76 Proceedings of the 



C. sericea— fuscus, Panz., Erich.* 



C. tristis-\— ? 



C. festinans'l= ? (possibly grandicollis, Erich.). 



b. Thorax with the basal margin straight near the angles. 

 C. chrysomeloides = chrysomeloides, Panz v Lat., Sturm. 

 C. Leachii§ = tristis, Erich. 

 C. Kirbii\\=rotundicollis, Kellner. 



C. Marskami^H = ? (either morio, Erich, or nigrita, Erich.) 



C. dissimulator** =• ? (probably morio, Erich.) 



* Erichson, and after him Kraatz, give C. picipes, Fab., as the synonym 

 of Spence's sericea, but I think this is a mistake. The description better 

 accords with fuscus, and I believe that picipes has not yet been found in 

 Britain. I recorded it in my ' Catalogue of Scottish Coleoptera ' as found 

 by myself in Scotland, but I am now satisfied that the specimen on which 

 I relied was only a large variety of nigricans. If Erichson formed his opi- 

 nion of the synonymy from not finding any other probable representative 

 of picipes among Spence's species, the circumstance of its not being British 

 explains how this may be. If he judged from Spence's description, he 

 ma}'' have been misled by the commencing words used by Spenee, " Body 

 broader and more convex than in its congeners/' which he might apply to 

 picipes, which is the largest species in the genus ; and by Spence's next 

 words, " shorter than the preceding," viz. nigricans, he might have sup- 

 posed him to mean less elongate in form, which picipes is, although cer- 

 tainly not actually shorter — it being longer. The only other resemblance to 

 picipes is the black elytra ; but PaykulPs description of his C. sericeus, to 

 which Spenee refers as in all other respects identical with his, corrects this 

 incongruity, for Paykull states the elytra of his species to be obscure tes- 

 taceous. In Stephens's collection sericea is represented by a pale variety 

 of chrysomeloides. 



f No species has puzzled British entomologists more to identify than 

 this. The prominence given by Spenee and Stephens to the clavate form 

 of the antennse, and Spenee describing it as bearing a elose general resem- 

 blance to chrysomeloides, has had the effect of making most of them 

 attempt to find a representative for it out of narrow-clubbed and small 

 varieties of chrysomeloides — and accordingly it is generally so represented 

 in British collections — an error which I have seen continental entomo- 

 logists fall into in like manner. I cannot ascertain to my own satisfaction 

 what the species was which Spenee had in view in describing this. Mr. 

 Waterhouse had adopted the usual British view, hut Stephens has his 

 tristis wholly represented by fuscus, Erich s. 



X This species is stated by Erichson and Kraatz to be a synonym of 

 fuscus, but from what I have already said in the note upon sericea, it ap- 

 pears to me that that synonym is preoccupied. Mr. Waterhouse has not 

 this name represented in his collection. In Stephens's it is represented by 

 two specimens of tristis and one of grandicollis. Little can be made out 

 from Spence's description. 



§ Represented wholly by tristis in Mr. Waterhouse's collection, and in 

 Stephens's collection by two specimens of tristis and two of grandicollis. 



|| Represented by rotundicollis both in Waterhouse's and Stephens's col- 

 lections. 



If Mr. Waterhouse has this represented by morio ; in Stephens's col- 

 lection it is represented wholly by chrysomeloides. 



** Given as a synonym of morio by Erichson. Represented by tristis 



