lea THE DEPTHS OF THE SEA. [CHAP. lV. 
This crab, from its long spiny legs and light body, 
very often comes up entangled on the part of the rope 
which had been passing over the ground. Another 
handsome new species, Amathia carpenteri, NORMAN 
(Fig. 35), was common in the sandy chalk-mud of the 
‘Holtenia ground.’ The genus had previously been 
familiar as a Mediterranean form. 7 
I quote from a preliminary notice of the Crus- 
tacea by the Rev. A. Merle Norman: ‘“ Ethusa 
granulata (sp. n.), the same species as that found 
off Valentia, but exhibiting a most extraordinary 
modification of structure. The examples taken at 
110—370 fathoms in the more southern habitat 
have the carapace furnished in front with a spi- 
nose rostrum of considerable length. The animal 
is apparently blind, but has two remarkable spiny 
eye-stalks, with a smooth rounded termination 
where the eye itself is ordinarily situated. In the 
specimens however from the north, which live in 
542 and 705 fathoms, the eye-stalks are no longer 
moveable. They have become firmly fixed in their 
sockets, and their character is quite changed. They 
are of much larger size, approach nearer to each 
other at their base, and instead of being rounded 
at their apices they terminate in a strong rostrate 
point. No longer used as eyes, they now assume the 
functions of a rostrum; while the true rostrum so 
conspicuous in the southern specimens has, marvellous 
to state, become absorbed. Had there been only a 
single example of this form procured, we should at 
once have concluded that we had found a monstrosity, 
but there is no room for such an hypothesis by which 
to escape from this most strange instance of modifi- 
