of Edinburgh, Session 1883-84. 
725 
*fB. Ophioscolex 'piirjpureus, M. 
*B. Opliiotlirix fragilis, M., W. 
* Found in the warm area, t Found in the cold area, Found in both areas. 
M = Sars, M., “ Oversigt af Norges Echinodermer, ” 1861. 
S = Sars, G. 0., “Nye Echinodermer,” Vid.-Selsk. Forhandl,, 1871. 
W = A collection formerly in possession of the late Sir "Wyville Thomson, 
believed to have been sent to him by Prof. Sars, 
L = Lyman. 
B = Also belonging to the British shallow-water fauna (down to 200 fathoms). 
Hoyle, Proc. Roy. Phys. Soc. Edin.., vol. viii. pp. 135-155, 1884, 
When this list is compared with those given in the preceding 
table, it is found that every form mentioned therein occurs also off 
the Norwegian coast, with the exception of three species {AmpMura 
helUs, var., Ophioglyplia aurantiaca, and 0. signata) from distant 
parts of the world, and two {Ophiohyrsa Tiystricis and OpMomyxa 
&erpentarm\ described from single specimens in this locality. 
Of those which are also found in the British shallow water it will 
be seen that three are among those peculiar to the warm area, two 
are common, and two are peculiar to the cold area. Of these last, 
however, it must be noted that OgjJiioglypha Sarsii has only been 
found in British seas in moderately deep water off the Shetlands ; 
and if we exclude this as a doubtful inhabitant of our shallow water, 
it would appear that the British coast forms are more nearly related 
to those from the warm than those from the cold area. 
With respect to the Norwegian coast forms no such relation can 
be traced, which may probably be explained by the fact that 
Norway, with its great extent of indented coast-line with islands 
and fiords, has a great variety of physical conditions, and so pro- 
vides fitting homes for creatures of very diverse habit 
(2) Comparison of the Farde Channel Ophiuroidea with those from 
the Arctic Seas. 
The following is as complete a list as I have been able to compile 
■of the Ophiuroidea hitherto recorded from the Arctic seas ; that is, 
from Greenland, Spitzbergen, and the Barents Sea : — 
Gorgonocephalus Agassizii, DS., L. 
,, eucnemis, L., H. 
„ Lamar chii, L, 
