MONOGRAPH OF THE LEUCOSIADÆ. 307 
Oreophorus reticulatus, Adams and White, Crust. Voy. of the Samarang, p. 54. t. 6. f. 1. 
Hab. in Mari orientali. Mus. Brit. 
Readily distinguished from the other species by the enormous development of the 
fingers, the immoveable one being half as long as it is broad, and both twice as long as 
the hand. It is beautifully figured in the work above referred to. 
OREOPHORUS NODOSUS, mihi (Tas. XXXIII. fig. 8). Testà nodosà, margine undato ; 
manu tumida, ad margines carinatá, bisulcatà, digitis longiore. 
Hab. ? Mus. Brit. 
Carapace generally rugose, but without the deep hollows which are seen in O. reticu- 
latus, or the regular elevated carinæ on the branchial region of O. horridus. It is of a 
general semicircular form, with irregularly waved margin, a strong projection on the 
hepatic region, a large prominence on the anterior, and a double one on the posterior part 
of the branchial region ; front emarginate. External pedipalps with the outer stalk slightly 
arched; the inner with a longitudinal groove close to the inner edge, and a slight carina 
along the middle line. Anterior legs of moderate length and size, the arm nodose, the 
hand inflated, with two longitudinal sulci, and an external and internal carina; the fingers 
slender, curved, and shorter than the hand. The abdomen is wanting in the only specimen 
known, which is a male. 
Length of carapace 0°7 in.; breadth 0:8. ; 
The specimen in the British Museum is, I think, doubtless an old and faded one, and is 
consequently thin and slight compared with its original condition. It is of a delicate pink 
colour. | | 
Genus Nunzs1A, Leach. 
Cuar. Gen.—Testa polyhedra, fronte producto. Orbita extrorsümyaperta. Fosse antennarie transverse. 
Pedipalpi externi caule exteriore curvo, dilatato, anticè et posticè obtuso ; caule — — 
' interno recto, articulo penultimo quadrato, ultimo triangulari. Pedes antici digitis deflexis. 
men Manis articulo penultimo apicem prope processu dentiformi instructum. 
Nursia PLICATA, Herbst (Tas. XXXIV. fig. 4). Testà utrinque m medio tuber- 
eulis tribus triangulum delineantibus, posticè lined elevatä transv tubereulum 
gerente, fronte 4-dentato. | 
Cancer plicatus, Herbst, iii. No. 253. t. 59. f. 2. 
Nursia Hardwickii, Leach, Zool. Misc. iii. p. 20. 
Hab. in oceano Indico. Mus. Brit. : 
Carapace somewhat broader than it is long, produced anteriorly, granulated uu 
between the hepatic and branchial regions, the latter tumid, vr ens i u 
gin with four obtusely triangular dentiform projections, of which the posteri 
: nsiderably beyond the line continued from the lateral mar- 
most prominent, projecting co : i betw 
gin of. the ies The anterior regions are carina ted, - Din him 
the hepatic and branchial regions, each te "M^ 28 
VOL. XXI. 
