 tarsus are black, the lower side of tibia whitish. 



Type-locality. — Lyme, Connecticut. 



Type.—C^^t. No. 42036, U.S.N.M. 



One female taken by William Middleton on June 19. 1918. 



ODONTOMERUS ALBOTIBIALIS Bradley 



Odontomeriis alhotibialis Bradley, Bull. Brooklyn Eut. Soc, vol. 13. 191S, p. 103, 

 female. 



Described from a single female specimen, which I have not seen. 



Were it not for the great length of the ovipositor I would suspect 



it to be a variant of canadensis, for all of the other characters 



