CRUSTACEA OF THE MERGUI ARCHIPELAGO. 29 
ot A. Milne-Edwards. The mobile finger is a little longer than 
the other ; both are pointed, sulcate, and punctate, and they are 
a little granular and hairy at the base; they are armed along 
their inner margins with some teeth, which are rather feeble in 
the female specimen, but strong in the male. The index of the 
latter is armed with a very strong tooth near the middle, and, 
moreover, with two or three smaller teeth between the first and 
the point; the mobile finger presents about six teeth, the two 
basal ones of which are a little larger than the others. These 
teeth, like the pointed tips, are of a white colour, and the 
inner surface of the index is provided with a tuft of short hairs. 
Regarding the other legs, I refer to the accurate figure of 
Krauss; the joints are granular along their upper and under 
surfaces or margins. The chelipedes, as as well as the ambulatory 
legs, are provided with tolerably long yellow hairs, which resemble 
those of the carapace. 
As regards Cancer scaber, Fabricius (Suppl. Eatom. Syst. p.336), 
I may observe that it is doubtless a different species, distin- 
guished at first sight from A. parvula by its unequal cheli- 
pedes, besides some other characters. But A. parvula cannot be 
identified with Milne-Edwards’s Xantho scaber (1. ¢. p. 390), a 
species described as being closely allied to A. setigera, although 
it has been referred to Fabricius’s species, because it has not 
been included among the species of Act@a described by Prof. A. 
Milne-Edwards in his Monograph of this genus. 
Acteéa parvula, de Haan, so far as I know, has hitherto been 
found only at the Cape and on the rocky coast of Natal. 
17. AcT#a, sp. 
The collection contains a small mutilated specimen of a 
species of Actea which I am unable to determine. This indi- 
vidual is only 7 millim. long and 103 millim. broad. It is closely 
allied to A. parvula, but the whole upper surface of the cephalo- 
thorax is lobed, the meropodites of the ambulatory legs are com- 
paratively more enlarged, and the legs are covered with much 
larger, though also conical, granules. 
This specimen, however, which was collected at Elphinstone 
Island, may prove to be the young of the preceding species. 
