XII 



PHYLUM MOLLUSCA 



713 



Fig. 026, oss.), following on the buccal cavity, is a narrow 

 straight tube, which runs between the halves of the liver towards 

 the aboral end of the body. It opens into a rounded thick- walled 

 stomach (st.), and, close to the pyloric aperture leading from the 



77iant.ca.r-l 4 ^ 



FIG tii'l. Sepia cultrata, female seen from the posterior aspect, the wall of the mantle-cavity 

 divided along the middle line and the two flaps thus formed spread out sn :is to expose the 

 contents. <. ii.iil. accessory uidamental glands ; a/t. anal aperture with its lateral appendages ; 

 /'. membranous fold attaching the ctenidium to the wall of the mantle-cavity; iiif, extt-ni:il 

 opening of funnel ; i,if. rti,-t. infundibular cartilage ; iiik *. ink-sac ; ink <>. ink-duct ; li<i. lig'a- 

 mentous band which extends from the anterior wall of the mantle-cavity to the ovary, cut 

 across; lir. liver; /. ctcn. left ctenidium; /. ncph. left nephridial aperture; /. n'l. left 

 nidameiital gland; /. *t. <i. left stellate ganglion; immt. cart, mantle cartilage ; //">. mouth; 

 ltd'.*, neck muscles ; m- ovarj' ; ori<l. oviduct rcct. rectum. 



latter into the intestine opens a wide cwcum (c.). The alimentary 

 canal at this point bends sharply round upon itself, and the in- 

 testine runs nearly parallel with the oesophagus to open into the 

 mantle-cavity as already described. 



A pair of glands (Fig. 624, s. g. ; Fig. 626, W.), which arc 



