340 • ON CRUSTACEA FROM THE FALKLAND ISLANDS. 



Plate IV, 



Tanais nierstraszi, sp. n. 



n.s. Line showing length of specimen figured below in two aspects. 

 oc, a.s., a.i. Eye; first and second antenniu more liigbly magnified. 

 I.S., m., mxp. Upper lip, mandible, niaxillipeds ; these, the end of prp. 5 and the 



urp. on higher scale than tbe other details. 

 gyi. 1, gn. 2, prp. 5. First and second guathopods and fifth peraeopod. 

 ylp; urp. Pleopod and uropod. 



Plate V. 

 Munna antarcticus (PfefFer). 



n.s. (J. Line showing length of male specimen, roughly sketched, incomplete. 



U.S., a.i., 9 . Dorsal view of female j first antenna more highly magnified. 



Fl. $ , ov. Pleon of fennile hiijhly magnified ; ovum to the same scale. 



m. S, m. ?, vi.rji., op.^ . Mandibles of male and female; a maxilliped ; opercular 

 lamella of male ; all more magnified than other details. 



a.i. $,gn.\, S , gii. 1, $, prp. 1, prp. 5. Second antenna; first gnathopod of a 

 male (from separate specimen), first gnathopod of female, part of first 

 per;eopod, fifth perajopod; all to one scale of nuignification. 



[14] 



