HIPPONICIDAE 165 



% to % inch in length, moderately stout, without an umbilicus, and 

 similar to E. angulatum, except that the 7 to 8 costae per whorl are thinner, 

 more highly developed and usually quite angular. Moderately common from 

 low water to 120 fathoms. Alias muricata Sby., spina-rosae Morch and pre- 

 tiosula Morch. 



Subgenus Gyroscala Boury 1887 

 Epitonium lamellosum Lamarck Lamellose Wentletrap 



Plate 2 23 



South half of Florida and the Caribbean. Also Europe. 



% to I % inches in length, without an umbilicus. 1 1 whorls whitish with 

 irregular, brownish markings. Costae thin, high, always white. Characterized 

 by a fairly strong, raised, spiral thread on the base of the shell. Moderately 

 common from low water to 33 fathoms. Ahas E. clathrmn of authors, not 

 Linne. 



Epitonium rupicola Kurtz Brown-banded Wentletrap 



Plate 2 2e 



Cape Cod, Massachusetts, to Florida and to Texas. 



/4 to I inch in length, moderately stout to slender, and without an um- 

 bilicus. Color whitish or yellowish with 2 brownish, spiral bands on each 

 side of the suture. Color often diffused. About 1 1 globose whorls, each of 

 which has from 12 to 18 weak or strong costae. Former, thickened varices 

 sometimes present. Base of shell with a single, fine, spiral thread. Formerly 

 known as lineatum Say and reynoldsi Sby. Common from low water to 

 about 20 fathoms. 



Epitonium indianorum Carpenter Money Wentletrap 



Forrester Island, Alaska, to Lower California. 



I inch in length, slender, pure white, of 1 1 whorls, each of which has 

 13 to 14 sharp costae which are slightly bent backwards. The tops of the 

 costae are slightly pointed. Fairly common offshore. 



Superfamily HIPPONICACEA 



Family HIPPONICIDAE 



Genus Cheilea Modeer 1793 



Cheilea equestris Linne False Cup-and-saucer 



Plate 2ip 



Southeast Florida and the West Indies. 



