exotic Sessile-eyed Crustaceans. 185 
antepenultimate—the former being more slender than the latter, 
but in length subequal both to it and to the second joint of 
the upper antenne. The flagellum of the upper antenne is 
longer and stouter than that of the lower. 
In the first and second gnathopods the wrists and hands 
are hairy ; the wrist in each case is about equal in length to 
the hand. The hand in the first gnathopods is subovate in 
shape, with no distinct palm, and the finger projecting rather 
prominently. In the second gnathopods the hand is rather 
larger, with a fairly defined palm, upon which the finger folds 
down without overlapping it. In the five following pairs of 
legs (the pereiopoda) the fingers are all directed backwards, 
a character which Mr. Spence Bate notes as generally pre- 
vailing in the genus Dewamine. It is these five pairs of 
pereiopoda which are the most peculiar and distinctive parts 
of the animal. They are all alike, with the exception of the 
coxal joints; and as far as could be made out, they are all 
equal. The thighs are well developed both in breadth and 
length. The metacarpal joints are also long, about equalling 
the wrist and hand conjointly. Long spines are attached to 
the postero-distal extremity of the wrist. The hands are 
prehensile, a much-curved finger being opposed to the outer 
point of an excavated palm. In the actual state of the spe- 
cimens it was not, however, possible to decide whether the 
palm terminated in two points with a central spine, or in one 
point with a spine on either side. ‘There seemed to be an 
additional spine within the palm close to the base of the 
finger. The telson is long, lanceolate, and deeply cleft. The 
coxal joints are figured as they appeared ; but those of the 
first three pairs of pereiopoda were not well preserved, and 
ina normal state are probably less irregular in shape than 
those which I have drawn. 
The specimens have a very noticeable metallic lustre. 
Unless a new genus should be thought wanting, on account 
of the prehensile feet of the pereiopoda, Dexamine antarctica 
will be an appropriate name for this minute novelty. 
If. The next species to be described, also minute and also 
new, comes from Algoa Bay, South Africa. It travelled to 
England with the same collection of sponges and Gorgonias 
which supplied the Arcturide described in the ‘Annals’ for 
August 1873. There can be little doubt that it ought to be 
referred to the genus Seba, founded by Costa fora Neapolitan 
species, which Mr. Spence Bate has described and figured in 
his British-Museum Catalogue, stating that “ the descriptions 
ot both the genus and species, as well as the figure, are taken 
