A450 THE DEPTHS OF THE SEA. [CHAP, 1X, 
canals, equal in number to the number of arms, pass 
across the disk, and are continuous with the arm- 
erooves. The mouth is surrounded by a row of 
flexible cirri, arranged nearly as in the pentacrinoid 
of Antedon, and is provided with five oval calcareous 
valve-like plates, occupying the interradial angles, 
and closing over the mouth at will. <A low papilla 
in one of the interradial spaces indicates the position 
of the minute excretory orifice. 
Rhizocrinus loffoteisis is a very interesting addition 
to the British fauna. We met with it in the Froe 
Channel in the year 1869—three examples, greatly 
mutilated, at a depth of 5380 fathoms, with a bottom 
temperature of 64 C., Station 12 (1868). Several 
occurred attached to the beards of the //oltenie, off 
the Butt of the Lews, and specimens of considerable 
size were dredged in 862 fathoms off Cape Clear. 
The range of this species is evidently very wide. It 
has been dredged by G. O. Sars off the north of 
Norway ; by Count Pourtales in the Gulf-stream off 
the coast of Florida; by the Naturalists on board 
the ‘Josephine,’ on the ‘ Josephine Bank,’ near the 
entrance of the Strait of Gibraltar ; and by ourselves 
between Shetland and Froe, and off Ushant and 
Cape Clear. 
The genus Bathycrinus must also be referred to the 
Apiocrinidee, since the lower portion of the head con- 
sists of a gradually expanding funnel-shaped piece, 
which seems to be composed of coalesced upper stem- 
joints. 
The stem of Bathycrinus gracilis (Fig. 73) is long and 
delicate ; in one example of a stem alone, which came 
up in the same haul with the one nearly perfect speci- 
