and. South-American Crustacea. 447 
float.” He took them between the Bay of Bengal and the 
Cape of Good Hope. The specimen from which Dana de- 
scribed the species was “‘ taken in the Antarctic seas south of 
New Holland.” 
_ IV. Munida.—Probably same as VI. 
V. Hyperia.—Having received several specimens of these 
from Dr. Cunningham, I have been enabled to identify them 
as being Themisto antarctica of Dana. 
VI. (Plate X XI. fig. 2)—Judging by Dr. Cunningham’s 
drawing, I think that these must be the young of G‘alathea 
monodon of Milne-Edwards, of which the Munida (Galathea) 
alluded to in No. IV. as being captured in the Strait was a 
stray specimen. 
| VI. Uca Cunninghami (P|. X XI. fig.3).—The development 
of the land-crabs, of which this is one, has been carefully 
worked out and figured, in the ‘Transactions of the Royal 
Society,’ by Prof. Westwood. I know this species only by 
Dr. Cunningham’s figure, and place it in the genus Uca rather 
than in that of Gecarcinus, because there are no teeth or spines 
on the legs. ‘The two genera, as well as those of Cardisoma 
and Gecarcoidea, are distinguished from each other by the 
different form of the gnathopoda, which, not being shown 
in Dr. Cunningham’s drawing, I cannot appeal to. But since 
the species of the several genera described by M. Milne- 
Edwards are distinguished by having rows of spines or teeth 
on the walking-legs, I think it more probable that this species 
may be more closely allied, through the form of the oral ap- 
paratus, with Uca than with either of the others. 
_ Female. Carapace circularly oval; lateral margins not con- 
verging until over the penultimate pereiopod, then sud- 
denly narrowing to about one-third of the broadest dia- 
meter of the carapace; anterior or intraorbital margin 
smooth and continuously emarginate ; latero-frontal mar- 
ah rounded, not defined, furnished with two short teeth 
ormed rather by depressions than dental elevations. 
Orbits broad, and not deeply impressed in the carapace. 
Antenne short. First pair of pereiopoda chelate, un- 
equal, right the larger ; chele strong, having the internal 
margin of digital process of the propodos straight, taper- 
ing, and armed with four or five strong tubercles ; fac: 
os curved, tapering, and armed with one or two small 
tubercles. The rest of the pereiopoda are subequal in 
length, the last being somewhat the shortest, and have 
the tarsi smooth and unarmed. The pleon has none of 
the segments fused. The telson is narrower at the base 
than the preceding segment. 
