112 Dr. A. S. Packard, Jr' Revision oj the 



angular, with a yellow stripe. Meso-thorax very coarsely punctured, 

 no mesial raphe or subniesial ridges. Scutellum convex, black ; meta- 

 scutellum with a slight yellow stripe on the anterior edge. Enclosure 

 of propodeum convex, indicated by a straight ridge passing outwards 

 and downwards, covered with coarse irregular ridges forming a net-work 

 of unequal fossa) ; mesial furrow well marked ; tubercle yellow. Wings 

 smoky, nervures bltckish ferruginous, tegulae and wing pieces black. 

 Femora black, slightly tipped with yellow ; tibiae yellow, striped with 

 black inside; tarsi greenish yellow, ferruginous beyond tips of basal joint. 



Abdomen considerably shorter than anterior part of the body, sub- 

 pedunculate, the basal segment being very concave and separated from 

 the rest by a deep suture ; lateral ridges at its insertion into the thorax 

 very large. Second segment much wider than the basal, very convex, 

 a little more so than the succeeding ones. Three pairs of lateral fas- 

 ciae, those on the second ring being twice as large and more ovate than 

 those on the fourth and fifth ; none on the third ring, tips entirely 

 hirsute. Beneath entirely black. 



$ . Head very nearly cubical, being nearly twice longer than in £ . 

 Vertex very broad, convex ; ocelli arranged in a low triangle ; orbits 

 broadly lined with a silvery pubescence; clypeus larger than % , well 

 carinated, silvery pubescent. Mandibles large and strong, acutely bi- 

 dentate, central tooth largest and longest; stained ou the middle 

 of the upper side with light yellow. 



Prothorax with a slight thin carina on each side of the mesial 

 notch ; surface of thorax not so coarsely punctured as in % , a yellow 

 stripe on the meta-scutellum, a little more than half as long as the 

 width of the piece. Surface of the enclosure of the propodeum 

 more finely and regularly striated than in the % , being puncto- 

 striate, in lines diverging from the base and mesial furrow ; tegulae 

 slightly paler than in the other sex, ferruginous. Femora swollen, 

 black, more distinctly tipped with yellow than in £ , tibia) yellow ex- 

 ternally, hind tibia; stained brown on the inside and ou the extremity. 

 Tips mucronate, contracted near the middle, deeply grooved, narrower, 

 base hardly one-half as broad as the length. 



Length of body, % , .21, 9 , .24; head and thorax together, % , .09, 

 9 , .15; abdomen, % , .12, $ , .09 inch. 



New York, New Jersey, 111., (Coll. Ent. Soc. Phil.; New York, 

 (Angus) ; New York, (Norton).* 



* Makes its cells in stems of Kaspberry — Angus. 



