LAMELLARTA. 359 



the sjjecies described and figured by Montagu, and that 

 which we have represented in our plate, from a drawing of 

 a specimen taken at Swansea, kindly communicated by Mr. 

 Spence Bate. Loven describes the animal as having a 

 depressed subverrucose mantle, of a fulvous hue, painted 

 with rufous, contrasting these characters with the convex 

 thick tuberculous mantle of a cineraceous hue, striolated 

 with black, and spotted with fulvous, which he assigned to 

 the perspicua. We are inclined to think that little stress 

 can be laid on colour alone in this genus. 



An examination of specimens of Mr. Bate's shell, and of 

 other drawings of his animal, confirm us in this opinion, and 

 we cannot see any essential difference between the former 

 and examples of L. tentaculata in Mr. Jeffreys"' collection, 

 from Devon, procured by Mr. Clark, and regarded by him 

 as such. Whether a still more depressed form, marked by 

 Mr. Jeffreys as " Marsenia complanata of Leach," be 

 distinct, is yet to be seen. 



Mr, Bate observes, " I think they cast their outer shells 

 like toads ; my reasons for supposing so is based on the 

 following circumstance. After the animals had been kept 

 a few days, the epidermis around the siphon began to 

 separate, and continued to do so, until I removed it with 

 my fingers. The colours beneath were bright and beau- 

 tiful." 



It seems to have a wide range. Falmouth (Cocks) ; 

 Swansea (Jeffreys and Spence Bate); Weymouth (Barlee); 

 Scarborough (Bean) ; among rocks at low- water, Cullercoats 

 (Alder) ; Arran, in Ireland (Barlee). 



