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longer than wide ; it is produced distally into a short tridentate 
thumb, between the two inner and less produced teeth of 
which there fits a tooth on the inner margin of the chopper- 
shaped movable finger; this joint has its widened distal end 
prolonged beyond the thumb, to which it presents a reflexed, 
more or less acute, apical point. 
The third, fourth and fifth peraeopods are alike in structure, 
and little differing in length, the fourth a little shorter than 
the third, a little longer than the fifth; they are all stouter 
than the first pair and the slender member of the second 
peraeopods ; the fourth joint is the longest, the sixth slightly 
curved and a little longer than the fifth ; the finger very small, 
curved, finely setulose. 
The first pleopods in the male have the inner ramus a short 
oval fringed except on part of the imner margin with long 
sete, but from the inner margin there is partially separated 
a retinaculum, beset with little curved spines, and having 
at its lower end a close group of the usual hooks. The outer 
ramus is more than twice as long as the inner, lanceolate. 
In the female both rami are lanceolate, the inner more than 
half as long as the outer, with the eggs tenaciously adherent. 
In the second pleopods the male has the retinaculum separated 
in the usual way, and another appendage of equal length 
between it and the main ramus, which is normally developed. 
Both these pairs closely approach the description and figures 
given by Paulson for the corresponding parts of his Anchis- 
tuoides compressus. 
The uropods reach to a very trifling degree beyond the apex 
of the telson. Both rami are round-ended, the inner the 
narrower, fringed with plumose sete on both margins; the 
oute ramus is similarly fringed on the inner margin and round 
its apical division. The upper division from the boundary 
tooth upwards has a long piece of the outer margin cut into 
teeth, in striking agreement with the armature of the scale in the 
lower antennae, here as so often elsewhere the two extremities of 
the animal showing a correspondence in development. 
The length of the male specimen figured was 46 mm., from 
apex of rostrum to apex of telson. 
Halitat.—The place of capture was 25 miles off Lion’s Head, 
N. 67° E.; depth, between 131 and 136 fathoms. 
The specific name is given out of respect to the Russian 
naturalist Paulson, and to call attention to his probably 
little known genus Anchistioides, with which the present shows 
some rather remarkable points of connection. 
