159 



as thick at the distal extremity, in the adult female 7 — 8-times, 

 rarely it presents here also a little less slender form, so ia N° 14 

 and N*^ 17 of tho Table. Like in L. adspersus the chela is con- 

 stantly a little longer than the carj>i(s, 'out the difference in length 

 varies rather much. In the 13 male specimens the carpus proved 

 to be V3.2 — Vg shorter than the chela, the difference in length 

 being in the male rather large (Fig. 3A-); in the adult female 

 (Fig. 3/), however, the difference in length between carpus and 

 chela is usually much smaller ('/lo — Vio): though in 2 adult females 

 the carpus proved to be Y^, respectively ^5 shorter than the chela. 

 Therefore to the naked eye carpus and chela appear, in the 

 female, to be in general of equal length. While in the adult 

 female the palm appears about 4-times as long as wide, it pre- 

 sents a somewhat less slender form in the male, the proportion 

 between length and width varying in the male between 3,1 and 

 3,6, though sometimes (N" 5) the palm here also proved to be 

 just 4-times as long as wide; in young specimens the palm appears 

 also a little broader. Almost in all the male specimens, more 

 than 140 in nuniber, from the PloUandsch Diep, the fingers proved 

 to be a little shorter than the palin^ measuring at least three-fourths 

 of the latter: only 8 males were observed, (5 of which have been 

 measured, W 1, 3, 6, 9, 10 and 12 of the Table), in which 

 the fingers were slighthj longer than the palm, the proportion 

 varying between 1,01 and 1,18. In the adult female the fingers 

 are constantly shorter than the palm, measuring tivo-thirds to 

 four-fifths of the latter, but at a younger age they appear slightly 

 longer. At one-quarter of its length from the articulation the 

 dactylus bears a small obtuse tooth and midway between this 

 tooth and the articulation another which is somewhat smaller; 

 opposite to the latter the immobile finger presents a similar small 

 tooth and between this tooth respectively the larger tooth of the 

 dactylus and the extremities of the fingers a sharp cutting-edge 

 occurs as usual. In young specimens these teeth are less distinct 

 or even wanting at all. 



