112 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
wholly smooth and devoid of granulations. Sometimes, as in 
the specimen which I have figured (fig. 4), the index is a little 
shorter than the thumb, but this may be abnormal. 
At a somewhat earlier age the fingers are comparatively less 
elongate ; a very accurate figure of the hand of such a specimen 
has been published by Hilgendorf (J. ¢. fig.1¢). In still younger 
individuals, in which the distance between the external orbital 
angles measures 20 millim., and in which the hand is only 21 
millim. long, the palm presents nearly the same length as the 
fingers (fig. 7). In specimens in which the distance between 
the external orbital angles measures only 10 millim., and the 
larger hand of which is 7-8 millim. long, the fingers are even 
a little shorter than the palm. 
For the form of the ambulatory legs, which are tolerably slender 
in this species, I refer the reader to my figure and to that given 
by Mr. Hilgendorf. The following details, however, may be 
mentioned. The upper margin of the meropodites of the adult 
male is minutely granular along the distal, and hairy along the 
proximal half; along the upper and under margins of the mero- 
podites of the three anterior ambulatory legs of the female this 
granulation is much more developed, the acute granules of the 
upper margins being arranged in two rows close to one another. 
In the female a tuft of close short hairs occurs along the under 
(posterior) margin of the meropodites of the last pair of legs; 
but it is absent in the male. 
The cephalothorax of some of these specimens, preserved in 
spirit, is dark bluish, whilst in others it is dark green ; the larger 
hand is yellowish or reddish brown. 
Dimensions of an adult male specimen :— 
millim. 
Distance between the external orbital angles.. 33 
Length of the carapace (front included) .... 19 
Length of the posterior margin between the 
insertion of the last pair of legs .......... 13 
Length ot the larger hand; .<....2::4-.ee ie 60 
Middle length or the palm! “si.0 ca eee 20 
Length of the fmeers. <2 s24... ote ee 40 
Among the other species of Gelasimus which inhabit the 
Indo-Pacific Ocean, this species appears to be most closely 
allied to G. arcuatus, de Haan, which, however, may be distin- 
