PLATE XX. 



ToRNATELLA. 



1. T. easciata, Lamh. — Voluta tomatilis, Linn., Bulimus T., T. pel- 



lucida andpusilla (young). — Brit. co. generally. N. and S. Eu. 



Ovula. 



2. 0. patula, Venn. {Bulla). — Exmouth, Arran, etc., 20 fath. S. Eu. 



Wide aperture, Mc. 



3. O. acuminata, Brug. — Bulla and Yolvula a. — Loch Eyne, Lamlash, 



Galway, etc., R. S. Eu. Narrow, pointed. 



Cylichna. 



4. C. cylindracea, Penn. {Bulla.) — Bullina and Volvaria c, oliva, 



and umbilicata. — Brit. co. generally, C. N. and S. Eu. 

 B.C. obtdsa, Montagit {Bulla). — Utriculus, B. and C. Jerviscensis 

 and dlscors. — Brit. co. generally, C. 



6. C. mamillata, Pkilippi. — Bulla and Tornatina m. and trun- 



cahtla. — Exm., Skye, Galway, etc., Mc. S. Eu. Spire sunk, 

 apex mamillated. 



7. C. truncata, Adams, {Bulla.) — B. truncatula, return, semisutcata. 



— Brit. co. generally, C. N. and S. Eu. 



8. C. nitidula, Loven. — C. and Bulla n. and umbilicata.- — Skye, 



Loch Eyne, etc., R. N. Eu. Elongated, oval. 



9. C. conulus, Desk. — Zetland, Rr. Conical. 



10. C. strigilla, Loven. — C, Bulla, and Atys s. and ovulata. — Scot- 



land, Mr. Spirally striated. 



11. C. itmbiltcata, Mont. {Bulla). — Bullina and Volvaria u. and 



subcylindrica. — Brit. co. gen., Mc. With umbilicated apex. 



12. 13. C. Lajonkaireana, Basterot, {Bulla.) — Guernsey, R. Nar- 



rower, and with more raised spire than C. obtusa. 



Amphispira. 



14. A. hyalina, jFurt. {Bulla.) — A. diapkana and Utriculus pellu- 



cidus, minutus, and Candidas. — Scarborough, Weymouth, Cork, 

 etc. Littoral, Mc. N. Eu. Rather square. 



15. A. globosa, Jeffreys, Ann. Nat. Hist. Jan. 1859. — Skye. 



Akera. 



16. A. bullata, Miiller. — Bulla Akera, B. norvegica, B. resiliens, 



fragilis, fiexilis, Eanleyi. — Southampton, Zetland, Galway, etc. 

 Littoral, Mc. N. and S. Eu. 



