Mr. E. J. Miers on Ocypoda. Sit Cee 
have not thought it necessary to reproduce the synonymical 
references which have already been given by Kingsley. 
For the correct identification of a species of Ocypoda it is 
necessary to have adult examples, since the characters are 
subject to great variation or are even totally lost in younger 
specimens, on which I doubt not several of the nominal 
species characterized by former authors have been founded. 
Even Mr. Kingsley, extensive as are his synonymical cita- 
tions, has probably admitted two or three which an examina- 
tion of the types would show to have been established upon 
insufficient grounds. 
I admit in all ten apparently well-established species, and 
also one species (Q. africana, De Man) which I must regard 
as of doubtful permanence, but which is not at present repre- 
sented in the British-Museum collection. Of these species 
four (O. egyptiaca, O. rotundata, O. Kuhlii, and O. afrt- 
cana) are not included in Kingsley’s report; but O. rotun- 
data and O. africana were not described at the time of its 
publication. On the other hand, Mr. Kingsley admits three 
species (O. Upvillec, Guérin, O. convexa, Quoy and Gai- 
mard, and O. Ryderz, Kingsley) on, as it seems to me, insuffi- 
cient grounds ; but of O. Ryderi I have seen no specimens, 
and this species is, moreover, but very briefly characterized. 
Of the species referred to in the following notes, three (Ocy- 
poda ceratophthalma, O. Kuhlit, and O. cordimana) are widely 
distributed through the Oriental region; O. cursor occurs on 
the coasts of the Mediterranean and also in the Red Sea 
(Heller), and at the Canaries, Cape-Verds, and on the West- 
African coasts southward to Acra d’Elmina; O. arenaria 
ranges along the.east American coast from New Jersey 
southward to Rio de Janeiro, Brazil; O. Gaudichaudit along 
the western coast of the same continent from Panama to Chile ; 
O. egyptiaca occurs on the Red-Sea coasts and also at Nossy 
Faly, Madagascar (Hoffmann) ; O. rotundata is only known 
from the west coast of India; O. macrocera and O. platy- 
tarsis occur on the coasts of India (0. platytarsis also at 
Ceylon), and both species are also recorded by Heller from the 
Nicobars and Tahiti. O. africana, De Man (a species which 
I have not seen, but must regard as doubtfully distinct from 
O. Kuhlit), is found on the coasts of Liberia and the Congo. 
Some other localities given for certain species are probably 
erroneous, as (e.g.) Brazil for O. macrocera, mentioned by 
Milne-Edwards in his earlier but not in his later account of 
the genus *. 
* See Hist. Nat. Crustacés, ii. p. 49 (1837); Ann. Sci. Nat. sér. 3, 
xviii. p. 142 (1852). ; 
