180 



part of its posterior margin is nearly straight; it is seen from the dorsal side, the frontal 

 part of the head is turned backward, and the maxillipeds (g) forward; however, this 

 position is an anomaly, no doubt produced by pressure acting on its very soft skin in the 

 marsupium during its growth. — The head (fig. 1 a) without real lateral borders, and in 

 the adults, the part surrounding the mouth-appendages is irregularly folded up against these 

 appendages, or even overlapping the outer side of the maxillipeds. The antennulse (a) almost 

 rudimentary, as broad as long, 1-jointed, ending in several very short setae. Somewhat in 

 front of the antennulae are seen two taps (u), the nature of which is quite incomprehensible 

 to me (possibly cones of viscous substance secreted through the orifices of glands?). The 

 terminal margin of the basal joint of the maxillse is concave, rising at its posterior angle 

 into a broad, rather short process. The maxillipeds have no spine at the distal inner angle 

 of their penultimate joint. The lower side of the head naked all over. The list of the 

 genital apertures forms about two thirds of an oval ring. 



MALE. It is small in proportion to the female (fig. 3d : fig. 3b). The specimen repre- 

 sented in fig. 3h is •164 mm. long, the one drawn in fig. 3g, measures •174 mm. The body 

 is not flattened. Seen from below, the head nearly equals the trunk in length, but the 

 latter is somewhat thicker; seen sideways, the outline of the hair-coat runs from the base 

 of the maxillipeds somewhat obliquely backward up across the side and the back, so that 

 the dorsal line of the head becomes much longer than that of the trunk, and the short 

 conical processes (x) are placed a little in front of the hair-covering. Seen from below, the 

 lateral borders of the head converge from behind their centre up to a point in front of the 

 base of the antennulae, so that the frontal border becomes very narrow; in proportion to its 

 breadth it is considerably produced, and has a strongly curved, naked anterior margin. 

 Antennulae short, 2-jointed; second joint somewhat shorter as well as narrower than the first 

 one, furni.shed with a few short setae. Maxillae large; the terminal margin of the basal joint 

 essentially as in the female. The basal joint of the maxillipeds has on its outside in the 

 centre a fairly short, thick, rounded process, and distally a thick and very long, slightly 

 curved process; the next joint (second and third fused together) has a larger or smaller 

 outstanding process somewhat on the boundary between the anterior and the outer side. 

 The lateral margin of the head is furnished with a row of fine, rather short hairs, and a 

 similar row is seen somewhat outside the margin. The trunk is closely covered all over 

 with very small transverse eminences, from each of which spring several short, fine hairs. 

 - The frontal thread, if found, is long and of peculiar shape; in fig. 3h such a thread, 

 lettered with an s, is shown as fixed to a marsupial plate (t); it is somewhat longer than 

 the male, thin in the greater part of its length, then dilates pretty quickly and evenly 

 towards its distal end, forms a collar-like ring, continues dilating, and forms a second ring 

 at the thickest part of its expansion; beyond this ring it is still thick, though slowly de- 

 creasing in circumference, and at last increases a little up to the distal end, by which it 

 attaches itself. 



