1865.] 301 



Heath the stigma ; nervuves black ; legs entirely black ; abdomen san- 

 guineous, much narrowed at base, polished ; the two basal segments 

 sculptured much like those of B. montivagus, but not so rough; ovipo- 

 sitor as long as the body. Length 3 lines; expanse of wings 7 lines. 



One specimen. Closely allied to the two preceding species, but 

 smaller, the wings longer in proportion to the length of the body, the 

 second submarginal cell longer, and the abdomen less roughly sculp- 

 tured. 



I. Bracon palliventris, n. sp. 



Black; abdomen broad-ovate, yellowish-red above, yellow beneath, the su- 

 tures and impressed lines striated: wings fuliginous; ovipositor very short. 



Female — Black, polished, thinly clothed with whitish pubescence; 

 antenna 1 as long as the body, black ; wings uniform fuliginous, with 

 several indistinct subhyaline nervures beneath the stigma; second sub- 

 margiual cell very long ; legs entirely black ; abdomen short, broad-ovate, 

 yellowish-red, shining ; basal segment excavated at base, deeply channel- 

 led on each lateral margin which is carinate, and prominenton the middle ; 

 second segment with a broad sublanceolate space on the basal middle, en- 

 closed by an impressed striated line which continues, somewhat obliquely, 

 on each side almost to the lateral margin enclosing a smaller space on each 

 side at base ; base of the third, fourth and fifth segments deeply ex- 

 cised and striated; the apical segment and the venter yellowish; ovi- 

 positor less than half the length of the abdomen, ferruginous, valves 

 black. Length 2| lines; expanse of wings (3 lines. 



Two specimens. Readily recognized by the impressed lines of the 

 abdomen being striated. 



5. Bracon croceiventris, n. sp. 



Black ; abdomen bright orange-yellow ; wings fuliginous. 



Male. — -Slender, black, polished, thinly clothed with whitish pubes- 

 cence; antennae longer than the body, entirely black ; metathorax sub- 

 obsoletely striated behind; wings long, uniform dark fuliginous, without 

 subhyaline spots beneath the stigma, somewhat iridescent; nervures 

 blackish, stigma fuscous, the costal margin black; legs entirely black, 

 with a piceous tinge ; abdomen elougate-subovate, shining, uniform 

 bright orange-yellow, pubescent; first segment with a conical elevated 

 space on the middle enclosed by a deep, slightly crenulated suture, 

 which is confluent with a similar sutm-e on the second segment at base, 

 enclosing an obconic elevated space, the two elevations together form- 

 ing an elongate fusiform elevation, divided in the middle by the suture 

 between the first and second segment ; apex obtusely pointed, and 

 faintly tinged with dusky. Length 21 lines; expanse of wings 5 lines. 



