MOLL USCA—BRA CHIOPODA . 



CLASS v.— CEPHALOPODA. 



Order I. — Tetrabranchiata. 



The Nautilus 



Order II. — Uibranchiata. 



645 



Sub-order i. — Dec^pnda. 



The Cuttle-fish, Etc. 

 Sub-order ii. — Octopoda. 



The Argonaut, Etc. 



SUB-KINGDOM IV.— BRACHIOPODA. 



LAMPSHELLS, &-c. 

 Characteristics of Brachiopods ... 649 | Lampshells, Etc 



646 

 647 



649 



