408 



the anal opercle rather prominent and perfectly smooth. Caudal rami inuc 

 shorter than the anal segment and conspicuously constricted at the base, each 

 provided dorsally, near the end, with a remarkably large bulbous prominence tipped 

 with a delicate seta, extremity of the ramus somewhat dilated and transversely 

 truncated, carrying at the outer somewhat projecting corner 2 short juxtaposed 

 bristles and at the inner another similar bristle, the 2 median setae rather 

 slender, the inner one exceeding half the length of the body. Eye wholly 

 absent. Anterior antennae of rather feeble structure, about half the length of the 

 anterior division, and clothed with comparatively short seta3, joints of the prox- 

 imal part successively diminishing in length, the 1st scarcely thicker than the 

 others, and densely ciliated along the anterior edge, terminal part exceeding half 

 the length of the proximal, and having the 2nd joint the longest. Posterior 

 antennae with the distal joint narrow linear in form, outer ramus replaced by a 

 small seta. Mandibular palp comparatively small, basal part only slightly dilated, 

 and carrying inside a single thickish seta, outer ramus smaller than inner and 

 imperfectly defined at the base, with only 2 apical setae. Posterior maxillipeds 

 rather slender, with the propodos narrow oblong in form, dactylus much elon- 

 gated. 1st pair of legs with the basal part conspicuously constricted in the 

 middle and carrying at the end on each side a remarkably slender curved seta; 

 outer ramus with the middle joint much longer than the others, last joint armed 

 at the end with 4 somewhat geniculate setae gradually increasing in length 

 inwards; inner ramus with the proximal joint longer than the outer ramus and 

 very narrow, carrying inside, at some distance from the end, the usual seta; 

 distal joint scarcely exceeding Vs of the length of the proximal one, and provided 

 inside, at about the middle, with a short seta, tip armed with a slender claw- 

 like spine and a still longer seta accompanied inside by a small bristle. The 

 3 succeeding pairs of legs with the outer ramus long and slender, 1st joint small 

 and without any seta inside, terminal joint exceeding in length the other 2 com- 

 bined, and having inside in the 2nd pair 2 setae, in the 2 succeeding pairs only 

 a single seta, spines of outer edge remarkably long and slender; inner ramus 

 narrow linear in form and in the 2 posterior pairs scarcely half as long as the 

 outer, with only a single seta inside the distal joint, in 2nd pair somewhat longer 

 and having 2 setae inside the distal joint. Last pair of legs with the distal joint 

 long and slender, somewhat fusiform in shape, and exserted at the end to a very 

 narrow process tipped with a hair-like bristle, its outer edge clothed with scat- 

 tered hair and moreover carrying 3 curved setae, inner edge with a single some- 

 what longer seta; outer process of proximal joint remarkably long and slender. 



