Amphilochus 151 



Head, rostrum long, lateral corners projecting bluntly. Side-plate 1 

 a little produced obtusely, 2*^ — 4*^ scarcely denticulated. Pleon segment 3, 

 postero-lateral angles without aiiy acute point. Eyes small, rounded, visual 

 Clements imperfectly developed, light red with whitish coating. Antenna 1 

 nearly as in A. manudeiis (p. 150), antenna 2 comparatively shorter and 

 stouter, not so long as antenna 1. Mandible, 3*^ Joint of palp rather longer 

 than 2^. Gnathopods 1 and 2 smaller and less unequal than in A. manudens, 

 without apical tooth, palm nearly straight, irregularly denticulate, finger 

 scarcely overlapping it, process -of 5^^ Joint not quite reaching the palm 

 even in gnathopod 2. Peraeopods as in A. manudens, but uropod 3 much 

 shorter, scarcely reaching beyond uropod 1, peduncle little longer than rami, 

 which are without spinules. Telson overlapping peduncle of uropod 3, more 

 than thrice as long as broad, acutely tapering. Colour pale yellowish, with 

 light red patches. L. 9 4iiira. 



Arctic ücean, North-Atlantic and North-Sea (Norway, depth 188 — 376 m; Firth 

 of Clyde). 



4. A. marionis Stebb. 1888 Ä.m., T. Stebbing in: Rep. Voy. Challenger, v.29 

 |). 743 t. 38 I 1893 A. tenuimnniis (part.), A. DellaValle in: F. Fl. Neapel, u 20 p. 595. 



9 . Side-plate 1 with front margin semicircular, 2** — 4**^ with lower 

 margiu only slightly crenate. Pleon segment 3, postero-lateral angles forming 

 a scarcely perceptible tooth ; segment 6 outdrawn on either side of the telson. 

 p]yes small, oval. Mandibular palp, 3^ Joint longer than 1^* and 2*^ combined. 

 Maxillipeds, outer plates broader than in European species, distal margin finely 

 pectinate on inner and ciliated on outer part. with a simple spine between. Gnatho- 

 pods 1 and 2 without apical tooth to 6**^ Joint, otherwise nearly as in A. manudens 

 (p. 150); gnathopod 2 very much larger than gnathopod 1. Peraeopods 1 — 5 

 about as in A. manudens. Telson triangular-oval, not twice as long as broad 

 L. about 3 mm. — d unknowij. 



Southern Indian Ocean (Marion Island). Depth 188 m. 



5. A. brunneus DellaValle 1893 A. b., A. DellaValle in: F. Fl. Neapel, u 20 

 p. .596 t. 4 f. 5; t. 29 f. 1 — 15. 



Head, rostrum short, lateral corners of head obtuse. Side-plate 1 

 rectangular, 2^1—4*^ (as figured) quite smooth. Eyes oval brown. Antenna 1, 

 1^* Joint rather shorter than 2^, 3*^ very short, flagellum 6-jointed, shorter 

 than peduncle. Antenna 2 subequal in length to antenna 1, ultimate and 

 penultimate joints of peduncle equal in length, flagellum 5-jointed. Mandible, 

 3*1 Joint of palp shorter than 2<^, Gnathopods 1 and 2 without apical tooth 

 to the 6^^ Joint, which widens distally rather less than in other species; 

 process of the 5*'' Joint does not nearly reach palm; finger does not reach 

 beyond palm. In gnathopod 2 the band is moderately larger than in 

 gnathopod 1, and has a straighter front margin. Peraeopods normal. Uropod 3 

 the longest. Telson triangulär, about '^/g length of peduncle of uropod 3. 

 Colour yellow brown to red. L. 4 — 5 mm. 



Gulf of Xaples. Depth to 10 ra. 



A. longimanus Cherreux 1888 A. l., Chevreux in: Bull. Soc. zool. France, 

 V. 13 p. 41. 



L. 5 3 mm. 



North-Atlantic (lat. 46» N., long. 7*> W.). Depth 180 m. 



