OF THE COASTS OF SOUTH AMERICA. 47 
and a little flattened, as in Herbst. condyliata. The orbits are large, and furnished with 
a tooth at the upper and inner angle, another at the outer angle, and a third, small and 
rounded, beneath; between which and the basilar joint of the external antenne isa 
considerable hiatus. The eyes are scarcely larger than their peduncles, which are of 
moderate length. 
The external antenne have the basilar joint broad and prominent, with a large tooth 
anteriorly, and a smaller one at the base of the latter: the second and third joints 
cylindrical, the latter extending a little beyond the rostrum. Internal antenne lodged 
in a circular hollow, having a raised margin, and a tooth in front, directed a little back- 
wards and downwards. External pedipalps with the second joint of the inner footstalk 
cordate. 
Abdomen of the male formed of seven joints of nearly equal length, becoming gra- 
dually narrower, and the terminal one rounded. The abdomen of the female nearly cir- 
cular. First pair of feet in the male more than twice as long as the post-frontal portion 
of the carapax, rather robust, and nearly cylindrical ; the hand rather larger than the 
other joints, perfectly smooth ; the claws rounded and minutely denticulated at the ex- 
tremity, slightly hollowed, and having one large strong tooth on the finger and another 
on the thumb. The remaining pairs decreasing in length from the second to the fifth; 
the third joint much larger than the others, with a row of small spines above, and 
sparsely hairy ; the nails very slightly curved. 
The general colour above is a greyish brown; beneath yellowish ; the anterior legs 
plumbeous, the others somewhat flesh-coloured. 
Length of the carapax 7 lines ; breadth 6+ lines. 
This species differs from Herbst. condyliata, which in most of its characters it much 
resembles, in its diminutive size, the greater proportional length of the anterior feet, 
and the absence of tubercles on the hands. 
A male and a female specimen were taken by Mr. Cuming at the Gallapagos Islands, 
in coral sand, at the depth of six fathoms. 
Genus THoE. 
Testa subtriangularis, depressa, horizontalis, rostro minimo, apice leviter fisso terminata. 
Orbita edentata, fissuris tribus inconspicuis. 
Oculi subretractiles, globosi, pedunculo brevi. 
Antenne interiores in fossula anticé tantim divisa insert. 
Antenne exteriores ad latera rostri insertz, rostro triplé longiores, extrorsim pilose, 
articulo basilari latissimo, anticé et posticé producto. 
Pedipalpi externi introrsim ciliati, caulis interni articulo primo subrhomboideo, secundo 
rotundato margine integro. 
Pedes antici manis reliquis longiores, brachiis supra et externé serie cellularum erosis ; 
