369 



long, in the other specimen: 0,66mm., 0,54mm., 0,19mm., 0,21mm. and 0,32mm.-, in this 

 specimen the second segment appears 2,7-times, in the Banda specimen 3,5-times as long as 

 thick, the third and the fourth segment are almost as thick as long and the fifth is 1,7-times 

 as long as thick at its far end. The chela, 1,15 mm. long in the Banda male and 0,88 mm. 

 in the other, appears one-third longer than the first segment of the carpus; the fingers are a 

 little more than one and a half as long as the palm, which is almost one and a half as long 

 as wide. As results from the Table of measurements, the relative dimensions of the y^ legs 

 agree pretty well with those of the typical species, viz.: merus 2,25; carpus i; propodus 1,4. 

 The merus is armed with a strong acute tooth, directed obliquely forward, the propodus bears 7 

 or 8 spinules, that slightly increase in length and the three or four last of which are double. 

 Dactylus very short, hardly one-fourth of the propodus. 



The 4'^ legs that are characteristic of this variety have been described above. 



The specimens from Stat. 152 are 14 mm. and 9,5 mm. long, the male from Banda 13 mm. 



Table A. 



Proportion between length of telson and width of posterior margin 



Proportion between the width at base and that of posterior margin 



Proportion between the length of the telson and the distance of the anterior 



pair of spinules from the posterior margin 



Proportion between the distances of both pairs of spinules from the posterior 



margin 



NO 3. 

 4 

 2 



1.9 



Table B. 



Relative dimensions of 



merus 



carpus 



propodus 



Proportion between length and width ol merus 

 Proportion between length and width of propodus 



merus 



Relative dimensions of \ carpus 



I propodus 



Proportion between length and width of merus 

 Proportion between length and width of proprodus 



. Alphetcs frontalis H. M.-Edw. 



Alpliciis frontalis H. Milne-Edwards, Hist. Nat. Crust. II, 1837, p. 356. 



Alphciis frontalis G. Cuvier, Regne animal. Crustaces. PI. 53, fig. 2. 



Alpheus frontalis A. Ortmann, in: Zoolog. Jahrb. V. Abth. f. Syst. 1S90, p. 488 and in: 



Jenaische Denkschriften, VIII, 1894, p. 15. 

 Alpheus frontalis H. Coutiere, Alpheidae Maid, and Laccad. Archip. 1905, p. 899. 

 Alphciis latifrons A. Milne-Edwards, Journal des Museums GodeftVoy. 1874, p. 11. 

 Alpheus latifrons J. G. de Man, in: Archiv f. Naturg. 53. Jahrg. 1888, p. 521, PI. XXII, 



fig. 4 and in: Zoolog. Jahrb. IX. Abth. f. Syst. 1897, p. 758, Taf. 36, fig. 6^ and in: 



Abhandl. Senckenb. Naturf Gesells. XXV, ig02, p. 876. 



237 



