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upper surface are large, 0,25 mm. long; the anterior pair is situated before the middle, proportion 

 between the length of the telson and the distance of the anterior pair from the posterior margin 

 1,64, proportion between the distances of either pair from the posterior margin 1,83. 



Merus of the small cheliped (the other is missing) 2,8-times as long as wide, with a 

 small acute tooth at the apex of the upper margin as in Fig. 13^; the small chela shows the 

 following dimensions : fingers i; total length 3,1; height 1,04. 



Merus of second legs 6-times longer than wide. First carpal segment 5-times longer 

 than thick, a little longer than the sum of the following, the three following segments equal ; 

 chela a little shorter than the sum of the 2 nd — 5* segments, fingers one and a half as long 

 as the palm. 



The relative dimensions of the third legs are: merus 2,66; carpus i; propodus 2,34. 

 Proportion between the length of the merus and that of the propodus 1,14. Merus 4,55-times, 

 propodus 6,3-times longer than wide, the propodus slender, slightly narrowing distally and 

 armed with 11 rather short spinules, that are 0,1 — 0,116 mm. long. Measured from the proximal 

 extremity of the anterior margin to the extremity of the ventral hook, the dactylus proves to 

 measure almost one-fifth of the propodus and it much resembles that of Syn. hastilicrassus, 

 but the dorsal hook is one and a half as long and a little less thick at its base than the 

 ventral hook. These legs are slightly setose. 



In other specimens from this station the frontal spines more closely resemble Fig. 1 3 

 of the original description, but in all these specimens the internal spinules of the posterior 

 margin of the telson are much longer than the spiniform external angles. 



One of the females from Stat. 273 is 11 mm. long; ova small, 0,66 — 0,73111111. long. 

 The rostrum is slender, reaching almost to the middle of median antennular article ; lateral 

 spines and antennal region as in Fig. 13', (1. c). Telson 2,3-times longer than the distance 

 between the spiniform outer angles of the posterior margin, proportion between this distance 

 and the greatest width 1,8; the internal spinules of the posterior margin are considerably 

 longer than the spiniform angles. The spinules of the upper surface are 0,25 mm. long, pro- 

 portion between the length of the telson and the distance of the anterior pair from the posterior 

 margin 1,7; proportion between the distances of either pair from the posterior margin 1,6. 



Merus of large cheliped twice as long as wide, with a spiniform tooth at the apex of 

 the upper margin as in Fig. i^a. Proportions of the large chela: fingers i; total length 3,6; 

 height 1,3. Proportion between the length of the large chela and that of the smaller 2,46. 

 Merus of small cheliped 2,5 6-times longer than wide, with an acute tooth at the apex of the 

 upper margin; proportions of the small chela: fingers i; total length 2,8; height 0,94. Second 

 legs as in the preceding specimen, but the merus is 6,4-times longer than wide and the second 

 segment is a little smaller than the third or the fourth which are equal. 



The proportions of the third pair are: merus 2,75; carpus i; propodus 2,5. Proportion 

 between the length of the merus and that of the propodus 1,1. Merus 4,4-times, propodus 6,25- 

 times longer than wide, the latter with 9 spinules long 0,095 — 0,117111111. Dactylus almost one- 

 fifth of the propodus. 



In the three other specimens from this station the basicerite is unarmed above, as 



! 34 



