Mollusca of Great Britain. 355 
Clausilia bidens. Drap. Hist. des Moll. p. 68. t. 4. 
ise. 
Helix bidens. Müll. Verm. 2. p. 116.. 
Turbo laminatus. Pult. Dorset. p.46. ed.2. p. 51. t. 19. 
F.9. Mont. Test. Brit. p. 359. t. 11. f. 4. 
Helix (Cochlodina) derugata. Fér. Tab. des Moll. p. 63. 
Not uncommon on the bark of trees in many of the mid- 
land and southern counties of England. 
Genus VII. PUPA. Drap. 
Animal corpore attenuato ; anteriore parte capitis proboscidali. 
Testa pyramidali-cylindracea ; anfractu ultimo ferè majore: 
apertura dilatata, marginibus disjunctis, intüs la- 
mellis continuis coarctata: peristomio extüs reflexo. 
Umbilicus subperforatus. 
1. SECALE. 
Animal nigrescenti-fuscum, nitidum, superne verrucosum. 
Sustentaculum angustum, crassum. | 
Testa cylindracea, in apicem attenuata, oblique striata, 
pallidé fusca. Anfractus 8. Apertura subrhomboidea, 
plicis 7—8 albis, nempé 4 columellaribus et 3—4 la- 
bralibus instructa: peristomio albo. 
Long. 0.3.— Diam. 0.115. 
Pupa secale. Drap. Hist. des Moll. p. 64. t. 3. fa 49, 50 
Lam. Hist. des Anim. sans Vert. 6. p. 110. — 
Turbo Juniperi. Mont. Test. Brit. p. 340. | 1. 12. zd 12. 
~ Maton Rackett in Linn. Trans. ; P- 182. Dillw. 
puru VM 
Plentifully in the crevices of limestone-rocks in some 
parts of Somersetshire and Gloucestershire. When gente 
: the 
