676 Neohela, Unciola 



Peraeon segments 1 — 4 laterally rather expanded and angularly produced 

 in front. Head, rostrum obsolete; front corners acute, little produced, sides 

 projeeting outward in a sharp tooth. Side-plates 1 — 3 acute in front. 

 Pleon Segment 3 without postero-lateral angles. Eyes represented on each 

 side by a small patch of opaque wbitish pigment. Antenna 1 longer than 

 body; 2^ Joint 2 — 3 times as long as 1»*, 3<i rather longer than P*; flagellum 

 longer than peduncle, many-jointed, accessory flagellum not as long as 3"^ Joint 

 of peduncle, 6 — 10-jointed. Antenna 2 longer; ultimateand penultimate joints of 

 peduncle very long, spinulose all round like peduncle of antenna 1 ; flagellum 

 longer than peduncle, many-jointed. Gnathopodl, ö^^joint densely setose, about 

 as long as 2"^ or 6*^», 6*^^ also densely setose, widening gradually to the transverse 

 palm, which has 2 sharp teeth in the middle, and is deflned by a 3^, the Prolong- 

 ation of the hind margin; finger projeeting much beyond palm, its outer margin 

 densely setose. Gnathopod 1 in 9 like that of ö, but less strong. Gnatho- 

 pod 2 smaller; 5*^ Joint shorter than 2^, much narrower than 6*^ which 

 widens to the oblique straight palm, deflned by an obtuse angle; finger 

 slender, setose on outer margin, reaching rauch beyond palmar spines. 

 Peraeopods 1 and 2, 5*^ and 6^^ joints subequal; finger slight. Peraeopod 3, 

 5^^ Joint much shorter than 6*^, finger slight. Peraeopods 4 and 5 much 

 longer than preceding; 5*^ Joint short, finger falciform, sti'ong. Uropod 1, 

 outer ramus in d, not in 9, widened. Uropod 3, ramus nearly thrice as 

 long as peduncle. Telson triangulär, with obtuse apex. Colour yellowish, 

 semi-pellucid. L. Q 25, ö 28 — 30 mm. 



Arctic Ocean, North-Atlantic, North-Sea and Skagerrak (West- and Xorth-Norway, 

 depth 188 — 514 m; Spitzbergen; Farö Isles, down to 2288 m; Baffin Bay); Kattegat. 



2. N. phasma S. I. Sm. 1881 N. p., S. I. Smith in: P. U. S. Mus., v. 3 p. 448 | 

 1894 N. p., G. 0. Sars, Crust. Norway, v. 1 p. 624, 625 | 1693 N. monstrosa (part.), 

 A. Della Valle in: F. Fl. Neapel, v. 20 p. 343. 



d. Head, rostram .slightly prominent, obtusely angular. Eyes large 

 and prominently convex, salmon-coloured (in spirit). Antenna 1, 2^ Joint 

 more than thrice as long as 1^*, 3*^ considerably longer than 1^*; accessory 

 flagellum as long as 3^ Joint of peduncle, 9-jointed. L. 26 mm. 



North-Atlantic (South of New England). Depth 680 m. 



9. Gen. Unciola Say 



1818 Unciola (Sp. un.: XJ. in-orata). Say in: J. Ac. Philad., v. lll p. 388 | 1888 

 U., T. Stebbing in: ßep. Voy. Challenger, v. 29 p. 1168 | 1893 Z7., A. Della Valle in: 

 F. Fl. Neapel, v. 20 p. 336 \ 1894 Tl., G. O. Sars, Crust. Norway, v. 1 p. 619 | 1845 

 Glauconotne (Sp. un.: (?. leucopis) (non Goldfuss 1826, Bryozoa!), Kreyer in: Naturh. 

 Tidsskr., ser. 2 v.l p. 491, 501 | 1876 G., A. Boeck, Skand. Arkt. Amphip., u2 p. 636 | 

 1862 Dryope, Driope (non Dryope Robineau-Desvoidy 1830, Diptera!), Bäte, Cat. 

 Amphip. Brit. Mus., p. 276; t. 47. 



Body slender, rather depressed; peraeon long, pleon segment 6 very 

 Short. Head Square, with somewhat projeeting front corners. Side-plates 

 all shallow. Pleon segment 3, postero-lateral corners acute, usually with 

 sinus above. Eyes, when present, small, on front corners of head. Antenna 1 

 the longer, with small accessory flagellum. Antenna 2 the stouter, and 

 stouter in ö than in 9 . Upper lip unsymmetrically büobed. Lower lip 

 normal. Mandible normal, 3*^ Joint of palp naiTOw, shorter than 2^. Maxilla 1, 

 inner plate small, with few setae, outer with 9 apical spines; 2** Joint of 



