346 Proceedings of Royal Society of Edinburgh. [sess. 
Eurycope fragilis i F. E. B. Marion Island, Southern Ocean, 
Yokohama. 
Eurycope , of which three or four species are from the Southern 
Ocean, has nearly twenty other species from New Zealand, 
Sandwich Islands, New Guinea, the Azores, Japan, the 
east and west sides of the North Atlantic, and the west coast 
of Central America, all from deep water. 
Acaiitliocope spinicauda, F. E. B. 1800 fathoms, lat. 50° S., 
123° E. 
Acanthocope has two species from the Southern Ocean and 
Valparaiso, which two species are markedly different (Steb- 
hing, Crustacea , p. 387). Certain smaller genera of Mun- 
nopsidce are still only known from the North Atlantic. 
It appears from this list that every hnown Isopod from the 
Antarctic area (with the single exception of Eurycope fragilis , 
known also from Japan) is confined to that area, or the imme- 
diately adjacent seas, one species only extending so far as 
Valparaiso; while those genera that are not limited to the southern 
seas are cosmopolitan in their distribution. 
Without dealing in similar detail with the Amphipods, we may 
note that of fifty-eight species recorded from the Kerguelen region 
six only are recorded from elsewhere, four of these are also 
Australian, and of the remaining two, which alone are identical 
with northern species, Stebbing says (Chall. Rep., “ Amphipoda,” 
p. 1135), in reference to one, namely, Podocerus falcatus (Mont.): — 
“ There is the possibility, as I have elsewhere suggested, that these 
creatures may have travelled out from our own waters along with 
the vessel to the southern latitudes in which they were captured.” 
The specimen of this species recorded from the Cape of Good Hope 
is mentioned as having been taken from the screw of the ship. 
We may also add that in this genus the pronounced sexual dimor- 
phism and the great changes undergone in the different stages of 
growth have given rise to considerable confusion as to the exact 
limits of many of the species, which confusion has not yet been 
altogether removed. While in regard to the other, Eusirus longi- 
pes, Sars says (Amphipoda, Norway, p. 421): — “The form 
recorded by the Eev. Mr Stebbing under this name from the 
