NATICIDAE 185 



^ inch in diameter, planorboid, nuclear whorls not visible; narrowly 

 umbilicate on both sides. Whorls keeled only near the aperture. Body whorl 

 near the aperture and the keel are corneous. No apertural slit. Operculum 

 small, trigonal and lamellar. A common pelagic species, and the only one 

 reported from our waters. 



Family CARINARIIDAE 

 Genus Camiaria Lamarck 1801 



Carinaria lamarcki Peron and Lesueur Lamarck's Carinaria 



Figure 42 



Atlantic warm waters; pelagic. 



Body up to 10 inches in length, tissues transparent; proboscis large and 

 purple. Shell K the size of the animal, cap-shaped, very thin, fragile and 

 transparent. Its apex is hooked. The shell is borne on top of the animal. This 

 is a valuable collector's item, and in former years it brought fancy prices. 

 Formerly known as C. mediterrafiea Lamarck and erroneously attributed 

 under that name to Peron and Lesueur. 



Figure 42. The heteropod, Carinaria lamarcki Peron and Lesueur, lives a pelagic 

 life in warm seas. The animal mav reach a length of 10 inches. It lives in an upside 



down position at the surface. 



Super jainily NATICACEA 



Family NATICIDAE 



Subfamily POLINICINAE 



Genus Polijiices Montfort 1810 



Polinices lacteiis Guilding Milk Moon-shell 



Plate 111 



North Carolina to southeast Florida and the West Indies. 



% to 1^/2 inches in length, glossy, milk-white, umbilicus deep with its 

 upper portion covered over by the heavy callus of the parietal wall. Peri- 

 ostracum thin, smooth, yellowish. Operculum, corneous, thin, transparent, 

 either wine-red or amber. Common in sandy, intertidal areas. P. uberinus 



