174 



HYMENOPTERA. 



rig. 99. 



Fig. 101. 



wing) contains a few specie's, of which P. nitjer Cresson. an 

 entirely black species, is found in Connecticut. Aporus (Fig. 



103, wing) contains a single American 

 species, ^1. fasciatus Smith, taken in 

 North Carolina. 



From Mr. F. (J. Sanborn we have re- 

 ceived the larva and cocoon of P<npilux 

 Flg - 9 ~- fit a ere us St. Farg., a small black spe- 



cies, which builds its nest in fields. The larva is short and 

 broad, with the lateral region rather prominent, and the tip of 

 the abdomen rather acute. It differs 

 from Pelopaeus in its stouter, rather flat- 

 tened body, and thickened segments, 

 though as our specimen is preserved in 

 alcohol these characters may have be- 

 come exaggerated. It more nearly re- 

 sembles Pelopaeus in its transverse 

 clypeus, thin bilobate labrum, and the 

 stout mandibles, which are, however, 

 much stouter than in Pelopjeus, while 

 the whole head is shorter, broader, and 

 rounder. It is probable that this pecu- 

 liar form of the head (which as in Sphex 

 is bent beneath the breast), together Fig. 10:;. 



with the broad transverse clypeus. and broad, short, bilobate, 

 thin, transparent labrum, and especially the nnidentate short 



broad mandibles are family characters, sep- 

 arating the larva? of this group from those of 

 the Sphegidce . The cocoon is ovate, long, 

 and slender, much smaller at one end than 

 the other, not being so regularly fusiform 

 as in Sphex. 



CeropaZes differs from the foregoing gen- 

 era in its broad head, its much shorter ab- 

 domen ; and also in the eyes being a little excavated, in the 

 depressed labiutn. the narrow front, which dilates above and 

 below the middle, and in the greatly elongated hind legs, gen- 

 erally banded with red or whitish, ('empales hipinictata Say 

 is generally distributed throughout the United States. It 



Fig. 10-2. 



Fig. its. 



