Conchological Notices hy Dr. Tuiton. 665 



BuUmus decoUatus was observed io breed in great abundance, 

 for many successive years, in the green-house at Watton, in the 

 south of Devon, the seat of H. Studdy, Esq. lodged in the earth, 

 under the wood-work, whence they wandered abroad in the sum- 

 mer. This wood-work, and the earth, were removed, and re- 

 placed with stone, by which the colony was lost ; and all that 

 were preserved we owe io the care of Mrs. Griffiths and Miss 

 Hill. 



Bulimtis lineatus^ the Turbo fuscus of Walker, is found abund- 

 antly in wet springy places, in various parts of Devonshire, im- 

 bedded among the Jungermannia, constantly exposed io the 

 drippings of springs. A variety is also found of a pale yellowish 

 colour. 



BuUmus Clavulus, the Cochlicella Clavulus of Ferrussac, and 

 which Mr. Miller found in pine-beds, at Bristol, may now be con- 

 sidered to be naturalized, as much as the Testacellus Maugei. 

 Mr. Sowerby, in his Genera of Shells, considers it as a species of 

 Jchatina : but the pillar-lip is well rounded, and not in the least 

 truncate. The only British species of Achatlna are the j5mc- 

 cinum terrestre, and the Helix Octona of Authors, if the latter 

 shell may be properly said to be native. Lamarck has plac.ed the 

 Helix octona among his Bulimi; but the pillar-lip is evidently 

 truncate. 



Cyclostoma simile^ and C. acutum, of Draparnaud, of the more 

 modern genus Paludina, are both found in stagnant ditches : the 

 latter is the long lost Helix Stagnorum of Gmelin. 



Limneus Scaturiginum of Draparnaud, is found on the under 

 surface of the peltate leaves of the white Water-Lily. 



Helix pi/gm(va of Draparnaud, is found abundantly in ditches, 

 nnder leaves. Leach mistook it for the young of H. rupestris, the 

 H. umbilicata of Montagu, but it is very distinct, the two species 

 never being found together. 



The Clausilia Rolphii of Le^ch, is without doubt the Clausilia 

 plicatula of Draparnaud. The specific character may be thus 

 exhibited. 



CI. testa ventricosdf opaca, striis regularibus elevatis : plicis aper- 

 turw quatiioT s. quinque, duabus mojoribus. 



