OF CONCHOLOGY. 151 



SYCOTYPHUS, Browne. 



S. MODESTUS, Con. — Amer. Jour. Science. 1848, p. 433, fig. 12. 

 S. Oregoxensis, (Fusus,) Con. — Amer. Jour. Science, 1848, p. 

 433, fig. 13. 



VOLUTID^. 



VOLUTILITHES, Swains. 

 V? INDURATA [Rostellaria,) Con.— P. 727, pi. 19, fig. 12. 



NATICID^E. 



LUNATIA, Gray. 



L. OregoneoS'sis, Con. — PI. 19, fig. 6, b, c. 



NEVERITA, Risso. 



N. SAXEA (N'atica,) Con.— P. 727, pi. 19, fig. 7. 



CATINUS, Klein. 

 C. SCOPULOSUS [Sigaretus,) Con. — P. 727, pi. 19, figs. 6 and 6 a. 



CBEITHIOPSID^. 



CERITHIOPSIS, Forbes and Hanley. 



C? Oregoxexsis, Con.— pi. 20, figs. 13, 14. 

 CANCELLAEIID^E. 



CANCELLARIA, Lam. 



C? Oregoxexsis, Con.— pi. 20, fig. 8. 

 CYLICHNID.E. 



CYLICHNA, Loven. 

 C. Oregoxa {Bulla petrosa,) Con.— P. 727, pl. 19, fig. 8. 

 C. petrosa {Bullina^) Con. — Amer. Jour. Science, 1848, p. 

 433, fig. 11. 



CALYPTR^IDJE. 



CRYPTA, Humphrey. 

 C. PR^RUPTA {Crepidula,) Con.— P. 727, pl. 19, figs. 9, 10. 



C. ROSTRALIS, Con. — Pl. 19, fig. 11. 



DENTALIIDiE. 



DENTALIUM, Lin. 



D.? SUBSTRIATUM {Teredo) Con.— P. 728, pl. 20, figs. 7 and 7 a. 



