Art. XVII. — Description of some New Victorian Fresh- 

 water Amphipoda. 



By O. a. SAYCE. 

 (With Plates XXXV.-XL.). 

 [Eead 13th December, 1900.] 



Very little is known of the fresh-water and terrestrial 

 Amphipoda of Australasia. The only fresh-water species hither- 

 to recorded from any part of the continent is one from Victoria, 

 Niphargus pulchellus, described by me in the last volume of this 

 journal. From Tasmania, with which the southern Victorian 

 fauna and flora are closely related, two species, Niphargus 

 montanus and N. mortoni, have been described by Mr. G. M. 

 Thomson.^ 



Concerning the terrestrial Amphipoda, Professor Haswell 

 originally formed two species, Talitrus sylvaticus, from New 

 Soutli Wales, and T. assimilis, from Tasmania ; however, subse- 

 quently (1885) he made the latter a synonym of the former, but 

 wrongly referred to it as T. aiEnis." The mistake of quoting 

 alBnis for assimilis was previously made in his Australian Crus- 

 tacea Catalogue, and also later by G. M. Thomson in his paper 

 on Tasmanian Crustacea,^ where the Sydney and Tasmanian 

 forms are compared and assigned to the original species, T. 

 sylvaticus. This species also exists in great numbers in damp 

 forest country throughout Southern and North-Eastern Victoria, 



The New Zealand fresh-water and land Amphipoda, so far 

 described, are as follows — fi'om surface waters Hyalella mihiwaka, 

 Chilton, Pherusa caerulea, G.M.T., Calliopius fluviatilis, G.M.T.; 

 from subterranean waters, Calliopius subterraneus, Chilton, 

 Crangonyx compactus, Chilton, and Gammarus fragilis, Chilton; 

 and of terrestrial habit, Orchestia sylvicola, Dana. 



1 Proc. Royal Society Tasmania, 1892. 



2 Proc. Linnean Soc. N.S.W., vol. x., pt. i. 



3 Loc. cit., p. 15. 



