CRUSTACEA OF THE MERGUI ARCHIPELAGO. 39 
mian regions and the inflected sides of the carapace are smooth ; 
the latter are hairy on the posterior half, above the bases of the 
legs. As regards the shape and structure of the outer foot-jaws, 
this species fully agrees with Myom. granulosa. 
The anterior legs greatly resemble those of yom. granulosa, 
but they are everywhere completely smooth, though sparsely 
punctate. They are as unequal as in that species, the right leg 
in all the specimens being largest. The upper margin of the 
arm, which is fringed with short hairs, does not present a small 
acute spine at its distal end. The internal angle of the wrist is 
slightly prominent, rounded and obtuse. The larger hand is but 
little shorter than the greatest width of the cephalothorax and 
about twice as long as high. In the shape of the palm and of 
the fingers, and in the armature of the latter, this species closely 
resembles Myom. granulosa. Theambulatory legs of both species 
are very similar to one another, the three terminal joints being 
rather hairy. 
Dimensions of a large male specimen :— 
millim 
Kength of the cephalothorax...........0.0.+.- 40 
Greatest width of the cephalothorax .......... 58 
Distance of the internal angles of the upper orbital 
IDOE PEOARINS). sO a ne en eae re 123 
iemetheowthe larger hand)... 2.20.0... 0. .% 54 
lcioitrot the larger hand). .'2...02 «06.5.0. soe « 25 
Menippe Rumphii, Fabr., inhabits the Bay of Bengal and the 
neighbouring seas, being recorded by Fabricius from the coast 
of Tranquebar, and by Heller (as Menippe Belangeri) from the 
Nicobar Islands, whereas the above described specimen was col- 
lected by Mr. J. A. Kruyt on the coast of Atjeh (Sumatra). 
Genus Myomentrpz, Hilgendorf. 
The genera Menippe and Myomenippe stand greatly in need 
of revision, much confusion being still found in the synonymy 
of their species. The genus Myomenippe chiefly differs from 
Menippe by the external antenne being quite excluded from the 
orbits, the inferior margin of which is united with the upper 
“margin, as in the genus Huruppellia, Miers. 
