20 OCTOPODID^. 



Species of Octopus — continued. 



Medoria, Gray. superciliosus, Quoi/ and Gaim. 



XRQm.hxa,i\2iQ,e\x?,, Quoy and Gaim. Tchuelchus, D'Orh. 



ocellatus, D'Orh. and Ferus. tetracirrhus, Belle Ghiaje. 



Peronii, Lestieur. tetradynamus, Rafin, 



pilosus, Risso. tuberculatus, Blainv. 



polyzenia, Gray. venustus, Rang. 



rugosus, Bosc. vermetus, Ro/ng. 



Saphenia, Gray. vulgaris, Lam. 

 Sinensis, UOrh. and Ferus. 



The Octopus colossus of Montforfc, or Se2na gigas of Oken is 

 the Kraken, most probably an apocryphal species. 



Genus CISTOPUS, Gray. 



Arms with two rows of cups. Body round, without fins. 

 Distinct aquiferous cells between the bases of the arms. 



£Jcc. C. Indicus, Biippell, pi. 1, fig. 2. 



The genus Cistopus, of which only a single species is 

 known, has a small aquiferous system, consisting of a bag 

 with a small pore at the outer edge, situated between the 

 bases of the arms, and which serves to extend them ; the 

 suckers of the arms are sessile and placed in two rows : 

 they live on rocky coasts. 



Genus PINNOCTOPUS, D'Orbigny. 



Arms with two rows of cups. Body with fins. 



Ex. P. cordiformis, Qmi/ and Gaimard, pi. 1, fig. 3. 



This genus is characterized by the broad wing-like 

 expansions which are placed along the sides, extend in 

 front, and enfold all the body; the F. cordiformis, the 

 only species at present known, exceeds three feet in length, 

 and was captured by the naturalists of the Astrolabe, on 

 the coast of New Zealand. 



