Report on the zoological collections made in the Indo-Pacific Ocean ...

CETTSTACEA.5G1what dilated, and vertically flattened and compressed; the marf!;ins,both of palm and fingers, spinulose, but the surface smooth, -withoutspines. But one ambulatory leg remains attached to the body (onthe left side) ; this is rather small and slender, and has the uppermargin of the merus, carpus, and penultimate joints spinulose, thedactyl obscurely denticulated below. Colour light brownish pinkor yellowish. Length of the body to end of rostrum nearly 6 lines(12millim.); of a chelipede about 6| lines (14 millim.).The single specimen (which is, I think, a male) was obtained atHe des Neufs, 15 fms. (No. 187), with Galathea spinosirostn's.The spinulation of the carapace, with the form of the chelipedes,distinguishes it from all the species with which I am acquainted.The presence of supraocular spines will at once separate it fromthe Oriental forms Munida gregaria (Fabr.) = i/. subna/osa, Dana,31. japonica, Stimpson, and also from M. sj)inulifera, described atp. 279 of this Keport.MACRUIIA.1. Alpheus olbesomanus, Dana.A specimen was obtained at the Seychelles, 4-12 fms. (No. 194).It has been already noticed at p. 2b7 of this Eeport.2. Alpheus edwardsii (Audouiii).A specimen, in which the smaller chelipede is wanting, was obtainedat the Seychelles, 4-12 fms. (No. 194). I have alreadyreferred to the distribution, sexual characteristics, and variability ofthis species at p. 284 of this <strong>Report</strong>.3. Alpheus laevis, Bandall.Of this widely distributed species specimens were collected at theSeychelles, 4-12 fms. (No. 194); African or Eagle Island, 10 fms.(No. 184) ; and Etoile Island, 13 fms. (No. 191) :most of these areova-bearing females.Specimens are in the British-Museum collection from the Red Sea,Gulf of Suez {R. MacAndrew); Gulf of Akaba {Major Burton);El Tor {Major MacDonald); Daedalus Shoal {Lt.-Gul. Pkn/fair);also Eed-Sea specimens received from the Godeffroy Museum, andwrongly designated A. tricuspidatus. Heller; also from Rodriguez{H. U. Slater) ;Ceylon, Galle {Br. W. Onduatje) ;Samoa Islands{Rev. S. J. WJiitmee) ; and Fiji Islands, Matuka {HJI.S. 'Herald').There is in the collection a specimen of Alpheus from African orEagle Island, 10 fms. (No. 184), which for the present I refrainfrom designating by a distinct specific name. It is evidently verynearly allied to Alpheus collumianus, Stimpson*, from the Bonin* Proc. Acad. Nat. Sci. riiilad. p. 31 (1860).2o