124 



Telson 2,35 — 2,5-times louger than the width of posterior 

 margin, not yet twice as wide anteriorly as the width of the 

 latter; spinules of upper surface a little farther remote frora the 

 lateral margius thau in the typical species and than in the var. 

 halmaheren sis, the anterior pair usually a little before the middle. 



Chelipedes as in the typical species, but the upper margin of 

 meropodite with a very small, apical tooth. First segment of 

 carpus of 2nd legs slightly shorter than the sum of the following. 



Meropodites of 3rd and 4th pair of a stouter form than in the 

 typical species, those of 3rd pair 3,56 — 8,58-times longer than 

 wide; the relative proportions of 3rd pair are: carpus 1; mero- 

 dite 1,94 — 2; propodite 1,63 — 1,64. Dactylus as in the typical 

 species, but the dorsal hook distinctly longer than the other. 



Relative proportions of 4th pair: carpus 1 ; meropodite 1,8 — 1,85 ; 

 propodite 1,7 — 1,71. 



Length of ova-bearing female 14 m.m., ova 0,8 — 0,82 m.m. long. 



27. Synalpheus ancistrorhynchus, n. sp.^) 



Station 273. Anchorage oö Pulu Jedan, East coast of Aru- 

 islands. (Pearl-banks). Depth 13 M. 



A new species of the Paulsoni group, related to Syn. acanthi- 

 telsonis Cout. 



Rostrum short, reaching to the middle of Ist anten nul ar article, 

 rostral carina obtuse, fading away a little behind the corneae; 

 lateral spines a little shorter, their tips acute and, like that of 

 the rostrum, curved upward like barbed hooks. Median antennular 

 article measuring three fourths the visible part of the Ist and a 

 little longer than the 3rd; stylocerite reaching to the 2nd third 

 part of median article. Carpocerite 4,3-times longer than wide, 

 surpassing the antennular peduncle 2i?i ïox a.?,m Syn. acanthitelsonis', 

 lower spine of basicerite as long or slightly longer than stylocerite, 

 upper spine small, turned outward. Terminal spine of scaphocerite 

 shorter than carpocerite, but longer than the antennular peduncle; 

 scale reaching to the extremity of median article. 



1) «yxia-Tpov, barbed hook. 



