558 DR THOMAS SCOTT ON THE 
the end joint of the inner ramus carries three setee on the inner margin, two at the 
apex and a tolerable stout spine at the outer distal angle; but in the fourth pair, the 
same end joint is furnished with only two setze on the inner margin (see figs. 20 and 21). 
In the fifth pair, which are comparatively small, the basal joint is moderately 
expanded interiorly and provided with five elongated and rather slender plumose sete 
on the broadly rounded distal end; the second joint is small, oblong in form, and 
about twice as long as wide; the inner margin is nearly straight, but the outer is 
slightly rounded and fringed with minute setze; it is also provided with six plumose 
setze round the distal end, as shown in the drawing (fig. 22). 
Habitat.—Scotia Bay, South Orkneys; collected in June 1903; Station 325, 
60 AS) 42S 4438 3 Ne 
Remarks.—This species has a slight resemblance to the Dactylopusia antarctica of 
Giesbrecht, from the Belgian Antarctic Expedition, but it differs distinctly from it in 
the structure of the antennules and of the fifth pair of thoracic legs. Named in 
compliment to Mr James G. Ferrier, a member of Committee and Secretary to the 
Expedition. 
Dactylopusia perplexa, new species. (PI. II. figs. 26-30; Pl. VI. figs. 1 and 2.) 
Female.—Body moderately stout. Length, 0°8 mm. 
Antennules short, robust, and composed of nine joints, the first four of which are 
moderately large, and the second, third, and fourth are each rather shorter than the 
preceding one; the next two joints and the last joint are nearly equal in size, and are 
each fully half as long as the fourth; the seventh and eighth are also nearly equal, but 
they are shorter than any of the others. 
Antenne stout ; outer ramus three-jointed and of moderate length ; mandibles with 
the distal end somewhat attenuated ; mandible-palp small and two-branched. 
The second maxillipeds are short and rather robust, and they are provided with short 
but moderately stout terminal claws, 
The first pair of thoracic legs are short and stout, and the rami are nearly of equal 
length ; the outer ramus, which is slightly shorter than the other, is armed with short, 
stout terminal claws ; in the outer ramus, the middle joint is about twice as long as the 
preceding one, but the end joint is small and is provided with tolerably stout terminal 
claws. ‘The next three pairs are all moderately stout, with short margin spines on the 
outer rami. 
The fifth pair are short, and both segments are somewhat expanded; the inner 
portion of the basal segment, which reaches to about the middle of the second, bears 
five setze on its broadly rounded end; the two inner sete are short and tolerably stout ; 
the two outer are more slender and are close together, but the middle one, which is 
also stout, is moderately elongated. The second segment is broadly ovate, the greatest 
width being equal to about three-fourths of the length; this segment is furnished with 
three short setse on the lower half of the outer margin, one on the inner margin, and 
