inhabiting the seas of Great Britain and Ireland. 835 



tide. The rest inhabit gravelly and stony ground in various 

 depths of water, ranging from 1 to 50 fathoms and probably 

 more, and are found in the crevices of stones and shells and at the 

 roots of Laminaria digitata. The animal is most probably zoo- 

 phagous, inasmuch as they are not found on sea-weed, and they 

 frequently occur beyond the range of vegetable life in the deeper 

 parts of the sea. 



Specierum enumeratio. 



A. Columellari denticulo seu plica instructae. 

 * Lseves aut concentrice striatse. 



1. pallida. 7. albella. 13. conoidea. 



2. notata. 8. acuta. 14. diaphana. 

 8. Rissoides. 9. turrita. 15. obliqiia. 



4. alba. 10. cylindrica. 16. insculpta. 



5. nitida. 11. plicata. 17. dolioliformis. 



6. dubia. 12. unidentata. 



*■* Longitudinaliter costatse. 

 18. spiralis. 19. interstincta. 



B. Edentulse et plica carentes. 

 * Longitudinaliter costatse aut decussatse. 



20. indistincta. 23. excavata. 26. rufa. 



21. pellucida. 24. clathrata. 27. formosa. 



22. ifenestrata. 2.'>. scalaris. 28. lactea. 



** Lseves. 



29. Scillae. 31. acicula. 32. affinis. 



30. clavula. 



1 . Odostomia pallida, 



Tiirho pallidus, Mont. Test. Brit. 325. tab. 21. fig. 4. 



Valuta ambigua, Mat. and Rack, in Linn. Trans, viii. p. 132. 



Turbo unidentatus, Turt. Conch. Diet. 222. 



Odostomia unidentata, Fl. Brit. An. 310 ; Macg. Moll. Aberd. 154. 



Phasianella pallida, Fl. Brit. An. 302. 



PyramidellaQ) pallida, JefFr. in Ann. Nat. Hist. 1841, p. 165. 



Rissoa pallida, Br. (2nd ed.) 13. pi. 8. fig. 24. 



Jaminia unidentata, id. 21. pi. 9. figs. 34, 35. 



Odostomia pallida, Aid. Cat. 51. 



Salcomb Bay, Devonshire (Montagu). Western coasts and Dublin 

 Bay (Turton and J. G. J.). Northumberland coast (Alder). Ex- 

 mouth (Mr. Clark and J. G. J.). Oban ; Lochs Broom, Kishorn 

 and Carron, Ross-shire ; Zetland, five miles east of Lerwick, in forty- 

 fathoms ; Swansea ; Whitesand Bay, Cornwall. West coast of Scot- 

 land ; Arran Isle, county Galway (Mr. Barlee). Torbay (Dr. Bat- 

 tersby). 



Var. a. solidior. 

 Birtabuy Bay, cv^, Galway (Mr. Barlee). 



