GASTEROPODS 



395 



F. canaliculata, both of which are 

 exceedingly common in sandy 

 shore stations from Cape Cod 

 southward. 



F. carica. The largest univalve 

 north of Hatteras, most easily rec- 

 ognized by its pear-shaped shell, with 

 simple suture and brilliant vermilion 

 aperture. The anterior canal is long 



Fulgur carica. 



and open ; the columellar lip is 

 twisted and arched, and the outer 

 lip is simple. There is a revolving 

 row of nodes or spines of various degrees of 

 prominence upon the shoulder of the body- whorl, 

 continued on the spiral whorls just above the 

 suture. The color varies from ashen-gray to a 

 dirty brown. In young specimens there ars 

 stripes and bands of violaceous brown, and the 

 shells are striate within the aperture. The length 

 of this shell is sometimes nine inches. 



F. carica frequents almost any sort of bottom. 

 In Long Island Sound they are common on stony 



ground, but they do not attain the maximum size and the high degree of 

 aperture-coloration characteristic of those taken along the New Jersey 

 shore, on sandy stations exposed to the surf. The string of curiously 

 shaped capsules containing the eggs of Fulgur is shown in Plate I. 



F. canaliculata often occurs associated with the last; It does not 

 attain quite the same size, but specimens of both species are, on the 



canaliculata. 



