92 Stegocephaloides, Andaniopsis 



- than 7***, greatly narrowed below. Antenna 1, peduncle rather flattened, flagellum 

 with 4 joints, 1^* very large, last spiniform. Giiathopods 1 and 2 subequal 

 and sirailar, 6*^^ Joint oblong, tapering distally, rather longer than h^^\ finger 

 very short. Peraeopod 4, 2^ Joint linear; peraeopod 5, 2^ Joint large, 

 produced downward in an acute lobe, üropod 3, rami unarmed. Telson cleft, 



2 species. 



Synopsis of species: 



Peraeopod 5, apex of 2d Joint not very acute nor 



produced below 4tli 1. S. christianiensis . . . p. 92 



Peraeopod 5, apex of 2d Joint very acute, produced 



niuch below 4^^ 2. S. auratus p. 92 



1. S. christianiensis (Boeck) 1871 Stegocephalus c. A. Boeck in: Forh. Selsk, 

 Christian., 1870 p. 128 I 187ö S. c, A. Boeck, Skand. Arkt. Amphip., v.2 p.424 t.8 f. 4; 

 t.9 f. 1 I 1891 Stegocephaloides c, (r. 0. Sars, Crust. Norway, v.\ p. 202 t. 70 f. 2 | 1893 

 S. c, A. Della Valle in: F. Fl. Neapel, v. 20 p. 631 t. 59 f. 41. 



Head with A-ery short rostrum. lateral angles acute (Fig. 18). Side- 

 plate 4 nearly as broad as deep. Pleon segment 3, postero-lateral angles 

 produced, minutely bidentate. Ajitenna 1, accessory flagellum scarce half as 

 long as laminar 1^* Joint of flagellum. Antenna 2, ultimate and penultimate joints 

 of peduncle subequal, flagellum short, 8- or 9-jointed. Peraeopod 5, 2<^ Joint 

 as long as rest of limb, overlapping 4*'^ Joint, bind margin serrate, angularly 

 curved, obtusely poiuted below. Telson oblong oval, moderately tapering, 

 cleft nearly to the middle. Colour tessellated with angular patches of pigment 

 Spots, dark greenish brown. L. 9 normally 7 mm ; North-Atlantic specimeus 

 more than twice this size, perhaps therefore a diflferent species (Sars). 



Arctic Ocean, North-Atlantic, North-Sea and Skagerrak (Bohuslän, South- and 

 West-Norway). Depth 38—188 m. 



2. S. auratus (0. Sars) 1882 Stegocephalus a., G. O. Sars in: Forh. Selsk. 

 Christian., nr. 18 p. 86 t. 3 f . 8 | 1891 Stegocephaloides a., G. 0. Sars, Crust. Norway, 

 f.l p.203 t.70 f. 3 i 1893 S. a., A. Della Valle in: F. Fl. Neapel, t7.20 p. 631 t. 59 f. 42. 



Head with minute rostrum, lateral angles nan-owly rounded. Side-plate 4 

 much deeper than broad. Pleon segment 3, postero-lateral angles produced, 

 minutely serrate. Antenna 1, accessory flagellum more than half as long as 

 1^* Joint of peduncle. Peraeopod 5 short, 2^ Joint much longer than rest 

 of limb, overlapping ö*'^ Joint, bind margin seiTate, smoothly curved, acutely 

 pointed below, Telson subtriangulai', sharply tapering, cleft beyond the middle. 

 Colour semipellucid, with broad orange band round the middle. L. 9 5 mm. 



Arctic Ocean, North-Atlantic and North-Sea (North- and West-Norwaj'). Solitary, 

 in depths of 150 — 376 m. 



4. Gen. Andaniopsis 0. Sars 



1871 Andania (part.), A. Boeck in: Forh. Selsk. Christian., 1870 p. 128 | 1891 

 Ändani(ypsis (Sp. un. : A. nordlandica), G. 0. Sars, Crust. Norway, v. 1 ]). 208. 



Side-plate 4 broad, completely overlapping side-plate 5, J^yes distinct, 

 small. Antennae 1 and 2 subequal; antenna 1, flagellum 4-jointed. Epistome 

 rounded in front. Upper lip unsymmetrically bilobed. Mandible, cutting 

 edge straight, flnely denticulate. Maxiila 1, inner plate with many setae, 

 outer rather narrow, palp small, 1-jointed. Maxiila 2, inner plate short, 

 broad, with many setae or spines, outer short, sublinear, tipped with spines. 



