262 
ZOOLOGY OF THE FAR EAST. 
palm are thickly covered with small spinules which are larger on the inner and under 
sides of the carpus and palm where they tend to form longitudinal rows. These 
spinules are visible even in the smallest individuals. In the larger males and the 
oldest female the fingers are thickly clothed with hair. There are two small teeth 
on the inner margin of the dactylus near its proximal end and one similar tooth 
which fits between them on the fixed finger. 
Seven specimens yield the following measurements : — 
Sex. 
Total length. 
, Length of cara- 
pace. 
Length of 2nd 
peraeopod. 
Second per/ 
a 
leopod 
</> 
&, 
u 
: LENGTH OF 
tfi 
a ^ 
: Q 
<f 
76 
17-5 
77 
I2-I 
15-2 
230 
15-2 
T07 
71 
17-3 
61-5 
10*4 
II-5 
i6-8 
I2-I 
8-3 
d 
53 
11-3 
42-5 
8-0 
8-0 
12-4 
6-5 
6-4 
d 
43 
9-1 
32-0 
60 
6-2 
8-5 
47 
4-8 
9 
76 
21-3 
67 
12-4 
14-0 
i8-6 
117 
8-1 
? 
57 
13-5 
49 
8-8 
92 
14-2 
87 
6-3 
<f 
82 
217 
121 
i6-8 
23-0 
40-5 
32-0 
11-6 
It is doubtful if the last of these specimens, which is separately referred to below, 
is correctly referred to P. sundaicus. The measurements of the remainder tend to show 
that in the course of growth the palm increases considerably in length in proportion to 
the merus and fingers. In young males it is much shorter than the merus and little if 
at all longer than the fingers, whereas in large males it is equal to or a little longer 
than the merus and almost one and a half times as long as the fingers. 
In the male 76 mm. in length the carpus is 2 5 mm. in breadth at its distal 
end and the palm 2*4 mm., the segments being respectively about nine times and 
six and a third times as long as broad. In the female of the same length these 
measurements are 2 3 mm. and 2-5 mm., the carpus being eight times and the palm 
six and two thirds times as long as wide. 
If the figures tabulated above are analysed and compared with those given in other 
descriptions, certain smaU differences are evident ; these, however, do not appear to 
be sufficiently well marked to afford any basis for the foundation of a subspecies- 
In the males from the Tale Sap, for instance, the meras and carpus seem proportion- 
ately a trifle longer and the palm and dactylus a little shorter than in those described 
by de Man as P. sundaicus var.' and the same features may be detected if the Tale Sap 
females are compared with de Man's typical P. sundaicus from the Java Sea.^ 
I De Man, loc. cit., 1897, p. 783. 
2 DeMan, loc. cit., 1897, p. 782. 
