﻿352 The Philippine Journal of Science 1914 



mentioned in the description of the large male as being present 

 along the outer and inner sides of the cutting edge of the mobile 

 finger and along the inner side of the immobile finger cannot be 

 seen in the smallest males (Nos. la and 2) nor in any of the 

 females except No. 39, in which they are slightly developed. 

 In the smallest young mature male (No. 3) they show slightly, 

 becoming better developed in specimens of larger size (Nos. 4, 

 6, 11, 13, 15, 23). "Males feminises," when sufficiently large 

 (Nos. 7, 8, 9, 10, 12, 14, 16, 17, 18, 19, 20, 21, 22, 24, 25, 27), 

 show the tubercles, but in one of these, No. 17, the row on the 

 outer border of the cutting edge of the mobile finger is re- 

 presented by only 2 tubercles. In No. 18 this row is not present, 

 but the inner row on each finger is well developed, while in 

 Nos. 7, 8, 9, and 10 only very few tubercles along the inner 

 border of both fingers are seen. Numbers 14, 16, 20, 21, 22, 

 24, and 25 show the characteristic 2 rows on the mobile and 

 1 row on the immobile finger. 



The palm in specimens of all sizes and sexes is similar in shape 

 to that of the larger male already described. In young speci- 

 mens the fingers are a little shorter than the palm (1: 1.22 in 

 No. la), but as the body length increases the palm grows faster 

 than the fingers, until in the oldest male the fingers are only 

 a little more than half the length of the palm. It is probable 

 that smaller specimens than those in our collection would show 

 the fingers equal to, or even shorter than, the palm. 



The carpus, which is cylindrical in cross section and a little 

 shorter than the propodus in all our specimens, increases grad- 

 ually in diameter, passing from the distal to the proximal end. 

 The palm is always shorter than the carpus, but a comparison 

 of lengths at different ages indicates, in general, that the palm 

 grows a little faster than the carpus, although considerable 

 variability is seen in a series arranged according to the body 

 length. 



The relative lengths of the merus and carpus are shown in 

 Table II, where the specimens are arranged according to increas- 

 ing body length. Here again much variability appears, but if 

 the young mature males are separated the variability is not so 

 marked. The proportions given in Table II show clearly that, in 

 general, the merus of the male does not increase in length as 

 fast as the carpus. This condition is not evident in the small 

 number of females we have in the collection. A similar and no 

 less striking increase in the proportion of the merus to the car- 

 pus may be seen in the specimens of P. ritsemae de Man examined 



