﻿334 The Philippine Journal of Science 1914 



laemon carcinus shows a condition similar to that found in 

 our form, except that the coating of hair extends a little farther 

 toward the tip. In the figure shown by Henderson and Matthai, 

 however, the pubescence extends to the tip of the finger. The 

 tips of both fingers curve inward in specimens of all ages, and 

 overlap when the fingers are closed. In young specimens with 

 a body length of about 150 millimeters or less, the fingers when 

 closed lie close together throughout their extent, but larger in- 

 dividuals have the fingers gaping. In old males the immobile 

 finger, which is curved less sharply at the tip than the mobile 

 finger, extends beyond the latter. The immobile finger of the 

 largest male presents 13 or 14 indistinct longitudinal rows of 

 small spines. Several of these rows, especially the one along 

 the cutting edge, are made up of larger spines than those of the 

 other rows. Near the tip of the finger the cutting edge disap- 

 pears and the number of rows of spines is reduced. Spines 

 are absent along the cutting edge and the region covered by the 

 felt of the mobile finger, but a few spines are to be seen along 

 the incurved tip. The cutting edge disappears near the tip. In 

 young males and females the fingers are spineless. 



The palm of the largest male in our collection measures 122 

 millimeters in length. It is flattened laterally at the distal 

 one-half, measuring 13 by 16 millimeters, but at the proximal 

 one-half it becomes almost cylindrical in cross section, measuring 

 about 15 millimeters in diameter. It presents about 18 lon- 

 gitudinal rows of spines, which in general are larger than those 

 on the fingers, and the rows on the inner surface are made up 

 of spines which are larger than those of the rows on the outer 

 surface. An average-sized spine of the larger kind measures 

 2 millimeters in length. The palm is marked on each lateral 

 surface by a longitudinal groove, and each of these grooves is 

 continued, except with a break at the joint, into a "linear space" 

 on the outer and inner surfaces, respectively, of the carpus which 

 is similar to that described by Hoffman, von Martens, and 

 Coutiere. The shape of the palm in all younger males and 

 females is the same as that of the old males. Males and females 

 of middle age show the characteristic rows of spines, but these 

 are not so conspicuous, and in young males and females they 

 are only visible with a lens. The grooves can be seen in speci- 

 mens of all ages and both sexes represented in our collection. 



The carpus in our largest male equals the palm in length, but 

 probably in larger specimens it is shorter. In the oldest fe- 

 males the palm is shorter than the carpus, and the same is 

 true of young individuals of both sexes. Table I shows that the 



