332 PROCEEDINGS OF THE NATIONAL MVSEUM. vol.52. 



notum and along the lower front margin where it is very closely and 

 finely punctate and hairy; the surface very faintly almost vertically 

 rugose below the lateral pits, these pits large, with an inner and an 

 outer ridge on the caudal side; proepisterna more closely punctured 

 and with larger hairs, the lower end above the coxal insertions on each 

 side with a poorly defined transverse blackish band; parapsidal fur- 

 rows fairly well defined, not punctured, apparently nearly obsolete 

 behind, median lobe grooved, lateral lobes flattened in the middle; 

 hind angles of the mesoscutum not prominently produced; fossa 

 between mesonotum and scutellum with a median and one or two 

 lateral ridges on each side; scutellum elongate, triangular, apex 

 almost truncate ; mesopleurae shining, sparsely punctured and hairy, 

 with a well-defined but not deep crenulate fossa running forward from 

 the insertions of the meso-coxae and curving strongly upward near 

 the end ; propodeum rounded in profile with three well-defined longi- 

 tudinal ridges on each side, the median pair parallel for part of their 

 length, uniting to form an oval in front, and in the shape of an elongate 

 truncate triangle behind, the second ridge irregular and incomplete, 

 the third nearly straight; spiracles short, oval. 



Wings. — Fuliginous; length, fore wing 7 mm.; hind wing, 5.5 mm.; 

 venation typical, with a large hyaline spot below the base of the 

 stigma and another large irregular transverse mark just beyond the 

 branching of the discoidial and the first recurrent nervure. 



ie^s.— Honey-yellow except all the tarsal claws, the apices of the 

 hind tibiae and the hind tarsi; fore and middle tarsal claws cleft, hind 

 claws missing, hind tibiae with an apical cluster of about 17 short, 

 stout spines, middle tibiae with 2 stout spines. 



Abdomen. — Elongate, slender, sides almost parallel, 4 mm. long, 

 shining yellow with blackish infusion near the caudal end of the dor- 

 sum of third segment and some along the under sides of the same seg- 

 ment; dorsum of segments two and three very long, much longer than 

 first segment; ovipositor brownish-yellow, sheath blackish, 4 mm. 

 long. 



Male. — Not known. 



Described from one specimen labeled "Sou. Cal. Am. Ent. Soc. 

 CoU.y" but now in the United States National Museum collection. 



Type.— Cat. No. 20481 U.S.N.M. 



BRACON NIGROSTERNUM, new species. 



Malar space longer than height of eyes; reddish yellow; tegulae 

 and venter of female black; length, 7-8 mm. 



Female. — Head. — Elongate, triangular, longer than wide; height, 

 62-57; width, 58-54; height of eye, 28.5-25; malar space, 30-27; 

 width between eyes, 31-31; width at base, 18-17.5; profile of face 

 sUghtly curved to a little below the antennae, then with a very faint 



