ZU OCTOPODIDiB. 



CrsTOPUS, Gray, 1849. 



Distr. — Oiil^^ two species known ; Celebes, India, Patagonia. 

 G. Indicus, Riippell (xxiii, 6). 



Body without fins ; arms with two rows of sessile suckers ; 

 upon the web connecting the arms is a bag opening by a small 

 pore between each pair of arms. 



SciEUEGus, Troschel, 185t. 



Distr. — Two species ; Mediterranean Sea. 



Body oval, wider than the head ; arms short ; cups or suckers 

 with narrow bases. Third left arm hectocotylized. 



As the principal character on which this genus is founded, is 

 the hectocotylized arm of the male, it is sometimes impossible to 

 ascertain whether specimens belong to this genus or to Octopus. 

 It is veiy probable that some of the species described under 

 Octopus should be placed here. 



Alloposus, Yerrill, 1880. 



Distr. — A. mo/Z^■s, Verrill (xxiv, 13). 100 m. S. of Newport, R. I. 



Allied to Philonexis and Tremoctopus. Body thick and soft, 

 smooth ; arms united by a web nearly to the ends ; suckers in 

 two rows, sessile ; mantle firmly united to head by a ventral and 

 two lateral commissures and by a broad dorsal band ; siphon 

 short, well forward. Right arm of third pair hectocotylized in 

 the male, and developed in a sac in front of the right eye. 



PiNNOCTOPUS, Orb., 1845. 

 Finned Octopus. 



Distr. — P. cordiformis, d'Orb. (xxiv, 12). New Zealand. 

 Body like Octopus but finned ; arms with two rows of suckers. 



Eledone, Leach, 1817. 



Syn. — Polypus, Owen. Moschites, Schneider, 1784. Ozaena, 

 Raf.,1814. 



Distr. — Three species ; Norway, Britain, Mediterranean Sea. 

 E. Aldrovandi^ Chiaje (xxiv, 11). 



Body rounded, without fins ; the arms with a single row of 

 suckers. Third right arm hectocotylized. 



U. moschatus inhabits from 10 to 100 metres in depth, rocky as 

 well as sandy shores of the Mediterranean Sea ; it appears in the 

 markets of Genoa in quantities from September to May. It is 

 able to throw itself out of the water to a distance of 8 or 10 feet, 

 and can also eject water from its funnel for over a foot. Verany 

 has seen it repeat this jet eight times, taking six to eight respi- 

 rations between each jet. 



Notwithstanding its musky odor, this species is largely used 

 for food ; some skin it, and others use seasoning to diminish this 



