224 EDWARD NORTON. 



53. P(ECILOSTOMA, Dablb. 

 Pcecilostonia, Dahlbom. 



Hartig, die Blattw. 302, Sec. 3. 



Wings as ia Tenthredo, two marginal and four submarginal cells, 

 the second and third each with a recurrent nervure. Lanceolate cell 

 open at shoulder, with oblique cross-line; under wings with one inner 

 cell. 



Antennse 9-articulate, not longer than base of abdomen, generally fil- 

 iform. 



Head somewhat rounded as in the previous Section ; body generally 

 cylindrical, abdomen compressed, somewhat broader at the fifth or sixth 

 segment; nasus slightly emai-ginate; labrura rounded; labium as in 

 Tenthredo, the first joint of maxillary palpi almost wanting; mandi- 

 bles thick, below the tip with a sharp tooth. 



1. Poecilostoma inferentia, n. sp. 



Black, edges of ventral segments whitish ; wings hyaline. Length 0.28. Br. 

 ■wings 0.48 inch. 



■J . — Black ; body long, antennae short, not longer than to scutel, 

 flattened, third joint longest; nasus moderately notched, a tooth in 

 notch on each side, making it appear 3-notched ; mandibles stout, with 

 a large tooth near the point ; labrum, tegulae, edge of collar, edges at 

 sides of each segment of abdomen, white ; abdomen flattened, not stout ; 

 legs black, tinged with piceous; trochanters, base and tips of femora, 

 whitish; all the legs before obscure white; spurs very short, inner 

 claw tooth near the middle of claws ; wings clouded hyaline, stigma 

 piceous. 



Farmington, Ct. OneS . 



It is possible that Strong ijlogaster rufocinctus belongs to this Section, 

 as its wings would lead to infer, but the general structure of the an- 

 tennae and head is more like that of the species with which it is placed. 



54. PERINEURA, Hartig.- 

 Ferineura, Hartig, Die Blattw. 1860, 303, See. 4. 



Wings with two marginal, and four submarginal cells, the second and 

 third each with a recurrent nervure. Lanceolate cell closed in middle; 

 under wings without middle cell, all the outer cells closed by outer cross 

 nerves near the margin of wing. 



Upper lip deeply emarginate, with prominent side angles; labrum 

 large. 



Remainder as in Tenthredo. 



Europe. 



