708 
Proceedings of the Boyal Society 
discovered by H.M.S, “Challenger” in the North Pacific. This 
small number of novelties does not, however, imply that the collec- 
tion is deficient in importance, for, owing to the peculiar configura- 
tion of the sea-bed in this region, every dredging in it is of value ; 
and when, as in this case, the physical conditions are carefully de- 
termined at each station, the result possesses a very great interest 
for students of the distribution of animal life upon the globe. 
Before proceeding further, I give a list of the species collected 
by H.M.S. “Triton,” arranged according to the stations at which 
they were obtained. 
I have also had the opportunity afforded me by Mr Murray of 
examining the Ophiurids obtained by H.M.S. “Knight Errant,” 
already recorded in the Proceedings of this Society,* and also a large 
proportion of those collected by H.M.S. “Porcupine.” These last 
have been named by Mr Theodore Lyman, but as no list of them 
has yet been published, and as reference will be made to them in 
what follows, I think it well to enumerate them here, although the 
list will be far from complete, for the collection to which I have 
had access does not contain all the specimens collected by the “ Por- 
cupine,” and especially is it deficient as regards the cruise in the 
Mediterranean in 1870. In a few instances the list has been supple- 
mented by information derived from the published accounts of the 
“ Porcupine ” inv3stigations. f 
The figures f olio vu'ng .each name indicate the number of speci- 
mens caught. 
The First Cruise of H.M.S. “ Porcupine,” 1864. 
Off Valentia.J May 24th. Depth, 110 fathoms. 
Ophiothrix pento,pliyllum (Pennant), . . .20 
Ophioglyplia alhida (Forbes), . . . . .5 
Lough Swilley. June 10th. Depths 13 fathoms. 
Ophioglypha lacertosa (Pennant), . . . . 9 
* Proc. Roy. Soc. Edin., vol. xi. p. 707, 1882. 
t Carpenter, Jeffreys, and Thomson, Proc. Roy. Soc, Lond,, vol. xviii. 
pp. 397-492, 1870 ; AVyville Thomson, Depths of the Sea, London, 1874. 
+ The bottles containing these specimens are labelled, “ ‘ Lightning,’ off 
Valentia,” but there must be some error in this, for no dredgings were made 
by that vessel in this locality. 
