MoUusca of St. Andrews. 427 



Fam. 31. Cyprseidae, Fleming. 



Genus 2. Cypr^a, L. 



Gyprcea europcea, Mont. Op. cit. iv. p. 403, pi. 7. f. 4, 

 V. 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 Mr. 

 Gwyn Jeffrejs's work is from a coloured drawing by my sister. 



Orderly. Pleurobranchiata, Gray. 



Fam. 1. Bullidse, Clark. 



Genus 1. Cylichna, Lovdn. 



Cylichna cylindracea^ Pennant. 0^. 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. 



Utrieulus truncatuluSj Brugui^re. Op. cit. iv. p. 421, 

 V. pi. 94. f. 2. 



Occasionally from deep water, and in ddbris 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. 

 ActcBon tornatilis, L. Op. cit. iv. p. 433, v. pi. 95. f. 2. 



Frequent off the West Sands, and thrown ashore after 

 storms. 



Genus 6. Scaphander, De Montfort. 

 Scaphander ligniarius^ L. Op. cit. iv. p. 443, v. pi. 95. f. 5. 



Not uncommon in deep water, and thrown ashore alive 

 after storms. 



31* 



