680 Unciola 



the rest, subacute iu front in ö' , not in 9 . Pleon segment 3, postero-lateral 

 Corners acute, with sinus above. Eyes represented only by an irregulär patch 

 of whitish pigment on each side. Antenna 1 long and slender, 2*^ Joint 

 longer than 1^*, nearly thrice as long as 3*^, flagellum subequal to peduncle, 

 14-jointed, accessory flagellum with 2 joints, 2^ minute. Antenna 2 in d", 

 antepenultimate Joint of peduncle thick, lower distal end round, slightly 

 produced, penultimate also thick, ultimate not very slender; in Q these joints 

 are much more slender; flagellum as long as ultimate Joint of peduncle 

 in 9, shorter in d, 6-jointed. Gnathopod 1 in d, b^^ Joint as broad as 

 long, 6*^ moderately stout, bind margin not extremely short; palm defined 

 by an obtuse angle against which the apex of closed finger impinges, leaviug 

 2 palmar cavities. Gnathopod 1 in 9 , 2^, 5*^ and ü^^ joints less broad 

 than in d', with the palm oblique but nearly straight. Gnathopod 2 slender, 

 stouter in d than in 9 ; 5*** Joint large, much longer than 6**^, densely 

 setose on bind margin, 6^^ tapering distally, without palm; finger veiy sraall. 

 Peraeopods J - — 5 very slender. Peraeopods 3 — 5, 2*1 Joint narrow, not setose. 

 Brancbial vesicles veiy small. üropods 1 and 2 not very robust, spinöse, 

 üropod 3, laminar inner process of peduncle rather narrow, armed with a 

 Single spine; inner ramus not indicated, outer produced beyond process of 

 peduncle, sublinear, with 5 long apical setae and 1 seta on outer margin. 

 Telson subrotund, with 2 spinules on each side. Colour pale yellow, banded 

 with light orange; whitish patches along the sides. L. 95, d 6 mm. 



Arctic Ocean, North- Atlantic, North-Sea and Skagerrak (Norway from Christiania- 

 fjord to Vadsö, depth 94— 564 m; Greenland, depth 90 m; British Isles); Kattegat. 



6. U. erenatipalma (Bäte) 1855 U. irrorata (err., non Say 1818!), Gosse in: 

 Ann. nat. Hist., ser. 2 v. 16 p. 307 j 1862 Dryope i., Driope i. -\- Dryope crenat ipalma, 

 Driope c. Bäte, Cat. Amphip. Brit. Mus., p. 276 t. 47 f. 1; p. 277 t. 47 f. 2 j 1863 

 Dryope i. -\- D. crenntipalmnta, Bäte & Westwood, Brit. sess. Crust., v. 1 p. 488 f. ; p. 490 f. } 

 1874 D. erenatipalma, T. Stebbing iu: Rep. Devonsh. Ass., v.ü p. 770 | 1889 Unciola 

 crenatipalmata, J. Bonnier in: Bull. sei. France Belgique, i;. 20 p. 392 1. 12, 13 | 1893 

 Z7. c, Chevreux & E. L. Bouvier in: Ann. Sei. nat., ser. 7 ?;. 15 p. 138 t. 2 f. 12 | 1893 

 U.c, A. DellaValle in: F. Fl. Neapel, v.20 p. 340 t. 55 f. 32— 36 | 1896 U. c, J. 

 Bonnier in: Ann. Univ. Lyon, «;. 26 p. 666. 



Body rather broad, depressed. Head, rostrum short, acute ; lateral corners 

 with inner point acute. Side-plates 1 and 2 with front corner acute. Pleon 

 segment 3, postero-lateral corners acute, with sinus above. Eyes small, rounded, 

 remaining dark in spirit. Antenna 1, 2^ Joint rather longer than P*, less 

 or not more than twice as long as 3^; flagellum shorter than peduncle, 

 11-jointed; accessory flagellum with 2 joints, 2*^ minute. Antenna 2, ante- 

 penultimate and penultimate joints of peduncle in d stout but not laminar, 

 ultimate nearly as long as penultimate, flagellum as long as ultimate, 9-jointed. 

 Gnathopod 1, 2*^ Joint broad except at base, 5*^ short, broad, produced into 

 a blunt setose process, 6*^ broad, produced into a blunt basal process reaching 

 beyond process of 0*^ Joint; the long oblique palm in d forming 3 cavities, 

 in 9 convex between 2 veiy shallow cavities, in both sexes minutely crenulate; 

 finger meeting basal process, its inner margin denticulate, outer with severe! 

 setae. Gnathopod 2 rather feeble; 5*^ Joint rather shorter than G^^\ which 

 is rectangular, having in d an almost transverse, slightly convex palm, 

 over which the small finger closes tightly, while in 9 the palm is deeply 

 excavate, the closed finger leaving a conspicuous gap. Peraeopods 1 — 5 

 nearly as in U. in'orata (p. 678). üropods 1 and 2, rami somewhat unequal. 

 üropod 3 very small, inner process of peduncle tipped with a spine and 



