1864.] MR. C, SPENCE BATE ON NEW CRUSTACEANS. 667 
base, and furnished with seven small teeth, the four posterior being 
near together and posterior to the centre of the rostrum, the three 
others being further apart, the most anterior being subapical. 
The third segment of the pleon is dorsally produced posteriorly to 
a point. The eyesare small; the superior antennze have the primary 
ramus of the flagellum tolerably robust, and reaching to about two- 
thirds the length of the rostrum, the secondary slender and longer 
than the primary. The inferior antennz have the scale reaching to 
about three-fourths of the length of the rostrum, rounded at the apex, 
subapically furnished with a small tooth upon the external margin ; 
the flagellum (wanting). 
First pair of pereiopoda short, robust, chelate ; second pair long, 
slender, and chelate; the posterior terminating in a robust dactylos. 
Taken in Esquimalt Harbour. 
MaRaA FUSCA, 0. 8. 
The body is long and slender ; the superior antennz are about half 
the length of the animal, the peduncle being scarcely longer than the 
flagellum, the secondary appendage being half the length of the pri- 
mary, the second joint of the peduncle being about the same length 
as the first. Second pair of gnathopoda having the propodos large ; 
palm without teeth, and defined by a small pointed process. Poste- 
rior pair of pereiopoda having the posterior margin of the base 
smooth. 
In its general appearance this species bears a near affinity to Mera 
grossimana, as well as to M. tenella, from the Feejee Islands, the 
only appreciable distinctions being in the shorter length of the second 
joint of the antenne, the absence of teeth from the palm of the hand 
in the second pair of gnathopoda, and in the even margin of the last 
(the only remaining) pair of pereiopoda, and perhaps also in the short- 
ness of the peduncle of the ultimate pair of pleopoda. 
Only one specimen of this species is in the collection ; and that was 
taken from a sponge dredged in about ten fathoms of water in Esqui- 
malt Harbour. It is of a brownish colour. 
J@RA WAKISHIANA, 0. 8. 
Anterior margin of the cephalon nearly straight ; pereion having 
the sides subparallel, the greatest width being at the sixth segment. 
Pleon having a double excavation on the posterior margin, the central 
point not extending beyond the extremity of the sides. Superior 
antenne reaching to the extremity of the fourth segment of the in- 
ferior. Inferior antenne nearly two-thirds the length of the animal. 
Posterior pair of pleopoda as long as the posterior margin of the 
pleon, terminating in two styliform rami, each of which is tipped with 
a few short hairs. 
This species was taken from a sponge dredged in about eight 
fathoms of water in Esquimalt Harbour. 
The specific name is derived from the circumstance of the animal 
having been found on the territory of the tribe of Wakish Indians. 
