230 



and size, some being proportionably longer than others 

 (the larger and more orbicularly shaped variety has 

 sometimes five, one of which is extremely small ' and 

 linear) these subvolutions defined by a depression and 

 wrinkled transversely ; aperture compressed, semilunar. 

 0,10. Common on all sandy shores. 



V. SUBROTUNDUM. Mont. p. 522. t. T4./. 9. 

 Flem. Wern. Mem. 4. p. 565. t. 15. /. 4. F.p. 233 

 Macff. Ab.p. 36. SERPULA. S.Turt. D. p. 155. 

 Suborbicular, subcompressed, smooth, glossy, opaque 

 white, composed of three compartments, the middle one 

 elevated above the rest on the upper side, not visible 

 beneath : aperture small, angulated : margin in live 

 shells yellow. 0,4. Not so common as the last. 



V. BicoRNE.-Mow^. p. 519. F.p. 234. SERPULA 

 B.Walk. t. I./. 2.TurtD.p. 156. Adams, t.14. 

 f. 2. Chambers three, the middle one small, raised or 

 depressed, the last suboval, compressed, striated longi- 

 tudinally on the longer side from the aperture : the other 

 side smooth : contracted towards the mouth which is 

 very small and orbicular. Sandwich and Reculver. 

 0,08. 



V. OBLONGUM. Mont. p. 522. Flem. Wern. Mem. 



