f 



340 Mr. Alder's Supplement to his Catalogue 



Jeffreys in the Linnean Transactions. The Baron de Ferussac not having published 

 either figure or description of this species, his synonym must fall to the ground. 

 V. alpestris, Fer. 



Shell cylindrical, pale horn-coloured, transparent, striolate ; with 5 whorls a little rounded ; 

 aperture semi-circular; outer lip slightly bent and reflected; teeth four, situated as in V. 

 pygmaa. Length, l-10th of an inch ; breath, one half less. 



Differs from "V '. pygmcea in being more cylindrical, and slightly striated. 

 On an old wall at Lipwood, near Haydon Bridge. Two specimens were presented to me 

 by Mr. John Thompson, of Crowhall Mill, to whom I am indebted for some other rare shells 

 found in that neighbourhood. Mr. Gilbertson, of Preston, has the merit of first distin- 

 guishing this species as British, having found it at Clithero, in Lancashire. The Baron de 

 Ferussac's specimens were from the Alps. I am not aware that it has been previously pub- 

 lished. 



HELIX. 

 H. radiatula, (vol. i. p. 38.) 



Var. a. greenish white and crystalline. 

 H. Vitrina, Fer. Tab. des Moll. 

 In Gibside wood. 



Of this rather scarce variety, M. de Ferussac had two specimens in his cabinet, named 

 as above. 



H. granulata. (vol. i. p. 39.) 



Animal, pale yellowish white ; head and tentacula grey ; cloak beautifully speckled with 

 black, the black blotches being larger towards the upper extremity and giving the higher 

 whorls of the shell a marbled appearance when alive. 



Mr. Jeffreys has changed the above name to H. globularis, and states as a reason that 

 granulata expresses an imperfect appearance of the shell. It must be recollected, however, 

 that the granulations are always present at the base of the hairs, though most distinctly 

 seen when the latter are worn off. Dr. Turton, with whom the above name originated, 

 subsequently adopted the idea that this species was the H.sericea of Draparnaud, which 

 is not the case. It is strange that even in Paris the H. sericea of Drap. is unknown. 

 The species that M. de Ferussac calls by that name and considers to be the H. sericea of 

 Muller is described below. 

 H.sericea, Mull., Fer. 

 Animal, greyish, marbled with black. 



Shell, rather globular, thin, transparent, reddish horn-coloured, nearly smooth or slightly 

 wrinkled ; with six whorls, thickly set with soft recurved hairs ; outer lip thin, without 

 rib ; umbilicus small. Diameter, 3-10th of an inch ; height, 2-10ths. 

 In Cawsey Dean, Tanfield ; and in the Bath Wood, Dinsdale. 



The shell is thinner, more globular, and with the umbilicus smaller than H. hispida ; of a 

 darker colour and with the apex more depressed than H. granulata . 

 H. concinna, Jeff. 



The extreme difficulty of obtaining any good distinguishing characters in the hispid spe- 

 cies makes me introduce this with great hesitation, especially as Mr. Jeffreys himself now 

 considers it a variety of H. hispida. It is found plentifully on nettles by road sides in this 



