450 On two new Gammarids from New Zealand. 
setose. Flagellum broken off. Secondary flagellum four- 
jointed, about as long as the fifth joint of the peduncle. 
Second antenne with only one joint of the peduncle left, as 
long as and somewhat stouter than the third joint of the first 
pair, and bearing a few slender sete, especially at the lower 
extremity. 
Mandibles stout, with the basal portion subtriangular in 
form, ?¢ght with its molar tubercle in the form of a hollow 
crown, toothed all round the edge and with a few small sete ; 
cutting-edge, which with the tubercle is directed forwards, 
furnished with a row of five spines, very closely set, but not 
clearly made out; secondary plate strongly developed and 
ending in two large teeth. Left with two strong protu- 
berances on the secondary plate. Pulp slender, three-jointed ; 
first joint very short, second and third subequal, the former 
with a row of about six or seven short sete on the lower 
edge, the latter ending in a number of long sete and with a 
tuft of two or three on its upper edge a little distance from 
the extremity. (The other organs were very small and 
fragile, and were unfortunately mutilated in dissection.) 
First gnathopods small; carpos narrow-oblong, dilating 
outwards to the distal end, fringed on its lower margin with 
three or four bunches of sete ; propodos with three groups of 
dorsal sete placed transversely and a tuft of sete at the 
articulation of the dactylos, lower margin with sete sparingly 
scattered along its edge; palm oblique and not well-defined ; 
dactylos slightly more than half as long as the propodos, 
slender, slightly curved. 
Second gnathopods abnormally developed, nearly half as 
long as the whole body ; basos long and somewhat curved, 
especially on the posterior margin ; ischium quadrilateral, as 
broad as and about one third as long as basos; meros small, 
triangular, with its lower side greatly produced into an acute 
lobe, bearing a few sete near its extremity ; carpos very 
much broader than long, also produced into a narrow trian- 
gular prolongation, which extends as far as that of the meros 
and bears one or two sete ;_ propodos about equalling in length 
all the rest of the limb, widening to the distal end, which is 
about half as broad as the length of the joint; dorsal surface 
smooth and curved, ventral straighter, ending in a strong 
tooth and with a few sete near the extremity, distal end 
transverse, with a deep hollow inside the inner tooth, then 
having a small irregular tooth near the middle which bears a 
few sete, and a slight protuberance at the hinge of the 
dactylos ; the latter joint very long and falcate, with its inner 
edge nearly straight for the first half of its length, then 
sickle-shaped, its extremity reaching to the prolongations of 
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