S54 
MOLLUSCA. CEPHALOPODA. Octopus. 
46. O. octopodia . — Body rounded, smooth, mantle connect- 
ed with the head behind ; suckers sessile, arranged in a single 
row. 
Sepia Oct. Penn. Brit. Zool. iv. 53. t. xxviii. f. 44. 
This species appears to have been confounded with the preceding. Pen- 
nant states, that it inhabits our seas ; and Montagu is said, by Mr Sowerby, 
to have communicated a specimen to him, probably from the coast of Devon. 
Dr Grant has obligingly communicated to me the following observations 
on a recent, apparently full grown specimen from the Frith of Forth, pre- 
sented to him by Mr John Coldstream. Length of the body 4| inches, of the 
head 2 inches; breadth of the body 3| inches ; arms 12 inches long, webbed 
at the base as high as the twelfth sucker, compressed, strong, the extremities 
filiform. Suckers becoming larger to the sixth, and then diminishing to- 
wards the extremity, with a broad muscular margin; about 111 can be 
counted, with the aid of a lens, on each arm. Eyes very small, with a sub- 
dorsal aspect, and near covered with distinct eyelids, and having the iris 
white. The absence of the musky smell distinguishes this species from the 
Octopus moschatus of Lamarck. 
The different species of Sepiadse secrete an inky fluid., differing, however, 
in the shade of colour according to the species, which they eject upon being 
pursued or captured. 
The collection of Mr MiUer of Bristol is said to contain a specimen, from 
the Lias., resembling the back of one of the Sepiadge.— .Geol. Eng. and Wales, 
26?. 
