448 THE ANATOMY OF INVERTEBRATED ANIMALS. 



with the palliiil cavity either directly or through these cham- 

 bers. Thus, in Sej^ta officinalis, Krohn ' observed that the 



Fig. 126.—Sepia nfficinalis.—l. The alimentary canal, with the ink-baff: mb, buccal 

 mass; gb, inferior buccal ganglion ; s\ po>^terior salivary glanrls ; oe, oesophagus; 

 /i, liver ; dh, hepatic duct ; v, stomach ; v\ pyloric caecum ; i, intesiine ; a, anus; 

 6e, ink-bag; {/sp, splanclmic ganulion on tlie stomach. (After Keferstein.) 



II. Longitudinal aud vertical section through the buccal mass: ma;?", posterior beak ; 

 ma;«Vlinierior beak ; mbc, buccal menihmne ; ml. lip ; x, gustatory (?) organ ; rd, 

 radula ; z, sac of the radula ; s', salivary gland ; gf, superior buccal ganglia. (After 

 Keferstein.) 



III. A single transverse row of teeth from the radula. (After Troschel.) 



renal chambers communicate not only with the cavities in 

 which the branchial hearts are lodo-ed, but with a chamber 

 which contains the stomach and the spiriil pyloric appendages ; 

 and that all these cavities are distended when air is blown 

 into one renal chamber. In JEledone, on the contrary, he 

 found, and I have repeated the observation, that one renal 



» " Ueber das wasaerfiihrende System einiger Cephalopoden." (" Archiv 

 fiir Anatomic," 1839.) 



