421 



which is slightly hairy, appears somewhat sinuous and not col o u red, somc hairs occur 

 also on the inner face of the palm and immobilc finger. 



In an ova-bearing female, long 18 mm., from the same station, the large chela is almost 

 3-times as long as high, viz. 2,8-times, the fingers are a little longer than in the male, the 

 proportion being 2,47. In very young specimens, finally, in which the carapace is 3,75 mm. 

 long, the large chela is, like in the typical species, 3-times as long as high, but the grooves 

 on the palm are as in the adult. Merus of small cheliped of the male also 3-times as long as 

 broad and also armed with a spinule in the micldle and, at the apex, with a spiniform tooth. 

 Chela a little shorter than the carapace, 4-times as long as high, fingers a little shorter 

 than the palm, the proportion between the length of the palm and that of the fingers being 

 1,08 (palm 2,7 mm. long, fingers 2,5 mm., in the male long 16,5 mm.). Upper border of the 

 palm distinctly notched, triangular groove on the outer surface extending downward almost to 

 the middle, triangular groove on the inner side just as deep, but reaching less far downward, 

 inner face of palm and fingers hairy. At either side of the articulation of the dactylus the 

 palm terminates in an acute tooth like in A. hoplocheles Cout. ; lower border of the palm not 

 notched, but only slightly sinuous. Dactylus Ba/aeuiceps-shaped, its upper face slightly convex 

 transversely, 3-times as long as broad; lateral carinae with long setae. 



Only one female bears the small cheliped, namely that from Stat. 96, which is 18,5 mm. 

 long. Merus a little more than 3-times as long as broad. Chela measuring two-thirds the length 

 of the carapace, 4-times as long as high, fingers a little longer than the palm, the 

 proportion being 1,1 ; palm and fingers hairy on the inner side, without grooves or notches, 

 dactylus simple, teeth at either side of the articulation rudimentary. 



In the adult male from Stat. 49 a the carpal segments of the second legs are 1,2 mm., 

 1,08 mm., 0,4 mm., 0,4 mm. and 0,68 mm. long, the chela 1,14111111. long (palm 0,54111111., 

 fingers 0,6 mm.); in a very young male these numbers are in the same succession 0,78 mm., 

 0,7 mm., 0,28111111., 0,28 mm. and 0,44 mm., chela 0,83 mm. (palm 0,37111111., fingers 0,46 mm.) 

 and in an ova-bearing female the carpal segments are 1,35111111., 1,3 mm., 0,44111111., 0,46111111. 

 and 0,68 mm. long, the chela 1,32 mm. long (palm 0,6 mm., fingers 0,72 mm.). In this variety 

 the second segment is a little shorter than the first and the segments show a rather 

 not slender form, the third e. g. being 1,65 — 1,85-times as long as thick. Ischium of third 

 and fourth legs, like in the typical species, with a movable spine. Merus of third legs less 

 slender than in the typical species, being in the adult male and in the adult female 5, 4-times 

 as long as broad in the middle ; distal extremity of the lower margin rounded, not acute. 

 Propodus 1,35-times as long as the carpus, with 8 pairs of spinules; dactylus almost half as 

 long as the propodus. The propodus and the carpus are rather hairy, like in the typical 

 species, some setae occur also on the merus. 



f 60. AlpJicus leptochiroid.es de Man. 



J. G. DE MAN, in: Tijdschr. d. Ned. Dierk. Vereen. (2) Dl. XI, 1909, p. 1 10. 



Stat. 260. December 16 and 18. 5°36'.5S., I32°55'.2E. 2,3 miles N. 63 W. from the North 

 point of Nuhu Jaan, Kei-islands. 90 m. Sand, coral and shells. 1 male. 



289 



SIBOGA-EXPEDITIE XXXIX fl'. 54 



