36 STALK- AND SESSILE-EYED CRUSTACEA 
very slender, unarmed and naked, except a few hairs at tips of joints. 
Two of the flagella of the inner antenne united to eighth or ninth 
joint. Outer maxillipeds short, about reaching to apex of base of 
outer antenne. Hxtremity of abdomen very narrow, having three 
minute spinules, and between them two longish sete. Colour nearly 
pellucid, with some bright green lines of extreme delicacy along the 
carapace and the abdomen ; four posterior legs with two red spots, 
one at either extremity of the femur, second pair with three red 
spots, one in either hand at the base of the fingers. Length about 
Zin, (2.), 
New Zealand (Coll. Mus. Paris ; Brit. ; Dana). 
P. quoianus, M. Edwards, is described by him as follows :— 
Rostrum straight, robust, about as long as the scale of the external 
antenne, with six teeth above, and three below, not bifid at the ex- 
tremity, terminating in a single point, behind which are placed, one 
immediately above the other, the first tooth of the upper and of the 
lower series. Two spines on each side, on the front margin of the 
carapace. Second pair of legs short, cylindrical, slender, scarcely 
reaching beyond the lamellar appendages of the antenne ; hands as 
long as the wrist, scarcely swollen, fingers very short. Length about 
1 in. 
It will be seen from the above description, that P. quoianus is 
_principally characterized by its non-bifid rostrum, (which has only 
six teeth above and three below), and shorter hands. But the number 
of teeth varies slightly in a large series of specimens, while the bifid 
appearance is caused by the greater or less approximation of the 
anterior tooth of the upper series to the apex of the rostrum—also a 
variable character. The length of the hands of the second pair also 
depends greatly upon the age and sex of the specimen, and upon the 
whole, I am inclined to unite P. affinis and quoianus. This species seems 
to be very common in New Zealand, and is also found at the Falkland 
Islands, and Cape of Good Hope. 
92. Leander natator. 
Palemon natator, M. Edw. Hist. Nat. Crust. i, p. 393, (1837). 
Leander erraticus, Desm., Ann, Soc. Ent. France p. 8%, (1849). 
Rostrum about the length of the basal scale of the external antenne, 
narrow at base, but very wide at the end, almost lance shaped, with 
