6 Journal of Entomology and Zoologj' 



rudimentary spiracle, the remaining two in a transverse row on 

 the posterior ring near the caudal margin ; on the eighth pleurite 

 there is a single bristle. On the sternites, no bristles. Terebra 

 of the ovipositor ending almost on a common level, the tergal valves 

 a very little longer; each tergal valve terminates in four rather 

 weak bristles. In the male pupae, the sternal valves are slightly 

 more tumid and project beyond the level of the tergal valves. 



Nepionotype. Urbana, Illinois. September 19, 1920. 

 Neanotype. Urbana, Illinois, September 29, 1920. 

 Paratypes, larvae and pupae, September 5, 19, 29, 1920. 



Fig 

 Fig 

 Fig. 

 Fig. 

 Fig, 

 Fig, 

 Fig, 

 Fig. 



EXPLANATION OF PLATE 



Head capsule of larva, ventral aspect. 



Mandible 



Apex of mental bai'. 



Antenna of larva. 



Spiracular disk of larva, dorsal a.spcct. 



Spiracular disk of larva, lateral aspect. 



Pupa, lateral aspect. 



Head of pupa, ventral aspect. 



Ant.= Antenna; Lb. = Labium; M.\. = Maxilla; P.= Maxillary sheaths 



