36 Nanuonyx 



3. N. goesii (ßoeck) 1871 Orchomene g., A. Boeck in: Forh. Selsk. Christian., 

 1870 p.lU) j 1872 & 76 0. g., A. Boeck, Skand. Arkt. Araphip., vA t.4 f. 5; v.2 p.l77 | 

 18M0&91 Nannonyx g., G. 0. Sars, Crust. Norway, v.l t. 24 f. 3; p. 72 | 1893 N. g., 

 A. Della Valie in : F. Fl. Neapel, v. 20 p. 794. 



Back broadly rounded. Head with lateral augles broadly rounded« 

 Side-plates deep, 4*'i deeply but not widely eraarginate behind, 5*^ rather 

 deeper than broad. Pleon segment 3, postero-lateral angles quadrate, Mnder 

 edge faiutly crenulate, segment 4 with hump-like dorsal projection. Eyes 

 oval, dark browu. Antenna 1, 1^* Joint twice length of 2<^ and 'i\'^ combined, 

 flagellum short, of 4 joints, 1^* as long as otlier 3 combined, accessory flagellum 

 2-jointed. Antenna 2 in 9 , ultimate Joint of peduncle shorter than either 

 penultimate or antepenultimate, flagellum short, 4-jointed. Mandible, 1^* Joint 

 of palp very short. Maxiila 1, inner plate slender, with singie simple seta 

 on the acute apex, palp without apical spines. Maxiila 2, plates very narrow. 

 Maxillipeds, with many diverging setae about the base, inner plates elongate, 

 outer large and long, minutely crenulate, 4*^ Joint of palp very small, knoblike. 

 ornathopod 1 powerful, none of the joints long, 4*^1, 5*^ and 6*^ joints densely 

 setose, ö^^ and <ö^^ subequal in length, ^^^ tapering, 7*^ very small. Goatho- 

 pod 2, 3^ Joint as long as 5*^ 6*^ very narrow, about half length of the 

 b^^ and narrower. Peraeopods 1 — 5 short and stout, 7*^ Joint very small. 

 Peraeopods 3 — 5, expansion of 2^ Joint overlapping 3*^, 4*^ Joint rather wide. 

 üropod 3 very small, rami shorter than peduncle, outer nearly twice as long 

 as inner, its second Joint minute. Telson rounded quadrangular, apex truncate 

 (notched, Boeck). Colour yellowish, with transverse orange bands. Eggs in 

 pouch dark violet. L. 9 4 mm. 



Arctic Ocean, North- Atlantic and North-Sea (West-Norway). Shallow water to 75 in. 



4. N. thomsoni Stebb.*) 1879 Lysianassa kröyeri (err., non Ephippiphora 

 kroyeri A. White 1847!), G. M. Thomson in: Tr. N. Zealand Inst., ull p. 237. 



Side-plate 1 considerably expanded below, 4*^ very gi-eatly. Pleon 

 Segments 3, 4 and 5 slightly carinate, the postero-lateral angles of 3*^ acutely 

 upturned. Eyes elongate. Antenna 1, 2^ and 3^ joints not extrem ely short, 

 flagellum of few joints, all short. Antenna 2 in 9 , ultimate and penultimate 

 joints of peduncle subequal, flagellum 7-jointed; in ö flagellum rather long and 

 slender. Mandible, molar linear, 1^* Joint of palp rather long. Maxiila 1, inner 

 plate with minute seta on narrowly rounded apex, outer plate with 11 spines, 

 2*^ Joint of palp apparently unarmed. Maxilla 2, inner plate rather the bioader, 

 obliquely truncate. Maxillipeds as in N. goesii, but little 4*^ Joint of palp has a 

 minute nail. Gnathopod 1 not especially stout, 6*^ Joint tapering, without palm, 

 rather longer than o*'^. Gnathopod 2, 3*^ Joint as long as 5*-^, 6*^ not narrower 

 than 5^\ more than half as long. Peraeopods 1 and 2, 4*^ Joint long, 7*^ moderately 

 small. Peraeopods 3 — 5, expansion of 2^ Joint overlapping 3*^, 4*^ rather 

 Wide. Pleopods naiTOW. üropod 3, with inner ramus almost rudimentary, 

 the outer with small 2^ Joint and not louger than peduncle. Telson very 

 small, rather broader than long, sides slightly converging, apex truncate. 

 L. 8 mm. 



South-Pacific (Dunedin [New Zealand]). 



5. N. kidderi (S. 1. Sm.) 1876 Lysianassa k., (S. I. Smith in:) Kidder in: Bull. 

 U. S. Mus., V. 3 p. 59. 



") Nom. nov. After George Malcolm T h o m s o n. 



