100 president's address — SECTION D. 



which has only one genus C Haplochiton) not represented in 

 Victoria. 



The genera of especial interest, from the point of view of 

 their distribution, are the following : — 



Lates (brackish water perch) has one species found only in 

 the Anson River in N.E. Tasmania, the same species 

 existing in Victoria. The genus has representatives in the 

 Nile and Rivers of India and China. 



Aphritis has one species in Tasmania, the same in Victoria, 

 and two others in Patagonia. 



The family Haplochitonidae are confined to temperate 

 South America, Victoria, Tasmania, and New Zealand. One 

 genus — Haplochiton — is found only in Tierra del Fuego, the 

 Falkland Islands, and Tasmania ; the second — Prototroctes 

 (freshwater herring) — only in South Victoria, North Tas- 

 mania and New Zealand. 



Galaxias (Trout) is found only in the Rivers of South 

 America, ranging from Tierra del Fuego as far north as 

 Chili, in the rivers of South Victoria and South New South 

 Wales, and in the rivers of Tasmania. One species 

 ( Galaxios attenuatus ) is common to South Victoria, Tas- 

 mania, New Zealand, the Chatham and Falkland Islands, 

 and Chili. This genus is the most widely spread of any fresh- 

 water fish in Tasmania, from which, including King Island, 

 7 species are described, two fG. occellatus smd delicatulus J 

 being found in the latter and in South Victoria but not in 

 Tasmania itself. 



Aganostoma (mullet) has two species (A. diemensis and 

 lacustris) common to South Victoria and Tasmania. The 

 distribution of this genus is remarkable, its species being only 

 elsewhere found in the fresh waters of the West Indies, 

 Central America, New Zealand, Australia, the Celebes and 

 Comoro Islands. 



Gadopsis (blackfish) is confined to A ustralia and Tasmania, 

 being found in the rivers of New South Wales, Victoria, 

 South Australia and North Tasmania. One species (G. 

 marmoratusj is common to the latter and the mainland. 



In the Cyclostomata or Lampreys two genera with one 

 species each are recorded from Tasmania, viz., Mordacia 

 mordax and Geotria allporti. In South Victoria the 

 former is found together with a species of the genus Geotria 

 CG. australis) which also occur? in South Austr/ilia. This 

 genus also is represented in Chili. 



