388 Gammare! Ins. Eucrangonyx 



truncate, not produced into a tooth, integiimeut very miniitely sqiiamose. 

 Head, rosti'um short, obtiise, lateral coruers evenly roimded. Side-plate 5, 

 hind lobe deeper than front. Pleon segment M, postero-lateral corners 

 obtusely angulai-. Eyes oblong, dark brown. Antennae 1 and 2 subequal. 

 Anteuna 1, flagellum 21-jointed, accessory Üagellura 4-or5-jointed. Antenna 2, 

 flagellum 22- or 23-jointed. Gnathopods 1 and 2, exactly alike both in sizo 

 and structure (Sars). Peraeopods 1 — 5 short and stont, snbequal. Peraeopod 5 

 the longest, 2^ Joint witli liind margin not sinuons. üropod 3 less setoso 

 than in G.liomari (p. 387). Telson oval quadrangular, scarcely longer than broad, 

 little tapering, with a small apical emargination flanked by a pair of spinules. 

 Colonr olive-green (Liljeborg), or yellowish, mottled witli reddish brown (Sars). 

 L. reaching 12 mm. 



Arctic Ocean, North-Atlantic, North-Sea and Skagen'ak (Vardö [North-Norway]. 

 South- and West-Norway, Kolinslän); Kattegat. French and British localities 

 doubtful. 



G. carinatus (H. Rathke) 18B7 Amathia carinata, H. ßathke in: Mem. pres. 

 Ac. St.-Petersb., u3 p. 375 t. 5 f. 29-35 1 1862 A.c., Bäte, Cat. Amphip. Brit. Mus., 

 p. 198 t. 35 f. 10 I 1868 Amathilla c, Czerniavski in: Syezda ßuss. Est., Syezda 1 Zool. 

 p. 131 ] 1899 Oamniarellus carinatns, G.liomari (part.)?, T. Stebbing in: Tr. Linn. Soc. 

 London, ser. 2 v. 7 p. 423. 



Probably synonym to G. homari (p. 387). Carina only on peraeon segments 5 — 7 

 and pleon segments 1 — 3. L. about 15 mm. 



Black Sea. 



13. Gen. Eucrangonyx Stebb. 



1899 Eucrangonyx, T. Stebbing in: Tr. Linn. Soc. London, ser. 2 v.l p. 423. 



Like Crangonyx (p. 370) in genei-al, but with a small inner ramus to 

 the 3*^ uropod, telson emarginate. 



5 species. 



Synopsis of species: 



f Telson elongated in <5, not in $ 1. E. mucronatus . p. 388 



\ Telson alike in ß and ? — 2. 



IByes wanting 2. E. vejdovskjri . p. 389 



Eyes devoid of black pigment 3. E. packardii . . p. 389 

 Eyes with black pigment — 3. 



f Side-plate 4 not unusually large 4. E. gracilis . . . p. 390 



\ Side-plate 4 unusually large 5. E. antennatus . p. 390 



1. E. mucronatus (S.A. Eorb.) 1876 Crangonyx m., S. A. Forbes in: Bull. 

 Illinois Mus., v.l p. 6 f . 1 — 7 | 1888 Cm., Packard in: Mem. Ac. Washington, n4i 

 p. 37 t. 5 f. 15 I 1893 C. m., A. Della Valle in: F. Fl. Neapel, v. 20 p. 682 | 1894 C. m., 

 Ohilton in: Tr. Linn. Soc. London, ser. 2 v.6 p.219 | 1899 Eucrangonyx m., T. Stebbing 

 in : Tr. Linn. Soc. London, ser. 2 v.l p. 423. 



Pleon segments 1 — 3, postero-lateral corners broadly rounded. Eyes 

 wanting. Antenna 1 in cJ sometimes *j^ as long as body, 1^* and 2*^ joints 

 subequal, 3*^ 7$ ^^ long as 2^, flagellum about 5 times as long as peduncle, 30 — 

 35-jointed, 2-jointed accessory flagellum a little longer than P* Joint of primary. 

 Antenna 2, ultimate and penultimate joints of peduncle subequal, flagellum 9- or 

 10-jointed. Antenna 1 in 9 about half length of body, flagellum thrice as 

 long as peduncle. Upper lip well rounded. Mandible with several spiues in 



