88 Lysianassidarum genera dubia et species dubiae, Stegocephalidae 



L. nitens Hasw. 1880 L. n., Haswell in: P. Linn. Soc. N.S. Wales, r. 4 p. 255 

 t. 8 f. 5 1 1885 Anonyx n., Haswell in: P. Linn. Soc. X.S. Wales, v. 10 p. 98 t. 12 f. 1, 2 i 

 1893 .4. n., A. Della Valle in: F. Fl. Neapel, f. 20 p. 836. 



L. 6 mm. 



Port Jackson [East-Australia]. 



L. WOOdmasoni Giles 1890 L. lo., O. M. Giles in: J. Asiat. Soc. ßengal, v.59 

 p. 68 t. 2 f. 4. 



Agreeing in several points with Podoprion bolivari (p. 18). L. 8 mm. 



Macpherson's Strait (Andaman Islands). Coral sand, depth 30 m. 



Orchomene grimaldii Chevreux 1890 0. g., Chevreux in: Bull. Soc. zool. 

 France, v. 15 p. 164. 



Separated from Orchomene by the entire telson, from Nanuonyx by the sub- 

 chelate gnathopod 1, from Onisimus by having the rami of uropod 3 shorter than 

 the peduncle. Mouth-organs not described. 



3Iediterranean (Monaco). Depth 475 m. 



Stenia Dana 1849 S. (non Guenee 1846, Lepidoptera, fide: A. Marschall, 

 Nomencl. zool., p. 313), J.D.Dana in: Amer. J. Sei., ser. 2 v.8 p. 136 | 1852 S. (Sp. 

 un.: S. magdlanica), J. D. Dana in: P. Amer. Ac, v.2 p. 209. 



S. magellaniea Dana 1852 S. m., J.D.Dana in: P. Amer. Ac, v.2 p. 209 j 

 1888 Anonyx magellanicus, T. Stebbing in : Rep. Voy. Challenger, v. 29 p. 266 | 1853 

 & 55 A. fuegiensis, J. D. Dana in: U. S. expl. Exp., v. ]3ii p. 919; t. 62 f. 4a — p | 1893 

 A.f., A.Della Valle in: F. Fl. Xeapel, v.2Q p. 836. 



Epistome and telson agree with Onisimus (p. 25), but head and mouth-organs 

 in general and gnathopod 1 with Tryphosa (p. 68). 



Good Success Bay [Tierra del Fuego]. 



2. Farn. Stegocephalidae 



1852 Subfam. Stegocephalinae, J. D. Dana in: Amer. J. Sei., ser. 2 «'.14 p. 310 } 

 1853 Subfam. S.; J. D. Dana in: ü. S. expl. Exp., v. 13ii p. 907 ] 1882 Stegocephalidae, 

 G. 0. Sars in: Forh. Selsk. Christian., nr. 18 p. 23 | 1886 Subfam. Lysianassina (part.), 

 Gerstaecker in: Bronn's Kl. Ordn., ». 5ii p. 499 | 1888 Stegocephalidae, T. Stebbing in: 

 Rep. Voy. Challenger, v.29 p.727 | 1891 S., G. O. Sars, Crust. Norway, v.l p.l96 | 1893 

 Gammaridi (part.), A. Della Valle in: F. Fl. Neapel, r. 20 p. 620. 



Head short, retiring. Peraeon broad, deflexed in front. Side-plate 4 

 large (Fig. 18). Antenna 1, accessoiy flagellum 1- or 2-jointed (Fig. 19). 

 Antenna 2 seldom much longer than antenna 1. Upper lip bilobed. Lower 

 lip without inner lobes. Mandible (Fig. 17, 21) without molar or palp, 

 accessory plate on one of the pair. Maxilla 1 (Fig. 15, 20), inner plate with 

 numerous setae, outer usually with 9 principal spines. Maxilla 2 (Fig. 16), 

 inner plate very broad and setose, outer narrow. Maxillipeds, plates broad rather 

 than long, last 2 joints of palp nan-ow. Guathopods 1 and 2 not subchelate. 

 Peraeopod 3, 2^ Joint not expanded. Uropod 3 biramous. Telson small. 



Marine. 



9 genera, 12 accepted species, 2 obscure. 



