302 Cleippides, Stenopleura 



coriiers augular. sciiic<:;lv produced, }K>st-juiteuiial coruers ^cutely produucd 

 dowiiward. Side-plates 1 — 4 subquadrate, produced -below into a rainute- 

 pointed tooth, in frout of 1***. behind in 2^ — 4*^'; 5*^» and 6*'» each prodm-o«! 

 into 2 teeth, ö**^ paiv much wider than the rest. Pleon segnient )i, postero- 

 lateral corners with 2 toetli as in 0. tricuspis. Eyes small, reniforin. almost 

 colourless. Antenna 1, 1^* Joint as long' as 2^ and 3*^ combined, flagelluin luoro 

 than thrice as long as peduncle, many-jointed. Antenna 2 scarcely half as long. 

 Gnathopods 1 and 2 alike, but tlie 2*^ rather louger than the P*; 5*^' Joint 

 long, distally wide, 6*^ abruptly narrower, oval, about half as long, palm 

 undefined, linger curved. Peraeopods 3 — 5, 2^ Joint scarcely expanded, 

 except a little at the base; peraeopod 5 with a tooth, the lower bind 

 angle produced to a point. üropods 1 — 3 and telson as in 0. tricuspis. 

 (.'olour yellowisli white shading into violet and rose-red: inouth-parts nnd 

 niost of tlie limbs of a rieh carmine. L. 42 — 52 mm. 



Arctic Ocean (lat. 67»— 80"^ N., long. 1(J<> E.— 12MV., depth 663 -- 1890 in ; Spitz- 

 berfroii. depth 160 — 265 in). 



13. Gen. Stenopleura Stebb. 



1888 Stenopleura (Sp. im.: S. ntlanticä), T. Stebbing in: Kep. Voy. Cliallenger, 

 f. 29 p. 949. 



Body sleuder, not deutate. Head, post-antennal corners not produced. 

 Side-plates 1 — 4 very shallow. .Antenna 1 the longer, without accessory 

 flagellum. Lower lip with inner lobes. Mandible with accessoiy plate oii 

 left, spine-row with very few spines, molar strong, palp robust, 3*^ Joint as 

 long as 2*'. Maxiila 1, inner plate with 1 sota, outer with 10 spines. 

 2*^ Joint of palp tipped with spine-teetli. Maxiila 2, inner plate shorter than 

 outer, each with a few apical spines, inner margin unarined, Maxillipeds. 

 inner plates witli distal margin sloping outward, outer plates not reaching 

 beyond apex of palp's 1*** Joint, with 3 spines on apical margin and a few 

 submarginal setae on inner, finger as long as 3*^ Joint of palp. Gnathopods 1 

 and 2 alike, subequal, 5*^ Joint short, cup-like, 6**^ oval, rather large, finger 

 long. Peraeopods 1 and 2, 2*^ and 4'^'^ joints widened. Peraeopods 3—5, 

 2*^ Joint expanded, finger in all peraeopods smoöth, curved. üropods 1 

 and 2, outer ramus much sliorter than inner; uropod 3, rami long, lancec»- 

 late, outer nearly as long as inner. Telson entire, apically sculptured. 



1 species. 



1. S. atlantica Stebb. 1888 S.a., T. Stebbing in: ßep.Voy. Challenger, v.-J'-* 

 p.9r.O t.84 I 1893 Acanthozone a., A.DellaValle in: F. Fl. Neapel, v.20 p.601 t.59 f.ll. 



Head, rostrum and lateral corners little prominent. Side-plate 1 

 distally a little produced forward. Pleon segment 3, postero-lateral corners 

 subquadrate. Eyes large, oblong oval. Antenna 1, peduncle short, l*'*' Joint stout, 

 longer than 2*^ and 3^ combined, flagellum about 5 tiraes as long as peduncle, 

 soon becoming filiform, with 33 joints, 1'^'^ nearly as long as 2*^ of peduncl«>. 

 Antenna 2 rather shorter, ultimate Joint of peduncle shorter than penultimate, 

 flagellum more than 4 times as long as peduncle, filiform, 35-jointed, Gnatho- 

 pods 1 and 2, 5*^^ Joint triangulär, with serrate spines on the slightly produced 

 lobe, 6*^ Joint triangulär oval, tapering to the hinge of the curved finger; 

 to judge by the length of the latter, the palm may be considered to form 

 the bind margin. Gnathopod 2 is slightly the larger, with the lobe of the 



