CONIDiE.— VOLUTIDiE. 77 



PLEUUOTOMA C E K I N U M. — K uktz & Stimpson. 

 Plate XII. Figs. 9, 'Ja. 



Pleurotoma cerinum, Kurtz 4- Stimpson, Bost. Proc. Nat. Hist., Oct., 1851. 

 Pleurotoma cerinum, Stimpson, Shells of New-England, p. 49, pi. ii, fig. 2. 



Description. Shell small, fusiform, turreted, with about ten longitudinal folds, and 

 numerous transverse striae ; aperture oblong ; labrum simple. 



This shell has been found as far north as New-Bedford harbor. It is common on the 

 Carolina coast, and abundant in the Post-Pleiocene beds. 



Plate XII. Fig. 9, Natural size. 

 " 9a, Magnified. 



Locality. Simmons'; Cainhoy ; Waccamaw. 



Museum, College of Charleston; Cabinet F. S. H. 



VOLUTOMITRA.— Gray. 



VOLUTOMITRA W AUB EN SIS. — {New Species.) 

 Plate XII. Figs. 10, 10a. 



Description. Shell small, sub-fusiform, ventricose; spire much longer than the aper- 

 ture, papillary; whorls flattened, impressed with numerous transverse dotted grooves which 

 become obsolete below the sutures; sutures distinct; aperture ear-shaped, contracted 

 posteriorly ; labrum thin, simple, arcuated ; columellar with three oblique plaits. 



We are indebted to Dr. Edward Ravenel of St. Thomas, Cooper River, for this specimen, 

 which he discovered in the Post-Pleiocene marl of Wando river. We have named it 

 after this beautiful stream. 



Only one specimen yet found. 



Plate XII. Fig. 10, Natural size. 

 " 10a, Magnified. 



Cabinet of Dr. E. Ravenel. 

 20 



