THE CANADIAN ENTOMOLOGIST. 155 



Clypeus anteriorly semicircularly produced, covering the 

 mandibles ; pronotum always long, at least as long as the 



mesonotum Subfamily IV., Planicepinse (pars). 



Front wings with three cubital cells. 



Head antero-posteriorly not especially thin, the face and clypeus at 

 least subconvexj never flat ; the antennas inserted 07i or near the 

 middle of the face, always considerably above an imaginary line 

 drawn from bases of eyes, (Males only). Subfamily II., Ageniinae. 

 Head antero-posteriorly very thin, the face and clypeus very flat, the 

 antennse inserted towards the anterior margin of the head on or 

 or just above an imaginary line drawn from bases of eyes 



( 5 and $) .Subfamily IV., Planicepinas (pars). 



Pronotum as long or longer than the mesonotum ; front coxie long, 

 usually longer than the hind coxfe, the front femora in $ often much 



swollen or greatly incrassated Subfamily IV., Planicepinse. 



Pronotum very long ; metanotum as long or longer than the meso- 

 notum ; eyes entire, not at all emarginate within ; antennae in 5 > 

 after death, involute at tips ; cubitus in hind wings interstitial or 

 originating before the transverse median nervure ; hind tibiae 

 not or rarely longer than their femora, usually 



shorter Subfamily V., Notocyphinse. 



Pronotum not long, shorter than the mesonotum ; metanotum short, 

 much shorter than the mesonotum and obliquely truncate posteriorly ; 

 eyes subemarginate within ; antennae in ^ , after death, straight, not 

 involute ; cubitus in hind wings originating beyond the trans- 

 verse median nervure ; hind tibije much longer than their 

 femora Subfamily VI., Ceropalinse. 



THE LARVA OF EUSTIXIA PUPULA, HUBN. 



BY HARRISON G. DYAR, WASHINGTON, D. C. 



The larva of this not uncommon little Pyralid feeds on the seeds 

 of the peppergrass. It has not been described heretofore ; the name 

 as given by Packard (American Naturalist, IV., 229) is an error of 

 identification, the species which he represents, copied from Abbot's 

 manuscript drawing, being Enccmia crassi7iervella, Zell., a Tineid. The 

 true larva of E. pnptila lives singly in the heads of the peppergrass in a 

 loose open web, eating the unripe seeds out of the flat pods, forming two 

 holes in each pod on the upper side. The larvie, though fully exposed, 



