1865.] 



75 



Easily recognized by the smooth abdomen, and by the posterior coxae 

 being toothed above. 



Bracon limatus, n. sp. 



Rufous, polished: head, antennae and legs, except posterior coxae and femora, 

 black; posterior coxa? simple; wings dark fuscous: metathorax smooth, not 

 punctured: abdomen ovate, disk of second segment with an ovate enclosed 

 6pace, the segments not excised ; ovipositor as long as the abdomen. 



Female. — Closely allied to B. armatus, from which it differs as fol- 

 lows: — The metathorax is smooth, not punctured, the central carina? 

 subobsolete ; the wings are darker ; the posterior coxse are not spinose, 

 and their femora, except tips, are rufous, instead of black ; the abdomen 

 is sculptured the same in both species. Length 3 lines; expanse of 

 wings 6 lines. 



Collection. — Ent. Soc. Philad. One specimen. 



Bracon distinctus, n. sp. 



Rufous, polished; head, antennae and legs, except base of coxae and hind fe- 

 mora, black; wings dark fuscous; metathorax large, quadrate, flattened; abdo- 

 men rather robust, abruptly deflexed behind, viewed laterally, subtriangular. 

 the venter beiug prominent; ovipositor longer than the abdomen. 



Female. — Head black, tinged with rufous on each side and beneath 

 the base of the antennae, clothed with long pale pubescence, especially 

 on each side of the face, cheeks and clypeus; just beneath the antennae 

 a square elevation depressed in the middle ; on each side and beneath 

 this elevation, the face is transversely striated ; vertex, occiput and 

 cheeks polished; antennae black (tips broken off). Thorax rufous, 

 polished ; mesothorax with the middle lobe broad, convex and very 

 prominent, the dorsal lines deeply impressed, confluent behind the 

 middle, forming a rather deep channel in which are two sharply defined. 

 longitudinal carinae, posterior margin finely striated; collar with a trans- 

 verse, rather deep furrow above; pleura highly polished, with a deep, 

 longitudinal, impressed line about the middle; scutellum flattened, 

 slightly prominent on the middle, deeply excavated in front, the exca- 

 vation divided in the middle by a short, acute, longitudinal carina; 

 metathorax large, depressed, quadrate, shining, covered above with nu- 

 merous unequal, rounded pits, most of them deeply impressed, extreme 

 sides smooth and polished; on each side behind, just above the inser- 

 tion of the abdomen, a large, rounded, rather smooth depression ; teg- 

 ulae rufous. Wings uniform dark fuscous, slightly subhyaline about 

 the lower part of the first submarginal cell; nervures and stigma black. 

 Legs black, pubescent ; base of all the cox;e and the posterior femora, 

 except extreme base and apex, rufous; tarsi, except base and apex, 



