PLATE XVII. 



Odostomia. 



Kg. 



1. 0. UNIDE.N'TATA, Mo7it. {Turbo.) — Voluta u., 0. plicnla. — Brit. co. 



generally, Mc. Rather conical. Tooth strong ; no epidermis. 



2. 0. TUiiRiTA, Hanlei/, Brit. Mar. Conch. — 0. vn'uhiiiata, var. 



B. M. — R. More lengthened than No. 1. 



3. 4. 0. ACUTA, Jeffreys. — Torbay, Loch Eyiie, Galway, etc., Mc. 



Strong, conical. Suture deep. 



5. 0. PLICATA, Mont. {Turbo.)— Foltita p., F. pUcatula, 0. Anna, 



Jaminia p., etc., Mc. — Salcombe, Swansea, Dublin, Aberdeen, 

 Mc. Turreted. Narrow, thin. 



6. 0. ixscuLPTA, Mont. {Turbo.) — Voluta, Jaminia, and 0. ins. — 



S. Devon, Oban, Hebrides, etc., R. Conical, spirally striated. 



7. 0. PALLIDA, Mont. {Turbo.) — Vol., Cingula, Piiasianella p., 0. am- 



bigua. — S. Devon, Rr. Broad. Tliin, pillar straight. 



8. 0. CONOIDEA, Brock. — Turbo, Odost., etc. — N. Scotland, Ale. S. 



Devon, Mr. N. and S. Eu. White. Whorls straight ; throat 

 striated. 



9. 0. coxspicuA, Aliler. — Isl. Man, AYhitburn, Herm. Coloured. 



Whorls rounded ; throat striated. 



10. 0. TRO>'CATULA, Jeffrejs. — Plymouth. Elongated. 



11. 0. CYLiNDRiCA, Alder. — Turbo nivosus? — S. Devon, Ilf'racombe, 



Guernsey, Cork, R. Cylindrical, few whorls. 



12. 13. 0. EULIMOIDES, Hanleij. — 0. crassa, 0. pallida (var. f. 1-3), 



0. notata. — Brit. co. generally. Coralline zone, Jlr. Ample 

 body-whorl. 



14. 0. DDBiA, Jcffr. — S. Devon, Lerwick, Guernsey, Mr. Rather large 



body-whorl. 



15, 16. 0. ALBA, Jeffreys, (and var.) — Swansea, Skye, Zetland, Guernsey, 



Mr. Thin, v.diorls rounded. 



17. 0. NiTiDA, Alder. — S. Devon. Littoral, Mc. Aperture differently 



formed from No. 17. 



18. O. LuKisii, Jeffreys, Ann. Nat. Hist. 1859. — Guernsey. Sub- 



littoral and coraUine, Mc. Whorls tumid ; a slight umbilicus. 



19. 0. GLABRATA, Mu/il/eldt, {Helix.) — Eissoa imnctulum, etc. — Zet- 



land, R. Pillar-lip thin, arched. 



20. 0. mssoiDEs, Haaley. — 0. scalaris. — Channel Isls., Devon, Corn- 



wall, Tenby, etc., Mc. Thin, conical, no umbilicus. 



21. 0. ALBELLA, Loveii. — 0. rissoides, var., B. M. — Guernsey, S. 



Devon, etc. Turreted, upper whorls more cvliudrical than 

 No. 20. 



22. 0. OBLiQUA, Alder. — Tynemouth, Guernsey, 7 fath. to deep water, 



Rr. Thiu, oblique. 



/ 



