54:4 COLLECTIONS FROM THE WESTERN INDIAN OCEAN. 



along their inner margins, which are strongly dentated. Ambulatory- 

 legs very hairy and pubescent, with the merus-joiut slightly com- 

 pressed, but not dilated ; dactyli unarmed on the inferior margins 

 and terminating in a small corneous claw. Colour (in spirit) 

 pinkish ; hairs yellowish white. Length of carapace nearly 2 lines 

 (4 millim.), breadth about 2| lines (5 millim.) ; length of third 

 ambulatory leg 4 lines (nearly 9 millim.). 



The single female in the collection was obtained at the Seychelles 

 (4-12 fms.). 



The species described by A. M. -Edwards as Carcinoplax setosa, 

 from New Caledonia *, resembles this form in many of its characters, 

 but has a narrower, more arcuate front, and dentated antero-lateral 

 margins. To it I refer a specimen from the Eijis, Totoya (//.M.S. 

 ' Herald'), and perhaps two from the Philippines, Bokol (Cumin;/), 

 in the British-Museum collection. 



Ceratoplax arcuata, described in the earlier part of this Report, is 

 at once distinguished by the very differently shaped carapace, acute- 

 edged eye-peduncles, &c. 



61. Grapsus maculatus (Catesby). 



Two adult females of this very common and widely distributed 

 species are in the collection from African Island (Xo. 210). To 

 the localities mentioned in my Report in 1S79 on the Transit-of- 

 Venus Crustacea (t. e. p. 489), the following are to be added : — 

 Canaries, Teneriffe (Old Collection); Lanzarote (Rev. It. T. Loive); 

 Madagascar, Tamatave (Rev. Deans Cowan) ; Amboina (coll. Dr. 

 Bleeker) ; and Loyalty Islands, Lifu (liev. S. J. Whitmee). 



This species, as hitherto recorded, ranges throughout the Oriental 

 Region southward to the Cape of Good Hope and New Zealand, 

 eastward to the coasts of California and Peru, and occurs in the 

 Atlantic Region at the Canary aud Cape-Verd Islands and St. 

 Helena, aud on the American coasts and islands from Florida to 

 Pernambuco (<■/. Kingsley, Proc. Acad. Nat. Sci. Philad. p. 193, 1880, 

 who has shown that Catesby 's designation maculatus must be used 

 for this species instead of pictus of Latreille). I have never seen 

 the edition of Catesby 's work published in 1771. In the original 

 and pre-Linnean edition (1743) the figure and description are so 

 bad as to be scarcely recognizable. 



G2. Grapsus strigosus (Herhst). 



Mozambique, beach (No. 227); a small male. 



I refer to this common species, which is sometimes scarcely dis- 

 tinguishable from G. maculatus, specimens in the Museum collec- 

 tion from the Red Sea, Egyptian coast (Sir J. G. Wilkinson) ; Gulf 

 of Suez (11. MacAndrew) ; Port Natal (purchased) ; Karachi (the 

 Karachi. Museum); Duke of York Island (liev. G. Brown); Timor 



* Kouvelles Archives du Museum, ix. p. 2G7, pi. xii. fig. 2 (1873). 



