614 SUB ANTARCTIC ISLANDS OF NEW ZEALAND. [Crustacea. 



Suborder NATANTIA. 

 Genus Nauticaris, Spence Bate, 1888. 

 Distribution. — Widely distributed in southern seas. 



Nauticaris marionis, Spence Bate. 



Nauticaris marionis, Spence Bate, Rep. " Challenger " Macrura, p. 603, 

 pi, cviii, 1888. Hippolyte stewarti, G. M. Thomson, Trans. N.Z. Inst., 

 xxi, p. 259, pi. xiii, fig. 1, 1888. Merhippolyte australis, Hodgson, 

 " Southern Cross " Crust., p. 223, pi. xxix, 1902. Nauticaris stewarti, 

 G. M. Thomson, Trans. Linn. Soc, ZooL, viii, p. 445, pi. xxix, fig. 1, 

 1903. N. marionis, Caiman, Ann. & Mag. Nat. Hist., ser. 7, xvii, 

 p. 31, 1906. 



Two specimens agreeing closely with Mr. Thomson's description of Nauticaris 

 stewarti were dredged during the expedition in Perseverance Harbour, Campbell 

 Island. These I have compared with Mr. Hodgson's description of the " Southern 

 Cross " specimens {Merhifpolyte australis, Hodgson), which were obtained at Auck- 

 land Island in 10 fathoms, and can find no reason for continuing to keep the two 

 species separate ; and as Dr. Caiman, after a comparison of the type specimens, says 

 that Mr. Hodgson's species is the same as N. marionis, Spence Bate, it follows that 

 Mr. Thomson's species is also a synonym of this species. Mr. Thomson had himself 

 pointed out that the species were very closely allied, if not identical. Besides the 

 two specimens mentioned above, I have other specimens from Campbell Island, 

 collected by Dr. Cockayne in July, 1903 ; and also specimens from the Bounty 

 Islands, dredged by Captain Bollons, in 50 fathoms, in October, 1906. Mr. 

 Thomson's type specimen was dredged in Paterson Inlet, Stewart Island, in 10 

 fathoms. 



The species is found also at Marion, Prince Edward, and Falkland Islands, and 

 is therefore circumpolar in distribution. 



According to Dr. Caiman, who examined two of the type specimens, Hifpolyte 

 magellanicus, A. Milne-Edwards (" Mission du Cap Horn," Crust., p. F 46) should 

 also be placed under Nauticaris, but differs from N. marionis in possessing exopods 

 on the third maxillipede. 



Genus Palaemon, Fabricius, 1798. 

 Distribution. — Cosmopolitan. 



Palaemon affinis (H. Milne-Edwards). 



Leander affinis, H. M.-Edwards, Hist. Nat. des Crust., t. ii, p. 391, 1837 ; ■ 

 Dana, U.S. Expl. Exped., xiii, pi. xxxviii, fig. 5, 1852 ; Miers, Cat. 

 N.Z. Crust., p. 85, 1876. Palaemon affinis, G. M. Thomson, Trans. 

 Linn. Soc, Zool., viii, p. 450, 1903. 



Recorded from Campbell Island by Filhol. It is found also in New Zealand, 

 and is a widespread species, being found at the Cape of Good Hope, Australia, Tas- 

 mania, and the Falkland Islands. 



