EXPLANATION OF PLATE XXX. 
MELO INDICUS. 
Fic. 5.—A longitudinal section through the proboscis, etc. in a 
state of complete retraction. 
,, 6.—The alimentary canal. 
»» 7-—The stomach region showing the openings from the 
digestive gland. 
,, 7a.—The oesophagus and stomach opened, to show the 
longitudinal ribbing of the wall. 
Ph. L., Expansion of oesophagus called by French authors ‘‘ Pharynx de 
Leiblein’’; R. S., Radular sac (turned to show ventral surface); R. B. G., Or- 
dinary or racemose buccal glands; T. B. G., Tubular buccal glands; Unp. Gl., 
Unpaired gland of oesophagus; Oes., Oesophagus; St., Stomach; Int., Intestine. 
