314 BHACIIELYTRA — OXYTELIDAE. 



S. Antennae much longer than head and thorax ; body 

 not very shiny. 



BLack ; tibiae pitch-brown, tarsi red-brown, sometimes 

 lighter. Elytra rather more than double as long as thorax. 

 L. 2 1. Not uncommon. A. longipcnnis, Fairm. 



Trogoph Joeus, 



A, Anterior angles of thorax strongly spined. 



Black, shiny ; first joint of antennae, thorax, elytra and 

 legs pitchy-red. Antennae shorter and stouter than in 

 T. arcuatus and hilineatus ; head more produced behind 

 eyes ; thorax smaller and sccarcely heart-shaped, with punc- 

 tuation very coarse and lateral depressions less conspicuous 

 and not so complicated ; elytra wider, longer and much 

 more coarsely punctured. A single specimen taken by 

 the Eiver Mersey. T. spinicollis, Rye. 



J3, Anterior angles of thorax not spined. 



a» Length 1 line or more. 



I. Elytra rather strongly punctured. 



1, Antennae black, first joint reddish; palpi pitch- 

 brown. 



Much broader than T. hilineatus. Black ; legs blackish- 

 brown, knees and tarsi yellow-brown. Thorax with two 

 depressions in middle, before each of these a feeble depres- 

 sion, and behind them a slightly curved transverse furrow 

 ending in a depression on each side ; elytra distinctly 

 double as broad as thorax. L. 1^ 1. Not uncommon. 



T. arcuatus, Steph. 



2, Antennae dark red-brown, first and second joints 

 red ; palpi red. 



Pitch-black ; legs (including coxae) reddish-yellow ; 

 elytra often brownish. Thorax with two narrow, slightly 

 curved longitudinal impressions ; elytra nearly half as 

 long again as thorax and about half as broad again- as its 

 base. L. 1^ 1. Common. T. hilineatus, Steph. 



II. Elytra finely punctured. 



1, Head not much narrower than thorax. 



A A. Elytra distinctly half as long again as 

 thorax. 



