MOLLUSCA. 
83 
Pleurotoma Trevelyana , Turton. Op. cit.rv. p. 398, 
v. pi. 91. f. 8. 
Not uncommon in the stomachs of cod and haddock. 
Fam. 31. Cyprseidse, Fleming. 
Genus 2. Cypr^ea, L. 
rcea europcea , Mont. Op. cit. iv. p. 403, pi. 7. f. 4, 
y. pi. 92. f. 2. 
Not uncommon at extreme low water, under stones in 
pools in the same region at the East Rocks, and generally in 
the laminarian region. The living animal represented in Dr. 
Gwyn Jeffreys’s work is from a coloured drawing by my sister. 
Order IV. Pleurobkanchiata, Gray. 
Fam. 1. Bullidae, Clark. 
Genus 1. Cylichna, Loven. 
cylindracea , Pennant. Op. cit. iv. p. 415, 
v. pi. 93. f. 4. 
Abundant in deep water; generally thrown on the West 
Sands after storms. 
Genus 2. Utriculus, Brown. 
Utriculus truncatulus , Bruguikre. Op. cit. iv. p. 421, 
v. pi. 94. f. 2. 
Occasionally from deep water, and in debris on sands. 
Utriculus obtusus , Mont. Op. cit. iv. p. 423, v. pi. 94. f. 3. 
Not uncommon in deep water. A variety with a more ex¬ 
tended spire is often met with in shell-debris from the West 
Sands. 
Genus 4. Action, De Montfort. 
Actceon tornatilis , L. Op. cit. iv. p. 433, v. pi. 95. f. 2. 
Frequent off the West Sands, and thrown ashore after 
storms. 
M 2 
