MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 241 



fourth equal, one- third shorter than the second; fifth and sixth very 

 short; venter shining, faintly lineated. 



Habitat. — Texas and Florida. 



Types iu National Museum and Coll. Ashmead. 



The specimen in the National Museum is iu the old Belfrage collec- 

 tion, while that in my own collection was captured, by mys<ilf, holding 

 on to the elytron of a short- winged locust, evidently with the intention 

 of finding out where the eggs were to be deposited. The joints of the 

 palpi could not be counted, and I do not feel certain that the insect 

 belongs in this genus. 



SCELIO Latreille. 



Hist. Nat., XIII, p. 226, (1805); Fiirster Hym. Stud., n, p. 102. 



Caloptenobia Riley, First Rep. U. S. Ent. Comm., p. 306. 



(Type S. rugulosus Latr). 



Head transverse, or subquadrate, the vertex broad, the occiput 

 somewhat excavated and rounded; ocelli 3, in a triangle, the lateral 

 being clo.se to the eye; eyes ov.al or ovate. 



AntenufB inserted close to the clypeus, in 5 short, fusiform, sub- 

 compressed, 12-jointed, the 6 terminal joints forming a large club, the 

 funiclar joints moniliform; in 3 10-joiuted, short, subclavate, the joints 

 short, submoniliform. 



Maxillary iialpi very short, inconspicuous, 3-jointed; labial palpi 

 3-jointed. 



Mandibles long, arcuate, bidentate, the teeth subequal. 



Thorax ovoid, the prothorax visible from above only at the dilated 

 sides; mesonotam subcanvex, broad, usually without furrows, rarely 

 with distinct furrows; scutellum semicircular; metathorax short with 

 the hind angles acute. 



Front wings with the submarginal vein remote from the costal edge 

 and terminating in a stigma, with or without a stigmal vein ; sometimes 

 there issues from tlic tip of the stigmal vein another delicate nervure 

 that extends forward and forms a long, narrow, open marginal cell. 



Abdomen sessile, long-ovate, or fusiforju, depressed, the sides acutely 

 margined, in 9 <>, in S 7 jointed. 



The segments after the first, which is short and campanulate, nearly 

 of an equal length, the third usually the longest. 



Legs of moderate length; all femora and anterior tibije clavate, mid- 

 dle and posterior tibite subclavate; the tibial spurs 1, 1, 1, distinct; 

 basal joint of hind tarsi not more than thrice as long as the second ; 

 claws simple. 



The peculiar venation, the short, 3 jointed maxillary palpi, the short, 

 fusiform, subcompressed antenna*, and the male having but 10-jointed 

 antenna) readily distinguish the genus. 



21899— No. 45 16 



