18 T. V. HODGSON. 
The first segment of the mesosome is a little longer than the next two, and about 
as long as the last; it partially encloses the cephalosome up to the level of the eyes, 
but owing to foreshortening this is not noticeable in the figure. Its epimera are not 
distinctly separated off from it, and they are pointed posteriorly. The fifth and sixth 
segments are longest and widest. The epimera of all but the first are distinct, their 
external margins are curved, and they are pointed posteriorly. The entire mesosome 
is covered irregularly with minute punctures, not readily seen while the body is wet. 
The metasome is a little narrower, and only five distinct segments are visible from the 
dorsum, the sixth being fused with the telson, which is rather short and broad, its 
margins slightly curved to a blunt point, the structure being strengthened by a 
poorly-developed median keel. The margin is finely serrated, and each “ tooth” 
of the serration is accompanied by a spine; the whole border is fringed with small 
plumose sete. 
The uropoda are large, and project but little beyond the telson. The protopodite 
is short and stout, having its inner border prolonged in a scythe-like manner as far as 
the inner angle of the endopodite. The exopodite is narrow, lanceolate, both sides of 
the distal half bear stout spines at regular intervals, and there is one at the extremity ; 
almost the entire margin is fringed with short plumose sete. 
The endopodite is broader, more leaf-like in shape; it projects to the same 
distance. The internal margin is serrated, each serration being accompanied by a 
small but stout spine. These latter are also to be found on the inner margin. All the 
outer and most of the inner part is fringed with long plumose sete. 
The first antenna has a peduncle of three joints, none of which are dilated; the 
first is stout and lies at a right angle to the axis of the body, the second joint is 
shorter, and the third, which is comparatively slender, is three-quarters of the length 
of the preceding two together. The flagellum is multi-articulate and not very long. 
The second antenna has a peduncle of five joints; the first is very short and 
stout, the second is shorter, the other three progressively increase in length, the last 
being scarcely as long as the two preceding ones. The flagellum is multi-articulate 
and half as long again as the peduncle. 
The mandible is stout. The mandibular palp is three-jointed; the middle 
joint is the longest, and the terminal one the shortest. The inner border of 
the second joint bears a group of sete near its distal extremity. These sete 
are very finely toothed along the distal halves or thereabouts. The distal joint 
has the external margin rounded ; it is fringed with stiff setee on its straight inner 
border. These gradually increase in length towards the extremity of the joint, and 
under a high power they are seen to be flattened and slightly expanded at their 
extremities. At the extremity of the joint are three or four very much longer sete 
armed with delicate teeth, as on the preceding joint. 
The second maxilla (fig. 2) is a single elongated joint, rather expanded at the 
base ; its inner margin is straight, and at about two-thirds of its length there is a 
