Neopleustes 313- 



smooth. Eyes very large, rounded triangulär, AnteDua 1, 1^* Joint of 

 flagellum shorter than 3^ of peduncle. Gnathopods 1 and 2 less slender 

 than in N. pulchellus, 6*^ Joint raore regularly oblong oval. Peraeopods 1 — 5 

 less robust; peraeopods 3—5, 2*^ Joint with bind margin smootb. Uropod 3, 

 outer ramus little longer tban % iuner. Telson about twice as long as 

 broad, apex without deutiform projections. Colour pale red (Holböll). In 

 other points agreeing with N. pulcbellus. L. Q scarcely more tban 8 mm. 



Arctic Ocean (Greenland). Depth 9 — 113 m. 



3. N. bicuspis (Kröyer) 1838 AmphitJtoe b., (Reinhardt in MS.) Kröyer in: 

 Danske Selsk. Aih., v.7 p. 273 t. 2 f. 10a— e | 1859 ParanqMthoe b., R. M. ßruzeliiis 

 in: övenska Ak. Handl., n. ser. «.3 nr. 1 p.73 | 1887 P.b., H.J.Hansen in: Vid. 3Ieddel., 

 ser.4 V.9 p. 122 | 1893 P.b., G. 0. Sars, Crust. Norway, v. l p. 349 t. 123 f. 1 | 1895 

 P. b. (part.), A. O. Walker in: P. Liverp. biol. Soc, v.Q p. 303 | 1861 Amphithopsis b., 

 A. ßoeck in: Forh. Skand. Natiirf.. Mede 8 p. H62 \ 1876 Pleustesb., A. ßoeck, Skand. 

 Arkt. Amphip., v.2 p. 308 j 1893 Acanthozone pulchella (part.)?, A. Della Valle in: 

 F. Fk Neapel, v. 20 p. 605. 



Not carinate, but dorsally toothed on pleon segments 1 and 2. ßostrum 

 small, obtuse, post-antennal corners little produced. Side-plate 1 scarcely 

 expanded distally. Pleon segment 3, postero-lateral angles forraiug a small 

 tooth with sinus above. Eyes rather small, oval triangulär, dark red. 

 Antenua l, 1^* Joint longer tlian 2^ and 3'^ combined, flagellum 4 or 5 times 

 as long as peduncle, 90-jointed. Antenna 2 much shorter, ultimate Joint of 

 peduncle scarcely as long as penultimate, flagellum about twice as long as 

 peduncle, 6()-jointed. Maxiila 1 with 1 seta (ßruzelius; Boeck: 3 setae) on 

 inner plate. Gnathopods 1 and 2, 5*^ Joint short, lobe setose, 6^^ rather large, as 

 long as 2*^ Joint, tapering a little, palm spinöse, leaving scarcely any bind margin. 

 Peraeopods 1 — 5 rather slender, spinulose; peraeopods 3 — 5 subequal, 2"^ Joint 

 oval, serrulate behind. Uropod 3, outer ramus scarcely more than half as long 

 as inner, longer than peduncle. Telson nearly twice as long as broad, apex 

 evenly rounded. Colour whitish, tinged with yellowish, mottled with reddisb 

 brown spots, but sometimes almost pure white. L. 9 12 — 14 mm. 



Arctic Ocean, North- Atlantic, North-Sea and Skagerrak (Greenland, Spitzbergen, 

 Iceland, Labrador, Norway, Bohuslän, France, Great Britain); Kattegat. Depth 6 — 113 m. 



4. N. monoeuspis (O. Sars) 1893 Parawphifhoe m., G. 0. Sars, Crust. Norway^ 

 v.l p. 351 t. 123 f. 2 , 1895 P. bicuspis (part.), A. O.Walker in: P. Liverp. biol. Soc, 

 V.9 p.303. 



Dorsal tooth ouly on pleon segment 2. Rostrum small, obtuse, post- 

 antennal corners sharply produced. Side-plate 1 broad, distinctly expanded 

 distally, with denticle at bind corner. Pleon segment 3, produced angles 

 witböut sinus above. Eyes large, almost regularly ovaL dark red. Antenna 1, 

 1^* Joint subequal to 2<i and 3'^ combined. Gnathopods 1 and 2 stouter than 

 in N. bicuspis. Peraeopods 1 — 5 rather strong, 4**^ longer than 3^, 5**> than 4*^ 

 Uropod 3, outer ramus much longer than \ inner. Telson oval, not nearly 

 twice as long as broad. Colour whitish, sparingly mottled, except in front 

 of head and dark peduncles of autennae. L. g 11 mm. 



Arctic Ocean (Greenland. Hammerfest [Finmark]). Depth 56 — 94 m. 



5. N. brevioornis (O. Sars) 1882 Paramphithoe b., G. O. Sars in: Forh. Selsk. 

 Christian., nr. 18 p. 98 t. 4 f. 11, IIa | 1893 P. b., G. O. Sars, Crust. Norway, v.l p.35a 

 t. 124 f. 2 I ?1887 P. gracilis, H. J. Hansen in: Vid. Meddel., ser. 4 r. 9 p. 124. 



