old and new Amphipoda. 209 
of feathered sete on its hind margin. The armature of the 
succeeding joints is nearly the same as in the third pair, but 
the sixth joint is straight instead of curved, and not twisted 
round, 
Lifth Pereopods.—There is little doubt that these exceed in 
length the preceding pair, but none were found actually 
attached to the specimens. 
Pleopods.—TVhese carry two slender coupling spines on the 
peduncle and two cleft spines on the inner ramus. Hach 
ramus has ten joints, but nevertheless the outer ramus is con- 
siderably shorter than the inner. 
Uropods.—In the first two pairs the outer ramus is shorter 
than the inner ;’ in the third pair there is no sensible difference 
in the length. 
Telson.—The length and breadth are about equal. The 
apex is rounded, projecting a little beyond the usual pair of 
lateral processes, each of which is accompanied by a couple of 
sete or slender spines. 
The length of the animal, without the antenne, is about 
three-twentieths of an inch, or 4 millim. 
The specific name refers to the very distinctive feature that 
here the second pereopod of the male has the same hirsute 
adornment as the first perwopod. In this respect it differs 
from all species of the genus hitherto described. 
For the locality see the remarks on the next species, the 
specimens of which were mixed up with those of Lembos 
hirsutipes. 
LEMBOIDES, gen. nov. 
As in Lembos, the first gnathopod has neither the fourth 
nor the fifth joint produced to meet the finger, but the fifth 
joint is much broader and longer than the sixth, and the finger 
does not overlap the palm. ‘The secondary appendage of the 
upper antenne is shorter than the third joint of the peduncle. 
The mouth-organs, perseopods, uropods, and telson are in 
general agreement with those of Aora, Microdeutopus, and 
Lembos, and, as in those genera, the gnathopods of the female 
differ much from those of the male. In the type species the 
third uropods, as well as the first and second, have the outer 
ramus shorter than the inner. It is at present doubtful 
whether this circumstance can usefully be included in the 
generic character. 
Lemboides afer, sp.n. (Pls. IX. A. & X.) 
The first side-plates in the male are longer than any of the 
