Thomson. — Ou I<!eiv Zealand Orchestidae. 199 



1880. Orchestia macleayana. 



1880. Haswell. Proc. Linn. Soc. N. S. Wales, vol. 4, 



p. 250, pi. 7, fig. 2. 

 1882. Haswell, Cat. Aust. Crust., p. 220. 



1880. Talorchestia diemenensis. 



1880. Haswell, I.e., vol. 4, p. 248, pi. 7, fig. 6. 

 1882. Haswell, i.e., p. 215. 



1881. Orchestia chilensis (not M.-Edw.). 



1881. G. M. Thomson, Trans. N.Z. Inst., vol. 13, 



p. 209. 

 1886. Thomson and Chilton, Trans. N.Z. Inst., 

 vol. 18, p. 145. 



1884. Allorchcstes receus. 



1884. G. M. Thomson, Trans. N.Z. Inst., vol. 16, 



p. 235, pi. 13, figs. 2-5. 

 1886. Thomson and Chilton, Trans. N.Z. Inst., 



vol. 18, p. 145. 



1888. Orchestia selkirkii. 



1888. Stebbing, Eep. Chall. x\mph., p. 608, pi. 1 

 and 2. 



Body narrow, rarely dilated, reaching to 20 mm. in length. 

 Limbs with few spines. Second antennas projecting straight 

 forward from the head, peduncle and flagellum subequal. 

 Coxal plates of 2nd gnathopoda and 1st pereiopoda produced 

 on the posterior margin into an acute apophysis. In the 

 males the 1st gnathopoda have rugose processes on the in- 

 ferior side of the meros, carpos, and propodos ; the 2nd gnatho- 

 poda have the bases greatly dilated, and the propodos very 

 broadly oval, with a very oblique palm. The 5th pereiopoda 

 in old males have the meros and carpos much dilated. Pleo- 

 poda normal. 



Hab. — Usually found under wet stones, sea- weed, &c., 

 between tide-marks, occasionally swimming in rock-pools. 

 Does not appear to burrow in sand. 



Locality. — Common round the coasts. 



2. Orchestia chiliensis, Edwards. 



1840. Orchestia chiliensis. 



1840. M. -Edwards, Hist. Nat. Crust., vol. 3, p. 18. 

 1852. Dana, U.S. Exped., p. 867, pi. 58, fig. 4. 

 1862. Sp. Bate, Cat. Brit. Mus. Amph., p. 30, pi. la, 



fig. 8, and pi. 5, fig. 2. 

 1876. Miers, Cat. N.Z. Crust., p. 123. 

 1893. Delia Valle, Gamm. d. G. d. NapoH, p. 498, 

 pi. 2, fig. 8, and pi. 15, figs. 31-38. 



