92 
GAMMARIDiE. 
The eyes are small and oval ; they appear smaller 
than they really are, for the black pigment is only 
visible in the centre of the organ, the several lenses 
forming an areola round the central spot. The superior 
antennae are short. The first joint of the peduncle is 
as long as the head, and has the upper margin produced 
anteriorly so far that it reaches to the extremity of the 
third joint. The second and third joints are short and 
small, and gradually taper to the extremity of the 
flagellum, which consists of but two or three articulL 
We have not observed the secondary appendage. The 
inferior antennas are long, longer than the entire ani- 
mal, and very slender. They bear a considerable re- 
semblance to the same organ in Lysianassa longicornis . 
The third and fourth joints of the peduncle are short, 
being as broad as long ; the fifth or last joint is very 
long, hollowed upon the under side near the base, 
swelled near the middle, and gradually tapering to the 
distal extremity ; the flagellum is very slender and long, 
and is formed of articuli which are long and slender, 
every articulus being furnished with a calceola — a fact, 
which, if Stimpson be correct, shows that our specimen 
is a male animal. The first pair of legs are long and 
slender, having the wrist longer than the hand, and the 
under margin parallel with the upper ; the hand is not 
broader than the wrist, and also has the under margin 
parallel with the upper, the palm is short, oblique, and 
concave. The second pair of legs are long, slender, and 
membranaceous ; the wrist is longer than the hand ; the 
hand has the infero-anterior angle produced to a blunt 
point beyond the palm, equal to the length of the 
finger, which is very short, and therefore approximates 
nearly to a didactyle claw. The first two pairs of 
walking legs are slender. The last three have the 
