11s THE DEPTHS OF THE SEA. [CHAP. ITI. 
clypus, the pluteus ‘pseudembryo’ having been car- 
ried along and distributed by the gulf-stream, or 
of some European deep-water clypeastroid hitherto 
unknown. 
The three so-called species of the genus Toxo- 
pneustes of the cold area must, I fear, submit 
to fusion. TJ. pictus, Norman, and JZ. pallidus, 
G. O. Sars, are certainly varieties of 7. drobachi- 
ensis, O. F. MULLER. 
The young of Brissopsis lyrifera, Forbes, were 
abundant at all depths, but mature examples did 
not occur beyond 200 fathoms, and were larger 
and more abundant from 50 to 100 fathoms. 7vi- 
pylus fragilis, D.and K., a rather scarce Scandinavian 
form, was added to the British fauna; several speci- 
mens having been taken, unfortunately usually 
crushed on account of its great delicacy, in the 
deeper and colder hauls. Magnificent specimens of 
the handsome heart-urchin, Spatangus raschi, were 
very abundant, associated in the same zone of depth 
with Cidaris. 
Star-fishes were very numerous, rare and new 
species sometimes actually crowding the hempen 
tangles. The two species of Brisinga, Bb. endeca- 
cnemos, ABSJ., and B. coronata, G. O. SARS, came up 
occasionally and were always regarded as prizes, 
although it was a matter of some difficulty to ex- 
tricate their spiny arms one after the other from the 
tangles; they were scarcely ever within the dredge. 
Salaster papposus, ForBEs, apparently their nearest of 
kin though far removed, was represented abundantly 
by a very pretty deep-water variety, with ten arms 
about forty millimetres across from tip to tip, 
