•56 
ON THE BRACHYUROUS DECAPODS OF THE CAPE. 
china, which, as well as the Parthenopina, have the genital organs of the male hollowed out in 
the first joint of the hind feet. 
Stirps INACHINA, or Triangular Crabs. 
jfamtltfsh 
Normal Groupe. 
Macropodije, M. E. 
Feet long and slender. 
Aberrant Groupe. 
Maije, M. E. 
Feet of the ordinary size. 
5. Of the two first families I have no species from the Cape to describe. I proceed therefore 
to the third 
n Inachid^, M‘L. 
^2 Eurypodid.*, M‘L. 
3 Epiaj.tidje, M‘L. 
4 MlTHRACIDiE, M‘L. 
5 Huf.nid/E, M‘L. 
j Tigellus of external pedipalps inserted at the outer angle of 
1 their third joint. 
f Tigellus of external pedipalps inserted at the inner angle of 
1 their third joint. 
Eyes not concealable ; no orbitary groove, 
f Eyes concealable in an orbitary groove. Clypeus bifur - 
cate in the middle. 
f Eyes concealable in an orbitary groove. Clypeus pointed 
\ in the middle. 
Fam. EPIALTIDiE, Mihi. 
Sub-genus. Antilibinia, M'L. 
Cephalothorax short, convex, pear-shaped, as broad almost as long, with the sides dentated in 
front, and the clypeus short, triangular, with a bidentated apex, having a smaller tooth 
on each side. 
Orbit without any distinct fossula. 
Eyes minute, somewhat prominent, but scarcely moveable, and having a very short peduncle. 
Exterior antennae longer than the clypeus, with their first joint reaching its middle, and being 
three-sided at the apex, while the second and third joints are cylindrical, and the rest are 
short and setaceous. 
Internal antenna; inserted at the base of the rostrum, and having their basilar joint obconical 
and rather three-sided, while their second joint is shorter and cylindrical. 
External pedipalpi, or fifth pair of maxillae, with their outer palpus semifusiform, and the inner 
palpus having the second joint elongated with parallel sides, the third joint subquadrate, 
and the tigellus very small, inserted at its inner angle. 
Feet, first pair twice as long as body, with the chelae thick, having subacute digits, which are 
serrulated on the inside. The hinder pairs of feet are more slender. 
Abdomen wanting in my specimen, which is a male. 
This groupe I have called Antilibinia, because it is in the family Epialtidce exactly what 
Libinia is in the family Mitliracidce. It is only analogous to Libinia, for it has no grooves or 
orbit for the concealment of the eyes, which besides are neither moveable nor retractile. Libinia 
is a groupe peculiar to the New World ; but whether it and Antilibinia are sub-genera, or only 
sections of sub-genera, remains to be proved. 
