CANCELLARIA. 7 1 



nut bands on the body-whorl, one of which is frequently partly 

 visible on the spire. Length, 1-1*5 inches. 



Mediterranean Sea ; W. Coast of Africa. 



Weinkauff (Jour, de Conch., iii ser., iv, 7 13), gives some inter- 

 esting particulars of the habits and appearance of this animal. 

 He says that it lives upon a sandy bottom, almost completely 

 deprived of marine plants, although Deshayes supposed it to be 

 phytophagous ; it was mostly obtained at a depth of 25 to 30 

 feet, although some were found in shallower water. The animal 

 can develop itself until the head and neck are as long as the 

 shell, and the foot longer. Its movements are slow. A quantity 

 of fine sand adheres to the foot, so that when the animal retires 

 into its shell the aperture appears as though filled with sand, 

 The exterior of the shell is also covered with fine sand, requiring 

 a brush to remove it, and indicating possibly a burrowing habit. 



C. SIMILIS, Sowb. PL 3, fig. 35. 



Very narrowly umbilicated ; strongly, narrowly, distantly 

 ridged, cancellated by spiral closer ridges ; occasionally varicose ; 

 whitish, tinged with chestnut, usually imperfectly narrowly two- 

 banded with chestnut. Length, 1-1*25 inches. 



Senegal. 



A thicker, more globose and smaller species than the pre- 

 ceding, of which it is made a synonym by Weinkauff (Conch. 

 Mittelm.,ii, 171). 



C. PULCHRA, Sowb. PI. 3, fig. 36. 



Umbilicus wide ; shell slightly shouldered and coronated, 

 spinosely cancellated ; whitish, banded and lineated with chest- 

 nut. Length, 1-25 inches. 



St. Elena, W. Columbia (sandy, 8-10 fms.), Cuming. 



C. CHRYSOSTOMA, Sowb. PI. a, figs. 38, 37, 39. 



Whorls but slightly angled above, rudely decussated by thick 

 ribs and revolving ridges ; whitish, sparingly dotted and lineated 

 with chestnut; the umbilical ridge bears a single series of 

 chestnut spots, and the narrow shoulder is sometimes chestnut- 

 tinged ; columella, and sometimes the margin of the outer lip, 

 orange-color. Length, 1-1*25 inches. 



Panama and St. Elena, Cent. America. 



