and Shells of Massachusetts Bay. 105 
sufficiently apparent to separate the shell distinctly from 
usus. This is the first individual of the genus, which 
has been discovered upon our own coasts, and but two 
species are found on the shores of G. Britain, both small, 
but very distinct from ours. The genus appears to be 
nearly extinct in northern seas, at the present day, though 
formerly existing in great numbers, nearly an hundred 
fossil species being enumerated by Des Hayes and De- 
france, the majority of them found in the great basin of 
Paris. 
CANCELLARIA BUCCINOIDES. 
Plate III. fig. 3. 
C. testa val edis lacteà, apice eet cse convexis, 
transverse suleatis, longitudinaliter striatis ; intüs candido, den- 
ticulato; columella leviter eallosà, arcuatà, gos eot Mida 
olivacea. ; ; ; 
Long. eleven twentieths, diam. of the last whorl seven 
twentieths of an inch. = 
Habitat waters of Mass. Bay. 
My own collection, Bost. Soc. Nat. Hist., N. Y. 
Lyceum of Nat. Hist., John C. Jay, M. D. (N. Y.), and 
A. A. Gould, M. D., Boston. 
Description. Shell oval, conical, sub-turreted, apex 
acute, whorls convex, varying in number from five to 
seven, with close transverse sulci, and longitudinally 
striated and sometimes plicated or rugose; sutures pro- 
found ; strie of growth distinct, body-whorl ventricose 
and longer than all the rest together; external color 
milky, interior pure brilliant white; aperture oval, base 
effuse and sub-canaliculate, lip thin and finely crenulated 
on the i inner edge, but without internal strie ; columella 
p Sipispod with three oblique plaits, the middle 
