42 Nonnanion, Paratryphosites 



beyond the 3-jointed palp, of which the 2^ Joint is shorter than the 1^*^. 

 Gnathopod 1 subchelate, 3^ Joint longer than 4*^, 6*^^ greatly expanded, 

 broader than long, 7^^ as long as the breadth of 6**^. Gnathopod 2 minutely 

 chelate. Peraeopods 1 — 5 slender. Peraeopods 3—5, 2<^ Joint longer than 

 broad. ßranchial vesicles almost simple, üropod 3, peduncle long, rarai 

 narrowly lanceolate, outer slightly the longer. Telson short, entire, rounded 

 quadrangular. 



2 species. 



Synopsis of species: 



Gnathopod 1, process of 5tli Joint obtuse 1. N. quadrimanus . p. 42 



Gnathopod 1 , process of oth Joint acute 2. N. sarsi p. 42 



1. N. quadrimanus (üate & Westw.) 1868 Opis quadrimana, Bäte & Westwood, 

 Erit. sess. Crust.. f. 2 p. 503 f. | 1895 Normanion amblyops. G. 0. Sars, Crust. Norway, 

 V. 1 p. 674 1. 1 f. 1. 



Eyes large and confluent, Visual Clements imperfectly developed, light 

 reddish brown, slightly areolated. Antenna 1, 1^* Joint not twice as long 

 as 2^ and 3*^ combined, flagellum with 6 joints, 1^* rather long, accessory 

 flagellum 4-jointed. Antenna 2 in Q , ultimate Joint of peduncle shorter than 

 penultimate, flagellum 6-jointed. Gnathopod 1, 3^ Joint considerably longer 

 than 4*^, 5^^ with a comparatively short and obtusely rounded expansion, b^^ 

 much broader than it is long, palm transverse, defined below by a dentiform 

 projection with a comparatively small spine on each side, 7*^ Joint or finger 

 rather slender and perfectly smooth. Telson, as figured, scarcely longer 

 than broad. Body pellucid, pale yellowish with lateral orange patches. 

 L. 9 5-5 (Sars), about 3 mm (Bäte & Westwood). 



Trondhjemsfjord. Parasitic on fish, from 370 — 570 m. 



2. N. sarsi Stebb.*) ?1871 Normania qvadrimana (err., non Opis quadrimana 

 Bäte & Westwood 1868!), A. Boeck in: Forh. Selsk. Christian., 1870 p. 120 | ?1872 & 76 

 N. q., A. Boeck, Skand. Arkt. Amphip., vA t.6 f. 3; u2 p. 188 | 1890 N. q., G. 0. Sars, 

 Crust. Norway, v. 1 p. 33 t. 13 f. 1 | 1895 Normanion qvadrimanus, G. 0. Sars, Crust. 

 Norway, v. 1 p. 674. 



Head rather deep, lateral corners angular, only slightly projecting. 

 Body somewhat compressed, back evenly vaulted. Eyes large, oval, Visual 

 Clements unusually large, brownish, with orange-coloured coating. Antenna 1, 

 flagellum with 5 joints, 1** of no great length, accessory flagellum slender, 

 3-jointed. Antenna 2 in 9 , flagellum 4-jointed. In other respects antenna 1 and 2 

 as in N. quadrimanus. Gnathopod 1, 3* Joint a little longer than 4*^, 5*^^ forming 

 a narrow projecting lobe, 6^^^ a little broader than long, palm transversely 

 truncated and armed below with 3 strong spines, 7*^ Joint strongly serrate 

 on concave margin. Telson a little longer than broad (Sars), broader than 

 long (Boeck). Body whitish, pellucid, with yellowish intestine and dark 

 bluish ovaries. L. 5 (Sars), 4 mm (Boeck). 



North-Ätlantic, North-Sea and Skagerrak (South- and West-Norway). Parasitic on fish. 



24. Gen. Paratryphosites Stebb. 



1871 Hippomedon (part.), A. Boeck in: Porh. Selsk. Christian., 1870 p. 102 1 1899 

 Paratryphosites (Sp. typ.: Lysianassa abyssi), T. Stebbing in: Ann. nat. Hist., ser. 7 

 V.4 p. 206. 



Pleon Segment 3, postero-lateral angles acutely upturned. Antenna 1, 

 1^* Joint of flagellum not very large, accessory flagellum small. Antenna 2, 



*) Nom. nov. After Georg Ossian Sars. 



