GASTEROPODA I VOLUTID^E. 



VOLUTIM:, OR VOLUTE FAMILY. This Family con- 

 tains gasteropods which have the shell turreted or convo- 



Fig. 395- 



Fig. 396. 



Mitra epLco^alis, D'Arg. One half. Ceylon. 

 Fig- 397- 



Valuta musica, Linn. One half. 

 West Indies. 



Marginella wibeculata. Lam. 

 Two thirds. W. Africa. 



lute, and the aperture notched in front. There are seven 

 hundred living, and two hundred fossil species. Marine. 

 CYPR.EIDJE, OR COWRY FAMILY. This Family com- 

 prises gasteropods which have the shell convolute, enam- 



Fig. 398- 



Fig- 399- 



Omilum ovum, L. One half. New Guinea. 



Cypreza. One half. Indian Ocean. 



Figs. 400, 401 



elled, spire concealed, aperture narrow 



and channelled at each end, the outer lip 



inflected, and no operculum. There are 



two hundred living, and one hundred Trivia europea, Mont 



fossil species. Marine. Britain. 



NATICID^E, OR NATICA FAMILY. This Family con- 

 tains gasteropods which have the shell globular, few- 

 whorled, spire small, obtuse, aperture semi-lunar, and 



21 E E 



