164 



d x Telson elongate, 6,5-times as long as the posterior margin 

 is wide, the latter about one-third the width at the base. One 

 of the chelae 3,6-times, the other probably almost 5-times as 



long as high amboinensis de Man 



(J. G. DE Man, in: Archiv f. Naturg. 76. Jahrg. 1910, p. 25 — 27). 



d„ Telson less than 5-times as long as the posterior margin is 

 wide. Chelae about twice as long as high. 

 e l Merus of the third and the fourth legs with a small, though 

 distinct tooth at the apex. Merus of the second legs more 

 than 4-times as long as wide, that of the third 4 — 4,6- 

 times. Rostrum about one and a half as long as wide . dorsalis Stimps. 

 e„ Merus of the third and the fourth legs truncate at the apex, 

 apical tooth wanting or hardly discernible. Merus of the 

 second legs 3-times as long as wide. 

 ƒ, Rostrum one and a half as long as wide. Merus of third 



legs 2, 7 5-times as long as wide, propodus 4-times . . Maruteensis Cout. 

 /„ Rostrum twice as long as wide at the base. Merus of 

 the third legs 3,35-times as long as wide, propodus 

 5-times Maruteensis Cout., var. Salibabuensis de Man 



f 1 . Arete Iphianassa de Man. 



J. G. DE Man, in: Tijdschr. d. Ned. Dierk. Vereen. (2) Dl. XI, 1910, p. 312. 



Stat. 125. July 18/19. Anchorage off Sawan, Siau-island. Reef. 1 male and 1 ova-bearing female. 

 Stat. 142. August 5/7. Anchorage off Laiwui, coast of Obi Major. Reef. 1 young male. 



A new species of small size, closely approaching to Ar. indicus Cout. Rostrum 

 acuminate, about 3-times as long as wide at its base, reaching, as in Ar. indicus, to the distal 

 third part of third antennular article ; anteriorly the rostrum is carinate, the rostral carina, 

 separated by lateral grooves from the lateral margins, gradually widens backward. The lateral 

 margins of the rostrum, which is slightly directed downward, make right, though arcuate angles 

 with the orbital margins, that, like in Ar. indicus, show no tracé at all of supra-corneal teeth 

 ("denticules supra-cornéens"). Spine at the outer angle of the orbits as long as the eyes. 



Third antennular article twice as long- as the second and as long as the second and the 

 visible part of the first taken together ; anterior margin of the first and of the second article 

 finely denticulate, the denticles rather acute. The outer antennular flagellum consists, 

 both in the male and in the female, of four articles, the first of which is a little longer than 

 thick, the three following one and a half as long as thick. Stylocerite bent, acuminate, a 

 little shorter than the antennular peduncle. The terminal spine of the scaphocerite is a little 

 more than twice as long as broad at its base and projects a little beyond the antennular 

 peduncle, while the scale is slightly shorter than it ; carpocerite stout, one and a half as 

 long as wide, looked at from the lower side, and hardly as long as the antennular peduncle 



3 2 



