Carahus.] adephaga. 7 



ii. Interstices without impressions. 



1. Interstices very finely wrinkled, almost smooth ; 



legs red C. AUEATUS, L. 



2. Interstices more coarsely wrinkled ; legs black . . C. nitens, L. 

 III. Elytra with three rows of oblong raised granules 



separated from each other by a single plain ridge, or by 



rows of three more or less raised lines. 



i. Ridges single and plain C. GEANCLatUS, L. 



ii. Kidges replaced by three plainly raised lines which 



may be traced almost to apex C. MONILIS, F. 



iii. Ridges replaced by three rather obsolete raised lines 



which are confused and evanescent towards apex . . C. aetensis, F, 



C. intricatus, L. Blue or violet-blue ; head large, forehead 

 rugose ; tliorax long, sinuate before base, transversely rugose, with a 

 deep central furrow ; elytra long, sides dilated behind middle, strongly 

 sinuate before apex; legs black, long and slender. L. 24-28 mm. 



In woods under moss and lichens on trunks of old oaks and other trees, or under 

 bark. Apparently confined to the south-west district bordering on Dartmoor in 

 Devonshire ; Tavistock, Holdsvvorthy, Ashburton, Bickleigh Vale. About 60 or 70 

 specimens were taken in this district by Mr. Reading, of Plymouth, some years ago. 

 One specimen, probably accidental, has occurred in a stable at Croydon. 



C. catenulatus, Scop. Black, margins of thorax and elytra 

 bluish or reddish-violet ; head obsoletely punctured and strigose ; 

 thorax with lateral margins broad and strongly elevated throughout, 

 dorsal line very shallow ; elytra rugose with sixteen or seventeen 

 elevated interrupted lines on each ; underside of body and legs black. 

 L. 20-24 lines. 



Common and widely distributed in England and Scotland, both in lowland and 

 mountainous districts. Local in Ireland, near Belfast and Dublin. 



C. nemoralis, Midi, {hortensis, Panz.). Head black, much 

 narrower than thorax ; antennae fuscous with base black ; thorax 

 bronze or purplish black with lighter metallic margins ; elytra rather 

 broad, oblong ovate, brassy, coppery, or green, with three series of large 

 metallic }>unctures, the rest of the body rugose ; underside and legs black. 

 L. 20-24 mm. 



Common and widely distributed in England and Ireland. Abundant in Scotland, 

 Lowlands only. 



C. convexus, F. Somewhat like C. glahratus, but much smaller, 

 deep black witli the margins of thorax and elytra more or less cyaneous ; 

 head with a deep inipr(;ssion oil each side ; thorax nearly (quadrate, 

 plainly but rather shallowly rugose witli fine central furrow ; elytra 

 short, ovate, closely and regularly striated, witli narrow elevated inter- 

 stices ; underside black. L. 14-lG mm. 



Very doubtful as British. Mr. IMatthews has a specimeti said to have been taken by 

 Holme in Winstanley Park, Lancashire, in -Sept. 1836, but its authenticity appears 

 very doubtful. Tiiere is, however, no specimen existing that is more authentic, and 

 the be.st plan would be to strike the species provisionally off the British list. 



C. grlabratus, I'ayk. Entirely black, smooth ; head with a 



