786 ATJSTKALIAN OCTOPODIDJE, 



Body short with, scattered tubercles and about twenty prominent 

 circles with concave centres. Head short, thick, tubercular ; 

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

 cups about fifty ; web very short. "White, the circles blue, paler 

 in the centre. Length of body 8 mill. ; length of arms, 4, 21 

 mill. ; 3, 20 mill. ; 2, 11 mill. ; 1, 17 mill. 



Hah. New Zealand. 



Well distinguished from all other species by its remarkable 

 colouration. 



d. Body granular, rough. 

 Octopus tetricus, Gould, Tryon, p. 121, pi. 35, figs. 46, 47. 



Body large oblong-ovoid bilobed ventrally ; head subquadrate, 

 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. 



Hal. Near Sydney, New South Wales. 



Octopus tuberculatus, Blainv., Tryou, p 122, pi. 29, figs. 22-27. 



Body short, round, back with four conical, acute, diverging 

 beards ; head short, ocular beards two, the hinder elongated ; 

 arms short, cups very large, the first three in one line, web rather 

 wide extending up the arms. Violet brown, beneath white- 

 Total length 400 mill. ; length of body 80 mill. ; length of arms 



2, 300 mill. ; 3, 270 mill. ; 4, 240 mill. ; 1, 230 mill. 



This species may be considered rather doubtful. Dr. Fisher, 

 Mr. Jeffreys and Verany regard it (notwithstanding its tuberculate 

 surface etc.) as a variety of O. vulgaris, whilst D'Orbigny, Gray, 

 Wankauff and Torgioni think it distinct. 



