Mollusca of Great Britain. 377 
Helix octona. Linn. Syst. Nat. 4. p. 1248. Penn. Brit. 
Zool. 4. p. 138. t. 86. f. 135. 
—-— octanfracta. Mont. Test. Brit. p. 396 & 588. 
ll f d 
—-— peregrina. Dill. Cat. 2. p. 954. 
a. subovata ; anfractus 6, quorum infimus dimidium teste 
subzequans. 
Buccinum glabrum. Müll. Verm. 2. p. 135. 
In many parts of the North of England; though a local 
shell. The variety is from Yorkshire. The outer lip of the 
aperture is often thickened exteriorly by a white rib. 
8. TRUNCATULUS. 
Animal cinerascens.  Tentacula brevia, acuminata. 
Testa ovato-oblonga, acuminata, fragilis, substriata, flaves- 
centi-cinerea. Anfractus 6, ventricosiores, superné an- 
gulati, sutura excavatà. Apertura oer 
Long. 0.425.—Diam. 0.2. 
Limneus minutus. Drap. Hist. des Moll. - 55. t. 3. 
J. 5—T. 
Buccinum truncatulum. Müll. Verm. 2. p. 130. 
Helix Fossaria. Mont. Test. Brit. p. 312. t. 16. f. 9. 
Maton & Rackett in Linn. Trans.8. p.211. t.5. f.9. 
Dillw. Cat. 2. p. 964. 
Bulimus peregrus. Brug. Fu. Meth. fe AO, ae 
a. minor, cornea, ventricosior. foe 
| B. magis cyli drica, fulva 
 Nerita minuta. : 
wm M aT EA 
ANS. nearly every where in eher: often found in 
marshes occasionally overflowed by the sea. 
The variety 8. is remarkable for its more cylindrical i 
3c2 c m obtuse 
