608 SCIENTIFIC RECORD FOR 1882. 



and contribute well nigh 40 per cent, of the total, while Australia is 

 exceptionally poor, and has a very small percentage of fresh- water fishes. 

 Even the few fluviatile forms are ill understood, but it is uot at all likely 

 that any have intimate relations with types of the northern hemisphere, 

 although several genera have been associated in a very heterogeneous 

 group (" Grystina"), of which the Black Bass of America has been taken 

 as a type. Another element that must be considered in a comparison 

 of the resj)ective faunas is the number of ill-defined and doubtful species 

 that have been introduced into the southern fauna, and which Mr. Mac- 

 leay has evidentlj^ been unable to examine and refer to their proper 

 categories. But, making all such allowances, the marine fish-faunas of 

 Australia are very rich, and the number of species surpass those of the 

 North American marine regions. It is lamentable that many genera 

 will have to carry, as long as the present rules of nomenclature prevail, 

 names commencing with "Keo," an anachronism that neophytes in 

 science and nomenclature might be expected to be guilty of, but which 

 good naturalists have also shared, so misleading is a bad example. 



The fresh-water types of Australia are more numerous than have been 

 supposed. As recently as 1880, Dr. Giinther only admitted 36 species, 

 including therein two "brackish- water" forms, and only three peculiar 

 generic types — Ceratodvs, Nanno2)erca, and 3Iacquaria. Mr. Macleay 

 greatly increases the list. They are named and arranged by him as 

 follows: 



Fercidoc. — Lates (5 of 8 sp.), Brevlpcrca (1 sp.), Bostoclda (1 sp.), Ede- 

 lia (2 sp.), Acanthoperca (1 sp.), Xamioperca (2 sp.), GuUiveria (2 sp.), 

 OUgorus (2 sp.), Gtenolates (properly PlectropJites, 3 sp.), Murrayia (4 

 sp.), Riverina (1 sp.), fJulis {i. e., Kulilia or Moronojhsifi, 1 sp.), Macquaria 

 (1 sp.), Therapon (10 of IG sp.). 



Trachinidce. — Aphritis (1 sp.). 



Gohiid/v. — Gohius (several sp.), Uleotrls (several sp.), Arist(vvs (4 sp.). 



Blenniidw. — BlenniuH (several sp.), Gristiceps (1 of 10 sp.). 



Atherinidw. — Atherinichthys (2 of 7 sp.), Nematocentris {i. e., Melano- 

 tccnia, 1 sp.), Ncoatherina (1 sp.). 



MngiUdcv. — Mvgil (several sp.), Agonostomu (1 of 2 sp.). 



Ophiocephalkkv. — Ophiocephalv.s (1 s]). ??). 



Gadopsidcu. — Gadopsis (1 sp.). 



Pleiironectidce. — Arnogloasus (I sj).), Bhomhosolea (1 of 2 sp.), Synap- 

 tura (1 sp,). 



Silui'ida\ — riototm.s (3 sp.), Copidoglanis (1 of 4 sp.), Neosihirus (1 sp.), 

 Cainosiltirus (I sp.), Eumeda (1 sp.), Arius (1 of 6 sp.). 



Haplochiionidcv. — Prototroctes (1 sp.). 



iSabnonida'. — Rctropinna (1 sp.). 



GaUixidcv. — Galaxias (17 sp.). 



Cyprinidcv. — Leuciscns (?! 1 sp.). 



Osteoglossidce. — Osteoglossum (1 sp.). 



