130 



MALE. The only specimen is '19 mm. in length and a trifle narrower; compared 

 with the female represented, it is tolerably large (fig. 3 b : fig. 3 a), but only of medium size 

 compared with the largest female. Seen from below (fig. 3f), the body is nearly pentagonal; 

 the anterior outline, which only in its middle part is formed by the slightly curving frontal 

 margin, but towards the sides of parts belonging to a lower level, is but feebly curved and 

 comparatively broad, the lateral angles are obtuse, but the posterior margin of the body 

 forms a rather broad curve. The head is somewhat larger than the trunk. The afore- 

 mentioned, scarcely produced frontal border has a fringe of hairs. The antennulse are slender, 

 of medium length and provided with long setae. The antennae and the maxillula? much as in 

 the female; the mouth smaller than in the latter. The maxillae have a distinct conical 

 process on the posterior side of the basal joint. The basal joint of the maxillipeds has a 

 sinuate inner margin, its outer surface is supplied with hairs, and its anterior side has two 

 transverse rows of tolerably long hairs; the last joint ends in three points of unequal length. 

 In the sub-median skeleton are only found the two first pairs of processes; the first pair 

 which are situated behind the maxillae, are broad, somewhat produced and rounded, the 

 second pair which are situated between the maxillipeds, are scarcely of medium length and 

 feebly diverging. The lateral margin of the head fringed with long hairs, and the ear- 

 shaped arch round the base of the antennulae distinguishes itself particularly by its very 

 long hairs. The stripe of hairs which proceeds from near the posterior angle of the lateral 

 margin, running upward across the side and the back, is somewhat more oblique than in 

 S. HolbdlU, and its hairs are somewhat shorter, otherwise the hair-covering of the trunk and 

 its dorsal, naked transverse area are much as in this species, and the same resemblance 

 appears in the empty spaces beneath the skin of the head. The first pair of legs consist of 

 a very broad and rather long, hairy basal part, from which proceeds a single moderatery 

 long branch, which terminates in a single seta of the length of the whole leg or of the first 

 joint of the maxillipeds. The second pair of legs entirely like those of the former species, 

 the only terminal seta of the inner branch about the length of that of the first pair of legs. 

 The very thick caudal stylets have a terminal seta which is scarcely as long as that of the 

 second pair of legs. 



OVISACS. They differ very much in size, even if not containing larvae. Of ten 

 ovisacs belonging to the same female the smallest one is globular and has a diameter of 

 •30 mm., the largest (represented in fig. 3 c), is -53 mm. long and -43 mm. broad. In another 

 female was found a still larger ovisac which is -64 mm. in length and "49 mm. in breadth. 

 So these ovisacs are large compared with the females, and the eggs themselves are large 

 and not numerous. 



LARVA. I have found two ovisacs containing larvae which were serviceable, yet 

 not quite capable of swimming away, and these specimens have served as models for fig. 3h. 

 A list curving somewhat like an S is seen inside the anterior angle of the antennula. The 

 olfactory seta of the 2-jointed antennula? is long, a little shorter than the cephalothorax. 



