Photis 607 



2. P. reinhardi Kreyer 1842 P. r., Kreyer in: Naturh. Tidsskr., u4 p. 155 | 

 187« P.r., A. Boeck, Skand. Arkt. Amphip., v.2 p. 554 t. 26 f . 1 | 1893 P. r. (pari.), 

 A. DellaValle in: F. Fl. Neapel, ?;. 20 p. 395 | 1894 P.r.,'G.O. Sars, Crust. Norway, 

 v.l p. 569 t.202 ; 1866 Amphithoe r., Goes in: ÖlV. Ak. Förh., i;.22 p.532 | 1852 Amphi- 

 thoe pygmaea, W. Liljeborg in: Öfv. Ak. Förh., v.9 p. 9 | ?1895 Photis pollex, A. 0. 

 Walker in: P. Liverp. biol. Soc, ».9 p. 312 t. 19 f. 16—19. 



Body rather stout, with broadly vaulted back, Head, lateral lobes 

 acute, not much produced, rounded below. Side-plates 1 — 5 setose on lower 

 margin ; 1^* a little naiTOwed distally ; 5*^ very large, distally obliquely rounded. 

 Pleon Segment 3, postero-lateral corners rounded. Eyes small, rounded, not 

 close to margin of head. Antennae 1 and 2 rather strong and setose. 

 Antenna 1 about half as long as body; 3^ Joint longer than P*, shorter 

 than 2"^; flagellum shorter than peduncle, about 9-jointed. Antenna 2 a 

 little shorter, ultimate and penultimate joints of peduncle subequal, flagellum 

 shorter than peduncle, about 9-jointed. Gnathopod 1 in d robust, 5*^ Joint 

 distally widened, a little shorter than the broadly oblong oval 6*^; palm 

 nearly transverse, a little excavate, defined by an obtuse angle, finger matching 

 palm, denticulate. Gnathopod 2 in d, 2*^ Joint little produced at lower 

 front coruer, 5^^ broadly cup-shaped; 6**^ large, palm transverse, defined by 

 a strong tooth, foUowed by a cavity and than by 2 tubercles near the finger- 

 hinge; finger strong, matching palm. Gnathopod 1 in § as in d, but rather 

 smaller, palm not excavate. Gnathopod 2 in 9 as in d, but smaller, with 

 siuuous palm defined by a projecting angle with palmar spine. Peraeopods 1 — 5 

 comparatively stout. Peraeopods 1 and 2 rather setose. Peraeopod 3, 2^ Joint 

 as broad as long, narrowest distally. Peraeopods 4 and 5 nearly equal in 

 length; 2* Joint oblong oval, narrowing a little distally. üropod 3, outer 

 ramus scarcely so long as peduncle, its 2^ Joint tipped with a long spine. 

 Telson rather broader than long, subtiiangular, with small process on each 

 side of apex. Colour greyish white, with bands of light brown. L. 5 mm» 



Arctic Ocean, North-Atlantic, North-Sea and Skagerrak (Greenland; Iceland j 

 Norway, depth 37 — 94 m; PLiverpool i3ay, depth 4 — 19 m); Kattegat. 



3. P. macrocarpa Stebb. 1888 P. macrocarpus, T. Stebbing in: Rep. Voy. 

 Challenger, v.29 p. 1064 t. 107 | 1893 P. reinhardi (part.), A. Della Valle in: F.FL 

 Neapel, v. 20 p. 395. 



Head, lateral lobes as in P. reinhardi. Side-plates 1 — 5 not specially 

 setose, 1^* distally widened, 5^^ with front lobe large but less deep than 

 4*^. Pleon Segment 3, postero-lateral coniers obtusely quadrate. Eyes small, 

 round, with very few lenses. Antennae 1 and 2 about -/g 

 as long as body. Antenna 1, 1^* Joint rather long, subequal 

 to 3*^, shorter than 2^; flagellum subequal to peduncle, . . _.;_ . xeison 

 14-jointed. Antenna 2, ultimate Joint of peduncle shorter 

 than penultimate; flagellum subequal to peduncle, 12-joiirted. 

 Gnathopod 1, 5*^ Joint rather longer than the oval 6*^ \1 \j-' pods 

 palm minutely pectinate, only defined by palmar spines, 

 finger rather long and broad, with 7 decun^ent teeth. 

 Gnathopod 2 in d, palm excavate, defined by a tooth 

 with palmar spine. Gnathopod 2 in g , 5*^ Joint stout, p^ macrocarpa. 

 but longer than broad, 6*^ broad, oblong oval; palm uropodsandteison. 

 rather oblique, shorter than bind margin, a little overlapped 

 by the dentate finger. Peraeopods 1 and 2, 4*^ Joint long, broad, setose 

 in front, 6*^1 about 1^2 as long as 5*^; finger over half as long as 6*^^ Joint. 

 Peraeopod 3, 2^ Joint rather longer than broad, much narrowed distally, 



