2 CEPHALOPODA. 
CLASSIS I. CEPHALOPODA. 
Cephalopoda, Cuvier. 
Sepia, Linné. 
Corpus sacco immersum. Os centrale, mandibulis duabus 
fortissimis rostrum psittacinum inversum referentibus, armatum. 
Labium circulare, carneum, mandibulas amplectens ; externé 
reflexum, annulum tenuem circa partem carnosam efformans. 
Pedes octo aut decem, in aspectum interiorem antliati, os cir- 
cumdant. Oculi duo, laterales, perfecti. Saccus cloaca que 
corpori infra annectitur instructus. Sexus distinctus. 
Ordinum Characteres. 
Ordo I. Ocropopa. Saccus apterus. Pedes octo, per 
totam longitudinem interiorem antliati: dntlie simplices. 
Cloaca simplex. Labium ultra reflectionem annularem non 
productum. Dorsum osse nullo mstructum. 
Ordo II. Decaropa. Saccus pinnis instructus. Pedes 
decem; octo ut in ordine primo; duo alii supplementarii, 
valde elongati et ad apicem solummodo anthati: dnthe 
armatee (annulo corneo externé szepius spinulifero m generibus 
indigenis omnibus instructz). Cloaea valva interna instructa. 
Labium ultra reflectionem annularem in membranam dilata- 
tum. Dorsum osse instructum. 
The animals of this class are commonly denominated Cuttles, 
Cuttlefish, Sleevefish, Inkfish, or Squids. 
Their body is surrounded by a sac. Mouth central, armed 
with two very strong jaws, somewhat resembling the beak of a 
parrot inverted. Lip circular and fleshy, embracing the man- 
