1865.] 71 



their coxae, entirely black, slightly pubescent ; posterior coxae slightly 

 rufous at base. Abdomen broadly ovate, polished, depressed; first seg- 

 ment deeply excavated at base and on each side, with a swelling on the 

 middle, on the disk of which there is another excavation divided by a 

 longitudinal carina, the excavation on each side of the swelling has a 

 slight longitudinal carina, the lateral margins are carinated and reflexed, 

 the apical angles being very prominent ; second segment deeply and 

 transversely excavated on each side at base, and on the middle a deep 

 rounded excavation slightly striated and divided by a longitudinal ca- 

 rina which proceeds from an elevated polished space on the basal mid- 

 dle, the apical margin of this segment suddenly rounded on each side, 

 behind which the basal angles of the third segment are prominent or 

 tuberculated ; third segment deeply incised and striated at base, the 

 incisure passing both before and behind the prominent basal angles ; 

 fourth and fifth segments also deeply incised at base, the incisure 

 striated ; remaining segments suddenly narrowed, the terminal one 

 pilose; venter concave ; ovipositor shorter than the abdomen, rufous, 

 valves black. Length 3J — i lines; expanse of wings 85 — 10 lines. 



Collection. — Ent. Soc. Philad. Two 9 specimens. 



Much smaller than B. lativentris, with the basal incisure of the third 

 abdominal segment distinctly striated. 



Bracon voraginis, n. sp. 



Rufous; head, antennae and legs, black; wings fuscous; abdomen broad, with 

 a deep excavation on each side of the second segment and a smaller one on each 

 side of the third segment; ovipositor longer than the abdomen. 



female. — Rufous, shining; head globose, black, sometimes the sides 

 of the face and the lower part of the cheeks are tinged with rufous; 

 antennae as long as the body, dark fuscous, tinged with rufous at base. 

 Thorax polished; mesothorax distinctly lobed in front, the dorsal lines 

 well impressed; pleura with a puncture and a deeply impressed, oblique 

 furrow beneath the wings; metathorax small, smooth, polished and con- 

 vex above, slightly pubescent, on each side a deep, longitudinal im- 

 pressed line ; tegulae rufous. Wings uniformly dark fuscous, with a 

 large hyaline spot beneath the tip of the first submarginal cell, within 

 which there is a subhyaline streak ; nervures and stigma fuscous Legs 

 black, pubescent ; all the tarsi and base of the posterior coxae tinged 

 with rufous. Abdomen broadly ovate, depressed, shining; first segment 

 excavated on each side, with an acute, longitudinal carina in each ex- 

 cavation ; second segment with a very large, deep, subtriangular exca- 

 vation an each side at base, and an abbreviated carina down the middle 

 of the segment, the apical margin is oblique on each side ; third seg- 



