380 PHYTOPHAOA. [Crepidodem. 



I. I ' j>|>er surface, at all events of thorax, not metallic, last 



joint <>f maxillary palpi short and thick, 

 i. Upper and under surface ferruginous-testaceous. 



1. Rows of punctures on. elytra in irregular rows, 



which are double in the female ; size larger . . . C. TBANSVERSA, Marsh. 



2. Rows of punctures on elytra in regular single 



rows ; size smaller C. FKKUUOINBA, Scop. 



ii. Under-side, in part at least, black. 



1. Thorax red ; elytra black or bronze- black ; frontal 



tubercles very distinct (s.g. Derocrepis, Weise) . C. BUFIPE8, L. 



2. Upper surface light testaceous ; frontal tubercles 



indistinct C. VKNTBALI8, III. 



II. Upper surface strongly and brightly metallic ; last 

 joint of maxillary palpi slender, longer thau the 



penultimate (s.g. Chalcoides, Foudr.). 

 i. Interstices of elytra somewhat strongly punctured in 



more or less distinct rows C. NITiDUtA, L. 



ii. Interstices of elytra very finely punctured or slightly 

 rugose. 



1. Thorax with the interstices almost smooth or very 



finely punctured. 



A. Antenna; entirely reddish-testaceous, or slightly 



fuscous towards apex ; size larger C. HELXINES, L. 



B. Antenna; bluck with base reddish -testaceous; 



size smaller. 



a. Antennae with the first four joints sharply 

 reddish-testaceous and the remainder black ; 

 thorax and elytra usually concolorous ; ely- 

 tra subparallel C. CHLOEis, Foudr. 



b. Antennae with the first five joints, and some- 

 times part of the sixth reddish, testaceous ; 

 thorax usually bright red and elytra green ; 



sides of elytra somewhat rounded .... C. AUBATA, Marsh. 



2. Thorax with the interstices rugose ; colour 



brilliant golden green, unicolorous C. SMAKAGUINA, Foudr. 



C. transverse, Marsh, (impressa, Duft., nee F. ; exoleta, 01., nee F. ; 

 ferruyinea, 111., nee Scop.). The largest of our species ; oblong-ovate, 

 convex, entirely ferruginous testaceous, except the eyes which are black ; 

 head extremely finely punctured, antennae sometimes a little darker 

 toAvards apex ; thorax more or less transverse, broadest before middle, 

 narrowed behind, diffusely and finely punctured, with a strong trans- 

 verse furrow at base, bounded by a distinct longitudinal fold on each 

 side ; elytra with irregular rows of moderately strong punctures, inter- 

 stices very finely punctured ; posterior femora sometimes a little darkened 

 in middle. L. 4-5 mm. 



Male with the thorax scarcely transverse, and the rows of punctures 

 on elytra almost simple ; the last ventral segment of the abdomen, also, 

 is deeply impressed transversely at apex. 



Female with the rows of punctures on elytra double. 



On thistles, rushes, and dry grass 5 usually in damp places; somewhat local, but, 

 as a rule, common and generally distributed throughout the kingdom. 



C. ferrug-inea, Scop., nee 111. (ejjolcta, F., nee 01.). Very clusuly 



