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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 setae. 

 MALE. It is of medium size compared with the female (fig. 2b : fig. 2a); a good- 

 sized specimen is '28 mm. long and - 22 mm. broad. Seen from below, its broadest dimension 

 appears far towards the front, off the maxillae, 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. Antennulae 3-jointed, scarcely of medium length, with tolerably short 

 setae. Antennae wanting (fig. 2f). The mouth-border provided with long hairs, considerably 

 longer than in the female. Maxillae 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 maxillae 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 straight er 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 pah- 

 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 



