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We had not time to make any systematic exploration
of the caves with a view to increasingO our
knowledge of the animal remains which they contain,
hut His Excellency, Sir Eenwick Williams of
Kars, the Governor of Gibraltar, with other kind
attentions, placed at our disposal a considerable collection
of hones and implements which had heen
brought together by an officer formerly stationed at
Gibraltar, and we had thus an opportunity of forming
some idea of the curious succession of the inmates
of the caves from pre-historic times down
almost to our own.
We left Gibraltar on the 26th. We had fine
moderate weather, and had a very fairly successful
week, sounding, trawling, dredging, and taking
temperatures, between Gibraltar and Madeira.
The trawl was again employed successfully on
the 28tb, at a depth of 1,090 fathoms, about 90
miles to the south-east of Cape St. Vincent. Several
fishes occurred, including an example of Macrurus
atlanticus, and a fine specimen of the rare
Halosaurus ovjenii. The trawl on this occasion
contained a single example of the female of a very
large amphipod crustacean, briefly described under
the name of Cystosoma neptuni hy Guerin-Meneville
from a single specimen obtained in tbe Indian
Ocean. We have since taken several specimens at
different stations in tbe Atlantic; and as a small male
was in one ease captured in the towing-het, there can
be little doubt that, like Bhronima, to which genus
it is allied, Cystosoma is a pelagic animal, probably
retiring during the day to a considerable depth, but
occasionally coming to the very surface of the water.
K