Dr. Gwyn Jeffreys on some British Shells. 377 



Hoplistocerus eximms. 



H. glaber, capite prothoraceque nitide viridi-aureis ; elytris laete 

 viridibus, baud nitidis, sutura violacea ; abdomine femoribusque, 

 anticis exceptis, nitide luteis. Long. 4 lin. 



Hah. Bahia. 



Smooth and glossy, except the elytra ; head and prothorax 

 rich greenish gold, the latter and the vertex transversely 

 striate ; antennae and legs, except the posterior and inter- 

 mediate femora, glossy violet-black ; scutellum transverse, 

 green ; elytra pure dark green, uniformly punctured, the 

 suture violet ; sterna golden green ; abdomen and femora, 

 except the anterior, glossy reddish yellow. 



In coloration very distinct, according to descriptions, from 

 H. gloriosusj Bates, and H. refulgens^ Blanch. 



Hydraschema virgatum. 



H. elongatum, sublineare, fuscum, pube albida, in vittis condensafa, 

 vestitum ; antennariim articulo quarto caeteris longiore, prime 

 excepto, sequentibus gradatim brevioribus. Long. 6^ lin. 



Hah. Brazil. 



Sublinear, elongate, dark brown, covered with a whitish 

 pile, which is condensed on the centre and sides of the pro- 

 thorax into very determinate stripes ; on the elytra, along the 

 suture the pile forms an evident stripe, spreading out towards 

 the apex, and sending off a branch which passes obliquely to 

 the shoulders, each elytron tapering away to a sharp point ; 

 hind legs scarcely extending to the last abdominal segment ; 

 antennee nearly black. 



Hydraschema fab ulosum J as M. Thomson has described it, 

 differs, inter alia, in having all the joints of the antenna3, the 

 second excepted, of equal length, and in having certain yellow 

 spots, &c. 



XLI. — Notes on some British Land and Freshioater Shells. 

 By ,j. Gwyn Jeffreys, LL.D., F.R.S. 



My attention has of late been almost exclusively directed to 

 marine conchology ; but a correspondence which I have now 

 had with Dr. Baudon of Mouy and Dr. Westerlund of E.on- 

 neby induces me to offer a few observations on two or three 

 species of British land and freshwater shells. 



Dr. Baudon has most kindly sent me specimens of most o' 



