,150 ^IH. G. M. THOMSO.V OX THE NEW ZEALAND 



Didrihiilion. This species occurs both in the Atlantic aud Pacific Oceans, aud from 

 Japan in the nortli to New Zealand in the souih, at deptlis varying from 200 to 2(J7') 

 fathoms. 



2. ACAXTHEPHYRA liRACHYTKLSONIS, Bate. 

 1888. Bate, 'Challenger' Macrura, p. 753, pi. 126. fig. 7". 



Sabilnt. Off the Kermadec Islands at depths varying from 200 to 030 fathoms. 

 Distribution. Seas of Japan, Philippines, Bauda, and the Falkland Islands at depths of 

 200-2010 fathoms. 



Genus 2. Pal^mox, Eabricius, 1798. 



1. Pal.emon AFFiNis, M.-Edvvards. 



1837. Pahemon affiiiis, M.-Edvv. Hist. Nat. Crust, ii. p. 391. 



1852. Palamon offinis, Daua, U.S. Explor. Exjied., Crust, p. 581, pi. 38. tig. 5. 



1888. Pahemon tiffinis, Bate, ' Challenger' Macrura, p. 782, pi. 128. tig. 5. 



1837. Pahemon Quoiunns, M.-Edw. Hist. Nat. Crust, ii. p. 393. 



1843. Palienion Qmianm, White, Dieffenb. A^oy. N. Z. ii. p. 208. 



1876. Leander affinis, Miers, Cat. N.Z. Crust, p. 85. 



Bate states (7. c. p. 782) that this species is only distinguished from P. squilla, Fabr., 

 of Europe, l)y having- the apex of the rostrum bifid, and four teeth instead of three 

 on the ixnder margin. But, as Miers points out, " the number of teeth varies in a 

 large series of specimens, while the bifid appearance is caused by the greater or less 

 approximation of the anterior tooth of the upper series to the apex of the rostrum — also 

 a variable character." And on this ground he iinites P. Qiioiaiiiis, M.-Edw., with 

 P. ajfinis, an opinion I quite agree with. I have never, howcner, found a specimen 

 with only six teeth on the upper margin of the rostrum, and I liave examined an 

 immense number from various parts of the Colony. The numljer varies from seven on 

 the upper and three on the lower to nine and six respectively. 



This is the commonest Shrimp in New Zealand, and is the only one I liave seen 

 offei-ed for sale in the fish-shops in l^unedin, Christcluirch, and Wellington. 



Habitat. Stewart Island, dredged, 10 fathoms; east coast of Otago in rock-pools, &c., 

 commonly between tide-marks ; Akaroa, Lyttelton, Wellington, Bay of Islands, and 

 Chatham Islands. Eilhol (Miss, de I'lle Campbell, p. 131) records it from Campbell Island. 



Distribution. A widespread southern species, found at the Cape of Good Hope, coasts 

 of Australia, Tasmania, and in the Falkland Islands. 



2. Palj:jion xatatok, ]M. -Edwards. 



1837. PdUeiiwn iiatator, Al.-Eihv. Hist. Nat. Crnst. ii. p. 393. 



1888. Pahemon ualalor, Bate, 'Challenger' A[acruva,-i>. 78 t, pi. 12S. figs. 6 & 7. 



1819. Leander eiratira, Desmarest, Aiin. Soe. Entom. France, ser. 2, vii. p. 87. 



1800. Leander natator, Stinipson, Proc. Acad. Nat. Se. Philad. p. 109. 



1876. Leander natator, Miers, Cat. N.Z. Crust, p. 8(5. 



Tliis species is included by Miers among the New Zealand Crust;ic(!:i on the authority 



