542 COLLECTION'S FROM TnE WESTERN INDIAN OCEAN. 



This example is a male of moderate size, and resembles the figure 

 of Milne-Edwards *, but differs from those of Hilgendorf t and Hoff- 

 mann j, who record this species from Zanzibar and Nossi-Be, in 

 having the tinners of the larger chelipede destitute of prominent 

 teeth or denticles ; the fingers are, however, less elongated than in M.- 

 Edwards's figure, based on specimens from Malabar and Sarnarang ; 

 the arm has hut a single denticle near the distal end of its anterior 

 margin. Its recorded range extends eastward to New Caledonia. 



55. Ocypoda ceratophthalma (Pallas). 



He des Roches, beach (No. 210), an adult male. 

 This species has been already referred to in the earlier part of 

 this Report (p. 237). 



56. Ocypoda cordimanus, Desmarest. 



Three adult males are in the collection, obtained respectively at 

 Bird Island, Seychelles, African Island, on the beach, and Providence 

 Island ; also an adult female from the He des Roches (No. 210). 

 The specimen from Bird Island was found in the interior of the 

 island. 



For the distribution of this and the preceding species I may 

 refer to my recent revision of the genus §. 



57. Macrophthalnrus parvimaims, Latr. (ined.), M.-Edw. 



Mahe Island, beach (No. 196) ; an adult male. 



This species, hitherto a desideratum in the Museum collection, 

 is remarkable on account of the extreme smallness and slenderness of 

 the chelipedes in the male, which resemble those of the females in 

 many other species. In the specimen before me the fingers are 

 slightly infiexed and concave on their inner surfaces, but scarcely 

 excavated ; the palms have a patch of hair on their inner surface, 

 but apparently no .spine. 



Dr. Richters records this species (which was originally described 

 from supposed Mauritius examples) from the Fouquets, and M. A. 

 Milne-Edwards from Reunion. 



58. Euplax (Chaenostoma) hoscii (Audouin). 



Five males and a female lacking the chelipedes, obtained on the 

 beach at Mozambique (Nos. 225, 227), are referred to this species, 

 to which also belongs, as I think, a very small male from the Red 

 Sea, received from the Godeffroy Museum as MavropTiihalmw de- 

 presstis, Ruppcll (No. 16403). 



* Ann. Sci. Nat. ser. 3, xviii. p. 148, pi. iv. fig. 12 (1852). 



t Crust, in Van der Decken's ' Reisen in Ost-Af'rika,' p. 84, pi. iv. fig. 1 

 (1867). 



J In Pollen and Van Dam's ' Recherehes sur la Fauna de Madagascar,' p. 17, 

 pi. lii. figs. 19-22 (1874). 



§ Ann. & Mag. Nat. Hist. ser. 5, x. p. 376 (18S2). 



