402 MARINE INVERTEBRATES 



C. floridanus. 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 is yellowish, banded on a creamy- 

 white background, or dotted in circular rows. Length two inches. 

 (Plate LXXVII.) 



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 in length, 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 CANCELLABIIDJE 

 GENUS Cancellaria 



The last family of the Gasteropoda to be considered is the Cancel- 

 lariidce, 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 LXXVII.) 



CLASS SCAPHOPODA 



FAMILY DENTALIDJE 



-fn 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 



Entails striolata. ^^ They Rre 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, 



