644 



SUBANTARCTIC ISLANDS OF NEW ZEALAND. 



[Crustaxxa. 



Hyale campbellica (Filhol). 



Allorchestes campbellica, Filhol, " Mission de I'lle Campbell," p. 466, 1885. 

 Hyale campbellica, Stebbing, " Das Tierreich Amphipoda," p. .562, 1906. 



Described by Filhol from specimens collected on the shores of Perseverance 

 Harbour, but his description is insufhcient for identification. 



Genus Chiltonia, Stebbing, 1899. 



Distribution. — New Zealand and adjacent islands, Australia, and Tasmania. 

 Hyalella, a closely allied genus, is common in South America. 



Chiltonia mihiwaka (Chilton). 



Hyalella mihiwaha, Chilton, Ann. & Mag. Nat. Hist., ser. 7, i, p. 423, pi. xviii, 

 1^ 1898. Chiltonia mihiwaka, Stebbing, " Das Tierreich Amphipoda," 



p. 555, 1906 ; Chilton, Trans. N.Z. Inst., xh, p. 57, 1909. 



A few specimens of this species, both male and female, were collected by Pro- 

 fessor Benham in a fresh-water pool not far from the sea on Enderby Island, and 



Fig. 11. — Ghilionia mihiwaka (Chilton^ 



11a. First gnathopod of male of Auckland Island specimen. 

 116. Second gnatliopod of male of Auckland Island specimen. 



others were taken at the exit of a fresh-water pool on Auckland Island ; two small 

 female specimens were found by Mr. Laing in a fresh-water stream on Campbell 

 Island. 



These specimens all evidently belong to the one species, and are almost identical 

 with specimens from the South Island of New Zealand, differing only in having the 

 palm of both gnathopods (figs. 11a, 116) slightly more oblique than in the New Zea- 

 land specimens. 



Two species of Chiltonia have been described from fresh-water streams in 

 Victoria by Mr. 0. A. Sayce ; one of these, C. subtenuis, is apparently closely re- 

 lated to C. mihiivaka, but differs in having shorter antennae and a more slender body. 



More recently Mr. Geoffrey Smith has found species of Chiltonia abundant in 

 the fresh- water streams and lakes of Tasmania.* 



* " Naturalist in Tasmania," Oxford, 1909, p. 136 ; and Proc, Koy. Soc. (B), Ixxx, p. 472, 1908, 



