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INTRODUCTION. 
'There is an attractive tendency towards increased subdivision 
in tbe matter of classification,-tbe ultimate consequence of which 
would be for each species to become the type of a genus, and 
each genus of a family. Mr. Gr. A. Boulenger has recently raised 
the status of the family in Teleostomi, by making it more in¬ 
clusive, and in the present catalogue I willingly adopt his 
classification.* The new arrangement of the genera has not yet 
been published, and the number here included is doubtless 
greater than will be ultimately admitted. Notwithstanding the 
fact that all the genera to which our species have been assigned 
are not included, the average number of species in a genus is still 
under two. 
Of ‘ omitted genera I may instance the following :— Gyro- 
pleurodus , JEuristhmus , Scolecenchelys, Incisidens, Sillaginodes , 
Parhaplodactylus, Paristiopterus , Microcanthus, Pictilabrus , and 
Thysanophrys. 
The only catalogue previously published, which dealt ex¬ 
clusively and wholly with the Fishes of New South Wales, was 
issued eighteen years ago.f Though on the one hand many 
species since described are now included ; on the other a number 
rare removed from the list pending more satisfactory evidence of 
their occurrence within the boundaries of the State. 
A mere list of Fishes would not have fulfilled the objects of 
the Memoir, while the space limit placed upon the publication 
* Zoological Record, 1902. 
t Catalogue of the Fishes of New South Wales, with their principal synonyms, by 
J. Douglas Ogilby, Sydney, 1886. ' 
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