MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 329 



thorax with a grooved central ridge, the pleura pubescent. Antenntp 

 10-jointed; in the $ honey-yellow, with a G-jointed cylindrical club, the 

 flagellum one and two-thirds the length of the scape, the pedicel a little 

 more than half the length of the lirst fnniclar joint, the second fuuiclar 

 joint cyathiform, longer than the first; club joints snbmoniliform, longer 

 than thick; in the 9 black, the pedicel nearly as long as the first fnniclar 

 joint, the first, one-third longer than the second, the second cylindric, 

 the riagellar joints a little longer than thick, the last conical, longer 

 than the preceding. Tegulfe rufo-piceous. Wings hyaline. Abdomen 

 polished, about as long as tlie head and thorax united, much depressed, 

 widest toward the apex and obtusely rounded, narrowed toward the 

 base; petiole longer than thick, finely rugose, with a V-shaped carinated 

 space above; secontl segment elongate, with 2 finely shagreened foveae 

 at base. 



Habitat. — Indiana, Canada, Western States, and Texas. 



Specimens in National Museum and Coll. Ashmead. 



Tsocybus canadensis Prov. 



Plafiif/aster canadevsis Prov., Add., p. 181. 



Monocrita canadensis Aslmi., Can. Eiit., xix, p. 126; Cr. Syu. Hyni., p. 250. 



9. Length, 3""". Black, minutely, closely, rugoselyjxmctate; antennae 

 and legs, except coxfe, brownish-yellow. The i)edicel and second fnniclar 

 joint are about equal, two-thirds the length of the first fuuiclar joint, 

 the second fnniclar joint being obliquely truncate at tip; club 6-jointed, 

 rather stout, the first two joints not longer than thick, the three fol- 

 lowing a little longer than thick, the last a little longer than the penul- 

 timate. Thorax trilobed, minutely, rugosely punctate, the middle lobe 

 smoother anteriorly, the lobes posteriorly and the high convex scutellum 

 covered with a sparse fuscous pubescence. Mesopleura deeply im- 

 pressed or foveated at the middle, smooth, shining, except the piece 

 beneath the anterior wing, which is distinctly striated posteriorly. 

 Wings subfuscous. Abdomen oblong-oval, narrowed at base, the 

 petiole fluted, opaque, pubescent; body of abdomen smooth, polished, 

 the second segment at base with two foveolse, pubescent both above 

 and beneath. 



In the S the antennae are usually wholly yellow, the second fuuiclar 

 joint being louger and thicker than the pedicel, the first small, subtri- 

 angular, not longer than thick, the club joints about twice as long as 

 thick, the last not quite twice as long as the penultimate. 



Habitat.— Ottawa, Canada. 



Types, S and 9 , in Coll. Ashmead. 



Provancher described this species from the male sex alone, a type 

 specimen of which was kindly sent me by Mr. Harrington. 



The fuscous streaks in the wings, resembling nervures, misled me 

 into describing it as a species of Monocrita before I had seen the type. 



