OCTOPUS. Ill 



possible, and particular care has been taken to compress the 

 synonymy within reasonable dimensions and to present it collec- 

 tively and separately from the descriptive portion of the work : 

 it may be safely ignored by most readers. 



1. Cups of the arms sub-equal, regular. 



A. The lower cups far apart, in a single series. 

 a. Body smooth, not bearded. 

 Arms 4, 3, 2, 1. 



0. .KGINA, Gray. 



Body oblong, elongated, marbled. Eyes very prominent, without 

 ocular beards. Arms rather elongate. Web short. Cups 

 rather large and far apart, equal ; the five or six lower ones far 



apart, in a single series. 



Habitat unknown. . 



Described from a specimen in spirits ; size not given. A 

 doubtful species. 



0. ARANEA, Orb. PI. 23, figs. 1, 2. 



Body oblong, short. Head short, narrow; ocular beards one, 

 posterior. Arms much elongated, smooth, slender, very un- 

 equal. Cups small, close, numerous ; about 180 on the longest 

 arms ; the four lower ones in a single series. Web short. 



Total length, 215 mill.; length of body, 16 mill.; relative 

 length of arms, 1, 100 mill.; 2, 140 mill. ; 3, 170 mill. ; 4,195 

 mill. 



Isle of France. 



M. d'Orbigny has seen a mutilated specimen of double the above 

 dimensions. 



O. DEFILLIPPI, Verany. PL 33, fig. 39. 



Head rather oblong, narrow; body short; arms very long; 

 eyes unicirrated ; umbrella well developed. 



Length, 524 mill. ; length of s-ack, 40 mill. ; of head, 34 mill. ; 

 length of arms, 4, 390 ; 3, 370 mill. ; 2, 330 mill. ; 1, 300 mill. 



Mediterranean . 



It is certainly very close to O. aranea ; from which Verany 

 distinguishes it by its longer head and more developed umbrella 

 or web. 



