CRUSTACEA FROM THE FALKLAND LSLAN'DS. ."KU) 



(of Mf. Vallentin's collection). The lljjaleUa was also " found in 

 a freshwater stream some miles distant from Stanley," where 

 "this species appeared to be fairly common." 



Fam. A o R I D ^'E. 



1899. Aoruke Stebbing, Ann. Nat. Mist. ser. 7, vol. iv.p, 211. 



Gen. Lembos Hate. 



1857. Lemhos Bate, Ann. Nat. Hist. ser. 2, vol. xix. p. 142. 

 19()(). „ Stebbing, Das Tierreicli, vol. xxi. pp. 594, 7:^7. 

 1909. ,, Walker, Tr. Linn. Soc. London, vol. xii. p. 337. 

 1909. „ Chilton, Snbantarctic Is. of N. Zealand, p. G46. 



Lembos fuegiexsis (Dana). (PI. IX.) 



1853 55. Gammarus faeyiensis Dana, U.S. Expl. Exp. vol. xiii. 



p. 954, pi. 65. fig. 8a-A. 

 1862. Alvera fuei/iensls and M. fiveyeensis Bate, Catal. Aniph. 



Brit. Mus. p. 194, pi. 35. fig. 4. 



1900. Lembos /iieylensis Stebbing, Das Tierreich, vol. xxi. p. 600. 

 1909. Lembos kergaeleiii AV^alker, Tr. Linn. Soc. London, vol. xii. 



p. 337, pi. 43. tig. 6. 

 1909. {^.) Tj. kergtieleni Chilton, Sid)antarctic is. of N.Zealand, 

 p. 646, text-tigs. 12 a, b. 



in 1906 this species remained obscure, Dana having described 

 and iigured it ordy in the female sex. While naming itftieyiensis 

 as if it belonged to Tierra del Fuego, lie assigned it to the " Feejee " 

 Islands. Now that Mr. V^allentin has obtained a male and a 

 female specimen together from the Falkland Islands, I feel 

 pretty sure that the " Feejee" Islands was not the original locality, 

 but assigned through some lapse of memory as the rendering of 

 J'nsyiensis, yet the distribution must be extensive, since Walker 

 records the species from the Indian Ocean. 



Tlie male difiers from I^emhos keryueleni (Stebbing), taken 

 from a considerable depth at Kerguelen Island, by the hand of 

 the first gnathopod, which has a difi'erently scidptured palm, and 

 also by the second joint of the second gnathopod, which is here 

 not a broadly expanded oval as in the other s{)ecies. The expan- 

 sion, however, is also absent from the specimen which Chilton, in 

 1909, identified with Z. keryiieleni, but that identification seems 

 to me very doubtful, since the male hei'e figured is apparently 

 adult, to judge by the antennae and gnsithopods, and the size 

 slightly larger than that of the accompanying ovigerous female. 

 It scarcely needs observing that the expansion of the second joint 

 of the second gnatho))od, though it occurs also in Emystheus 

 exsertipes, is a very unusual feature. In the present species the 

 second joint is not expanded either in the gnathopods or in any 

 of the peraeopods. 



The eyes are small and round. The first antennie have a long 

 peduncle and longer flngellum, first joint of i)eduncle rather 



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