256 
ZOOLOGY OF THE FAR EAST. 
Locality. 
CO 
Lampam 
Singgora 
cT 
d 
2 
? 
9 
o 
Eh 
174 
168 
156 
173 
199 
175 
148 
139 
128 
(LI 
tJ 
rt 
Ph 
CS 
Vh 
o 
<+-! 
O 
a 
<u 
a< 
a 
<-lH 
0 ^3 
0 
J3 
o, 
0 
0; 
n 
42 
46 
39 
46 
53 
42 
34 
32 
29 
132 
140 
115 
205 
166 
117 
88 
80 
73 
Second peraeopod : length of 
a 
o 
23 
23 
21 
28 
29 
23 
18 
16 
14 
25 
26 
22 
44 
33 
23 
18 
15 
14 
:3 
Oh 
CO 
O 
29 
29 
26 
48 
37 
30 
23 
20 
20 
«i 
e 
(Xi 
Q 
28 
25 
32 
29 
24 
20 
48 
37 
35 
29 
22 
16 
16 
12 
14 
II 
12 
10 
There are also in the collection two very small individuals, 43 and 46 mm. 
in total length, that I consider to be young examples of this species. They were 
obtained in the Patani river, below the town of Patani in the Siamese Malay States. 
In the Indian Museum collections I have not been able to find any specimens of 
P. carcinus as small as these; the youngest, which are from Garia, near Calcutta, 
being 65 and 69 mm. in total length. 
In the larger of the Patani river specimens the rostrum extends beyond the 
antennal scale by about one-quarter its length, and bears 12 teeth above and 10 below. 
In the smaller individual the rostrum reaches beyond the scale by about one third of 
its length, and bears 14 teeth above and 11 below. In the young specimens from 
Garia the rostrum is fully as long as in the smaller Patani individual, and bears 13 or 
14 teeth above and 12 or 14 below. The second legs in both Patani specimens reach 
beyond the end of the scale by the length of the chela — ^in those from Garia by the 
chela and fully one-third of the carpus. The segments yield the following measure- 
ments (in mm.) :- — 
Locality. 
Garia, nr. Calcutta 
Patani river 
to 
e 
o 
Eh 
69 
63 
46 
43 
01 
o 
u 
ca 
o 
C 
01 
147 
14-0 
9'8 
8-4 
01 
5 o 
Second peraeopod : length of 
39 
37 
25 
19-5 
Ischium. 
Merus. 
Carpus. 
Palm. 
Dactylus. 
7-8 
8-1 
ii-o 
6-5 
4-6 
7-6 
7-9 
10-8 
5-8 
4-1 
5-1 
52 
6-6 
3-6 
2-4 
4-2 
4-3 
5 3 
3'i 
1-8 
' In the largest specimen, which is evidently a male, the appendix masculina is represented by a small bud; in the 
others no trace of it can be detected. 
