356 



middle, 4-times as long as wide ; four spines on the posterior margin of the carpus. Subapical 

 tooth of the merus of fourth legs much smaller than that of the third; carpus with 3 spines 

 on the posterior border besides the terminal one. 



In the specimen from Haingsisi, a female long 13 mm., the posterior margin of the 

 6* abdominal somite carries 3 acute teeth in the middle instead of 2 as usually. 



In the young specimen from Stat. 80, in one from Stat. 133, in the specimens from 

 Banda and in the two youngest from Stat. 282 the subapical tooth of the merus of fourth 

 legs appears a little larger than usually and but little smaller than the tooth with which the 

 merus of the third legs is armed; in these specimens the posterior margin of the 6^^ abdominal 

 somite is entire, presenting no trace of the two or three teeth that ordinarily occur on it in 

 the middle and in the young individual from Stat. 80 the scaphocerite appears a little longer 

 than the antennal peduncle. In the young male from Stat. 144 the lower margin of the ischium 

 of the smaller cheliped ends in a sharp tooth and this is also the case with the ischium of 

 both chelipeds in a specimen from Stat. 164 and in this specimen one observes again three 

 teeth on the middle of the posterior margin of the 6'^^ somite instead of two. All these diiTerences 

 are regarded by me as individual varieties. Those specimens in which the tooth on the merus 

 of 4"^ legs is larger than usually and in which the 6'^ somite bears no teeth in the middle of 

 its posterior margin, approach to A. biicephaltts Cout., but the broadened dactylus of the 

 smaller chela in the male, the biunguiculate dactyli of the 3''^ and 4''^ legs, the spine on the 

 basicerite etc. are characters, by which A. paralcyone is easily distinguished. 



In the very young specimen, long 4 mm., from Stat. 303 the telson is 0,74 mm. long, 

 0,36 mm. broad near the base and the posterior margin is 0,22 mm. broad; the telson appears 

 therefore a little more slender than in adult specimens. 



General distribution: Maldive and Laccadive Archipelagoes (Coutiere) ; off Mutwal 

 Island (Pearson). 



19. Alphezts paraciUeipes Cout. 



Alpheus paraculeipes H. Coutiere, Alpheidae Maid, and Laccad. Archip. 1905, p. 894, PI. LXXIX 



and LXXX, fig. 32. 

 Alpheus paraculeipes J. Pearson, On the Macrura, in : Herdman's Report Pearl Oyster Fisheries, 



1905, p. 84. 



Stat. 282. January 15/17. 8°25'.2S., i27°i8'.4E. Anchorage between Nusa Besi and the N.E.- 

 point of Timor. 27 — 54 m. Sand, coral and Lithothamnion. i young specimen, 

 9 mm. long. 



The scaphocerite hardly reaches to the middle of 3'^'^ antennular article, while the 

 rudimentary blade e.xtends to the 2"*^ third part of median article. 



Telson i ,44 mm. long, width near the base 0,82 mm., width of the posterior margin 0,64 mm. 



The carpal segments of the second legs are 0,45 mm., 1,12 mm., 0,26 mm., 0,27 mm. 

 and 0,4 mm. long; chela 0,86 mm. long (palm 0,34 mm., fingers 0,52 mm.). Proportion between 

 the first and the second segment 2,5, in older specimens it becomes 3. 



Merus of 3''^ legs four times as long as broad in the middle (2,04 mm. long and 0,5 mm. 



224 



