494 CLAVICOKNIA — LATHRIDIIDAE. 



elytra with deeply punctured striae, alternate interstices 

 raised, apex rounded. L. f 1. Common. 



L. ruficollis, Marsh. 

 IT, Thorax mucli broader than long. 



1. Body black. 



Black; mouth, antennae and legs reddish-yellow. Tliorax 

 with a short, feeble longitudinal impression in middle of 

 disc, sides evenly rounded, with narrow raised border, dis- 

 tinctly narrowed toward apex, posterior angles almost right 

 angles ; elytra somewhat dilated toward middle, only a 

 little broader in front than base of thorax, with fine punc- 

 tured striae ; prosternum with a ridge between anterior 

 coxae. L. | — 1 1. Eare. L. rugosus, Herbst. 



2. Body red-brown. 



A A, Striae on elytra rather deep. 



Eed-brown. Thorax flat, more than half as broad again 

 as long, sides somewhat rounded, slightly narrowed in front, 

 with traces of a longitudinal furrow on middle of disc, 

 transversely impressed at base, closely punctured in wrinkles; 

 elytra half as broad again in front as base of thorax, some- 

 wliat dilated in middle, with rather deep punctured striae, 

 interstices impunctate ; prosternum with a ridge between 

 anterior coxae. L. f 1. Common. L. transversus, 01. 



li IB. Striae on elytra feeble. 



Short, somewhat convex. Eed-brown, slightly shiny. 

 Thorax twice as broad as long, bisinuate in front, disc 

 slightly convex, with an indistinct central furrow and a 

 deep transverse basal impression ; elytra much broader at 

 base than thorax, with indistinctly punctured striae ; pro- 

 sternum with a ridge between anterior coxae. L. | 1. 

 Scarce. L. testaceus, Steph. 



Ill, Thorax nearly as long as broad. 



1, Thorax with a central furrow (or two depres- 

 sions in its place) ; elytra much broader than base 

 of thorax. 



A A. Anterior angles of thorax much rounded 

 and dilated. 



Black or black-brown, dull ; antennae and legs reddish- 

 yellow-brown. Thorax heart-sliaped, with two oblong de- 

 pressions in middle, transversely impressed at base, with a 



