REPORT ON THE BRACHYURA. 
239 
The adult male from Raine Island measures as follows : — 
Adult g. 
Lines. 
Millims. 
Length of carapace, about 
174 
37-5 
Breadth of carapace, nearly . 
20 
42 
In this specimen the terminal styles of the ocular peduncles are normally developed, 
and project considerably beyond the antero-lateral angles of the carapace, and the 
tubercles and striae of the stridulating ridge of the larger chelipede are distinct and well 
defined. 
In the larger specimens from Kandavu (length of carapace 12^ lines, 26 mm.) the 
terminal styles of the ocular peduncles are very short and tuberculiform, as in the variety 
of this species, designated by Milne Edwards Ocypoda brevicornis ; 1 in the smaller 
specimens (length of carapace 9 lines, 19 mm., or under), the ocular styles are obsolete 
and the eyes distally rounded. An adult female from Kandavu, which is probably an 
abnormal variety of this species, has short terminal ocular styles, but scarcely any trace 
of a stridulating ridge on the inner margin of the palm of the larger chelipede, and the 
fingers of the smaller chelipede are slightly dilated at the distal extremity, in which 
character this specimen exhibits some approach to Ocypoda macrocera. There is also in 
the Challenger collection a series of specimens (not fully grown) from the Arrou Islands, 
which I suppose belong to Ocypoda ceratophthalma rather than to Ocypoda kuhlii , 
because (although the terminal styles of the ocular peduncles are not developed) the 
stridulating ridge of the chelipedes (in the larger specimens in the series) is coarsely 
striated above, finely striated below, and the anterodateral angles of the carapace are but 
slightly prominent. 
Young specimens from the Philippine Islands (Samboangan, 10 fathoms), may belong 
either to this species or to Ocypoda kuhlii; they have no trace of the terminal ocular 
styles, but the stridulating ridge of the chelipedes is striated rather than tuberculated, as 
in Ocypoda kuhlii. 
A young male from Hilo, Sandwich Islands (beach) has no indications of ocular styles, 
but the stridulating ridge is coarsely and evenly striated, as in the adult examples from 
these islands referred to in my paper on the genus {tom. cit., p. 380). 
Small specimens of Ocypoda (too young to be assigned to any species with certainty) 
are in the Challenger collection/from the South Australian Coast, 2 to 10 fathoms 
(April 1874), from the beach at Botany Bay, and from Matuku, Fiji Islands, “fresh- 
water” (July 24, 1874). The length of the carapace in the largest of these specimens 
(that from Matuku) does not exceed lines (9 mm.). None present any indications of 
terminal ocular styles. In the specimen from Matuku, and in one from the South 
Australian Coast, a striated stridulating ridge is very obscurely indicated, and these 
specimens may also presumably be young examples of Ocypoda ceratophthalma. 
1 Hist. Nat. Crust., vol. ii. p. 48, 1837. 
