50 E. LÖNNBNRG, ON THE CEPHALOPODS. 



The same words may be used for a third Octopus: 

 1 specinien Cabo San Sebastian, Jan. 1896. 

 This is a little lighter than the foregoing with some 

 cioudy darker spots. 



Octopus patagonicus n. sp. 



1 large specinien, Punta Arenas, n /i 1896 

 i small » Puerto Churruca 21 /s 1896 



The latter is a young collected on kelp. 



The smallest and the largest specimen in the collection 

 I cannot identify with any of the hitherto described species * 

 I must therefore, although unwillingly, give them a new name. 

 The most characteristical feature of this form is the total 

 absence of any umbrella between the ventral arms, althongh 

 it is very well developed between the others, especially 

 between the dorsal arms. Another good character is given 

 by the upper pairs of arms being the largest. 



The body 2 is broad and stout, about as long as wide r 

 mnch broader than the head. The mantle opening extends 

 behind the eye. The funnel is thick and blunt. The head 

 is comparatively narrow and the eyes prominent. The arms 

 are thick and strong and evenly tapering to iine tips, their 

 length being between four and five times that of the mantle 

 sac. The dorsal pairs of arms are longer than the ventral 

 pairs which are subequal. The order of length may be regar- 

 ded as 1, 2, 3 = 4. The suckers are very large on the 

 middle of the arms. The umbrella is widest between the 

 dorsal lateral arms and dorsal arms where it measures a 

 little more than the length of the body. Between the third 

 and fourth pair of arms it is less wide but even there 3 A 

 (or a little more) of the length of the mantle-sac. Between 

 the ventral arms the umbrella is entirely wanting and the 

 arms are completely separated from each other to their roots. 

 The outer lips are thin, the inner ones thick and covered 

 with large papillee. 



The surface of the skin cannot be described because it 

 is so densely wrinkled. This seems to be the usual effect of 



1 At least so far as the literature I have been able to procure is con- 

 cerned. 



a This description is made from the large specimen. 



