CRUSTACEA. 



r,i;i 



what dilated, and vertically flattened and compressed; the margins, 

 both of palm and finders, spinulose, but the surface smooth, without 

 spines. But one ambulatory leg remains attached to tho body (on 

 the left side) ; this is rather small and slender, and has the upper 

 margin of the mcrus, carpus, and penultimate joints spinulose, the 

 dactyl obscurely denticulated below. Colour light brownish pink 

 or yellowish. Length of the body to end of rostrum nearly 6 lines 

 (12millim.) ; of a chelipede about 6J lines (14 millim.). 



The single specimen (which is, I think, a male) waa obtained at 

 He des Nenfs, 15 fms. (No. 1ST), with Qalathea spinosirostris. 



_ The spinulation of the carapace, with the form of the chelipedes, 

 distinguishes it from all the species with which ] am acquainted. 



The presence of supraocular spines will at once separate it from 

 the Oriental forms Munida gregaria (Fabr.) = M. subrugosa, Dana, 

 J/, j'iponiea, Stimpson, and also from M. spinulifera, described at 

 p. 279 of this Report. 



HACRURA. 



1. Alpheus obesomanus, Dana. 



A specimen was obtained at the Seychelles, 4-12 fms. (Xo. 194). 

 It has been already noticed at p. 267 of this Report. 



2. Alpheus edwardsii (Audoain). 



A specimen, in which the smaller chelipede is wanting, was ob- 

 tained at the Seychelles, 4—12 fms. (Xo. 194). I have already 

 referred to the distribution, sexual characteristics, and variability of 

 this species at p. 284 of this Report. 



3. Alpheus laevis, Randall. 



Of this widely distributed species specimens were collected at the 

 Seychelles, 4-12 fms. (Xo. 194) ; African or Eagle Island, 10 fms. 

 (Xo. 184) ; and Etoile Island, 13 fms. (Xo. 191) : most of these are 

 ova-bearing females. 



Specimens are in the British-Museum collection from the Red Sea, 

 Gulf of Suez (R. MacAndreiv) ; Gulf of Akaba (Major Burton); 

 El Tor (Major MacDonald); Daedalus Shoal (Lt.-Col. Playfair); 

 also Red-Sea specimens received from the Godeffroy Museum, and 

 wrongly designated A. tricuspidatus, Heller; also from Rodriguez 

 (H. H. Slater); Ceylon, Galle (Dr. II". Ondaatje); Samoa Islands 

 (Rev. S. J. WMtmee) ; and Fiji Islands, Matuka (H.3I.S. 'Herald'). 



There is in the collection a specimen of Alplieus from African or 

 Eagle Island, 10 fms. (Xo. 184), which for the present I refrain 

 from designating by a distinct specific name. It is evidently very 

 nearly allied to Alpheus collumianus, Stimpson*, from the Bonin 



* Proc. Acad. Nat. Sci. Philad. p. 31 (1860). 



2o 



