212 Mr. KE. J. Miers on Crustacea from 
pace and the obsolescence of the first and second antero-lateral 
marginal teeth. ‘To this genus (or subgenus, as I prefer to 
regard it) L. sexdentatus is to be referred. It differs from 
both the West-American species, LZ. lamellipes, Stim., and 
L,. bellus, Stim., in the much more prominent front and teeth 
of the antero-lateral margins. 
Prof. A. Milne-Edwards* has united with the Lophozozymus 
(Xantho) radiatus of M.-Edwards both the Xantho lamelligera 
and Atergatis lateralis of White. Yet more recently Dr. F. 
Hilgendorft has referred all these species to the Cancer 
dodone of Herbst. It appears to me very doubtful, however, 
whether these identifications can be sustained. In White’s 
specimens of A. lateralis in the British-Museum collection the 
chelipedes have the hands pitted and the wrist with a short 
keel or lobe (not two tubercles) on its inner surface, asin L. 
dodone, but there are no hairs on the antero-lateral marginal 
teeth, as described by Hilgendorf in that species. In Lopho- 
zocymus lamelliger, White, the carapace, as well as the 
chelipedes, is very distinctly granulated and pitted, the 
frontal lobes are sinuated, and the lobes of the antero-lateral 
margins granulated and very obscurely defined. ‘The carpus of 
the chelipedes is rather bluntly cristate on its inner margin. 
Xanthodes melanodactylus. 
Xanthodes melanodactylus, A. M.-Edwards, Nouv. Arch. Mus. Hist. 
Nat. iv. p. 60, pl. xvii. figs. 1-3 (1868). 
A large series is in the collection, all the specimens being 
of small size, the largest scarcely more than 3 lines (6:5 
millim.) in length and 5 lines (11 millim.) in breadth; the 
anterior legs are unequally developed, ordinarily the right, 
but more rarely the left, being the larger; in the smaller 
chelipede the palm is slenderer and the fingers bent down- 
wards, so that the lower margin of the smaller finger is not 
in a straight line with the inferior margin of the palm. The 
colour (of specimens preserved in spirit) is variable : sometimes 
the minute red punctulations on the carapace mentioned by 
M. A. Milne-Edwards are discernible, but in other examples 
they are quite obliterated; ordinarily the chelipedes are 
reddish: and the fingers black or dark-coloured, with paler 
tips; but in others these limbs are pale-coloured, and in some 
the fingers are purplish. These variations seem to afford 
evidence that the coloration is of little value in this genus as 
a specific distinction. 
* Nouy. Arch. Mus. Hist. Nat. ix. p. 206 (1878). 
+ Monatsh. der Akad. Wiss. Berlin, p. 789 (1878), 
