168 Leucothoe 



Side-plate 1 slightly wideiied below, 2*^ broader than long, 4*^*^ pentagona!, 

 with lower front angle acute. Pleon segment i], postero-lateral angles acutely 

 upturned forming a sinus. Eyes rounded tiiangular, dark brownish. Antenna 1 

 much larger than antenna 2, P* Joint without apical process, as long as 2*^, 

 flagella 9-jointed. Antenna 2 sleuder, ultimate Joint of peduncle not mucb shorter 

 than penultimate, flagellum 7- or 8-jointed. Gnathopod 1, 2^ Joint densely 

 setose on both margins, 5*^ dilated at base, process not very slender, inner 

 margin serrate, apex a little bent, 6*^ naiTOw, innei" margin smooth, finger 

 ^4 length of 6*^^ Joint. Gnathopod 2, 5^^ Joint tridentate at apex, 6*^ tapering 

 distally, palm very oblique, its edge quite smooth and nearly straight, 

 finger abruptly bent at base. Peraeopods 1 — 5 very sleuder, 6*^^ Joint elongate. 

 Uropod 3, rami nearly as long as peduncle. Telson triangulär oval, little 

 longer than broad, apex well rounded. Colour pellucid with yellowish tinge 

 and irregulär orange and pinkish specks. L. 9 6 mm. 



North- Atlantic, North-Sea and Kattegat (Kullaberg [SwedenJ; Kopervik [Soiith- 

 west-Norway|, depth 75 — 113 m; Shotland Isles). 



L. afflnis Stimps. 1855 L. a., Stimpson in: P. Ac. Philad., v.7 p. 394 | 1862 

 L. a., Bäte, Cat.Amphip.Brit.3Ius., p. 378 | 1893 L.richiardii? (err., non Mich. Lessona 

 1865!), A. DellaValle in: F. Fl. Neapel, t).20 p. 656. 



L. 125 mm. 



False Bay [Cape of Good Hope]. On gravelly bottom in the coralline zone. 



L. antarctiea Pfeff. 1888 L. a., Pfeffer in: Jahrb. Hamburg. Anst., v.ö p. 128 

 t.2 f. 4 I 1893 L. sjntiicarpa (part.), A. DellaValle in: F. Fl. Neapel, v.20 p. 653. 



Agrees generally with L. spinicarpa (p. 165). L. about 5 mm. 



South-Atlantic (South Georgia). 



L. crassimana Kossm. 1880 L. c, Kossmann, Reise Roth. Meer., v. 2 1 Malacost. 

 p. 131 t.l3 f. 9, 10 j 1898 L.c, Sowinski in: Mem. Soc. Kiew, ».15 p.492 1. 11 f.20-22; 

 t. 12 f. 7, 8 I 1884 L. spinicarpa (err., non Gammarus sjnnicarjms Abildgaard 1789!), 

 Miers in: Rep. Voy. Alert, p. 313 | 1893 L. s. (part.), A. DellaValle in: F. Fl. Neapel, 

 V. 20 p. 653. 



L. 7—7-5 mm. 



Red Sea, Bosphorus. 



L. diemenensis Hasw. 1880 L. d., Haswell in: P. Linn. Soc. N.S.Wales, vA 

 p.262 t.9 f. 5 I 1893 L. spinicarpa (part.), A. DellaValle in; F. Fl. Neapel, v. 20 p.653. 



Scarcely distingüishable from L. commensalis (p. 166). But eyes round, large; 

 gnathopod 2, the process of the 5tJi Joint bifurcate and the finger relatively longer. 



South Pacific (Tasmania). 



L. graeilis Hasw. 1880 L. g., Haswell in: P. Linu. Soc. N.S.Wales, vA p.263 

 t. 10 f. 2 I 1893 L. spinicarpa (part.), A. DellaValle in: F. Fl. Neapel, t?.20 p.653. 



Not distinguished from L. commensalis or L. diemenensis (p. 166, 168). L. 10 mm. 

 South-Pacific (Tasmania). 



L. grandimana Stimps. 1853 L. grandimanus, Stimpson in: Smithson. Contr.. 

 V. 6' nr. 5 p. 51 t. 3 f. 37 | 1893 L. g., A. DellaValle "in: F. Fl. Neapel, v. 20 p. 656. 



Probably identical with L. spinicarpa (p. 165). L. 11 mm. 



Fundy Bay (GranÖ Manan). On shelly bottom, depth 55 ra. 



