2 19 



Length of merus 



Width of merus 



Proportion 



Length of carpus 



Width of carpus 



Proportion 



Length of propodus 



Width of propodus. : 



Proportion 



Length of dactylus 



Length of the dorsal hook with regard to the ventral 

 Thickness of the dorsal hook with regard to the ventral 



N" I male, long 13,5 mm. from Stat. 49^; N" 2 and N" 3, females with eggs, 16 mm. 

 long, from Stat. 258; N" 4 male, long 15,5 mm., and X" 5 young specimen, both from Stat. 258; 

 N° 6 female with large eggs, 10 mm. long, from Stat. 260; N" 7 male from Stat. 258. 



Remarks. The examination of two specimens from Kagoshima, Japan, referred by 

 Dr. Ort.m.vnn (1. c.) to Syn. prolificiis (Sp. Bate), proved them to belong to Syn. Gravicrl. 

 The proportion between the greatest width of the telson and that of its posterior margin was 

 hardly 2, just as in the inale N" 7 from Stat. 258; both in this male and in Ortm.\nn's specimens 

 the telson appeared a little narrower than in the other specimens collected by the "Siboga". 



General distribution: Djibouti (Coutiere) ; Maldive Archipelago (Coutiere); China 

 Sea (Coutiere); Tokyo Bay and Kagoshima, Japan (Ortm.\nn). 



f 7. Synalpheus Iphinoc de Man. 



J. G. DE Man, in: Tijdschr. d. Ned. Dierk. Vereen. (2) Dl. XI, 1909, p. 116. 



Stat. 49'. April 14. 8°23'.5S., ii9°4'.6E. Sapeh-Strait. 70 m. Coral and shells, i male. 

 Stat. 51. April 19. Madura-bay and other localities in the southern part of ]\Iolo-Strait. 



From 54 — 90 m. Fine grey sand. 2 males and i ova-bearing female. 

 Stat. 240. November 22 till December i. Banda-anchorage. Lithothamnion-bank in 18 — 36 m. 



I male. 

 Stat. 279. January 1 1 '13. Rumah-Kuda-bay, Roma-island. 36 m. Mud and sand, i male. 



A new species of small size, belonging to the Neomeris group. 



The rostrum in the male from Banda, which is regarded as the type, is narrow and 

 reaches to the distal third of the visible part of first antennular article. The conical and acuminate, 

 orbital spines are hardly shorter than the rostrum and diverge slightly outward : the three spines 

 are distinctly curved upward at their tips and are not setiferous. In the male from 

 Ruma-Kuda-bay the three spines reach a little farther forward and the supraorbital spines do 

 not diverge outward, in the male from Stat. 49^ they slightly diverge, but are somewhat shorter 

 with regard to the rostrum than in the type; the males from Madura-bay resemble that from 

 Sapeh-Strait, but the rostrum reaches the end of first antennular article, the ova-bearing female, 

 finally, agrees with the type, but the supraorbital spines are less broad and anteriorly much 



87 



