386 CLAVICORNIA — ANISOTOMIDAE. 



Brownish-yellow ; disc of thorax and base of elytra 

 darker. Antennae with first two joints of club blackish. 

 Thorax diffusely and very finely punctured ; elytra im- 

 punctate, sutural stria reaching middle. Left mandible of 

 male sometimes produced. L. 1 1. Eather common. 



A. varians, Beck. 

 h» Anterior tarsi of female with five joints, hinder pairs 

 with four joints. 



J. Sutural stria on elytra reaching beyond middle ; 

 club of antennae black (except sometimes apex.) 



Black ; margins of thorax, apex of elytra, antennae 

 (except club) and legs red-brown, femora darker. Thorax 

 and elytra finely punctured. Left mandible of male either 

 with a straight, pointed, thornlike horn, reclining on head 

 or merely a little thickened and curved. L. | — 1 1. Mode- 

 rately common. A. rotundatum, Gyll. 



II, Sutural stria on elytra not reaching middle ; 

 antennae unicolorous red. 



Black, shiny ; margins of thorax pitchy ; antennae and 

 legs red. Punctuation of head even, of disc of thorax 

 indistinct, of its sides and the elytra diffuse and fine. L. 

 I — |- 1. Eare. • A. convexum, Sharp. 



O. Base of elytra tolerably straight, humeral angles almost 

 right angles. 



Almost without any al)ility to roll up into a ball. 

 a. Elytra witliout sutural stria. 



Pitch-black, margins of thorax and apex of elytra 

 lighter ; antennae and legs brown-red, apex of former and 

 posterior femora darker. Punctuation of thorax scarcely 

 perceptilile, of elytra distinct and rather close. Female 

 with four joints to all tarsi. L. | 1. Not connnon. 



A. inarginatum, Stm'm. 



&.. Elytra with a sutural stria. 



I, Head very closely punctured. 



Pitch-black, margins of thorax often lighter ; abdomen, 

 antennae (exce])t base of club) and legs red-brown. Fore- 

 head with a slight transverse impression behind ; temples 

 prominent behind eyes ; punctuation of thorax indistinct, 

 of elytra distinct. Female with five joints to anterior tarsi. 



