NOVA SCOTIAN ECHINODERMATA.—-HONEYMAN. 253 
Art. VII—Nova ScoTran ECHINODERMATA.—By THE Rev. D. 
Honmyaran, DC. /.-Hy RiS: C.F. S.Scy &e: 
Curutor of the Provincial Museum, Halifaz. 
In our recent Studies of Marine Invertebrates, we have been 
led to give some attention to the admirable collection of Nova 
Scotian Echinodermata in our Provincial Museum. We propose 
to give the results in this paper. 
Of the Sub-kingdom Anneloida, Class I, Echinodermata, we 
have the following Orders represented : 
1st. —Crinoidea. 
2nd.—Ophiuroidea. 
3rd.—Asteroidea. 
4th.—Echinoidea. 
5th.—Holothuroidea. 
The first of these is represented by 
Comatula or Antedon Specimens. 
Of this we have two specimens which were presented to the 
Museum by Sir C. Wyville Thomsen, of H. M.S. “ Challenger.” 
They were dredged on the LaHave Banks from a depth of 75 
fathoms. This is a modern representative of the ancient Crin- 
oids, which flourished in Nova Scotia, largely at Arisaig, in 
the Lower and Upper Silurian Periods, and to a less extent in 
the Lower Carboniferous, e. g., East River, Pictou. For crannies 
see our Museum Collections. 
Our Antedon specimens are in the mature state. When young 
they were on stalks and fixed. Then their resemblance to our 
Silurian Crinoids was sufficiently obvious. Now their resemblance 
is not so striking. It is only when examined critically that this 
is: manifest. Their present aspect is feather-like. Hence a 
“common name’—“ Feather Star.” Their body is cup-shaped 
and pentagonal. From each side proceeds a double ray—arm. 
The mouth lies between. The rays are each fringed with a 
