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small hole communicating with the starry centre of the vertebree, and 
running through their centre to the hooked joint at the extremity of 
these arms. 
“ On the under or inner side of these joints, their surface is rendered 
uneven by minute tubercles, by means of which, and of the hook, 
which the last joint forms, the animal can take a more secure hold of 
whatever he seizes. 
“ But as the stem of this animal appears to be broken off at the 
bottom, we must remain in doubt whether it moves about in the sea 
or is fixed to rocks and shells by a base, like corals, sponges, and ke- 
ratophytons. 
“We now come to what is called the head, perhaps the body, 
of this animal ; for in the centre of this dry specimen, there still re- 
mains a cup of a crustaceous substance, and of an oval form, about 
an inch in length, and three quarters of an inch over, and a quarter of 
an inch deep ; in the centre of this is a small hole, which, apparently, 
communicates with the internal part of the vertebrse of the stem : 
in this cup or cavity, it is probable, were the intestines and stomach 
of the animal, as in the asterias, called Caput Medusas. This cup is 
supported by the bases of six dichotomous testaceous arms or 
branches, (perhaps five is the natural number, for one seems irregularly 
placed). These lower parts or bases of the branching arms consist of 
three joints each, and surround the cup, to which they seem united ; 
each of these divide into two other jointed branches, that are round 
or convex on their under side, but flattish on the upper, with a deep 
groove running along the middle, which is furnished with two rows of 
suckers, like the sepiae or asteriae. From the upper edges of each al- 
ternate joint of these branches arise two rows of small jointed claws, 
like fingers ; these two opposite rows bend in towards each other : 
each small branch or finger is about half an inch long and one-twen- 
tieth of an inch broad ; the size of these joints diminish a little, till 
you come to the last joint, which ends in a point. Each of these 
