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the chela is 3-times as long as high. In the adult male from Stat. 99 the fingers are a little 

 longer than in the typical specimens, the proportion between the length of the chela and that 

 of the fingers being 2,35, but in the younger males the proportion is 2,6. In an ova-bearing 

 female from Stat. 51, long 13,5 mm., the large chela is 3,2-times as long as high, but the 

 fingers that are just as long as the palm is high, appear jnuch shorter than in the male 

 and this is also the case in the ova-bearing female, long 14,5 mm., from Stat. 274, the proportion 

 being here 3 both for the length of the fingers and the height of the palm. The triangular 

 groove on the inner side of the palm appears larger than in Coutièke's figure 43 a and the 

 rather prominent, lower border of this groove is of a violet colour, like the inner face of 

 the immobile finger and the base of the dactylus. 



The small chela of the adult male from Stat. 99, just as long as the carapace, has a 

 rather stout form, the proportion between the length of the chela and the height of the palm 

 being 3,3; the fingers are very little shorter than the palm, the proportion being 1,07. 

 Whereas the lower border of the palm appears but slightly sinuous, the upper is distinctly 

 notched, the posterior lobe being rather acute; both on the outer and on the inner face the 

 triangular groove is well-developed, deep, extending distally downward to the middle of the 

 palm. As in A. hoplocheles the palm ends distally, at either side of the articulation of the 

 dactylus, in a sharp tooth, the tooth at the inner side being violet coloured and somewhat 

 larger than the other. Dactylus Ba/aemce/>s-shaped, the upper face lanceolate, 2,5-times as long 

 as broad, fiattened above but with a prominent ridge that runs from the proximo-internal angle 

 to the obtuse tip ; lateral carinae beset with long setae. 



The small chela of the adult egg-bearing female from Stat. 51, long 13,5 mm., measures 

 almost two-thirds the length of the carapace and is 5-times as long as high; palm without 

 grooves or notches, fingers simple, slightly longer than the palm, the proportion being 1,15. 

 In the adult, egg-bearing female, long 14,5 mm., from Stat. 274 the small chela agrees with 

 that just described, but the fingers are longer, the proportion between their length ancl that 

 of the palm being 1,27. In Coutière's figure 43 £ the second carpal segment appears slightly 

 loneer than the first and the fourth a little longer than the third: this is also the case in 

 the specimens collected by the "Siboga", but the length of the second segment is somewhat 

 variable. In the adult male from Stat. 99 the carpal segments are 0,95 mm., 1,23 mm., 

 0,44 mm., 0,46 mm. and 0.64 mm. long, the chela 0,94 mm. long (palm 0,4 mm., fingers 0,54 mm.) ; 

 in a younger male from Stat. 51 these numbers are, in the same succession, 0,82 mm., 1 mm., 

 0,38 mm., 0,42 mm. and 0,5 mm., the chela is 0,8 mm. long (palm 0,35 mm., fingers 0,45 mm.). 

 In the ova-bearing female from the same station the segments measure 0,9 mm., 1,06 mm., 

 0,36 mm., 0,4 mm. and 0,56 mm., the chela is 0,84 mm. long (palm 0,4 mm., fingers 0,44 mm.) 

 and in the adult female from Stat. 274, finally, the segments are 1 mm., 1,1 mm., 0,36 mm., 

 0,4 mm. and 0,5 mm. long; the chela measures 0,88 mm. (palm 0,4 mm., fingers 0,48 mm.). 

 Whereas in the first mentioned specimen the second segment appears almost one-third longer 

 than the first, it is only one-tenth longer in the female from Stat. 274. The carpal segments 

 are rather slender, the third segment, e. g., being in the male from Stat. 99 2,44-times 

 as long as thick in the middle, in the younger male 2,5-times, in the female from Stat. 51, 



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