306 Apherusa 



Crust. Xorway, v. 1 p. 439 t. 155 f. 1 | 1858 Ämpliithoe macrocephala, M. Sars in: Forh. 

 Selsk. Christian., p. 142 | 1859 Paramphithoe elegans, R. M. Bruzelius in: Svenska 

 Ak. Handl., n. ser. v.3 nr. 1 p. 75 t. 3 f. 14 | 18H1 AmjihitJiopsis e., A. Boeck in: Forh. 

 Skand. Naturf., MedeSp. 662 | 1862 Atylusbispinosus -\- Pherusae., Bäte, Cat. Amphip. 

 Brit. Mus., p. 140 t. 27 f. 1; p. 377 | 1868 F. pontica, Czerniavski in: Syezda Russ. Est., 

 Syezda 1 Zool. p. 110 t. 8 f. 15. 



Pleon Segments 1 and 2 each produced into a dorsal tooth. Head» 

 rostruni distiuct, acute, lateral corners small, angular, post-antennal forming 

 a Short deflexed point. Side-plate 1 subangular in front, a little expanded 

 distally. Pleon segment2, postero-lateral corners acutely produced, segmentS, 

 postero-lateral corners acute, margin above serrate, upper corner forming 

 a Sharp upturned point, followed by a deep sinus with a bidentate projection 

 in it or margin above with only 4 teeth (Czerniavski). Eyes large, roundish, 

 dark brown. Antenna 1 in 9 scarcely more than ^|.^ as long as body, 1^* Joint 

 longer than 2^ and 3*^ combined, flagellum nearly 4 times as long as peduncle, 

 30-jointed. Antenna 2 in Q nearly twice as long, ultimate Joint of peduncle 

 rather longer than penultimate, flagellum long and slender. Antennae 1 

 and 2 in d longer than in 9, and setose on confrontiug edges of peduncle; 

 antenna 2, flagellum with 60 — TOjoints (Boeck). Gnathopods 1 and 2 in 9 

 slender, feeble, 5*^ Joint in gnathopod 1 longer than 6^**, in gnathopod 2 

 equal to it, 6*^ Joint narrow oblong, palm oblique, much shorter than bind 

 margin. In d the band is very often elougate piriform, narrowed at the 

 hinge of the long weak finger, and the band is longer than the wrist or 

 5**^ Joint (Czerniavski). Peraeopods rather slender, spinulose, 2*^ Joint in 

 peraeopods 3 — 5 oval, bind margin slightly sen-ate, largest in peraeopod 5. 

 Uropod 3 reaching much beyond the others, rami spinulose, inner rather the 

 longer, its outer edge bulging at the base. Telson triangulär, fuUy twice 

 as long as broad, apex very minutely tridentate. Colour variable, brightly 

 mottled. L. 9 6 mm, longer in greater depths. 



Arctic Ocean, North-Atlantic, North-Sea and Skagerrak (Norway, France, Great 

 Britain); Kattegat; Mediterranean. 



4. A. megalops (0. Sars) 1882 HaUragesm., G. 0. Sars in : Forh. Selsk. Christian., 

 nr. 18 p. 102 t. 5 f. 4 | 1893 Apherusa m., G. 0. Sars, Oust. Norway, v. 1 p. 443 t. 15ft 

 f. 2 I 1893 Acanthozone fulvocincta (part.), A. DellaValle in: F. Fl. Neapel, «;.20 p. 614. 



Pleon Segments 1 and 2 each produced into a dorsal tooth. Head, 

 rostrum obsolete, lateral corners little prominent, transversely ti'uncate, post- 

 antennal strongly produced, acute, upper edge serrulate. Side-plates 1 — 3 

 rather small, rounded quadrangular, slightly seiTate below. Pleon segment 2, 

 postero-lateral corners a little produced, segment 3, postero-lateral corners 

 quadrate, margin above obliquely truncate, regularly seiTate, the deep sinus 

 above containing a simple projection within. Eyes very large, obliquely oval, 

 nearly contiguous above, dark brown. Antenna 1 scarcely ^/.j as long as 

 body, 1*** Joint as long as 2*^ and 3*^ combined, apically toothed, flagellum 

 twice as long as peduncle. Antenna 2 twice as long, ultimate and pen- 

 ultimate joints of peduncle equal, 1^* Joint of flagellum much the longest. 

 Gnathopods 1 and 2 nearly as in A. tridentata (p. 305), peraeopods 1 — 5 

 rather more slender, m'opod 3 also similar but rather more elongate, telson 

 differing in the apical border, which has a rounded notch between two acute 

 points. Colour semipellucid, tinged with orange, transversely banded with 

 light red. L. o 11 mm. 



Varangerfjord [North-Norway]. Depth 94 — 123 m. 



