41 



the antennular peduncle by one and a half or sometimes even almost by twice the length of 

 the 3"' joint, is as -long as the outer uropod; it is in the male little more than twice, in the 

 female 2Yo-times as long as broad. 



The hairy mandibular palpi reach, both in the male and in the female, to the base of 

 the antennal scales; the i^' or proximal joint is 2Y2-times as long as broad, it shows its 

 greatest width at the posterior third and gradually narrows forward, but more rapidly backward 

 and the lower or outer surface is slightly concave; the likewise tapering, 2°<i joint is little 

 more than half as long as the preceding and much narrower. The epipod of the i^' maxillipeds 

 is divided, by an incision on its outer border, in a larger posterior and a smaller anterior 

 portion ; the 3'^'^ or 4"^ distal part of the exopod tapers to the pointed tip. The 3''^ joint ot 

 the endopod, almost as long as the following joints combined, is curved, its inner margin 

 concave, the outer convex; the two following joints are short, the 4'*^ somewhat longer than 

 the s'**, the tapering penultimate joint is one and a half as long as the two preceding combined 

 and as the terminal joint. 



The merus of the 2'"' maxillipeds is 3-times as long as broad, the penultimate joint 

 much broader but almost as long as the carpus, while the terminal joint is a little longer. 



The external maxillipeds reach in the male with half or with the whole terminal joint 

 beyond the tip of the antennal scales ; the terminal joint, slightly compressed like the preceding, 

 is a little shorter than the penultimate, 6-times as long as broad and the apex is obtuse ; in 

 the female these foot-jaws project also with more than half or with the whole terminal joint 

 beyond the scales and this joint, here also a little shorter than the penultimate, is much 

 slenderer than in the male, being 14- or 15-times as long as thick. 



The 2"<^ and the 3''^ joint of the i^' pair of legs that reach about to the end of the 

 antennal peduncles, carry each a very small, subterminal spinule ; the merus is armed with 4 

 or 5 small spinules along the lower margin of its outer face; the carpus, nearly twice as long 

 as the chela, is a little longer than the merus and the fingers are about one and a half as 

 long as the palm. 



The legs of the 2"^ pair extend to the distal third or fourth part of the antennal 

 scales; the carpus of these legs that are unarmed, is one and a half as long as the merus 

 and 3-times as long as the chela; fingers a little longer than the palm. 



The legs of the 3''^ pair, also unarmed, reach, in the male with the fingers, in the 

 female with the chela or even a little more, beyond the antennal scales; the carpus, that, as 

 in the 2"*! pair, is a little dilated proximally, is one and a half as long as the merus and 

 2,^ j „-t'imes as long as the chela. 



The coxa of the 4"^ legs bears a small, conical tooth at its antero-internal angle, behind 

 which one observes, in the female, a somewhat larger tubercle; these legs that extend, when 

 straightened, to the apex of the antennal scales or project with their propodus or a pa.n of 

 it beyond that apex, do not surpass the legs of the 3''^ pair; the carpus, a little shorter than 

 the merus, is almost 3-times as long as the propodus and the dactylus is somewhat more than 

 half as long as the preceding joint. 



The legs of the 5'"^ pair, in the male a little more than half as long as the body, 



41 



SIBOGA-EXPEDITIE XXXIX fl. 6 



