192 AURICULIDiE. 



They live in brackish water and salt-water marshes, 

 at the roots of rushes, and are sometimes found under 

 stones on the sea-shore near the mouths of rivers. 



Mr. Lowe (Zoo/. Journ. iv. 280.) at one time 

 thought that the animal might be ptenobranchous ; 

 but he has since seen reason to doubt this conclusion ; 

 and the question has been settled by Mr. Berkeley's 

 admirable observations and figures of the animal. 

 {Zool. Journ. v. 429. t. 19. f. 3^) 



On account of the marine or semimarine habit of 

 most of the species of this genus, they were not 

 noticed by Dr. Turton in the first edition of this 

 Manual ; but as they are the only British Pneumono- 

 hranchiata which inhabit such places, and as I have 

 found C. denticulata high up the Thames, I have 

 been induced to insert them. 



a. Pillar 3- or 6-plaited ; mouth toothed ; peristome 

 slightly reflcxed. (Ovatella Bivona.) Paludi- 

 nal, or marine. 



88. 1. CoNOVULUS denticulatus. Denticulated Co- 

 novulus. — Shell oblong, brittle, smooth, brown 

 or purplish ; spire conical, ciliated ; mouth ob- 

 long, rather thickened; pillar three- or five- 

 plaited, (p. 219. f. 4, 5.) (t. 12. f. 144.) 



Turbo bidentatus. Walher, Test. Min. Ear. f. 50. and 53. — 

 Voluta denticidata. Mont. Test. Brit. 234. t. 20. f. 5. ; 

 Berkeley., Zool. Journ. v. t. 19. f. 3., animal. — Voluta 

 ringens. Turton., Conch. Diet. 250. — Voluta reflexa. Tur- 

 ton, Conch. Diet. 250. — Auricula myosotis. Jeffreys, Linn, 

 Trans, xvi. 3G8. (not Drop.) — Alexia personata. Adfims, 

 P. i', 5. 1854. — Acteon denticulatus. Fleming, B. A. 337. 



