Goree Island, Senegambia. 217 
Neptunus (Amphitrite) inequalis, sp. n. 
(BIXaUE is 5G.) 
Carapace rather convex, closely pubescent and granulated ; 
the granules disposed in series upon the more elevated parts 
of the gastric, cardiac, and branchial regions ; on the gastric 
region the granulated prominences are disposed in a cruciform 
figure, behind which are two closely approximated tubercules 
in the median line ; two similar submedian prominences exist 
on the cardiac region, and three oblique granulated elevations 
on each branchial region ; from the long lateral epibranchial 
spines a line of granulations extends on each side to the hepatic 
region, where it is bifurcated. Front with six lobes, of which 
the two median are small, the next on each side prominent 
and triangulate, and the outer (or inner orbital lobe) broadly 
rounded. ‘The antero-lateral marginal teeth are spiniform and 
acute; the ninth (or lateral epibranchial) tooth very long, 
in the largest individual about one third as long as the greatest 
width of the carapace. No spines at the postero-lateral angles 
of the carapace. Postabdomen (in the male) subtriangulate, 
not T-shaped, as in Callinectes. Anterior legs slender and 
somewhat elongated; arm or merus with four or five spines 
on its anterior margin, and one at the distal extremity of its 
posterior margin ; wrist or carpus with a strong spine on its 
inner and outer surfaces; palm slender and elongated, with 
two spines on its upper margin (one just above the articula- 
tion of the dactylus, and the other a short distance behind it), 
and with a third spine just above the articulation with the 
wrist. Ambulatory legs slender; fifth pair having the merus 
joint unarmed, and the terminal joint ovate, ciliated, and 
rounded at the distal end. Colour (of spirit-specimens) light 
yellowish, inclining to pink; fingers variegated with reddish 
or purplish. Length of largest individual (a female with 
ova) about 7 lines (15 millim.), breadth to base of lateral 
epibranchial spines 113 lines (24 millim.). Length of cheli- 
pede, when extended, 1 inch 64 lines (39 millim.). 
The description is taken from the largest example; three 
other smaller speciméns are in the collection, two of which are 
males. In the smaller specimens the elevations of the cara- 
pace are less distinctly marked, the two anterior gastric pro- 
minences being indeed obsolete: the teeth of the antero-lateral 
margins are less spiniform; but the full number are developed 
even in the smallest example, which measures scarcely 3 lines 
(6 millim.) in length. 
In many particulars this species is nearly allied to the 
West-Indian Neptunus Gibbesit, Stimpson, but may be dis- 
Ann. & Mag. N. Hist. Ser. 5. Vol. vii. 15 
