287 



wide, unarmed at the apex of the upper margin. The relative dimensions of the small chela 



3,2; height 0,86 — 0,93, and this chela is 3,42 — 3,46-times longer 



are : fingers i ; total length 3 



than high, showing a slightly more slender form than that of Syn. biungtiictilatiis. Fingers as 

 in this species, tapering, glabrous above, outer margin of the dactylus fringed with rather long, 

 stiff setae from the articulation to the tip. 



Merus of second legs in the adult female from the Jedan Islands 4,3-times, in that from 

 Stat. 164 4,75-times longer than wide. First segment of the carpus 3,7-, respectively 4-times 

 as long as thick distally, as long as the sum of the four following and scarcely a little longer 

 than the chela, the fingers of which are nearly one and a half as long as the palm ; the second, 

 the third and the fourth segment are subequal and the fifth appears one-third longer than thick. 



The relative dimensions of the third legs agree also much with those of Syn. biuiigui- 

 culahis (Cout.). As results from Table B, the merus appears, in the adult specimens from the 

 stations 164 and 310, a little longer with regard to the carpus than in the adult female from 

 the Jedan Islands and in the young male from Stat. 3 1 5 the propodus appears a little longer 

 and a little more slender : these differences are no doubt individual. The propodus is armed 

 with eight spinules, in the adult female from Stat. 273 0,16 — 0,17 mm. long, in the young 

 male from Stat. 315 there are only si.x spinules long 0,09 — 0,11 mm. Measured from the base 

 of the anterior margin to the tip of the ventral hook, the dactylus proves to measure in the 

 adult female from Stat. 273 one-.sixth the length of the propodus and to be nearly twice as 

 long as broad near the articulation ; in the specimen from Stat. 1 64 and in the young male 

 from Stat. 3 i 5 the dactylus measures little more than one-seventh of the propodus. The ventral 

 hook, i. e. its anterior margin, is directed perpendicularly to the posterior border of the dactylus, 

 the dorsal hook is a little longer and a little more slender than the other and the notch between 

 both hooks is concave, not sharp at its base. Ova rather numerous, large, those of the female 

 from the Jedan Islands 1,46 — 1,53 mm. long, those of the female from Stat. 310 are 1,24 mm. 

 long. The female from Stat. 273 is 23 mm. long, that from Stat. 164 20 mm. and that from 

 Stat. 3 10 16 mm. 



Table A. 



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

 Proportion between the width at 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 either pair from the posterior margin 



Table B. 



j ]\Ierus 



Relative dimensions of \ Carpus 



' Propodus 



Proportion between the length of the merus and that of the propodus 

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

 Proportion between the length and the width of tlie propodus . 



N° I Stat. 164; X'^ 2 Stat. 273; N'^ 3 Stat. 310; N'^ 4 Stat. 315 



155 



)f third legs 



NO 4. 

 3.31 



2,1 



1,56 



1,6 



NO I. NO 2. NO 3. NO 4. 



2.5 



I 

 1,96 

 1,27 



4 



5,8 



