Goree Island, Senegambia. 269 
length of chelipede, when extended, about 7 lines (nearly 
15 millim.). 
In the females the lobes of the posterior margin of the cara- 
pace are not distinct one from another, so that the posterior 
margin appears nearly straight. 
This species is evidently very nearly allied to #. Cranchii, 
but is more coarsely granulated, the two anterior of the tuber- 
cles of the gastric region are much less distinct, the palm of 
the chelipedes in the male slenderer and more elongated. 
Moreover, in EL. Cranchit the exognath of the maxillipedes 
does not nearly reach to the distal end of the merus joint. 
Dorippe armata. (PI. XV. fig. 4.) 
Dorippe armata, White, List Cr. Brit. Mus. p. 54 (1847), descript. 
nulla. 
Several small examples are in the collection (males and 
females) ; length of the largest nearly 6 lines (12 millim.), 
breadth about 74 lines (16 millim.). 
The description that follows, as also the figure, is taken 
from White’s typical example, which is a male of much larger 
size, length of carapace about 10 lines (21 millim.), greatest 
breadth about 1 inch 1 line (28 millim.), and was obtained 
during the Congo expedition (J. Cranch). It is without pre- 
cise indication of locality. 
Carapace moderately convex, with the cervical and branchio- 
cardiacal sutures strongly defined. The branchial and cardiac 
regions are convex above and distinctly granulated. ‘The 
front between the orbits is concave ; the inner orbital angle is 
prominent, but scarcely spiniform; there is a spine at the 
outer orbital angle, and a very strong spine on the sides of the 
branchial regions at the widest part of the carapace. The 
inferior surface of the body is more or less hairy ; postabdomen 
7-jointed in both sexes; the third jot in the male with a 
transverse prominence ; terminal joint small, recerved into an 
excavation in the anterior margin of the penultimate joint, its 
distal half triangulate. Chelipedes (in the male) unequal ; 
the larger (which is the right in the specimen described) has 
the arm granulated on its outer surface, without spines or 
tubercles ; wrist granulated in its outer and proximal portion, 
without spines ; hand about as long as vertically deep; palm 
posteriorly rounded, smooth on its outer and inner surfaces ; 
fingers nearly straight, with acute apices, and only very ob- 
scurely denticulated on their inner margins. Smaller cheli- 
pede slender, with the fingers relatively longer and more dis- 
tinctly denticulated. Second and third legs more than twice 
