171 



HAPLOCHrTONID^. 



" Body naked or scaly. Margin of the upper 

 jaw formed by the intermaxillary ; opereuker ap- 

 paratus complete. Barbels, none. Gill opening 

 wide; pseudobranchise well developed. Air-bladder 

 simple. Adipose fin present. Ovaries laminated ; 

 the eggs fall into the cavity of the abdomen, 

 there being no oviduct. Pyloric appendages, none. 



" Eresh water fish, from the temperate parts of 

 South America and South Australia, representing 

 the Salmonoids of the Northern Hemisphere." 



PROTOTEOCTES. 



Formed by Dr. Gunther on a very remarkable fish found in 

 several rivers of Victoria and of North Tasmania. 



PBOTOTKOCTES MARINA. 



Prototroctes marsena, Gunther, Oatal., vol. v., p. 382. 

 (Yarra Herring.) 

 Having not yet seen this sort living, or in a fresh state, I only 

 mention it here ; it exhales a very strong and particular smell. 

 It used to be very common in the Tarra, but since the introduc- 

 tion into that river of the Murray Cod, it seems to have been 

 almost destroyed by it. No specimens, are to my knowledge, now 

 found near Melbourne, and it has become very scarce even in 

 the upper parts of the river. 



scopelid,e. 



" Body naked or scaly. Margin of the upper jaw 

 formed by the intermaxillary only; opercular ap- 

 paratus sometimes incompletely developed. Barbels 

 none. Gill-opening very wide ; pseudobranchise 



