44G 



THE AX ATOMY OF IXVERTEBRATED ANIMALS. 



Within the cavity of the mouth is an odontophore, with 

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

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



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

 the lips, and showing the horny jaws and tongue; 0, oesophagus ; c, salivary 

 srlanil : d. stomach: e. "pyloric caecum : g. the intestine ; h. the aims; i, the ink- 

 ba<_r: k. the place of the systemic heart: L the liver; n, the hepatic duct of the 

 left side; 0, the ovary: p, the oviduct; q\ 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 asrsregated round the oesophagus; /, the funnel; m. the 

 mantle; »ft, 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 

 tow»»d the neural aspect of the body, and ends in the median 



