1 Turnip Shell. j.:apa papyracea. 



2 Ear Shell, Siganlus ptrspicl'vi 



MOON SHELLS AND OTHERS 



3 Velvet Shell, Veliilina hnngala. 



4 Moon Shell, Nalica canrcna. 



5 Moon Shell. Naiica heros. 



6 Same, showing internal structure. 



