OCTOPUS. 117 



Total length, 190 mill. ; length of body, 33 mill.; of arms, 4, 

 155 mill. ; 3, 140 mill. ; 2, 134 mill. ; 1, 120 mill. 



Atlantic and Indian Oceans, Valparaiso, Cape Hatteras, 



North Carolina, Vineyard Sound, Mass. (1 spec.)- 



Arms 3, 2, 4, 1. 

 O. INCERTUS, Targioni-Tozzetti. PL 38, figs. 58, 59. 



Body ovate, subglobose ; ocular cirri two ; arms short, thick, 

 dorsally carinate, with first 1 to 3 suckers uniserial ; inter- 



brachial membrane scarcely developed. 



Indian Ocean. 

 O. MIMUS, Gould. PL 33, figs. 40-42. 



Bod}^ small, ovately globose, roughty reticulate ; head narrow, 

 with well-marked neck ; arms robust, four times the length of 

 the body ; cupules distant, scattered, about forty pairs on the 

 lower two-thirds of ventral arms ; umbrella very large, extend- 

 ing up the arms. With narrow, transverse clouds of chocolate- 

 colored dots. 



Length of body, 3-5 in. ; of arms, 3, 20 in. ; 2, 18 in. ; 4, 15 

 in. ; 1, 14 in. 



Callao, Peru. 



B. The lower cups rather crowded, 

 a. Body smooth, not bearded. 



Arms 2, 3, 4, 1. 

 0. EUDORA, Gray. 



Ocular cirri none ; arms rather short, subquadrangular, three 

 upper pairs sub-equal ; web short ; cups moderate, one or two 

 lowest one-rowed. 



Described from specimens in spirits. Not figured. 



Jamaica. 

 O. CASSIOPEA, Gray. 



Body oblong, moderately long, one medial ocular beard ; arms 

 moderate, rather thick at base ; cups moderate, sub-equal ; web 

 short. 



Brit. Mus. (in spirits). Not figured. 



Marseilles. 

 Arms 2, 1, 4, 3, nearly equal. 



0. PUNCTATUS, Gabb. PL 34, fig. 43 ; pi. 19, fig. 3. 



Body ovate, rounded below ; head moderately large, without 

 any well-marked neck, one-fifth the length of the body, abruptly 



