PYLORIC APPENDAGES OF FISHES. 



42!) 



commissariat is the most simple in the Piscine class. The 

 Lamprey, at the head of the Dermoiiterous order, derives from 

 the slight spiral extension of its intestinal mncous coat the 



28G 



PorLidi] oi tlie alinictitnry caii.'il of tho Salinoii {SuJ/iio salur), showJnQ: one double row of ca^csil 

 jiplienilji^a^s iiiul iioitioiis or Llie other, ccxxxr. 



required concomitant complexity of the digestive canal. In 

 several Osseous Fislies, either the inactive nature of the species, 

 or the extent or special modifications (the long intestine and 

 glandular palate of tiic Carp, the thickened mucous memhranc 



