88 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
Dimensions of the largest specimen :— 
millim. 
Length of the cephalothorax (without the abdomen). 39 
Distance between the external orbital angles...... 364 
Distance between the tips of the last antero-lateral 
teeth, being the breadth of the cephalothorax .. 63 
Distance between the tips of the external frontal 
teeth, 7. e. between the internal orbital angles = 
breadth of the front “i... 2s...4: (6m a. eee 21 
Length of the penultimate joint of the male abdomen. 52 
Breadth of the posterior margin of this joint...... 6 
Length of the larger hand (the fingers included) .. 444 
Tenethjof the fingers: 270.06 os. coe eee 21 
Height of the hand at the base of the fingers...... 14 
A female of a species of Goniosoma from Amboina, preserved 
in the Leyden Museum, and referred by me some years ago to 
G. annulatum, Fabr., agrees completely with the Mergui speci- 
mens, except that the last antero-lateral tooth is only as long 
as the fifth and not longer. I regard this form as a local 
variety. 
G. luciferum, Fabr.= G. quadrimaculatum, A. M.-Edw., G. an- 
nulatum, Fabr., and G. japonicum, de Haan, are all closely allied to 
G. merguiense. They may be distinguished from it at first sight 
by the absence of the spine on the carpopodite of the natatory 
legs. In G. japonicum the long crests of the hands are always 
distinctly granular; the penultimate joint of the male abdomen 
is differently formed; the penultimate joint of the natatory legs 
is unarmed; the meropodites of the natatory legs are more 
enlarged ; and the last antero-lateral tooth is the smallest 
of all. 
Subtribe Catometopa. 
Genus Evcrarte, de Haan. 
Mr. Miers supposes that the genera Pseudorhombila, M.-Edw., 
Carcinoplax, M.-Edw., Eucrate, de Haan, and Pilwmnoplaz, 
Stimps., will prove to be identical, when they come to be sub- 
mitted to a thorough revision. In my opinion, however, the 
genus Hucrate, de Haan, must be retained; for this genus is 
a very natural one, distinguished not only by its entire physio- 
gnomy, but also by the structure of the external antenne. In 
