BXPLANATION- OF /- PLATE XVI 
MELO INDICUS. 
Fic. 1.—The animal after removal of shell, from the right side. 
2.—The same, from the front. 
Ct., Ctenidium; Osph., Osphradium; R. S. T., Right siphonal tentacle ; 
L. S. T., Left siphonal tentacle; S., Siphon; Fore-R., Fore-roof; Pr., Proboscis ; 
Gr., Groove in anterior edge of foot; t., Cephalic tentacle (on fore-roof) ; e., 
Hye. 
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