1895.] A. Alcock —Garcinological Fauna of India. 285 
rostrum is obsolete, not breaking the general oval outline. The eyes 
are small; and the orbits are nearly circular, with two sutures in the 
upper border, and a hiatus at the inner inferior angle, which is filled 
by the second joint of the antennary peduncle. 
The antennulary fossae are squarish, and are nearly filled by the 
large angular basal joint, internal to which the rest of the antennule 
folds obliquely. 
The basal antennal joint is oblong and angular, and reaches to the 
internal orbital cantlius : the antennary flagella are rudimentary. 
The external maxillipeds completely close the buccal frame : their 
inner border is extremely straight and sharp cut: their palp is inserted 
at the antero-internal angle of the merus, and folds out of sight. 
The chelipeds are about equal in length to the carapace: they 
have somewhat the Lambrus form — having sharply prismatic joints 
and large inturned fingers, but are concave on the upper surface. 
The ambulatory legs are short, and decrease gradually in length : 
they are all strongly dentate-carinate, or cristate. 
The abdomen of the female (and young male) consists of seven 
segments. 
Oethra scruposa, L. 
[Cancer scruposus, Linn., Mus. Lud. Ulr., p. 450.] 
Cancer polynome, Herbst, III. ii. 23, tab. liii. figs. 4-5. 
[ Oethra depressa, Lamk., Hist. Anim. Sans. Vert., V. 265.] 
Oethra depressa, Desmarest, Consid. Crust., p. 110, pi. x. fig. 2. 
[Oethra depressa, Guerin, Icon. R. A., pi. xii. fig. 3.] 
Oethra scruposa, Milne-Edwards, Hist. Hat. Crust., I. 371. 
Oethra scruposa, Cuv., R. A., pi. xxxviii. fig. 2. 
Oethra scruposa, Stimpson, Proc. Ac. Hat. Sci., Philad., 1857, p. 221. 
Oethra scruposa, A. M.-Edw., in Maillard’s Pile Reunion, Annexe F., p. 3 ; and 
Houv. Archiv. du Mus., VIII. 1872, p. 263. 
Oethra scruposa, Henderson, Trans. Linn. Soc., Zool., (2) V. 1893, p. 351. 
[Oethra scruposa, F. Muller, Verh. Ges., Basel, VIII. 473.] 
{Oethra scruposa, var. scutata A. Milne-Edwards, Miss. Sci. Mex., Crust., I. p. 
170, pi. xxxi. fig. 2 = Oethra scutata, S. I. Smith, Amer. Journ. Sci., etc., XLVIII. 
1869, p. 120; and Ann. Mag. Hat. Hist., 1869, Vol. IV. p. 230, is considered by M. 
A. Milne-Edwards to be only a variety of the Linnasan type.) 
The autero-lateral borders are divided into 6 or 7 indistinct lobes 
by deep narrow sutures, each fold being again subdivided near the 
edge by a faint crest. 
The gastric region is extremely prominent, and is divided into two 
lobes by a broad longitudinal channel, each lobe being sparsely granular : 
the branchial regions are also somewhat convex near their middle, the 
