772 Proceedings of the Royal Society 
Fauna. We met with it in the Faeroe Channel in the year 1869, — 
three examples, greatly mutilated, at a depth of 530 feet, with a 
bottom temperature of 6 0, 4 C. Station 12 (1868) — Several occurred 
attached to the beards of Holtenice off the Butt of the Lews, 
and specimens of considerably greater size were dredged in 862 
fathoms off Cape Clear. The range of this species is evidently very 
wide. It has been dredged by G. 0. Sars off the north of Norway; 
by Count Pourtales, in the Gulf-stream off the coast of Florida ; by 
the naturalists on board the u Josephine” on the “ Josephine Bank” 
near the entrance of the Strait of Gibralter; and by ourselves 
between Shetland and Faeroe, and off Ushant and Cape Clear. 
The Genus Bathycrinus (n. g.) must also apparently be re- 
ferred to the Apiocrinid^!, since the lower portion of the head 
consists of a gradually expanding funnel-shaped piece, which seems 
to be composed of coalesced upper stem-joints. 
1. B. gracilis (n. sp.). 
The stem is long and delicate, in one example of a stem alone, 
which came up in the same haul with the one perfect example 
which was procured, it was 90 mm. in length. The joints are 
dice-box shaped as in Rliizocrinus , long and delicate, towards the 
lower part of the stem 3*0 mm. in length by 0-5 mm. in width in 
the centre, the ends expanding to a width of 1*0 mm. As in 
Rhizocrinus , the joints of the stem diminish in length towards 
the head, and additions are made in the form of calcareous laminse 
beneath the coalesced joints which form the base of the cup. 
The first radials are five in number. They are closely opposed, 
but they do not seem to be fused as in Rliizocrinus , as the sutures 
show quite distinctly. The centre of each of the first radials 
rises into a sharp keel, while the sides are slightly depressed 
towards the sutures, which gives the calyx a fluted appearance, 
like a folded filter paper. The second radials are long and free 
from one another, joining the radial axillaries by a straight 
syzygial union. They are most peculiar in form. A strong 
plate-like keel runs down the centre of the outer surface, and the 
joint is deeply excavated on either side, rising again slightly 
towards the edges. The radial axillary shows a continuation of 
the same keel through its lower half, and midway up the joint the 
