424 



U.S. NATIONAL MUSEUM BULLETIN 271 

 Neopleustes Stebbing 



Neopleustes Stebbing, 1906. 



Type-species: Amphitoe pulchella Kr0yer, 1846 (original designa- 

 tion). See Sars, 1895 (as Paramphithoe) . 



Mandibular niolar a small smooth protuberance; article 3 of maxil- 

 lipedal palp produced distally; gnathopods subchelate; uropod 3 

 lacking a large peduncular process (Austropleustes) . Species: 6, arctic- 

 boreal, littoral to bathyal (1416 m). 



Figure 153. — Pleustidae: Upper lip: a, Pleustes panopla (Kr0yer) (Sars, 1895, pi. 121). 

 Mandible: b, Sympleustes glaber (Boeck) (Sars, 1895, pi. 126); c, Pleustes. Lower lip: 

 d, Pleustes; e, Mesopleustes abyssorum (Stebbing, 1888). Maxillae 1, 2: f,g, Pleustes. 

 Maxillipeds: h, Pleustes; i, Stenopleustes latipes (M. Sars) (Sars, 1895, pi. 127);/, Meso- 

 pleustes, palp. Gnathopod 1: k, Austropleustes cuspidatus K. H. Barnard (1932); /, 

 Neopleustes pulchellus (Kr07er) (Sars, 1895, pi. 122); m, Pleustes. Gnathopod 2: n, 

 Pleustes; o, Parepimeriella irregularis Schellenberg (1931); p, Neopleustes. Uropod 3: q, 

 Austropleustes, showing peduncular process [shaded]; r, Pleustes. Telson: s, Neopleustes; 

 t, Pleustes. 



