Goree Island, Senegambia. 279 
more nearly equal chelipedes, and long twisted and longitu- 
dinally canaliculated joints to the second and third ambulatory 
legs. 
“The cephalothorax and legs are slightly pubescent. The 
carapace is rather broad in proportion to its length, and is of 
a thin and almost membranaceous texture. ‘There is no dis- 
tinct median rostriform projection, the carapace between the 
eyes being rather broadly rounded, and leaving the ophthalmic 
segment at this part partially visible. The cervical suture is 
very distinct. The terminal postabdominal segment is divided 
by a narrow almost closed longitudinal median fissure; and 
the lobes are armed on their distal and outer margin with ten 
to eleven small spinules. The eye-peduncles are short and 
thick, the cornese somewhat dilated ; and the eyes do not reach 
beyond the apices of the acicles of the antenne ; the scales at 
base of the ophthalmic peduncles are broad, entire, subtrun- 
eated at the distal ends. The antennules are short, with two 
flagella; the last joint of the slender peduncle nearly as long 
as the eye-stalks, the upper flagellum fringed on its under 
surface with long hairs. Antenne: about as long as the animal, 
the last joint of the peduncle little longer than the preceding ; 
the slender acicle scarcely reaching beyond the end of the 
penultimate joint ; the outer maxillipedes reach (when thrown 
forward) considerably beyond the antennules ; the joints are 
hairy on their under surface at their distal ends. The chelipedes 
are of about equal length ; the right, however, is more robust 
than the left; merus short, with two small denticles near the 
distal end on its under surface; carpus about as long as the 
palm, with about haif a dozen small spinules of unequal length 
near the distal end of its imner and upper margin; hand 
ovate, palm about as long as fingers, smooth on its outer sur- 
face, its upper margin without spinules, its lower subacute ; 
fingers meeting along their inner edges when closed, acute 
at apices, and very indistinctly denticulated on their inner 
margins. The left chelipede is very similar to the right, but 
the joints are slenderer. Second and third legs robust, with 
the fourth to sixth jomts thick, nearly smooth; fourth joint 
with transverse short impressed lines, fringed with short sete 
on its outer surface ; on the fifth joints these lines are longi- 
tudinal, and on the sixth oblique; dactyli slender, much 
longer than the penultimate joints, fringed above with long 
hairs, and deeply longitudinally channelled on their outer 
surfaces. ‘The fourth legs are wanting in the single specimen 
examined; the fifth are slender, feeble, and are apparently 
not chelate, the last joint being densely hairy on its under 
surface and at its distal end; the spirally-coiled genital ap- 
