CRUSTACEA OF THE MERGUI ARCHIPELAGO. 203 
of the Kiel Museum. The types are a large adult and a smaller 
female, and both are labelled Leucosia globosa, Fabr. In the 
adult male the carpopodites of the anterior legs are distinctly 
granular along the inner margin of their upper surfaces, but its 
hands have a somewhat different appearance from those of the 
much smaller female. The cephalothorax of the adult male is 293 
millim. long, whilst that of the female is scarcely 17 millim. The 
hands of the latter completely resemble those of the Mergui 
specimens; but in the male the hands, and more especially the 
palm, are comparatively more enlarged and distinctly granular 
on the inner margin of the palm and of the immobile finger than 
in the female; the fingers are more deflexed, more strongly 
denticulated on their mner edges, and more distinctly longi- 
tudinally grooved on their outer and inner surfaces; and the 
mobile finger, moreover, is granular on its upper margin. 
These differences are doubtless attributable to the large size of 
the individual, for in its other characters the male perfectly 
agrees with the female. 
I have referred the Mergui specimens to Philyra globosa, 
because they perfectly agree with Fabricius’s female type. 
The cephalothorax of the Mergui specimens (excluding the 
epistome) is quite as long as broad; the convex upper surface 
presents no trace of divisional lines, but in the adult male 
specimen of Fabricius the branchio-cardiac grooves are faintly 
indicated. The upper surface is minutely punctate and covered 
with innumerable minute granules, which become a little more 
distinct towards the lateral margins. 
A continuous beaded line defines the lateral and posterior 
margins, and the granules forming it are alternately a little 
larger and smaller, as described by Milne-Edwards. The posterior 
margin of the cepbalothorax is rounded, but in a very young 
specimen, scarcely 4 millim. broad, a small angular prominence is 
present on each side, a juvenile character mentioned by Stimpson 
in his description of Leucosia vittata. The front is somewhat 
less prominent than the epistome, is a little deflexed, and 
broadly triangular, but rather acute in the middle. The upper 
orbital margin is marked with one or two fissures. The inflected 
sides of the cephalothorax are minutely granular. The ex- 
ternal margins of the stalks of the outer foot-jaws are granular 
in both sexes; in the female (not in the male) each stalk 
presents a longitudinal row of hairs close and parallel to the 
