448 THE ANATOMY OF INVERTEBRATED ANIMALS. 



with the pallial cavity either directly or through these cham- 

 bers. Thus, in Sepia officinalis, Krohn ' observed that the 





nr 



Fig. 126.—Se2)ia officinalis.— 1. The alimentary canal, with the ink-bag: ?>?^, buccal 

 mass; gb, inferior biicca] ganglion ; s\ posterior salivary glanrls ; oe, oesophagus; 

 k, liver ; dh, hepatic duct ; v, stomach ; v', pyloric rsecuni ; i. intestine ; a, anus; 

 bi, ink-bag; g.S]), splanchnic gauLiion on the stomach. (After Keferstein.) 



II. Longitudinal and vertical section through the buccal mass: mcc/. po.'^terlorbeak ; 

 mxs, anterior beak : 7nfjc, buccal membrane ; }7il, lip ; x, gustatory (?) organ ; rd, 

 radula; z, sacof the radula; s', salivary gland ; g/, superior buccal ganglia. (After 

 Keferstein.) 



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



renal chambers communicate not only with the cavities in 

 which the branchial hearts are lodged, but with a chamber 

 which contains the stomach and the spiral pyloric appendages ; 

 and that all these cavities are distended when air is blown 

 into one renal chamber. In J^ledone, on the contrary, he 

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



> " Ueber das wasserfiihrende System einiger Ceplialopoden." (" Archiv 

 fur Anatomic," 1839.) 



