CHAPTER XLIX: THE LIOTIAS 



Family Liotiid/E 



Shell small, solid, turban-shaped, body whorl large, with 

 longitudinal and spiral ribs and thickened lip; aperture round; 

 operculum many-whorled, horny, with limy layer. 



Genus LIOTIA, Gray 



Characters of the family. Chiefly tropical species, in Pacific 

 and Indian Oceans. A few West Indian species. 



Two small species inhabit shores of Santa Catalina Island, 

 California. L. fenestrata, Cpr., is a much depressed, oblique 

 shell, regularly sculptured by cross ridges and deep fissures. 

 The lip is thick; the umbilicus wide and deep. Diameter, J to J 

 inch. L. acuticosta, Cpr., has no cross ridges cutting its 

 whorls; their angles are set with faint nodules. It is J inch in 

 diameter, and less flattened than the previous species. There is 

 no umbilicus. Both species are yellowish white. 



L. Bairdii, Dall, a minute, few-whorled turban, J inch in 

 both diameters, is one of several southern species. 



Habitat. — Cape Hatteras southward. 



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