32 MALACOZOA. CEPHALOPODA. SEPIINA. ELEDONE r 



deen. It agrees very well with Pennant's figure referred to 

 below. As the species represented by it is riot Sepia octa- 

 podia of Linnaeus, Mr. Forbes has named it Eledone Pen- 

 nantii. 



Sepia octopodia, Penn. Brit. Zool. iv. 53. PI. 28. f. 44. 

 Octopus octapodia, Flem. Brit. Anim. 254. Eledone Pen- 

 nautii, Forbes, Malac. Mon. i. 



2. Eledone Aldrovdndi. Aldrovandus 's Eledone. 

 Body elliptical, somewhat flattened, much rounded at the 

 nd; with the surface even, smooth, and of a bluish- white 

 colour. The margin of the sac free, unless at the back, 

 where it is continuous with the skin of the head. Measured 

 across the eyes, the head is narrower than the body, but seems 

 larger, owing to the great size of the bases of the arms. The 

 eyes, although large, are comparatively small. The head is 

 crowned by a circle of large, fleshy, compressed tapering arms, 

 of unequal length, and extremely slender at the end ; the 

 dorsal arms shortest the ventral pair longest. They are 

 covered internally with a single series of sessile cups ele- 

 vated on broad tubercles, of which there are from sixty to 

 "seventy. These suckers are not in mutual contiguity, but 

 placed at a little distance from each other, and enlarge from 

 the first to the fifth, which measures three-twelfths across ; 

 the horny portion cup-shaped or hemispherical. For more 

 than a third of their length, the arms are connected by wide 

 membranes, the margins of which run out upon them. The 

 mandibles are brownish-black, with a portion of the base white. 



Inch. Lines. 



Length from mouth to end of sac 3 6 



Breadth of body .,,. 2 2 



Length of upper or dorsal arms. *. 2 10 



,, ,, lateral dorsal 3 4 



,, lateral ventral 3 6 



ventral 3 9 



The above description is that of one of two individuals one 

 of which was found on the sands near Don-Mouth, in Novem- 

 ber, 1841, by my son John the other by myself. Their smell 

 was in no degree musky. The body being smooth and white, 

 and the arms proportionally short, this species cannot be con- 

 founded with the last, which has the acetabula crowded, 

 whereas in this they are well separated. It appears to me 

 to accord best with Delle Chiaje's Octopus Aldrovandi, cor- 

 pore, brachiis, et alis concoloribus. 



