8 ADEPHAGA. [Cavahus. 



fovea on each side beliind antennaj ; thorax transverse, rugose, with 

 central furrow almost obsolete ; elytra oblong-ovate, very convex, finely 

 rugose longitudinally ; underside of body shining black, sides rugose; 

 legs black. L. 22-24 mm. 



A mouutain species. North Wales, Snowdon, Cader Idris. Hills above Langdale, 

 Westmoreland. Scotland, Rannoch, Braemar, Mull, &c. Ireland, near Belfast, Lough 

 Bray. Always a local and scarce insect. 



C. violaceus, L. Elongate ; head black ; thorax varying in 

 size, sometimes distinctly transverse, sometimes as long as broad, with 

 rather 'obsolete central furrow ; disc transversely rugose, black with 

 lateral margins cyaneous or violaceous ; elytra elongate, narrow at 

 shoulders, broader behind, finely rugose or granulate, black with margins 

 bright red, blue, purple, or coppery ; underside and legs black. L. 24 

 mm. 



Common in England and Scotland; apparently local in Ireland; Armagh, Antrim. 

 The insects that have been introduced as C. purpuraseeiis, F., are a variety of this 

 species. 



The var. exasperatus found in the Isle of Portland, New Forest, &c., is very distinct. 

 The granulation of the elytra is much coarser, and they exhibit traces of raised lines 

 more or less distinct. Mr. Mason, of Burton-on-Trent, and Mr. J. J. Walker have 

 lately taken examples of this variety in the old locality. 



C. clathratus, L. Head black with an oblong furrow on each 

 side ; thorax sliort with a plain central furrow, disc brassy black ; 

 elytra wide and convex, greenish or brassy or sometimes blackish, with 

 three ribs on each ; interstices with deep round red or golden im- 

 pressions ; underside and legs black. L. 22-28 mm. 



Said to have occurred in Norfolk in 1809 (Steph.). Scotland local, but rather 

 widely distributed Lowlands and Highlands, Clyde, Argyle, Dee, Sutherland ; 

 abundant in Mull, Hebrides, &c. Ireland, Enniskerry ; Teelin Bay, Donegal ; West- 

 port. 



C. auratus, L. Colour brilliant metallic green with a golden 

 jeflection ; mouth and first four joints of antennte yeUow or reddish 

 yellow ; thorax broad, very transverse ; elytra strongly emarginate just 

 before apex, with three raised ridges on each, interstices almost smooth ; 

 legs red, femora often darker. L. 20-22 mm. 



Very abundant in France, where it does great service in destroying the grubs of the 

 cockchafer. Very doubtfully indigenous in Britain. Examples are often taken in and 

 near the London markets, that have evidently been imported with vegetables, &c. A 

 small colony was found in 1863 by Dr. Power aud Mr. Brewer, between Hythe and 

 Sandgate, under circumstances that seemed to prove them natives, but as Mr. Walton 

 had some years befoi'e turned a batch loose at Dover, in the hope of their establishing 

 themselves, they may have owed their origin to these. Recorded also from Lough 

 Bray in Ireland, but very doubtful, and also from the banks of a tributary of the Clyde, 

 near Glasgow. (Vide Ent. Ann., 1864, 32.) 



C> nitens, L. The smallest but perhaps the handsomest of the 

 British Carabi ; head and thorax as a rule brilliant copper^^-red, some- 

 times greenish; elytra shining metallic green with Ijright coppery 



