Mollusca of Gi'eat Britain. 355 



Clausilia bidens. Drap. Hist, des Moll. p. 68. t. 4. 



f.5—7. 

 Helix bidens. Miill. Verm. 2. p. 116. 

 Turbo laminatus. Pult. Dorset, p. 4-6. ed.2. p. 51. 1. 19. 



/. 9. Mont. Test. Brit. p. 359. t. 11. / 4. 

 Helix (Cochlodina) derugata. Fir. 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 corpora attenuato ; anteriore parte capitis proboscidali. 



Testa pyramidali-cylindracea ; anfractu ultimo ferh majore : 

 apertura dilatata, marginibus disjunctis, intiis la- 

 mellis continuis coarctata : peristomio extiis reflexo. 

 Umbilicus subperforatus. 



1. Secale. 



Animal nigrescenti-fuscum, nitidum, supern^ verrucosum. 



Sustentaculum angustum, crassum. 

 Testa cylindracea, in apicem attenuata, obliqu^ striata, 



pallid^ fusca. Anfractus 8. Apertura subrhomboidea, 



plicis 7 — 8 albis, nemp6 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.f. 49, 50. 



Lam. Hist, des Anim. sans Vert. 6. p. 110. 

 Turbo Juniperi. Mont. Test. Brit. p. 340. t. 12. /. 12. 



Maton Sf Rackett in Linn. Trans. 8. p. 182. Dillw. 



Cat. 2. p. 877. 



Plentifully in the crevices of limestone-rocks in some 

 parts of Somersetshire and Gloucestershire. When young 



the 



