OCTOPUS. 121 



Arms 2, 4, 3, 1 . 

 0. SUPER.CIL10SU8. Qiioy iiiul (Taiiiiiird. PL 27, tig. 18. 



Body oval, at'uiniunlcd behind, sliglitly granular, long-bearded ; 

 head very distinct, swollen, smooth in the middle, tuberculate 

 over the eyes; aims elongated, angular, conical, nearly equal; 

 cups far apart, large ; l)eak Avithout lateral wings. White when 

 alive. 



Total length, 100 mill.; length of body, U\ mill.; length of arms 

 2, 7T mill. ; 4, Tti mill. ; 8. TO mill. ; 1, GH mill. 



Bass' Straits, Australia. 

 Arms 4, 8, 2, 1. 



O. LUNULATUS. Quoy and (laimard. PI. 26, figs. 15, Ui. 



Body short, with scattered tubercles and about twenty promi- 

 nent circles with concave centres ; head short, thick, tubercular ; 

 arms short, conical, nearly equal, with circles on and between 

 them ; cups about fifty ; w^eb very short. White ; the circles 

 blue, paler in the centre. 



Length of body, 8 mill. ; length of tirms 4. 21 mill. ; :i, 20 mill, ; 

 2, 18 mill.; 1. 17 mill. 



New Zealand. 



Well distinguished from all other species by its remarkable 

 coloration. 



d. Body granular, rough. 



Arms 3, 3, 4, 1 or 3, 2, 4, 1. 



O. TETRicus. Gould. PI. 35, figs. 46, 47. 



Body large, oblong-ovoid, bilobed ventrally ; head subquaclrate, 

 eyes minute ; arms very robust, subquadrate, rather short, with 

 eighty to ninety pairs of cupules ; umbrella large, the membrane 

 passing up the arms two-thirds of their length. Surface rough 

 with warty granulations, especially large and prominent on back 

 of head and upper half of umbrella ; three cirri over the eyes 

 and apparently one below, and three along back of head. 



Length of body, 2-5 in. ; length of arms 2, 16 in. ; 3, 16 in. ; 4, 

 13 in.; 1, 12 in. 



Near Sydney^ New South Wales. 



