426 Melita 



8. M. obtusata (Mont.) 1813 Cancer (Gamtnarus) obtusatus, Slontagu in: Tr. 

 Linn. Soc. London, r. 11 p. 5 t. 2 f. 7 \ 1818 [?] G. o., Latreille in: Tabl. enc. meth., 

 Crust. Ärach. Ins. t. 836 f. 29 | 1830 Amphithoe obtusata, U. Milne Edwards in: Ann. 

 Sei. nat., u 20 p. 377 | 1879 Melita o., Hoek in: Tijdschr. Nederl. dierk. Ver., vA p. 140 

 t. 10 f. 8, 9 I 1889 31 0., A.M.Norman in: Ann. nat Hist., ser. 6 vA p. 132 ] 1893 

 .¥. 0. (part.). A. DellaValle in: F. Fl. Neapel, v.20 p.7ll 1. 1 f. 7; t. 23 f. 1—19; & ?juv. 

 p. 713 t. 3 f. 14; t. 23 f. 20—23 | 1894 M. o., G. 0. Sars, Crust. Norvvay, v. 1 p. 510 t. 180 

 f. 1 1 1852 Gammarus maculatus (non (t. Johnston 1827!), W. Liljeborg in: Ofv. Ak. 

 Förh., f.9 p. 10 I 1853 G. ohtusunguis, A. Costa in: Rend. Soc. Borbon., n. ser. v.2 p. 176 j 

 1862 Melita obtusata -}- M. jn-oxima -\- Meganioera alderi. Bäte, Cat. Amphip. Brit. 

 Mus., p. 183 t. 33 f. 3; p. 184 t. 33 f. 4; p. 228 t. 40 f. 1. 



Pleon Segments produced to variable number of teeth. Head, lateral 

 coruers broadly rounded, post-anteunal coruers forming a minute tooth. 

 Side-plates 1 — 4 rather deep, P*^ a little widened distally, P* — 3*^ with den- 

 ticle at lower bind corner. Pleou segmeiit 3, postero-lateral angles mucb 

 produced, acute, upturned, margins smooth or slightly sorrate. Eyes small, 

 round, dark. Antenna 1 more than V^ as long as body, 2*^ Joint rather 

 longer than 1***, flagellum longer than peduncle, flagellum about 16-jointed 

 (Sars), accessory flagellum 4-jointed, last Joint minute. Antenna 2, ultimate Joint 

 of peduncle rather shorter than penultimate, flagellum subequal to both com- 

 bined. Mandibular palp very narrow, joints successively longer. Gnathopod 1, 

 ßf'^ Joint as long as 5*'^, rather broad, somewhat triangulär, palm oblique, 

 ill-defined. Gnathopod 2 larger in 9 , 6*^^ Joint longer than 5**\ oblong oval, 

 palm rather oblique, defined by an obtuse angle; in ö 5*^» Joint short, 

 cup-like, 6*** very large, tumid, widest at palm, which is irregularly serrated, 

 and hoUowed near the triangulär defining lobe; finger, which closes into the 

 cavity, is scimitar-shaped, its obtuse apex rounded above and squared below ; 

 (Bäte: palm sometimes less sinuous antl more irregularly denticulate). Peraeo- 

 pods 3^ — 5, 2*^ Joint oval, bind margin distinctly serrate. Uropod 3, outer ramus 

 endiug in a streng spine, which perhaps represents a 2*^ Joint, about once 

 and a half as long as peduncle, inner ramus very small. Telson not nearly 

 reaching end of peduncle of uropod 3, cleft nearly to base, lobes dehiscent, 

 acute, with some spinules ou inner margin. Colour pale brown, mottled with 

 rufous brown, especially about the legs (Montagu). L. 6 — 9 mm. 



North-Atlantic with the adjoining seas (f'rom West-Norway round Europe to Jtaly). 



9. M. amoena H. J. Hansen 1887 M. a., H. J. Hansen in: Yid. Meddel., ser. 4 

 I-.9 p. 147 t. 6 f. 1, la i 1893 M. obtusata (part.), A. Della Yalle in: F. Fl. Neapel, 

 1-.20 p.711. 



d. Body somewhat compressed, pleon segment 1 with 1 very little 

 dorsal tooth, segment 2 with 5, middle small, other 4 very minute, segment 3 

 unarmed, segment 4 with 2 rather small teeth, segment 5 with 2 minute 

 teeth. Head, post-antennal corners not dentiform, Side-plates 1 — 4, lower 

 margin broadly rounded, 1^* the smallest. Pleon segment 2, postero-lateral 

 corners produced to a process rather long, narrow, obtuse. corners of seg- 

 ment 3 acute, upturned. Eyes small, round. Antenna 1 about \/., as long 

 as body, 1^* Joint rather shorter than 2'^. flagellum shorter than peduncle, 

 accessory flagellum 4-jointed, last Joint minute. Antenna 2, ultimate and penulti- 

 mate joints of peduncle subequal. Gnathopod 1, 6*^ Joint shorter than 5*^^ 

 much longer than broad, palm very oblique. Gnathopod 2, 5*^^ Joint very 

 Short, cup-shaped. 6*^ very large, about twice as long as broad, palm very 

 oblique, longer than bind margin, irregularly dentate, finger long, the acute 

 apex closing behind the little triangulär lobe which defines the palm. Peraeo- 

 pods 3 — 5, 2*1 Joint mucb expanded, in peraeopods 4 and 5 not ^3 longer than 



