288 PHYTOPHAGA. [Cryptoceplialut. 



the supposed larva of C. sericeus is figured by Wcstwood (Classification, 

 up. 383, fig. 47, 12, 14). 



About one hundred and forty species of the genus are found in 

 Europe, of which eighteen, or, as some authors reckon, nineteen, occur 

 in Britain ; these may be divided as follows, but the classification must 

 be regarded as purely artificial, and merely as an aid to identification; 

 Weise, in his work, does not attempt to give a detailed classification, 

 but refers the several groups to some well-known species as a type 

 species, and then arranges the allied species near it ; as regards the 

 punctuation of the elytra, which is a very useful character, C. coryli and 

 C. lineola are intermediate between the species with confused and 

 regularly punctured elytra ; they are, however, exceedingly distinct 

 species, so that no difficulty can well arise regarding them. 



I. Elytra closely and confusedly punctured. 



i. Upper surface not metallic ; antennae lighter at 

 base. 



1. Thorax and femora entirely black or blue- 

 black C. PBIMARHTS, Bar. 



(imperialis, F., nee Laicli.) 



2. Thorax more or less yellow ; femor.i with a 



yellow spot at apex C. SHXPUNCTATUS, L. 



ii. Upper surface metallic, golden green, coppery, 

 or purplish ; antennae entirely dark. 



1. Average size larger; antennae longer; pygi- 



diuin not carinate C. ATTKEOLUS, Suffr. 



2. Average size smaller; antennae shorter; pygi- 



dium feebly carinate C. HYPOCH.EBIDIS, L. 



II. Elytra with rows of punctures, which are more 



or less irregular or confused, 

 i. Upper surface metallic, bluish-green or blue . C. ocnROsroMA, J7ar. 



(nitidulu, Gyll.) 

 ii. Upper surface not metallic. 



1. Thorax black in male, red in female, elytra 



red, or red with black shouldeis C. COBYll, L. 



2. Thorax black; elytra yellow with a broad 



longitudinal black band on each C. BIPUKCTATTTS, L. 



(v. lineola, F.) 



3. Thorax black ; elytra black with the apex 



rufo-testaceous C. BIOTTTTATUS, Scop. 



(bipustulatus, F.) 



III. Elytra with regular and distinct rows of punc- 

 tures. 



5. Upper surface metallic, the elytra at least being 

 cyaneous. 



1. Anterior pairs of legs reddish-yellow . . . C. PUNCTIGER, Pat/fc. 



2. Legs cyaneous, unicolorous with body . . . C. PABVULUS, Mull. 



(fulcratus, Germ.) 

 ii. Upper surface not metallic. 



1. Thorax black with yellow markings. 

 A. Thorax very diffusely, but comparatively 

 strongly, punctured ; size moderate ; elytra 

 yellow, with variable black markings, or 



entirely black C. DBCRMMACULATPB, L. 



(dteempunctatut, L.) 



