210 POPULAR CONCHOLOGY. 



Family 10. — Turbinidce* 



This family constitutes the last of the Phyto- 

 phagous Trachelipoda. The animals breathe 

 only water, and all are confined to the sea. The 

 shell is turreted, conoid, or pyramidal ; the aper- 

 ture round or oblong ; and they appear all pro- 

 vided with an operculum. The three first 

 genera are more pyramidal than the rest, and 

 will stand upright on their base, with the axis 

 of the shell scarcely, if at all, inclined. There 

 are eight genera. 



77. Solarium. — Shell nearly discoid, not 

 perlaceous ; internal edge of the whorls visible 



in the umbilicus, which is very wide; mouth 

 almost square ; margin thin. Animal resembles 

 that of the Trochus. — There are 7 species re- 

 cent, and 11 fossil. 



The various species of this genus are brought 



# Les Turbinacees, Lamarck. 



