74 



occupying more than half the length of the anterior division, lateral edges 

 finely ciliated; rostral projection rather prominent, with the tip narrowly 

 rounded off and fringed with delicate cilia between the 2 usual sensory hairs. 

 The 2 succeeding segments with the lateral parts lamellarly expanded and 

 finely ciliated at the edges; the 3rd trunkal segment somewhat less broad, 

 with the epimeral plates less fully developed; last segment very short. 

 Urosome scarcely more than half as long as the anterior division and much 

 narrower, tapered behind; genital segment nearly twice as broad as it is long 

 and distinctly subdivided in the middle; the succeeding segments without any 

 distinctly defined lateral expansions, but, like the genital segment, ciliated at 

 the edges; last segment scarcely smaller than the preceding one and having 

 the anal opercle well developed and minutely denticulate at the edge. Caudal 

 rami about the length of the anal segment and somewhat divergent; apical 

 setae moderately elongate. Anterior antennae rather slender, though nut at- 

 taining the length of the cephalic segment, and composed of 6 joints clothed 

 with scattered rather long setae; 2nd joint somewhat dilated, but scarcely as 

 long as the 3rd. Posterior antennae comparatively strongly built, with the 

 spines attached to the terminal joint very coarse and somewhat curved at the 

 tip; outer ramus small, uniarticulate, with 4 ciliated setae. Posterior maxillipeds 

 very powerfully developed. 1st pair of legs also rather strongly built, with the 

 inner ramus large and armed at the end with an unusually strong curved 

 claw; outer ramus very narrow, 3-articulate, and extending a little beyond the 

 middle of the proximal joint of the inner. The 2 succeeding pairs of legs of 

 rather normale appearance. 4th pair of legs very unlike the preceding pairs 

 and much smaller, 2nd basal joint produced outside to a long digitiform 

 process ciliated on both edges and carrying on the tip the usual slender 

 bristle; outer ramus only composed of 2 joints, the proximal of which is the 

 shorter and provided outside with a thickish densely ciliated seta, distal joint 

 of a somewhat irregular form and edged with 5 setae similar to that attached 

 to the proximal joint, each seta springing off from a knob-like prominence of 

 the edge; inner ramus composed of a single small joint carrying on the tip 

 2 setae. Last pair of legs with the proximal joint quite short and produced 

 outside to a slender process tipped with a bristle, its inner part only very slightly 

 expanded and provided with 3 marginal setae of about equal length; distal 

 joint remarkably constricted at the base, but widening in its outer part to a 

 broad hairy plate carrying 5 comparatively short marginal setae. 



Colour not yet ascertained. 



Length of adult female 0.51 mm. 



