446 



THE ANATOMY OF INVERTEBRATED ANIMALS. 



Within the cavity of the mouth is an odontophore, with 

 its radula (Fig. 126, II.) ; and the long gullet passes back on 

 the middle line to open into the stomach, which is situated 



(ilf[. 



Fig. 125.— Diagrammatic Section of a female Sepia. — a, Buccal mass surrounded by 

 the lips, and showing the horny jaws and tongue; b, oesophagus; c, salivary 

 gland; d. stomach; e, pyloric caecum; g, the intestine ; h, the anus; i, the ink- 

 bag; £, the place of the systemic heart; I, the liver; n, the hepatic duct of the 

 left side; o, the ovary; p, the oviduct; g, one of the apertures by which the water- 

 chambers are placed in communication with the exterior ; r, one of the branchiae; 

 s, the principal ganglia aggregated round the oesophagus;/, the funnel; m. the 

 mantle; sh, the internal shell, or cuttle-bone ; 1, 2. 3, 4, 5, the produced and modi- 

 fied margins of the foot, constituting the so-called arms of the Sepia. 



toward the middle, or the end, of the mantle-sac. From the 

 stomach, the intestine, more or less bent upon itself, passes 

 toward the neural aspect of the body, and ends in the median 



