2Ó2 



posterior o, 19 mm.; the anterior pair is situated before the middle, about one and a half as far 

 distant from the posterior margin as from the base, the posterior pair just as far distant 

 from the distal extremity of the telson as the distance between the postero-lateral spiniform 

 angles is wide. According to the quoted figure of Syn. tumidomanus, however, in this species the 

 posterior pair is situated much more backward, its distance from the posterior extremity being 

 only half as long as the width of the posterior margin. The two pairs of spinules are rather 

 far distant from the lateral margins and the spinules of the anterior pair are but a little 

 farther distant from one another than those of the posterior, the distance between the two anterior 

 spinules being in proportion to the distance between the posterior as 6:5; the distance, finally, 

 between the two anterior spinules is in proportion to the distance between the two pairs as 7:4. 

 The four spinules appear therefore to be inserted at the angles almost of a rectangle. 



The large cheliped is missing in all the specimens. Merus of small cheliped 2,54-times 

 as long as wide, upper margin terminating in a small, spiniform tooth. Relative dimensions of 

 the small chela: fingers 1 ; total length 3,2; height 1,1. The fingers are comparatively shorter 

 than those of the small chela of Syn. hululensis. 



Merus of second legs 5,3-times longer than wide; first segment of the carpus 5,6-times longer 

 than thick at its distal extremity, clearly longer than the sum of the four following, viz. 1,23-times; 

 chela as long as the carpus, exclusive the first segment, fingers one-fifth longer than the palm. 



For the measurements of third pair I refer to the Table B : these legs apparently much 

 resemble those of Syn. hululensis Cout. In the specimens from the Stations 144 and 282 the propodus 

 bears ten spinules, in that from Stat. 78 eight; these spinules are o, 15 — o, 1 9 mm. long. The dactylus, 

 similar to that of Syn. hululensis, appears, when measured from the proximal end of the anterior 

 margin to the extremity of the ventral hook, to be 3-times as long as wide at its base and measures 

 one-fifth the propodus; the dorsal hook is twice or almost twice as long as the ventral and 

 only very slightly broader at its base, while the notch between both hooks is rounded internally. 



Eggs rather numerous, 0,75 — 0,8 mm. long. The largest specimens, egg-bearing females, 

 are 13,5 mm. long, but one of the egg-bearing females from Stat. 282 measures only 9,5 mm. 



Table A. 



Proportion between length of telson and width of the posterior margin 



Proportion between the greatest width and that of the posterior margin 



Proportion between length of telson and the distance of the anterior pair of spinules 

 from the posterior margin 



Proportion between the distances of both pairs of spinules from the posterior margin 



Table B. 



I Merus 

 Carpus 

 Propodus 



Proportion between the length of the merus and that of the 



propodus 



Proportion between length and width of the merus 



Proportion between length and width of the propodus . . . . 



130 



of the third legs 



