Hab. Torres Straits, Sir C. Hardy’s Island. Type. B.M.
The true position of the genus Cymopolia is very doubtful.
M. Milne-Edwd., in the Hist. Nat. Crust., considered
it as intermediate between the DoHppidae and U-apsidae,
•but the square buccal opening (which however is im-
jievfectly closed in front) is very different from th a t of the
Oxyslomata, to which the Dorippidae belong. I t has a great
external resemblance to the (h-apsidce, and, I think, should
constitute a distinct group among the Anomoura Grapsidica
in Dana’s arrangement, although the articulation of the
fourth joint of the outer niaxiUipeds is Maioid and not
Grnpsoid in character, as De Haan has shown (Faun,
.iapon., p. 113) on which account Dana placed the genus
with tlie Bromiadae among the Anomoxira Maioidea, hut
he had not seen any specimens.
D e c a p o d a M a c r o u r a .
Sub-tribe T i i a l a s s i n i d e a , Dana.
V.S. Explor. Exped. XIIL, Crust. l.,p . 500 (1852).
Genus Gebia, Leach.
Malac. Pod. Brit., tab. XXXI (1815).
G e b i a i i i r t i f r o n s . Tab. 3 , fig. 5 , ba.
Gebia birtifrons, IVJiite, Proc. Zool. Soc., p. 122 (1847):
List Crust. Brit. Jifus., p. 71 (1847); A. and M. N. H. {ser.
2) I., p. 225 (1848).
Hab. South Seas.
Sub-tribe A s t a c i d e a , Dana.
U.S. Explor. Exped. X IIL, Crust. I., p. 501 (1852).
Genus P a r a n e p h r o p s , White.
Gray, Zool. Miscdl. II., p. 79 (1842).
P a r a n e p h r o p s p l a n i f r o n s . Tab. Z,fig. 1.
Paranephrops planifrons. White, Gray, Zool. Miscell.
II.,;?. 79 Bieffenb., New Zeal. IL, _p. 267 (1843);
List Crust. Brit. Mus., p. 72 (1847).
Paranephrops tenuicornis, Bana, U.S. E:cplor. Exped.
XIII., Cmst. I.,p . bTJ,pl. 3 3 ,/. 4 (1852).
Hab. New Zealand. Type. B.M.
There is a specimen named P. tenuicornis in the British
Museum, from New Zealand, presented by the Smithsonian
Institution, Washington, which appears to have been
wrongly determined, for the rostrum is three-toothed on
each side as in P. planifrons, whereas P. tenuico'i'nis is
described and figm-ed by Dana as having four teeth on
each side of the rostrum.
I have no doubt, however, th at P. tenuicornis is identical
with P. planifrons, or a t most only a variety of it, for the
number of teeth on the sides of the rostrum is liable to
variation in the latter species, there being sometimes three
on one side and four on the other, in the same specimen.
P a r a n e p h r o p s z e l a n d ic u s .
Astacus Zealandicus, White, Proc. Zool. Soc., p. 123
(1847); List Crust. Brit. Mus., p. 72 (1847); A . and M.
N H. {ser. 2) I„ p. 223 (1848); Zool. Erebus and Tm'or,
tab. 2 , / 2 (1874).
Hab. New Zeidand. Type. B.M.
This species must be referred to Paranephrops. The
antennary scales are not so much developed and the arms
are not so elongated as in P. planifrons, but the hands are
covered with spines, like those of the other species of the
genus, and are very different from tlie smooth hands of
Potamobivs (Astaeus), all the species of which inhabit the
northern hemisphere. Moreover the supplementaiy abdominal
legs which are characteristic of the males of
Potamobius and some other genera, are absent in this, as
v^ell as in the other species of Paranephrops, in the British
Museum.
Sub-tribe C a e i d e a , Dana.
U.S. Explor. Exped. XIIL, Crust. I., p. 501 (1852).
Genus A l o p e , White.
Proc. Zool. Soc., p. 123 (1847) ; List Ci-ust. Brit. Mus., p.
75 (1847); A . and M. N .H . {ser. 2) I.,;?. 225 (1848).
A l o p e p a l p a l i s . Tab. 4., fig. 1.
Alope palpalis. White, Proc. Zool. Soc., p. 124 (1847);
List Crust. Brit. Mus., p. 75 (1847); A . and M. N. H.
{ser. 2) L, p. 226 (1848).
Hah. New Zealand. Type. B.M.
A l p h e u s , Fabricius.
Ent. Syst. SuppL, p. 404 (1798); Milne-Edwd. Hist. Nat.
Crust. II.,p. 349 {partfi, Bana, U.S. Explor. Exped. X lll.,
Crust. I.,;?. 534.
* Beak linear, rising from front margin of carapace.
(Inferior margin of larger hand notched at base of finger.
Orbits over eyes entire. Fingers of smaller hand not
longer th an the hand itself.)
A l p h e u s e d w a r d s i i .
Alpheus Neptuniis, White, List Crust. Brit. Mus., p. 74
(1847); Zool. Erebus and Terror, tab. 4 , / 3 (1874).
Athanasus Edwardsii, Audouin, in Savigny Bescr. de
I’Egypte, pi. 10, / 1 ; not Alpheus Edwardsii. Milne-Edwd.,
Hist. Nat. Crust. 11., p. 352; Bana, U.S. Explor. Exped.
XIIL, Crust. I., p. 542,;?. 3 4 , / 2.
Carapace more inflated than in Alpheus stremius.
Hand larger, similar to th at of A. strenuus, hut the
fingers are narrower compared with the palm. The first
joint of the carpus of the second pair of legs is longer than
the second, the second joint longer than either the third or
fourth and about as long as the fifth joint. The smaller
hand is wanting.
, The Alpheus Neptunus described by Dana, U.S. Explor.
Exped. XIIL Crust. I., p. 553, pi. 35, f. 5, has a threespined
front, like that of Alpheus minus, Say, and has
nothing to do with the Alpheus Neptunus of White.
Hab. Port Essiugton. B.M.
A l p h e u s s t r e n u u s .
Alpheus Doris, White, List Crust. Brit. M^ís., p. 75
(1847); Zool. Erebus and Terror, tab. 4 , / 2 (1874).
Alpheus Rhode, White, List Crust. Brit. Mus.,p. 75 (1874).
Alpheus strenuus, Bana, U.S. Explor. Exped. XIIL,
Crust. I., p. 545. pi. 3 4 , / 2 (1852).
Larger hand hairy, especially towards the fingers, with a
longitudinal groove above on the inner surface close to the
upper margin and an oblique groove on the outer surface
of the palm. Smaller hand opening nearly horizontally,
the outer (moveable) finger flattened, with an oblique ridge
a t its ba^e on the outer surface, the margins thickly ciliated.
The two first joints of the carpus of the second pair of legs
equal in length and each longer than either of the three
following joints.
Hah. Philippine Islands. Torres Straits. B.M.
A l p h e u s g a l a t h e a . Tab, 4, fig. 4.
Alpheus Galathea, White, List Crust. Brit. Mus., p . ’lb
Hab. Port Essington. Type. B.M.
A l p h e u s a l o p e . Tab. 4, fig. 6 .
Alpheus Alope, White, List Crust. Brit. Mus.,p. 75 (1847).
Hab. Austraha, Port Stephen. Type. B.M.
The types of Alpheus galathea and Alpheus alope in the
British Museum belong to this section of the genus, but are
in too bad a condition to be distinctively characterised.
** Beak triangular, rising behind the front margin of the
carapace. (Orbits witli spines over the eyes.)
A l p h e u s d o t o . Tab. 4, fig. 5.
Alpheus Doto, White, List Crust. Brit. Mvs.,p. 75 (1847).
Rostrum narrow, triangular, scarcely pi-oJecti)ig beyond
the front of the carapace. Upper margins of the orbits
with a minute spine. Hands (in the figure, the left hand
is now wanting in the type) similar, tlie left the smallest.
Right hand smooth, with scattered yellowish hairs, the
lower margin straight entire, the upper convex. Fingers
very small. The first joint of the carjjus of the second
pair of legs longer than the second, the second joint about
as long as the third and fourth together.
Hab. Sir C. Hardy’s Island. Type. B.M.
A l p h e u s t h e t i s . Tab. 4, fig. 7.
Alpheus Thetis, White, List Crust. Brit. Mas., p. 75
Hab. New Holland. Type. B.M.
The specimens of this species in tlie British Museum
are in too imperfect a condition to be well distinguished
from other species of the same section of the genus. The
hands are wanting. The beak projects beyond the front
margin of the carapace; the first joint of the carpus of the
second pair of legs is longer than any of the succeeding.
In these respects A . thetis resembles the Alpheus lacvis,
Randall, Journ. Acad. Nat, Sci. Philad, VIIL, p. 141,
figured by Dana, U.S. Explor. Exped. Crust, pi. 35, fig, 8,
with which it may be identical.