402 MARINE INVERTEBRATES 
C. foridanus. A not unusual shell in shallow-water stations 
throughout the Florida coast. It has almost the exact outlines of a cone. 
The flattened shoulder is marked off by an acute carina ; the spire is low, 
bat many-whorled and pagoda-like; the aperture is long and narrow, 
and the lip is simple. The coloring i is yellowish, banded ona creamy- 
white background, or dotted in circular rows. Length two inches. 
(Plate LX XVII.) 
C. pealii. One of the smallest species of this genus, its length never 
exceeding one half of an inch, whereas the majority of the cones are over 
two inches inlength, and many of them rank as large shells. This little 
Floridian species is regularly cone-shaped, with carinated whorls, thin 
outer lip, and pagoda-like, low spire. The color is reddish-brown with 
sky-blue spots, or bluish-brown with lighter spots. There are encircling 
grooves about the base of the shell. 
FAMILY CANCELLARIIDE 
Genus Cancellaria 
The last family of the Gasteropoda to be considered is the Cancel- 
lariide, which has but one genus, Cancellaria. There are several 
species upon the east coast belonging to deeper-water zones, but 
one well-known species, C. reticulata, is very common on shore 
stations from Hatteras south. The shell is oblong and solid, 
with a moderate spire, and whorls slightly flattened below the 
sutures, and is very roughly granulated or reticulated. The 
aperture is narrowly ovate, and is ribbed inside. The columella 
has two very strong and prominent plaits. The color is white, 
banded and variegated with reddish-brown. Length an inch or 
more. (Plate LXXVIL.) 
CLASS SCAPHOPODA 
FAMILY DENTALIDE 
in nearly all collections of shells from the northeast coast of 
the United States are certain specimens about one to one and 
a half inches long, pure white, and 
shaped very much like an elephant’s 
tusk. They are round, hollow tubes, 
slightly curved, of larger diameter at one end than at the other, 
and with an opening at either end. There are two very common 
species of these tooth-shells upon the New England coast, Den- 
Entalis striolata, 
