2 X2 



of a stouter shape than in Syn. streptodactylus, the proportion between length and width 

 beino- 2,51: for the rest it much resembles that of this species. The ventral hook is almost 

 twice as long as broad at its base, the proportion being as 15:8: the dorsal hook is just 

 half as broad at its base as the other, hardly shorter, the proportion being as 15:14, and it 

 makes an acute angle with the ventral hook; as in Syn. streptodactylus both hooks are slightly 

 diverging. 



Relative measurements of the fourth legs: carpus 1 ; merus 2,15; propodus 2,11. The 

 merus is 3,52-times longer than wide, with one very small spinule, long 0,06 mm., nearly in 

 the middle; carpus, as in the third legs, 2,5-times as long as wide; propodus 5,43-times as 

 long as wide, bearing 7 spinules long 0,07 — 0,08 mm., besides those at the distal extremity. 

 Dactylus 0,38 mm. long, just one-fourth the length of the propodus, a little more than half as 

 long as the carpus and resembling that of the third legs; proportion between length and width 

 2,7; ventral hook twice as long as thick at its base, the proportion being as 16:7, dorsal 

 hook a little more than half as broad at its base, the proportion being as 4,3 : 7, and hardly 

 shorter, the proportion between the length of both hooks being as 16 : 15. The anterior 

 margin of the dactylus is slightly sinuate, like that of the third legs, but it is not so regularly 

 arcuate as in Syn. streptodactylus. 



The third and' the fourth legs are, in both species, equally setose. 



Length 1 1,5 mm. 



f 12. Synalphciis modest as de Man. 



J. G. DE Man, in: Tijdschr. d. Ned. Dierk. Vereen. (2) Dl. XI, 1909, p. 115. 



Stat. 240. November 22 till December 1. Banda. Reef. 1 specimen, probably a male. 



A new species of the Neomeris group, closely related to Syn. streptodactylus Cout. 



The rostrum of this specimen which is 11 m. long, is si en der, five times as long as 

 wide at its base and it reaches just beyond the middle of median antennular article; the frontal 

 spines, spiniform and acuminate like the rostrum, are directed straight forward or perhaps a 

 little inward and are much shorter than the rostrum, for they only reach to the distal fourth 

 of the visible part of first antennular article. The rostrum is slightly curved upward at the tip 

 and, in a lateral view, appears to be situated at a somewhat lower level than the lateral spines. 



Telson 2,375-times as long as the posterior margin is broad, proportion between the 

 greatest width and that of the posterior margin 1,77; outer angles of the latter acute, spini- 

 form, though much shorter than the rounded, median part of the margin. The spinules of the 

 anterior pair on the upper surface are 0,13111111. long, those of the posterior pair 0,146111111., 

 and they are situated as in Syn. streptodactylus, though much c 1 o s e r to the lateral margins ; 

 as in this species, the anterior pair is placed before the middle, the proportion between the 

 length of the telson and the distance of the anterior pair from the posterior margin being 1,84 

 and the proportion between the distances of both pairs from the posterior margin is 1,48. The 

 telson of Syn. streptodactylus is always somewhat longer with regard to the width of the posterior 

 margin and the spinules of the upper surface are somewhat farther distant from the lateral margins. 



