Urothoe 131 



in the row ou disk-«.! margin ol 5*^^ Joint. Gnathopod 2, 6^^^ Joint about ^/^ 

 length of 5^\ with the small convex palm more prominent than usual. 

 Peraeopod 3, 4*^ Joint scarcely longer or broader than 3^, b^^ more than 

 1^2 times as broad as long, with many spines, finger narrowing abruptly 

 to a Sharp apex, its front margiu not nodulous, but finely serrulate. Cropod 1, 

 rami curved. armed with 2 spines; uropod 2 smaller, rami smootli; uropod 3, 

 rami plumose but not densely, outer exceeding length of inner by its small 

 2^ Joint. Telson short, a little broader than long, sides convex, each apex 

 armed with a spinule. Colour of 9 grey, tinted on the back with violet, of 

 ö crimson. L. 5 mm. 



Gulf of Naples, North-Atlantic (West-J'rance). 



5. U. poueheti Chevreux 1888 U. p.. Chevreux in: Bull. 80c. zool. f rance, 

 i;. 13 p. 34 j 1891 U. p., T. Stebbing in: Tr. zool. Soc. London, v. 13i p. 9, 25 | 1893 

 ü.irrostrata (part.), A. DeliaValle in: F. Fl. Neapel, f. 20 p. 664. 



9 unknown. — c?. Body comparatively slender. PJyes very large and 

 dark, meeting on the top of the head. Peraeopod 3, 2<* Joint with hinder 

 angles well rounded, 4**^ not broader than 3*^. not strongly spined, 5*^i not 

 broader than 4*^, finger long, slender, distal half serrate. Uropod 1, rami 

 equal, slender, not quite as long as peduncle, which is more spinöse than 

 in other species, outer ramus with 4 spines; uropod 2, rami equal, slender, 

 shorter than peduncle, outer with 3 spines; uropod 3, rami long. L. 5 mm. 



North-Atlantic (Azores). 



6. U. brevicornis Bäte 1862 U. h., Bäte, Cat. Amphip. Brit. Mus., p.ll6 t.20 

 f. 1 j 1891 V. h., T. Stebbing in: Tr. zool. Soc. London, 1;. 13i p. 23 t.3, 4c 1893 



TJ. irrostrata (part.). A. DeliaValle in: F. Fl. Neapel, ».20 p. 664. 



Eyes in d conspicuous, almost contiguous at the top. Antenna 1 in d, 

 1^* Joint longer than 2*^, flagellum 7-jointed, accessory flagellum 6-jointed, 

 more than half length of primary. Antenna 2, flagellum in 9 shorter than 

 ultimate Joint of peduncle, flagellum in ö 23- or 24-jointed. Maxilla 1, inner plate 

 with 3 setae, 1^* Joint of palp rather longer than 2^. Gnathopod 1 as in 

 U. marina (p. 130), spines on distal margin of 5^^ Joint varying in number. 

 Peraeopod 3, 2^ Joint with angles more acute than usual, other joints as 

 in U. marina, except finger, which tapers gTadually and has tiner nodules. 

 Uropod 1, peduncle longer than in U. marina, equal to the rami, which are 

 slender, subequal, nearly straight, reaching beyond the 2^ pair, outer with 

 3 spinules, inner with 1 — 3 setules; uropod 2, peduncle shorter than rami, 

 which are subequal, straight, with 2 or 3 spinules on outer and a spinule 

 on the inner. Uropod 3 and telson as in Ü. marina. L. about 8 mm. 



St. George's Channel, Bristol Channel and English Channel (Wales and Devonshire). 



7. TT. elegans Bäte 1857 U. e., Bäte in: Ann. nat. Bist., ser. 2 v.ld p. 145 | 

 1861 U. norvegica, A. Boeck in: Forh. Skand. Naturf., Made 8 p.647 \ 1891 ü. n., G. 0. 

 Sars, Crust. Norway, v. 1 p. 138 t. 47 ' 1891 U. elegans -\- U. n., T. Stebbing in: Tr. zool. 

 Soc. London. tJ. 13i p. 13 t. 4; p. 21 t. 4b | 1893 Ü.irrostrata (part.), A. DeliaValle in: 

 F. Fl. Neapel, v. 20 p. 664. 



Eyes moderately large in adult d. Antenna 1, 3^_ Joint ^s length 

 of 2^, flagellum 6-jointed, accessory flagellum 3-jointed. Antenna 2, flagellum 

 in 9 equal ultimate Joint of peduncle, 2- or 3-jointed, flagellum in d 40-jointed. 

 Maxilla 1, inner plate with 2 setae, joints of palp equal. Peraeopods 1 and 2, 

 finger with 3 or 4 distant pointed tubercles. Peraeopod 3, 2*^ Joint rather variable 



