1%. 



23. 0. DiAPHANA, Jeffr. Ann. Nat. Hist. New Ser. vol. ii. p. 341. — E. 



Manifestly distinct, from No. 22. 



24. 0. STRiALATA, Alder. — Northumberland, Rr. Conical, striated. 



25. 0. MINIMA, Jeffreys, Ann. Nat. Hist. Jan. \, 1858. 



26. 0. INTERSTINCTA, J/oMi!. {Turbo.) — T., 0., Voluta, and Jaminia ca- 



nalicnlata, ohlonga, and ohtusa. — Biit. co. generally. Shallow 

 water, C. With longitudinal ribs. 

 27.0. DoiJOLiFORMis, Jeffr. — Scarborough, Exmouth, Swansea, Teuby, 

 Rr., Scotland. Oval, body-whorl very tumid. 



28. 0. Warrenii, Thompson, [Rissoa.) — Tilrhonilla and 0. ohliqua, 0. 



decorata. — Dublin, S. Devon, W. Scotland, R. Turreted. Mouth 

 oblique ; an umbilicus ; no fold or columella. 



29. 0. SPiRiALis, Mont. {Turbo.) — T'oliUa and liissoa s., pellucida,Sind 



plicatula.- — Brit. co. generally, not deep, Mc. Whorls ribbed 

 longitudinally above, spirally beneath. 



30. 0. DECUSSATA, Mont. [Turbo.) — T. Helix, Rissoa and 0. arenaria, 



peUucida ?, and d. — Exmouth, Lerwick, etc., R. Ribbed and 

 spirally striated. 



31. 0. EXCAVATA, Phil. (Rissoa.) — R., 0., and Cingula Harveiji and 



Beshai/esiana. — Dubhn, Arran, Guernsey, R. Largely sculptured. 



