278 MOLLUSCA. 
The mouth leads through the jaws into a buccal chamber 
which contains a rasping odontophore of essentially the same 
nature as that of the snail. A duct from a 
pair of salivary glands opens into the buccal 
chamber. The esophagus leads back some way to the 
stomach, a large rounded sac.* From close to the junction 
of stomach and cesophagus the intestine passes forwards 
and downwards to the anus, and a small saccular cecum 
opens at the same point. Here also open the paired ducts 
Alimentary. 
Fig. 196.—VENTRAL VIEW OF SEPIA OFFICINALIS WITH 
MANTLE-Cavity Cut OPEN. (4d nat.) 
-Ctenidium. 
Nephridiopore. 
, Genital Aperture. 
Mantle-flap. 
from the two digestive glands, large masses lying right and 
left. The ducts are covered with masses of pancreatic ceca. 
Close to the anus the intestine receives the duct from a 
large zzk-gland. ‘The ink or seféa is ejected with the water 
from the mantle and forms a dark cloud, behind which the 
animal can beat a retreat. 
The prey is seized by the tentacles with their adhesive 
suckers and is torn to pieces by the horny jaws and the 
odontophore. The flesh is passed down the cesophagus 
