102 
GAMMARlDiE. 
antennae are scarcely longer than the head ; the first joint 
of the peduncle is long, nearly as broad at the distal ex- 
tremity as at the centre, and superiorly it considerably 
overlaps the second joint ; the second joint is short, but 
not much narrower than the first, it also considerably 
overlaps the third ; the third joint is very short, but longer 
on the internal upper margin than at the lower: the 
first artic.ulus of the flagellum is as long as the peduncle, 
and is furnished upon the inner surface with two longi- 
tudinal series of rows of minute hairs ; the rest of the 
artieuli, about thirteen in number, are as broad as long, 
and inferiorly furnished upon the inner surface of each 
with three hairs. The secondary appendage is short, not 
being longer than the first articulus of the flagellum ; it 
consists of three artieuli, the first long, the other two 
short. The inferior antennae are rather more than half 
the length of the animal; the last joint of the peduncle 
extends quite to the distal extremity of the first articulus 
of the flagellum of the superior antennae ; the flagellum 
is long and slender, and reaches to half the length of the 
animal. The epistoma is not very prominent. The 
mandibles have both extremities of the incisive edge 
produced beyond the intermediate blade ; the molar 
tubercle is furnished with a few short obtuse spines. 
The appendage is long, with the second joint longer 
than the third. The first pair of legs are long and 
slender ; they have the wrist and hand subequal in 
length, the wrist being rather broader than the hand ; 
it has the margins parallel, and terminates abruptly ; the 
hand has the margins parallel, the palm is oblique, con- 
vex, being formed by the apical margin gradually round- 
ing into the inferior ; it is minutely pectinated through 
its entire surface, and is defined only by the cessation of 
the small teeth ; the finger is long, slender, and slightly 
