Aliceila, Uristes 63 



37. Gen. Aliceila Chevreux 



1899 AliceUa (Sp. un.: A. gigantea), CheTi-eux in: Bull. Soc. zool. France, «.2-tp. 154. 



Head short, hollowed in front. Side-plates not so deep as their respective 

 Segments. Eyes large, imperfectly developed. Antennae 1 and 2 slender. 

 Antenna 1 with accessory flagellura well developed. Lobes of lower lip 

 apically naiTowed. Mandible with broad dentate cutting edge, accessory 

 plate on left mandible denticulate, molar consisting of a narrow, spinulose, 

 backward-pointing lamina, palp short, 3'^ Joint dilated, strongly setose. 

 Maxiila 1, inner plate obliquely truncate, fringed with 16 plumose setae, 

 outer plate with 9 spines, 2^ Joint of palp long, with 23 apical spines. 

 Maxiila 2, inner plate a little shorter than outer, each carrying long 

 plumose setae. Maxillipeds, inner plates obliquely truncate at apex, outer 

 plates broad, nearly reaching end of palp's 2^ Joint, ultimate Joint of palp 

 dactyliform. Gnathopod 1 short, simple. Gnathopod 2 long, slender, feebly 

 subchelate. Uropod 3, rami long, equal, lanceolate. Telson elongate, some- 

 what tapering, cleffc nearly to the base. 



1 species. 



1. A. gigantea Chevreux 1899 A. g., Chevreux in : Bull. Soc. zool. France, 

 c. 24 p. 154 f. 1—6. 



Pleon Segments 3 — 6 dorsally gi'ooved and slightly bicarinate. Head in front 

 formiug a kind of vault, at bottom of which the antennae 1 and 2 are inserted. 

 Side-plate 5 less deep than side-plate 4, much broader than deep. Pleon 

 Segment 3, postero-lateral corners quadrate. Eyes opaque white or orange, 

 irregularly reniform, without trace of ocelli. Antenna 1, 2^ Joint not half 

 as long as 1***, 3"^ very short, flagellum 35-jointed, accessory flagellum 9-jointed. 

 Antenna 2 a little the longer, ultimate Joint of peduncle much longer than 

 penultimate, flagellum 60-jointed. Epistome little prominent, upper lip with 

 unsymmetrical apex, feebly bilobed. Gnathopod 1, 6*^ Joint tapering, rather 

 shorter than 5*^ finger more than one third as long as 6^\ Gnathopod 2 

 more than twice as long as gnathopod 1, 6*'^ Joint very slender, nearly as 

 long as 5*^, its front and bind margins parallel, finger feeble and short. 

 Peraeopods 1 and 2 not longer than gnathopod 1, joints 2 — 4 rather robust, 

 the following slender, very short. Peraeopods 3 — 5, 2^ Joint somewhat 

 expanded, the rest slender. Peraeopods 4 and 5 equal, longer than peraeopod 3, 

 finger very short. Pleopods 1 — 3, rami very long, many-jointed. üropods 1 and 2, 

 outer brauch nearly smooth, rather shorter and naiTOwer than the spinulose 

 inner brauch, üropod 3, rami fringed with long plumose setae. Telson 

 with numerous little groups of spinules along back of each lobe, apex of 

 each emarginate, carrying 2 spines. Colour white tinted with greenish 

 yellow. L. reaching 140 mm. 



North-Atlantic (lat. Sl» N., long. 28" W.). Depth 5285 m. 



38. Gen. Uristes Dana 



1849 Uristes, J. D. Dana in: Amer. J. Sei., ser. 2 j;. 8 p. 136 | 1852 U. (Sp. un.: 

 U.gigas), J. D. Dana in: P. Amer. Ac, v.2 p. 209 | 1862 Tl., Bäte, Cat. Amphip. Brit. 

 Mus., p.89 1 1888 U., T. Stebbing in: Rep. Voy. Challenger, u29 p.263 fl893 ü., 

 A. Della Valle in: F. Fl. Neapel, j;. 20 ]). 836 | 1899 U., T. Stebbing in: Ann. nat. Hist., 

 ser. 7 W.4 p. 211 | 1891 Pseiidotryphosa, G. 0. Sars, Crust. Xorway, v.l p. 83 | 1893 

 Tryphosella (part.), J. Bonnier in: Bull. sei. France Belgique, v. 24 p. 170. 



