431 



a little shorter, sometimes slightly longer than the i^', that the three following segments taken 

 together are a little shorter than the 2'^'^, that the 4"^ is a little shorter than the 3''^, that the chela 

 is about as long as the 2^'^ segment and that finally the fingers are twice as long as the palm. 

 The following legs are more slender than those of the typical species. Ischium of 

 3'''^ and 4"^ pair with a movable spine. Meri unarmed, those of the 3'"'^ pair 7-times as long 

 as wide; carpus half as long as the merus, propodus 1,6-times as long as the carpus, very 

 slender, unarmed like the carpus, its margins fringed with long setae, two or three of 

 which at the distal e.\tremity are hardly shorter than the dactylus; dactylus half as long as 

 the propodus, lanceolate, flattened and carinate above. 



Table A. 



Proportion between the length of telson and the 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 



N» I. N» 3. K» 4. N" 5. 



1.55 



1,8 



2,25 



Table B. 



Proportion between length and width of the merus 



I fingers 

 total length 

 height 



Proportion between length and height of the chela 



Proportion between length and width of the merus 



I fingers 

 total length 

 height 



Proportion between length and height of the chela 



of the larger 

 cheliped 



of the smaller 

 cheliped 



N" I. N" 2. NO 3. N» 4. NO 5. N» 6. 



9 

 2,9 



I 



2,6 



o,9 

 3 



3>4S 

 I 



1,32 

 0,23 



5.7 



Table C. 



Proportion between length and width of the merus . I 

 Proportion between length of the merus and that of of the 2°'! legs 

 the carpus J 



Table D. 



N» I. NO 2. N" 3. NO 4. NO 5. NO 6. 



9 <f 9 d" d" 9 



10 



10 



1.5 1.5 



9.3 

 1.6 



9 

 1,66 



merus 



Relative dimensions of 1 carpus 



( propodus of the third 



Proportion between the length of merus and propodus pair 



Proportion between length and width of the merus . 

 Proportion between length and width of the propodus 



N" I female from Stat. 12; N" 2 and 2=^ males, N" 3 female from Stat. 19; N" 4 male 

 from Stat. 31 i ; N" 5 male and N" 6 female of the typical A. dolicJwdactylus Ortm. from Japan. 



299 



o 



2 

 I 



1.47 



1.35 



6 



