488 Maera 



9. M. tenella (Dana) 1852 Gammarus tenellus, J. D. Dana in : P. Amer. Ac, 

 V.2 p.212 ! 1853 & 55 G. t., J. D. Dana in: U. S. expl. Exp., v. 13 ii p. 952 t. 65 f. 7 j 

 1862 Moera tenella, Bäte, Cat. Amphip. Brit. Mus., p. 193 t. 35 f. 3 | 1888 Maera t, T, 

 Stebbing in: Rep. Voy. Challenger, ü. 29 p. 1710 | 1893 M. grossimana (part.), A. Della 

 Valle in: F. Fl. Neapel, v. 20 p. 727. 



Body slender, smooth. Side-plates sliallow. Pleon segment 3, postero- 

 lateral corners seeraingly a little produced biit scarcely acute. Eyes small, 

 round. Antenua 1, 1®* Joint not stout, 2^ very long, flagellum little longer 

 than peduncle, accessory flagellum half as long as primary, 7- or 8-jointed. 

 Anteuna 2 very slender, short, flagellum as long as ultimate Joint of peduncle. 

 Gnuthopod 1 small, 6*^ Joint subovate. Gnathopod 2 stout, ö*-'^ Joint small, 

 narrow, cup-shaped, 6*^ broad, much longer than broad, widening a little 

 distally; palm nearly straight truncate, not excavate, defined by a small 

 acute tooth. Peraeopods 1 and 2 remarkably slender. Peraeopods 3 — 5, 

 2^ Joint narrowing downward; peraeopod 5 ratber shorter than 4*^, finger 

 acutely produced behind the nail. Uropod 3 quite long, extending much 

 beyond uropod 2. Telson oblong, apical setae as long as the telson. L. 8 mm. 



Tropical Pacific (coral reefs of Fiji Island Viti Levu). 



10. M. loveni (Bmz.) 1859 Gammarus l., K. M. Bruzcliiis in: Svenska Ak. 

 Handl., n. ser. n 3 nr. 1 p. 59 t. 2 f. 9 | 1862 Moera loveni, Batc. Cat. Amphip. Brit. 

 Mus., p. 193 t. 35 i". 1 | 1868 Maera loveni, A. M. Norman in: Ann. nat. Hist., ser. 4 ?'. 2 

 p.416 t.21 f. 11, 12 I 1893 M. loveni, A. Della Valle in: F. FI. Neapel, r.20 p.729 | 1894 

 M. loveni, G. 0. Sars, Orust. Norway, v. 1 p. 519 t. 182 f. 2. 



Body long, very slender, smooth. Head, lateral lobes narrowly rounded. 

 Side-plates small, 1**' the largest, produced forward in a linguiform lobe, 4*'^ 

 twice as broad as deep, scarcely larger than 5*^. Pleon segment 3, postero- 

 lateral corners almost quadrate, with a little acute point. Eyes small, round, 

 inconspicuous in spirit. Antenna 1 long, slender, 1^* Joint long, 2*^ longer, 

 flagellumshorter than peduncle, 17 — 3ü-joiuted, accessory flagellum 5 — 7-jointed. 

 Antenna 2 about half as long as antenna 1, ultimate Joint of peduncle shorter 

 than penultimate, flagellum not longer than ultimate, 7 — 12-jointed. Mandible, 

 3*^ Joint of palp shorter than 2*^. Maxiila 1, inner plate with 3 or 4 setae at 

 apex. Gnathopod 1, 5^^ and 6*^^' joints subequal, setose on both margins, 

 6*** subovate, widest at the convex, ill-defined palm, finger vpith setae on 

 outer margin and cilia on the inner. Gnathopod 2 rather povperfiil, 5*^ Joint 

 triangulär, 6^^ large, oblong quadrangular. widest at the serrate, nearly 

 transverse palm, defined by a small tooth, finger arraed as in gnathopod 1. 

 Peraeopods l and 2 very slender. Peraeopods 3 — 5, 2*^ Joint little expanded, 

 narrowing downward; peraeopods 4 and 5 elongate. Uropod 3 elongate, 

 reaching much beyond the others, outer raraus about 2\'^ times as long as 

 peduncle, inner nearly as long as outer. Telson rather shorter than peduncle of 

 uropod 3, cleft nearly to base, lobes conical, rather divergent, with spine 

 between the shorter inner and longer outer tooth. L. ö reaching 26 mm. 



Arctic Ocean, North- Atlantic, North-Sea, Skagerrak and Kattegat (Disco [West- 

 Greenland], depth 301 m; Spitzbergen, dopth 87 m; Svveden, Norway, Denmark, Scotland). 



11. M. othonis (M.-E.) 1830 Gammarus o., H. Milne Edwards in: Ann. Sei. 

 nat., ^'. 20 p. 368, 373 1. 10 f. 11— 13 | 1889 Maera o., A. M. Norman in: Ann. nat. Hist., 

 ser. 6 V. 4 p. 125 | 1893 M. o., A. Della Valle in: F. Fl. Neapel, v. 20 p. 729 t. 60 f . 8 | 

 1894 M. 0., G. 0. Sars, Crust. Norway, v. 1 p. 518 1. 182 f. 1 | 1895 M. o., A. 0. Walker 

 in: P. Liverp. biol. Soc, v.9 p. 308 | 1847 Gammarus longimanus, W. Thompson in: 

 Ann. nat. Hist., v. 20 p. 242 j 1857 G. l, Bäte in: Ann. nat. Hist., ser. 2 v. 19 p. 145 | 

 1876 Megamoera longimana, A. ßoeck, Skand. Arkt. Arapliip., v. 2 p. 382 | 1847 Garn- 



