CETJSTACEA. 533 



* 



Transit-of- Venus Expedition at Eodriguez, I have already alluded to 

 the geographical distribution of this very variable species *. 



The specimens in the Museum collection are from Eodriguez 

 {H. R. Slater); Eed Sea, El Tor (Major MacDonaU), and Gulf of 

 Suez (B. McAndrew and /. K. Lord) ; Eiji Islands [HM.SMIerald'); 

 Samoa Islands {Rev. S. J. Whitmee). 



The variety melanodactylus is usually less pubescent than the 

 typical C. andreossii, and the lower part of the outer surface of 

 the larger chelipede is usually, but not invariably, destitute of 

 granules or tubercles. 



A male and female, from the Deedalus Shoal, Eed Sea (Lt.-Gol. 

 Playfair), which may be designated 0. andreossii, var. quadri- 

 lohatus, are distinguished from all other specimens of the genus I 

 have seen by having the front armed with four very distinct equal 

 and equidistant rounded lobes or teeth. In this variety the carapace 

 is very distinctly granulated on the protogastric and hepatic regions, 

 and the chelae tuberculated on the whole of their outer surface, the 

 tubercles being very large, rounded, and granulated on and near the 

 upper margin ; the fingers were dark-coloured. 



In both specimens there is a red spot on the gastric, cardiac, and 

 branchial regions of the carapace. It may perhaps prove to be 

 specifically distinct. 



3^, Actumnus setifer (De Haan). 



Of this species, upon whose synonymy and distribution I have 

 remarked on p. 225, a male and three females were collected at the 

 Seychelles, 4-12 fms. (No. 194), a small female at He des Neufs, 

 15 fms. (No. 187), and two males and a female at Providence Island, 

 17 fms. (No. 217). 



The length of the carapace of the smallest ova^bearing female is 

 less than 3 lines (6 millim.). 



Actumnus miliaris, A. Milne-Edwards f, an allied species, also from 

 the Seychelles, seems to be well distinguished by the much less pro- 

 minent and acute lobes of the antero-lateral margins, and by the 

 deflexed index or immobile finger of the larger chelipede. 



34. Enrtippellia annulipes. 



Ruppellia annulipes, M.-Edwards, Hist. Nat. Crust, i. p. 422 (1834) ; 

 Bana, U.S. Expl. Exped., Crust, xiii. p. 246, pi. xiv. fig. 4 (1852) ; 

 Stimpson, Proc. Ac. Nat. Sd. Philad. p. 37 (1858) ; nom.genericum 

 prmoc. 



A male and female were obtained on the beach at Poivre Island 

 (No. 198). 



In the British-Museum collection is a male from the Fiji Islands, 

 Totoya (H.M-,8. '■Herald'). Specimens from the Keeling or Cocos 

 Islands (Lt.-Gol. Burndby) possibly belong to a different species, as 

 they have the antero-lateral margins of the carapace less distinctly 



» Phil. Trans, clxviii. p. 487 (1879). 



t Nouv. Archiv. Mus. Hist. Nat. i. p. 288, pi. xTiii. fig. 7 (1865). 



