6 CEPHALOPODA. DECAPODA. 
Pedes elongati, attenuati; antliis sessilibus duplici serie 
alternatis instructi ; membranis connectentibus ad pedum fere 
apices, utrinque productis. 
Legs elongate, attenuated towards their extremities ; their 
suckers simple, and sessile, arranged in a double alternating 
series ; the connecting membrane produced nearly to the ex- 
tremities of the legs, on each side. 
The stomach is extremely muscular, deeply grooved inter- 
nally, as in many birds, and covered by a loose, but very strong 
integument. From the pyloric end proceeds the large intes- 
tine, which runs above the liver, and after making two turns on 
the right side, returns at the back of the liver, and terminates 
before it, at the origin of the cloaca. 
The ink-gland is closely imbedded in the lower surface of 
the liver. 
1. Potypus ANTIQUORUM. 
S. pedibus quinquies fere corpore longioribus. 
Sepia Octopodia, Linn. Syst. Nat. xii. 1095. 
Habitat in mari. 
Legs nearly five times the length of the body. Inhabits the 
sea, and sometimes visits our coasts. 
Pennant has figured a species of the genus Eledone, under 
the name Sepia Octopodia; and as I cannot find that his 
figure has been copied from that of any other author, I think 
it proper to mention the circumstance, as it may lead to inves- 
tigation, and to the discovery of that genus in the British sea. 
ELEDONE may at once be distinguished from Polypus by 
the suckers on its legs, which are arranged in a single, and not 
in a double row. 
ORDER II. DECAPODA. 
Sac furnished with fins. Legs ten; eight as in the first 
order, having pedunculated suckers ; and two others very much 
elongated, and bearing suckers only at their extremities. All 
the suckers armed (in the indigenous genera with a horny 
