OCTOPUS. 119 



Arms nearly equal. 

 0. BREVIPES, Orb. PL 25, fig. 10. 



Body oblong, large ; head short, broad ; eyes prominent, 

 without lids ; arms short, conical, about one-third the length of 

 the animal, upper pair rather longest. Bluish with red spots. 



Length of body, 7 mill. ; of superior arms, 6 mill. ; total length, 

 17 mill. 



D'Orbigny distinguishes this from all other species by the 

 shortness of its arms ; it is doubtless young. 



23 N. lat., 35 W. long., Atlantic Ocean. 



O. FTJRVUS, Gould. PL 35, figs. 48, 49. 



Body pyriform ; head elongate, dilated below ; eyes large, 

 with three cirri ; arms very long, graceful, sub-equal ; suckers 

 large, approximate, 96 pairs on upper arms ; web small. 

 Ochraceous, mottled. Length of body. (> in. ; of arms about 

 40 in. 



Obtained in the market and from fishermen. 



Rio Janeiro. 

 Arms 2, 1, 3, 4. 



O. TETRACIRRUS. (Miiaje. PL 27. fig. 17. 



Body oval, bursiform, flaccid, with sometimes a tubercle at its 

 extremity ; head rather large, with prominent eyes, and two 

 ocular cirri ; arms three times t lie length of the body, conical- 

 subulate, laterally compressed, with about 130 small cups on the 

 longest ; web very elastic and much developed, embracing a 

 quarter of the arms ; siphon short, cylindrical and rather large 

 proportionally ; skin very elastic and a little transparent. 



Total length, 200 mill. ; length of arms. 2, 130 mill. ; 1. 128 

 mill.; 3, 102 mill.; 4, 90 mill. 



Distinguished by its very elastic skin and flaccid consistence, 

 its brilliant coloring and its well-developed web. 



Sold in the Genoese markets. 



Mediterranean, 

 b. Body smooth, bearded. 



Arms 4, 3, 2, 1. 

 O. HORRJDUS, Orb. PL 25, fig. 11. 



Body short, round, with numerous, regularly placed, diverging 

 beards ; head short, with diverging beards round the eyes ; 



