42 



OLIVA BOMBYLIS. Tab. 16, fig. 4. 



Shell slender, subcylindrical ; spire prominent, acute, the vo- 

 lutions with an obsolete impressed line. 



Syn. O. CONSTRICTA, Lea, Con. p. 182, pi. 6, p. 196. 

 Locality. Clai borne, Alab. 

 Allied to O. clavula, Lam. rare. 



ANCILLARIA LYMNEOIDES. 16, fig. 6. 



Shell smooth, with a prominent acute spire, and a large fold 

 on the middle of the columella ; aperture effuse. 



Syn. MONOPTYGMA ALABAMIENSIS, Lea, Con. p. 186 p. 6, /. 201. 



Locality. Claiborne, Alab. 



This shell agrees with Ancillaria in every character but the 

 fold: if this is sufficient for generic distinction, the Conus sauri- 

 dens, nob. should be made the type of a new genus for the same 

 reason. Lea's second species of Monoptygma is an Actceon. 



No. 4, first edition, p. 44. 



ANCILLARIA TENERA. Tab. 16, fig. 5. 



Thin, ventricose ; spire turrited ; whorls angular and plicated 

 at the summit; aperture large, effuse ; columella much arcuated. 

 Locality. Claiborne. Alab. Allied to A. scamba, nob. rare. 



MITRA PEREXILIS. Tab. 16, fig. 7. 



Narrow-fusiform, with smooth convex whorls ; spire subulate, 

 much elevated ; base with impressed lines; columella 3-plaited; 

 aperture narrow. 



Locality. Claiborne, Alab'. 



MITRA FUSOIDES. Tab. 16, fig. 8. 



Short subfusiform, with longitudinal ribs, and minute spiral 

 lines distfnct at base ; whorls furrowed below the suture ; apex ob- 



[98] 



