116 THE DEPTHS OF THE SEA. [CHAP, IIL. 
coloured sand grains, for every. chamber of the series 
into which the test was divided. ‘The new form, how- 
ever, was found not to be divided into chambers, but 
to have its cavity continuous throughout, “ though 
traversed in every part of its length by irregular 
processes, built up partly of sand-grains and partly of 
sponge-spicules,” resembling those described by Dr. 
Carpenter in the gigantic fossil form Parkeria.’’ One 
extremity of this chamber is arched over, spaces being 
left between the agglutinated sand-grains, through 
which it appears that the gelatinous being within 
communicates with the outer world by protruding its 
sarcode processes. The other end was so constantly 
broken off, leaving a rough fracture, that Dr. 
Carpenter was inclined to believe that this form, to 
which he gave the generic name of Botella, grew 
attached to the bottom or to some foreign body. 
The cold area teems with echinoderms. In the 
channel north and west of Shetland, we added to the 
fauna of the British area besides a large number of 
species new to science, nearly every one of the forms 
described by the Scandinavian naturalists as inhabit- 
ing the seas of Norway and Greenland. 
In comparatively shallow water Cidaris hystrix 
was most abundant, and of large size. The large 
form of Hehinus flemingii, BALL, was rare; but every 
haul at all depths brought up some variety or other 
which was referred with doubt to L. elegans, D. and 
K., to one or other form of #. norvegicus, D. and K.., 
or to L. rarituberculatus, G. O. Sars; and although 
it may, perhaps, be necessary still to describe all these 
which certainly in their extreme forms present very 
1 Philosophical Transactions, 1869, p. 806. 
