MARINE MOLLUSCA OF NEW ZEALAND. 



An asterisk * prefixed to a species, means that I have seen no Xe\v Zealand 



specimens. 



Class Cephalopoda. 



HEAD large, separate from the body. Eyes large, lateral. Ears 

 developed. Mouth with two horny or shelly jaws with fleshy lips, 

 and surrounded by eight or ten fleshy arms, or numerous tentacles ; 

 furnished with an entire or slit tube, or siphuncle, used in locomotion. 



ORDER OCTOPODA. 



Body short, rounded ; head large ; eyes fixed ; arms eight, all 

 sessile ; no internal dorsal shell. 



FAMILY OCTOPID.E. 

 Body naked ; arms tapering, with short sessile cups. 



OCTOPUS. 



Arms with two rows of cups ; body round, without fins. 

 All tropical and temperate seas. 



* 1. O. limillatUS, Quoy, Vo,/. Astrolabe, ii., p. S6, t. 6. / I, 2 ; 



Gray, Cat. Moll., Brit. Mus., Cephalopoda, p. 11. Body short, 

 covered with scattered tubercles, and about twenty round prominent 

 circles with concave centres, in six series. Head short, thick, tuber- 

 cular, with one medial and two lateral convex circles, with a tubercle 

 in the centre. Arms short, conical, nearly equal ; order of their 

 length, 4, 3, 2, 1, with a circle between the bases of the arms. Cups 

 about fifty. Web very short. When alive white, varied with blue 

 circular spots paler in the centre. (Gray.) 



PINNOCTOPUS. 



Body oblong, with broad, lateral, wing-like "expansions, which 

 extend in front and enfold all the body ; arms very long, with two 

 rows of slightly prominent cups. 



New Zealand only. 



*2. P. cordiformis, Q-oy, i.e., ii., p. 27, t. c, / 2. Body 



orbicular, tubercular, \\inged. Arms nearly equal in length, the 

 lateral ones shortest. Eyes rather prominent. Reddish brown ; arma 

 with pale blue lunules. 

 1 



