274 



the female differs somewhat from the male and from the two other specimens as regards the 

 frontal teeth and the measurements of the legs. The telson resembles Fig. Sd (1. c), but the 

 posterior margin is a little less prominent and its outer angles are decidedly acute, 

 though measuring only one-fourth of the contiguous, short, outer spinules. The anterior 

 spinules of the upper surface are 0,25 mm. long, those of the posterior pair 0,27 mm.; they 

 are rather large, those of the posterior pair measuring, in the male, about one-eighth of the 

 length of the telson. 



Merus of the small cheliped of the male 3,4-times as long as wide, upper margin 

 unarmed at apex. Relative dimensions of small chela : fingers i; total length 3,32; heigth 1,1, 

 the chela just 3-times as long as high. The fingers measure in Fig. Só (1. c.) just one-third 

 the total length of the chela, but are in the male from Stat. 282 a little shorter; the fingers 

 are tapering, not enlarged and the dactylus is fringed, along its outer • margin, with rather 

 long, stiff setae, both in the male and in the female. Merus of second legs in the male 

 5-times as long as wide. First segment of the carpus 3,6-times longer than thick, a little 

 shorter than the sum of the four following, the proportion being as 1 : 1,125; chela precisely 

 as long as the first segment, fingers one-third longer than the palm. The females from the two 

 other stations agree with the male, but in the female from Stat. 2S2 the merus is 4,4-times 

 longer than wide; the first carpal segment is 3-times as long as thick and comparatively shorter, 

 the proportion between this segment and the sum of the four following being 1,37; the chela 

 appears a little longer than the first segment. 



As results from Table B the relative dimensions of the female from Stat. 282 agree 

 much more with those taken from the figure 8 c (1. c.) than with those of the male and of the 

 two females from the two other stations, probably, however, these differences may be considered 

 as individual. The propodus bears in the specimens from Stat. 282 eight spinules, in the adult 

 female from Stat. 64 nine, in that from Stat. 299 ten spinules. Measured from the base of the 

 anterior margin to the tip of the ventral hook, the dactylus proves to measure one-sixth of the 

 propodus and to be little more than twice as long as broad near the articulation ; the two 

 hooks are subequal in length, the ventral twice as long as broad at its base, the dorsal hook 

 appears a little broader at its base than the ventral when measured from the suture to the 

 anterior margin ; the anterior margin of the ventral hook is directed obliquely to the posterior 

 margin of the appendage, the two hooks are parallel and the notch between them is concave 

 at the base, while in Fig. 8 c' (1. c.) the angle appears acute. 



Uva rather numerous, 0,73 — 0,8 mm. long. 



Table A. 



Proportion between the length of telson and width of posterior margin. . 

 Proportion between the width at the base and that of the posterior margin 

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



pair of spinules from the posterior margin 



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



No 4. 

 3-1 



2,24 



1,4 

 1,53 



142 



