ocular-cirrus. Anns proportionally shorter. ;i ml nea rl y c|u;il in 

 length. (' iiiln-i-ll.-i well developed. oue-lil'th tin- length (f tin- 



arms. 



T>t:il length, -_>TO mill.; length of hea-1. :5U mill ; of body, 40 

 mill.: of :mns, 1. Is;, mill.; ;?, -JOU mill. V KKA.N v. 



Only a single s|)cciiiu'ii was observed by Vciany. Tin- color- 

 appear to lie more brilliant than in (). <-f<>/><><l/u. 



Arm* 3, 4, 2, 1 . 

 O. TKOSCIIKI.I. Targioni-Tox/etti. 



IJmly fllij)t ically obtuse, subpyriform, smooth; head small; 



hirnt-; arms thick at base, dorsally carinate, attenuate 



towards their ends; cups, five in a single series at base of :irm*. 



Mediterranean . 



0. vulgarly with which this has been confounded, has only 

 three cups in single series. The distinction is very doubtful, 1 

 think. The species has not been figured. 



Arms 8, 4, 2, 1 . 

 0. GERYONEA, Gray. 



Body (in spirits) marbled, smooth ; head, base of arms and 

 upper surface of web finely granulated ; eyes with one fleshy 

 tubercle, and one behind the eye ; upper eyelid rugose ; arms 



moderate, very thick at base, cups large; web broad. 



Brazil. 

 A very doubtful species. Never figured. 



c. Back slightly granular. 



Arms 4, 3, 2, 1. 

 0. HARDWICKEI, Gray. 



Middle of back, back of head and eyelids warty ; ocular 

 tentacles none ; arms moderate, rather slender ; cups rather 

 large, the five or six lowest one-rowed, rather far apart; web 



rather broad, quite smooth above. 



Singapore. 

 hi alcohol (Brit. Mus.). Not figured. 



Arms 1, 2, 3, 4. 

 O. GR<ENLANDICUS, Dewh. PI. :\-2< iig. :;;. 



Body ovate-cordate; with one supra-ocular cirrus ; arms short, 

 acuminate, contorted, unequal; suckers small, elevated. 



Greenland. 



