294 



regular quadrate, the auterior pair iu the middle or just before 

 it. Telson in the male 2,88 times, in the female 3,4 times as long 

 as the posterior margin is wide. 



Proportion, in the male, between the length of both chelae 2,7. 

 Relative dimensious of small chela: Fingers 1; total length 2,6; 

 height 0,86. Fingers enlarged laterally. Fingers of 2nd pair a 

 little shorter thau the palm. Relative dimensions of 3rd legs: 

 Meropodite 2 — 2,28; carpus 1.; propodite 1,4 — 1,48. Meropodite 

 3,1 — 3,3 times as long as wide, propodite 4,45 — 4,5 times, mero- 

 podite unarmed; dactylus resembling that of Spi. Iatice2:)s [Couiïèr e, 

 1. e. Fig. lic'). Ova large, 1,46 mm. long. 



This species that belongs to the Biungniculatus-grouT^, attains a 

 length of 40 mm., being one of the largest of this genus. 



8. Synalpheus bituberculatus, n. sp. 



Station 60. Haingsisi, Samau Island, Tiraor. Depth 36 M. 



Station 78. Lumu-Lumu-shoal, Borneo-bank. Reef. 



Station 164. Lat. 1° 42'. 5 S., long. 130° 47'. 5 E. Depth 32 M. 



Station 184. Anchorage off Kampong, Kelang, South coast of 



Manipa-Island. Depth 36 M. 



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



islands (Pearl-banks). Depth 13 M. 



Station 282. Lat. 8° 25'. 2 S., long. 127° 18'. 4 E. Anchorage 



between Nusa Besi and the N.E. point of Timor. Depth 



27—54 M. 



Station 315. Anchorage East of Sailus Besar, Paternoster islands. 



Depth up to 36 M. 



A new species of the Biunguiculatiis-groui^, closely related to 

 Syri. pachymeris Cout., but distinguished from this and from all other 

 species of Synalpheus, except Syn. septemspinosus, by the anterior 

 margin of the palm of larger chela terminating in tivo conicaltubercles, 

 placed abreast and directed obliquely upward and foreward. Rostrum 

 slender, with the tip curved upward and reaching to the middle, 

 or in fully ad uit specimens to the 2nd third, of the visible part 

 of basal antennular article; lateral spines triangular, acute, shorter 



