OCTOPUS. 125 



lowest, especially of the ventral arms, one-rowed ; web broad, 

 minutel}- granular above, especially between the upper arms. 

 I)e>s{'ril)0(l from alcoholic specimens in Brit. Mus. 



Australia. 



Arms ;5, 2, 4, 1. 

 0. C'ephea, Gray. 



Body smooth, oblong, rather elongate ; oculai- heard small, 



surrounded by other smaller beards ; arms thick, moderately 



long ; web broad, broader in front, upper surface quite smooth ; 



cups ver}' large, the 10th to 20th of lateral arms larger, equal, 



the four or five lowest of all the arms, one-rowed. Very like 



0. vulgaris^ but ditfers in the lateral cups. 



Specimens in alcohol, Brit. Mus. 



Habitat unknown. 



4. Doiibtful and apocryphal species. 



O. c^RULESCENS, Peron. Body short ; arms much longer than 



body ; cups ending in a point, but not clawed. Blue, varied 



with very small close purple dots ; cups whitish. — Blainville. 



The form of the cups, if correct, would indicate a difterent 



family. — Gray. 



Australia. 



O. LONGiPES, Leach. Bod}' elongated, oval, glabrous, gray s])otted 

 with black. Arms very long, slender. Cups large, rather ])i-om- 

 inent. Prob. = 0. Guvieri or 0. aranea. — Gray. 



Habitat unknown. 



O. BREViTENTACULATUS, Blaiuv. Bod}' short, globidar, smooth; 

 arms thick, cirroiis, conical, short ; proportion of length, 2, 3, 

 4, 1 ; the longest only three times as long as the head ; cups large. 

 Probably 0. octojiodia (vulgaris) contracted. 



Habitat unknown. 



0. VENTJSTUS, Rang. PL 29, fig. 28 a. 



Bod}^ oval, purse-formed, smooth ; aperture large ; head short, 

 rather broad ; eyes prominent ; arms rather short, nearly equal ; 

 cups small, — Rang. 



Indeterminable. A young specimen. 



Algiers (Aucapitaiue) ; Isle of Ooree. 



