214 Mr. HE. J. Miers on Crustacea from 
fingers black or pale brown, with lighter tips. Ambulatory 
legs short, compressed, the hairs most dense on the merus 
jomts. In spirit-specimens the chelipedes are often orange or 
reddish, and the carapace with more or less trace of reddish 
coloration upon a paler ground. None of the specimens 
before me are so large as Milne-Hdwards’s type, the largest 
not 7 lines (14 millim.) in length, and a little under 10 lines 
(20 millim.) in breadth. 
X. pilipes has been hitherto a desideratum in the collection 
of the British Museum. 
X. parvulus (Fabr.), Milne-Edwards* (a species found 
in the West Indies and on the coast of Brazil, and which, 
according to Dana, occurs at the Cape-Verds), has an ex- 
tremely strong tooth at the base of the mobile finger, which 
does not exist in the specimens I refer to X. pilipes. 
In X. minor, Danat, from Madeira and the Cape-Verds, 
the upper margin of the hand is deeply suleated; and in 
specimens I refer with some hesitation to this species in the 
Museum collection from Madeira (Rev. R. B. Watson), the 
chelipedes are much slenderer, hand and carpus more rugose 
and tuberculated. 
Leptodius punctatus, sp.n. (Pl. XIII. fig. 3.) 
Carapace moderately convex, about one and a half times 
as broad as long, the convexities on the anterior part of its 
upper surface prominent and separated by strongly-marked 
and rather wide depressions ; these elevations are pitted with 
scattered punctuations; but the intervening depressions and 
the flat posterior and postero-lateral regions of the carapace 
are smooth. Front bisinuated and with a median incision, 
thus divided into four rounded and not prominent lobes, the 
frontal margin and the upper orbital margins somewhat 
thickened. Antero-lateral margins of the carapace with the - 
four posterior teeth distinct and somewhat tuberculiform ; the 
tooth at the exterior orbital angle obsolete. Postabdomen of 
the male narrow, composed of only five distinct segments ; 
terminal segment triangulate. Outer maxillipedes having the 
merus joint transverse and marked with a circular pit on its 
outer surface. Anterior legs or chelipedes (in the two speci- 
mens examined) robust; merus or arm short; carpus or wrist 
pitted on its upper and outer surfaces, smooth on its inner 
surface, with a blunt tooth at its antero-internal angle; palm 
pitted above and on the upper part of its outer surface, smooth 
* Hist. Nat. Crust. i. p. 395 (1884). 
+ Cr. U.S. Expl. Exp. xiii. p. 169, pl. viii. fig. 7 (1852). 
