288 PHYTOPHAGA. [ Cryptocephalus. 
the supposed larva of C. sericeus is figured by Westwood (Classification, 
i, p. 388, 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 asa type 
species, and then arranges the allied species near it; as regards the 
punctuation of the elytra, whichis 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; antennz lighter at 
base. 
1. Thorax and femora entirely black or blue- 
black =<. cae tee eee ee eee  aCePRIMARIUA, Har: 
(imperialis, F., nec Laich.) 
2. Thorax more or less yellow; femora with a 
yellow spot at apex . C. SEXPUNCTATUS, L. 
ii, Upper surface metallic, golden green, coppery, 
or purplish ; antennze entirely dark. 
1. Average size larger ; antennz longer; pygi- 
dium'not/carinmate’. © 9.) - . 2 = 2). . (CC) AvREoLUS, Suffi- 
2. Averagesize smaller; antennze shorter ; s Pysi 
dium feebly carinate . . C. HYPOCHERIDIS, L. 
IL. Elytra with rows of punctures, which are more 
or less irregular or confused. 
i. Upper surface metallic, bluish-green or blue . C. ocHROSToMA, Har. 
(nitidulus, Gyll.) 
. Upper surface not metallic. 
a Thorax black in male, red in female, elytra 
red, or red with black shoulders . . C. cory, L. 
2. Thorax black; elytra yellow with a “broad 
longitudinal black band oneach . . . . . C. BIPUNCTATUS, L. 
(v. lineola, F.) 
3. Thorax black ; ay black with the pies 
rufo-testaceous. . . C. BIGUTTATUS, Scop. 
(bipustulatus, F.) 
III. Elytra with regular and distinct rows of punc- 
tures. 
i. Upper surface metallic, the elytra at least being 
cyaneous. 
1. Anterior pairs of legs reddish-yellow . . . C. PuNCTIGER, Payk. 
2. Legs cyaneous, unicolorous with body. . . C. parvoutus, Miill. 
(fulecratus, Germ.) 
i. Upper surface not metullic. 
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, DECEMMAOULATUS, L. 
(decempunctatus, L.) 
