370 CLAVICORXIA — TRICHOPTERYGIDAE. 



yellow. Head large, somewhat prominent ; thorax rather 

 sliort, hroadest near base, tubercles large, in curved rows, 

 sides rather broadly bordered ; elytra as long as head and 

 thorax, sides straight. L. -^ 1. Eare. T. brevis, Mots. 



Ji h. Eyes not prominent ; apices of elytra 

 rounded. 



Eather short and l)road, somewhat flat. Black, dull, 

 with long brown hairs ; legs dusky yellow ; under-side 

 pitch-black, with mouth, coxae, metasternuin and margins 

 of abdominal segments dusky yellow. Head large, some- 

 wliat prominent ; thorax broadest near base, tubercles 

 rather large, in interrupted rows, sides feebly bordered ; 

 elytra scarcely longer than head and thorax, sides nearly 

 straight. L. ^jj- — -^ 1. Common. T. sericans, Heer. 



b b. Body elongate ; posterior margins of 

 thorax nearly straight; elytra dark chestnut- 

 brown. 



01)long, elongate, strongly convex. Legs short, yellow ; 

 under-side pitch-black, with mouth and coxae lighter. 

 Head large, rather prominent, eyes scarcely prominent ; 

 thorax broadest behind middle, not narrowed at base, 

 tubercles rather large, in interrupted rows, sides feebly 

 l)ordered; elytra as long as head and thorax, sides very 

 slightly rounded, apices strongly rounded. L. -^ — ^ 1. 

 Eare. 2\ ohscaena, Woll. 



2? Ji. Elytra feebly asperate. 



a a. Body oblong. 



A a. Pubescence very short; length y^-g — j%- 

 line. 



Elongate, rather narrow, convex. Black ; legs dusky 

 yellow ; under-side bhick, with mouth and coxae pitchy. 

 Head rather small, long, eyes prominent; thorax short, 

 broadest behind middle, not narrowed at base, tubercles 

 small, in curved rows, sides feebly bordered, basal margin 

 nearly straight; elytra as long as head and thorax, sides 

 nearly straight until near apex, thence slightly rounded, 

 apices feebly rounded. Scarce. T. long u I a, Mat 



Ji b. Pubescence long ; length -^^ — j% line. 



Short, moderately convex. Black ; legs yellow ; under- 

 side pitch-black, with mouth, metasternum and coxae 



