182 Urothoe, Urothoides 



in width, 4^^ Joint longer and wider than 3*, 5'^ longer than broad, not broader 

 than 4*^, finger rather narrow, distal half slenderly taperiug, with 7 sraall 

 tubercles on front margin. Uropod 1, rami smooth or almost smooth, 

 nearly straight, subequal; uropod 2 rauch smaller, otherwise similar; uropod 3, 

 rami rather broad, plumose, outer rather the longer. Telson longer than 

 broad, cleft nearl)^ to the base, with spinule and setule on each apex. 

 Colour in life, adorned with rose-coloured markings (Bäte), yellowish, changing 

 in the 9 to light orange (Sars). L. 4 — 6 mm. 



North-Atlantic (England, Scotland, West-France, Azores, Norway). 



U. bairdii Bäte 1862 U. h., Bäte, Cat. Amphip. Brit. 31us., p. 114 t. 19 f . 1 ; 

 1871 U. norvegica (err., non A. Boeck 1861!), A, Boeck in: Forh. Selsk. Christian., 1870 

 p. 138 i 1891 ü. marinus (part.), T. Stebbing in: Tr. zool. Soc. London, v.lSi p.7 \ 1893 

 U. irrostrata (part.), A. DellaValle in: F. Fl. Neapel, v. 20 j). 664. 



L. 5 mm. 



Moray Firth. 



U. iip-ostrata Dana 1853 & 55 ZI. irrostratus, J. D. Dana in: U. S. expl. Exp., 

 v.Vdu p.922 t. 62 f. 6a— f | 1891 U. L, T. Stebbing in: Tr. zool. Soc. London, t;. 13i 

 p. 10 I 1893 U. irrostrata (pari.), A. Della Valle in : F. FI. Neapel, v. 20 p. 664. 



Antenna 1, flagellum 6- or 7-jointed, accessory flagellum 2- or 3-jointed. Peraeo- 

 pods 4 and 5, finger nodulose on front margin. 



Sooloo Sea. 



U. rubra Giles 1888 U. ruber, G. M. Giles in: J. Asiat. Soc. Bengal, v.57 p.246 

 1. 11 ! 1893 U. r., A. Della Valle in: F. Fl. Neapel, u 20 p. 895. 



Colour briglit brick red. L. about 3 mm. 



Bay of Bengal (Banks of Chittagong). Surf'ace. 



8. Gen. Urothoides Stebb. 



1891 Urothoides (Sp. im. : U. Idchneessä), T. Stebbing in: Tr. zool. Soc. London, 

 V. 13 1 p. 26. 



2 . Head with obtusely produced and deflexed rostrum. Antennae 1 and 2, 

 mouth-orgaus, gnathopods 1 and 2, peraeopods 1 and 2 nearly as in Urothoe 

 (p. 128). The anterior gastric lobes (trituratiug organs) scautily armed, not 

 profusely as in Urothoe. Peraeopods 1 — 5, finger slender, not nodulose. Peraeo- 

 pod 3, 2^ Joint expanded but not quadrate, 4*^ wider than 5*^. Peraeopod 4 with 

 2"^, 4*^ and 5*^ joints much expanded, 4**^ longer and wider than 5*^. 

 Peraeopod 5 much shorter than peraeopod 4, 2"^ Joint greatly expanded and 

 produced, as long as rest of limb, which is not expanded. Uropod 1, rami 

 stiliform, subequal, almost smooth; uropod 2 much smaller, rami slender, 

 smooth, subequal; uropod 3, outer ramus of 2 equal joints, inner spiniform, 

 not half the length of the outer. Telson little longer than broad, cleft nearly 

 to the base, apices acute, not dehiscent. — d unknown. 



1 species. 



1. TT. lachneessa (Stebb.) 1888 Urothoe l, T. Stebbing in: Rep.Voy. Challenger, 

 V. 29 p. 825 t. 57 | 1893 Urothoe lachneessa, A. DellaValle in: F. Fl. Neapel, v. 20 p.667 

 t. 60 f. 13 I 1891 Urothoides lachneessa, T. Stebbing in: Tr. zool. Soc. London, v. 13i p.26. 



Back covered with a sort of bristly down. Head at the base and 

 peraeon dorsally very broad. Pleon segment 2 without plumose setae; 

 Segment 3, postero-lateral angles rounded. Eyes wanting or not perceived. 



