-Goree Island, Senegambia. 219 
lateral margins are on one side obsolete and on the other dis- 
cernible only by a lens of considerable power; the frontal 
teeth are less regular, and separated by somewhat shallower 
incisions ; so that, had the larger specimen not been available 
for comparison, the identity of the smaller with Milne-Edwards’s 
species might well have been questioned. 
This is a very interesting acquisition, the species having 
been hitherto a desideratum in the Museum collection. 
Its near affinity with the Oriental G. erythrodactylum, 
noted by Milne-Hdwards, is unquestionable; but in adult 
individuals of that species there are only two rudimentary 
denticles in the interspaces between the three anterior teeth 
of the antero-lateral margins; moreover, in the specimens I 
have seen of G. erythrodactylum, the carapace is smooth and 
naked, whereas in G'. Millert¢ it is clothed by a short pubes- 
cence. 
Since the above was written a larger female has been re- 
ceived from Baron Hermann-Maltzam, from Goree Bay. 
Length nearly 10 lines (21 millim.), breadth about 1 inch 
2 lines (80 millim.). 
Portunus corrugatus (Pennant). 
Here are referred several specimens in the collection ; they 
are of the typical form, with distinctly defined frontal lobes. 
The wide Oriental range of this common European species 1 
have already noted*; and the fact of its occurrence in the 
Atlantic region, as far southward on the west coast of Africa 
as Senegambia, is not without interest. 
Portunus pusillus, Leach. 
Three examples, a male and two females, are in the collec- 
tion, which agree in all particulars with Mediterranean speci- 
mens. 
There are in the British Museum examples from the Cana- 
ries (2. MacAndrew, Esq.). 
Portunus pusillus, has much aflinity with Portumnus afri- 
canus (A. M.-Edw.) and P. nasutus (Latreille), and it is 
indeed difficult to cite any certain differences by which these 
species may be distinguished from Portunus. 
P. pusillus has evidently a wide geographical range, being 
found on the British coasts as far north as the Shetlands, from 
which locality there are specimens in the British-Museum 
collection. 
It is one of the British species recently mentioned by Mr. 
* “On a Collection of Crustacea from the Corean and Japanese Seas,” 
Proc, Zool. Soc. 1879, p. 33. 
15* 
