164 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
13: 94, whilst in WZ distinctus it is 13:8. In both species the 
mobile finger does not present the prominent lobe on its inner 
margin which characterizes If. elegans and MW. intermedius. The 
fingers are less gaping at their bases than those of IL. distinctus, 
and the prominent lobe along the proximal half of the inner margin 
of the index is less prominent in this species. The inner surface 
and the upper and under margins of the palm are minutely gra- 
nular, as also the upper margin of the mobile finger. Thesmaller 
hand resembles the larger, but the index presents no prominent 
lobe, so that the minutely denticulate inner margins of the 
fingers fit perfectly close together. In younger male specimens 
the hands are equal and much smaller, and the fingers perfectly 
close together, leaving no gap between them. 
In young female specimens, the cephalothorax of which is 18 
or 14 millim. broad, the chelipedes are equal and very small 
(see Heller, 2. c.), and their fingers are as long as, or even 
slightly longer than, the palm. I am unable to describe the 
chelipedes of the adult female, the collection containing no adult 
female specimens. 
The ambulatory legs of IL. dentipes wholly agree with those of 
M. distinctus, not only in their length and the relative length of 
the joints, but also in the armature of their meropodites, which 
have already been fully described by Heller. 
This species therefore differs from JZ. distinctus by its larger 
size, by its less enlarged and more quadrate carapace, by the 
structure of its infraorbital ridges, and by the form of its 
chelipedes. 
The largest male specimen is 25; millim. broad, and 182 
millim. long, and the ambulatory legs of the penultimate pair 
measure 55 millim., 
Metaplax dentipes was discovered by Heller at Ceylon. 
89. Merarnax ELEGANS, n. sp. (PI. XI. figs. 4-6.) 
The collection contains the large number of twenty-nine 
specimens, fifteen of which were found at Mergui. 
As this new species is closely allied to Mf. distinctus, M.-Edw., 
only its distinctive characters need be recorded. 
Metaplax elegans scarcely attains the size of M. distinctus, 
the largest specimen in the collection being a little smaller 
than the two specimens of the latter species described above. 
As regards the shape of the cephalothorax, both species closely 
