Orchestia 537 



ramus shorter than peduncle. Telsoa spinulose, with slightly uotched apex. 

 The whole of the integument veiy hard. Colour, marbled red and white. 

 L. 16 mm. 



Tasmania. 



11. O. capensis Dana 1853 & 55 0. c, J. 1). Dana in: U. S. expl. Exp., v.l3n 

 p. 866; t. 58 f. 3a, b | 1862 O.e., Bäte, Cat. Amphip. Brit. Mus., p. 23 t. 4 f. 2 | 1893 

 0. c, A. Della Yalle in: F. Fl. Neapel, u 20 p. 506 t. 57 f. 69. 



Q unknown. — ö. Side-plates 2 — 6 very large, 5*^ nearly as deep 

 as -4*^. Eyes subrotund. Anteuna 1 reaching end of penultimate joiut of 

 peduncle of antenna 2, flagellum 7 — 10-jointed. Antenua 2 rather more 

 than half as long as body, ultimate Joint of peduncle twice as long as 

 penultimate or more, flagellum rather longer than peduncle. 14 — 16-jointed, 

 setules miuute. Gnathopod 1, 5*^ Joint without apical process (Bäte), 6*^narrow. 

 scarcely widened at apex, which is excavato-ti'uncate, finger hardly longer 

 than apex (Dana) (Bäte: longer than apex). Gnathopod 2, 6^^ Joint large, 

 robust, widening to the palm, which is deeply, almost semicircularly excavate 

 between a small tooth adjoining finger-hinge and the acute defining tooth. 

 Peraeopods 1—5 all robust, with groups of spines rather crowded, 2*^ Joint 

 in peraeopods 3 — 5 broadly expanded; peraeopods 4 and 5 longer than the 

 rest, but not elongate. L. 16 — 18 mm. 



Cape of Good Hope. 



12. O. chiliensis M.-E. 1840 O.e., H. Milne Edwards, Hist. nat. Crust., v.S 

 p. 18 1 1888 O.e., T. Stebbing in: Hep. Voy. Challenger, v.29 p. 185 | 1898 O.e., G. 

 31. Thomson in: Tr. N. Zealand Inst., v.Slp. 199 [ 1849 0. ehilensis, Nicolet in: Gay, 

 Hist. Chile, v. 3 p. 233 ! 1853 & 55 0. e.?, J. D. Dana in: U. S. expl. Exp., v. 13ii p.867; 

 t. 58 f. 4 I 1862 0. c, Bäte, Cat. Amphip. Brit. Mus., p. 30 t. la f. 8 1 1893 0. c. (part.), 

 A. Della Yalle in: F. Fl. Neapel, u20 p. 498. 



In general like 0. mediten-anea (p. 531). Antenna 1, 2^ and 3^ joints 

 of peduncle each longer than 1^*, flagellum shorter than peduncle, 6- or 

 7-jointed. Antenna 2, ultimate and penultimate joints of peduncle very stout, 

 and the latter little shorter than the former; flagellum shorter than peduncle, 

 17-jointed. Gnathopod 2 in d, 6*^ Joint very large, the palm having a 

 large obtuse tooth near finger-hinge, and thence running rather sinuously 

 and obliquely but not extremely so to meet the bind margin which is longer 

 and better defined than in 0. mediterranea; finger long, rather sinuous. 

 Peraeopod 5, 2'^ Joint teuding to quadrate at lower bind corner, 4^^ and 

 5*^ joints stout, but little more so than in peraeopod 4, both much longer 

 than broad. üropods 1 and 2, rami shorter than peduncle. Uropod 3, ramus 

 much shorter than peduncle. L. 16 — 18 mm. 



Pacific (Chili; Xew Zealand). Under stones and in little pools between tide-marks. 



13. O. dentata Filh. 1885 0. d., Filhol in: Recu. Passage Venus, v.3n Zool. 

 p.462 t. 53 f. 1 I 1898 O.telluris?, G.M.Thomson in: Tr. K Zealand Inst., v.31 p. 200. 



Antenna 1 reaching end of penultimate Joint of peduncle of antenna 2. 

 Antenna 2 rather more than half as long as body, penultimate Joint of 

 peduncle inflated in the middle, flagellum less than half as long as peduncle. 

 Gnathopod 1, 5*^ Joint distally widened, the lateral faces compressed, 6*^ Joint 

 more reduced than 5*^. Gnathopod 2, 6**^ Joint robust, almost globular, 

 palm with a tolerably strong tooth at centre and a small one near the point 



