154 
not very far apart, and their hindmost extremity pretty close to the posterior margin of 
the plate; the plate is naked but for very few hairs between the anterior part of the genital 
apertures. The caudal stylets, situated close together and near the posterior margin of the 
plate, are very peculiar: each stylet consisting of a rather short, but thick joint, on the 
inner posterior angle of which is articulated a »joint« twice as long, but scarcely half as thick, 
which must be explained as a transformed seta, outside which are seen one or two simple sete. 
MALE. It is of medium size compared with the female (fig. 2b: fig. 2a); a good- 
sized specimen is 28mm. long and ‘22 mm. broad. Seen from below, its broadest dimension 
appears far towards the front, off the maxilla, and seen laterally, it is unusually thick. 
The head — considered as extending to the limit of the hair-covered part — is considerably 
smaller than the trunk (fig.2h). The frontal border but slightly produced; it has five inci- 
sions, and six small lobes (fig. 2g), each of which is twice as broad as one of the lateral 
incisions, and their slightly curved terminal margin is furnished with a row of fine, 
spine-shaped processes. Antennule 3-jointed, scarcely of medium length, with tolerably short 
sete. Antenne wanting (fig. 2f). The mouth-border provided with long hairs, considerably 
longer than in the female. Maxille of medium size, their basal joint bearing some normal 
hairs at the margin of the distal connecting membrane, second and third joints scarcely 
separated from each other. Basal joint of the maxillipeds rather long, at its base a small 
area with minute prickles, and at its distal end a few hairs; the other joints as in the 
female. The sub-median skeleton possesses the two first pairs of processes; the first pair 
are removed further backward than usual, and a little overlapping the base of the maxilli- 
peds, they appear as pretty good-sized, somewhat protuberant, thick cones; the second pair 
are all but rudimentary. The ear-shaped stripe surrounding the base of the antennula is 
provided with long hairs, the short lateral margin of the head with moderately long hairs, 
and from its posterior extremity to off, or a litte behind, the base of the maxilla the anterior 
limit of the hair-covered part runs obliquely forward and upward along the side of the 
animal (fig.2h), then curves very slightly and continues in a straighter line across the back; 
the result is that the naked part of the body becomes unusually small, compared with the 
remainder. The median part of the ventral side of the trunk, in front of the caudal stylets, 
has an extremely close covering of fine hairs of medium length; the remainder of the ventral 
surface, as well as the sides and the back up to the boundary of the hair-coat are closely 
covered all over with pretty coarse, tolerably long, or long hairs, and each of these proceeds 
from a distinct little knot; rather frequently, though by no means always, the long hair 
seems to proceed from the centre, and a much shorter one from each end of such a knot, 
but the denseness of the covering renders a close examination exceedingly difficult and 
uncertain. The first pair of trunk-legs consist of a relatively small basal part, from which 
proceeds a single, short, almost cylindrical branch without terminal seta. The second pair 
are so small and so much hidden in the dense hair-coat, that I have been unable to discern 
with certainty more than a single tap, which is shorter than the surrounding hairs. The 
