528 Örchestoidea 



small, not reaching eud of peuultimate Joint of antenna 2; joints of peduncle 

 successively shorter, flagellum 5 — 7-jointed. Antenna 2 in d longer than 

 half the body, powerful, penultimate Joint of peduncle long and stout, 

 iiltimate still louger, variable; flagellum sliorter than peduncle, mauy-joiuted. 

 Antenna 2 in 9 much smaller than in d, flagellum subequal to peduncle, 

 12 — 19-joiuted. Gnathopod 1 in d, 5*'' Joint much longer than 6**^, naiTOw- 

 ing a little to distal end, 6*^ linear, subcylindrical, without palm, finger 

 small. Gnathopod 2 in d, 5*^ Joint very small, masked behind by 4*^, 

 6*^' massive, palm spinulose, rather oblique, nearly straigbt, with an excavation 

 near the middle, coiTesponding with a slight projection in the margin of 

 the long curved finger. Gnathopod 1 in 9 , 5*^ Joint nan-owly oval, 6^^ narrowing 

 to the palm-less apex, finger small. Gnathopod 2 in 9 feeble, 6*^ Joint 

 elliptical, the chela-forming finger longitudinal, nearly reaching apex of 

 6*^ Joint. Peraeopod 1 decidedly longer than peraeopod 2, the latter with 

 notched finger. Peraeopod 3 short, peraeopod 5 a little shorter than 

 peraeopod 4, moderately stout. üropods 1 — 3 very spinöse; uropod 1, both 

 rami armed with spines. Colour yellowish white, peduncle of antenna 2 

 orange. L; 18 — 20 mm. 



South-Pacific (near Valparaiso). Burrowingin the sand; ^ uuder sea-weed thrown 

 up by the tides. 



2. O. fischerii (M.-E.) ?1828 Orchestia f., H. Milne Edwards in: Mem. Soc. 

 Hist. nat. Paris, r. 5 t. 25 f. U | 18B0 0. f., H. Milne Edwards in: Ann. Sei. nat, 

 t;.20 p. 361, 362 I 1840 0. f., H. Milne Edwards, Hist. nat. Crust., v.S p. 19 t. 29 f . 4 j 

 1893 O.f., A. DellaValle in: F. Fl. Neapel, r.20 p. 497 t. 57 f. 56 1 18(y2 Örchestoidea f., 

 ßate, Cat. Amphip. Brit. Mus., p. 11 t. 2 f. 1. 



Body stout, pleon segments 2 and 3 each with 3 large vertical dorsal 

 teeth, placed near together, one on each side of the median line, the 3*^ being 

 by implication central, segments 4 and 5 scabrous above. Eyes large, round. 

 Antenna 1 very short, stout, tapering. Antenna 2 nearly as long as peraeon. 

 Maxillipeds, 1^* and 2*^ joints of palp expanded. Gnathopod 1 in d small, 

 not cheliferous, and ending in a small very naiTow band. Gnathopod 2 

 in d, 6*^^ Joint powerful, with long oblique palm, having near the centre 

 a prominent process, finger very large. Peraeopods 1 — 3 small. Peraeopod 4 

 very large, 2^ Joint gi'eatly developed, raised behind above its point of 

 attachment and overlapping much of peraeopod 5 and the pleon, the other 

 joints long but of the ordinary form. Peraeopod 5 much shorter, 2^ Joint as 

 broad as long. (According to Bäte the eyes are small, ultimate Joint of 

 peduncle of antenna 2 thrice as long as the short penultimate, pleon 

 segments 1 — 3 each with 2 dorsal teeth, but he does not say that he has 

 examined a specimen.) L. about 13 mm. 



Morea, bay of Calamati (Petalidi [Greece]). 



3. O. californiana (F. Brandt) 1851 Megalor ehestes californianus (nom. nud.), 

 Megalorchestia californiana, F.Brandt in: Bull, phys.-math. Ac. St.-Petersb., v.9 p. 142, 

 311 t. 1 1898 Örchestoidea californiana, Calman in: Ann. N. York Ac, ?;. 11 p. 265 

 t. 31 f . 1 I 1853 & 55 Orchestia (Talitrus?) scabripes, J. D. Dana in: U. S. expl. Exp., 

 V. 13 II p. 860; t. 57 f . 4 | 1857 Megalorchestia s. -\- M. californiana, Stimpson in: Boston 

 J. nat. Hist., v. 6 p. 516 j 1862 (hchestoidea s. -|- 0. c, Bäte, Cat. Amphip. Brit. Mus., 

 p. 11 1. 1 f. 3; p. 14 I 1877 Megalorchestia franciscana, Lockington in: P. Calif. Ac, v.l 

 p.47 1 1893 Orchestia gammareUns (part), A.Della Valle in: F. Fi. Neapel, u 20 p. 500, 508. 



Not improbably the d of 0. pugettensis. Body smooth. Side-plates 

 rather large, b^^ hardly shorter than 4*^ (Dana> in Brandt's figure 



