Arihis. Westwoodilla 249 



mmi spiuulose, about as long as peduncle. Telsoii almost a Square. Colour 

 whitisb, witli tinge of flesli colour. L. 15 — 20 mm. 



Arctic Ocean, Noi-th-Atlantic, North-Sea and Skagerrak (Greenland, Iceland, 

 Spitzbergen etc.; Xorway, depth 90 — 753 m; Bohuslän); German Ocean? 



10. Gen. Westwoodilla Bäte 



1856 Westivoodea (nom. nud.). Bäte in: Rep. Brit. Ass., Meet. 25 p. 58 | 1857 

 M^eshi'oodia (Sp. un.: W. caecula) (non Brülle 1846, Hymenoptera !), Bäte in: Ann, nat. 

 Hist., ser. 2 v. 19 p. 139 I 1862 Westwoodilla, Bäte, Cat. Amphip. Brit. 3Ius., p. 102 | 

 1871 Halimedon (pari.), A. Boeck in: Forh. Selsk. Christian., 1870 p. 169 ] 1892 H., 

 G. 0. Sars, Crust. Norway, v. 1 p. 326 | 1893 H. (part.), A. Della Valle in: F. Fl. 

 Neapel, v. 20 p. 533. 



Head with frontal process ending in acute rostrum, usually sbort. 

 Side-plates of moderate size, 4*^ with lower bind corner not produced, 

 narrower tban 5*^, Eyes contiguous on frontal process. Antenna 1 sborter 

 tban antenna 2, flagellum of antenna 2 in d very elongate. Upper lip witb 

 angular sides. Lower lip, inner lobes well defined. Mandible skong, cuttiug 

 edge indistinctly deutate, molai* well defined, palp slender, 2*^ Joint longest, 

 mucb curved. Maxilla 1, outer plate carrying 8 spines (Schneider). Maxillipeds, 

 inner plates ratber sbort, outer reaching apex of 2*^ Joint of moderate-sized 

 palp. Gnatbopods 1 and 2 nearly alike, ratber feeble, 5^^ Joint long, ending in 

 sbort setose expansion, 6*^ ratber small. oblong oval. Peraeopods 1 — 5, 

 iiropods 1 — 3 and telson as in Monoculodes (p. 258). 



5 species. 



Synopsis of species: 



J Frontal process deflexed — 2. 

 ) Frontal process horizontal — 4. 



j Kostral apex deflexed 1. W. brevicalcar . p. 249 



\ Rostral apex not deflexed — 3. 



j Eyes oval, of moderate size 2. W. caecula . . . p. 250 



) Eyes rounded, unusnally large 3. "W. megalops . . p. 250 



Eyes not prominent, at centre of taijering frontal 



process 4. W. acutifrons . . p. 251 



Eyes prominent, at distal end of elongate frontal 



process 5. "W. rectirostris . p. 251 



1. W. brevicalcar (Goes) 1866 Oedicerosb., Goes in: Öfv. Ak. Förh., u22 

 1)527 t.39 f. 22 | 1871 Halimedon b., A. Boeck in: Forh. Selsk. Christian.. 1870 p.l7I | 

 1876 H.*b., A. Boeck, Skand. Arkt. Amphip., v.2 p. 286 t. 15 f. 3 | 1883 H. b., J. S. 

 Schneider in: Tromse 31us. Aarsh., r. 6 p. 37 t. 2 f. 11 | 1892 H. b., G. 0. Sars, Crust. 

 Nonvay, v.l p. 331 t. 116 f. 3 i 1893 H. b. (part.), A. DellarValle in: F. Fl. Neapel, 

 V. 20 p' 539. 



Ratber sbort and stout. Head frontal process sbort, evenly curved, the 

 acute deflexed rostrum reaching a little beyoud middle of 1^* Joint of antenna 1. 

 Side-plate 1 little expanded distally. p]yes of moderate size, rounded oval, 

 bright red, at base of frontal process. Antenna 1 in 9 reaching beyond peduncle 

 of antenna 2, 2^ Joint sborter tban 1***, flagellum a little sborter tban peduncle, 

 7-jointed. Antenna 2, ultimate Joint of peduncle sborter tban penultimate, 

 flagellum about as long as the 2 combiued. Gnatbopod 1, b^^ Joint not 

 mucb longer tban its width at the soraewbat projecting process, 6*^^ Joint 



