740 ox SOME AUSTRALIAN ELEOTRIN.E, 



l)ury themsehes beneath tlie mud ; I am, however, iDcliiied to 

 l)elieve that the latter is tlie true solution of their disappearance; 

 tliat their al>stinence, whether enforced or voluntary, has no ill 

 efl'ects on them is jjroved hy the perfect condition in which they 

 are when they reappear with the first warm weather. 



Krefft's StrijDed Gudgeon is abundant in all the fresh waters in 

 the neighbourhood of Sydney, and extends its range northwards 

 at least as far as the Clarence River, from whence specimens were 

 obtained by its original describer; it appears to prefer muddy 

 waterholes and sluggish creeks to clearer and swifter waters, and 

 is, therefore, more distinctly a denizen of the lower lands in the 

 vicinity of the coast than is the next species. 



My examples wex'e taken from waterholes near Liverpool, in 

 which I found them abundant, as also they are in the George's 

 Ki\ er above the weir. I have also examined specimens from the 

 neighbourhood of Port Stephens, from Rope's Creek, from Cook's 

 River, and from Nowra, as well as Krefft's tj^j^es from Bronte 

 and the Botany Swamps. 



The largest of these examples measured 13.5 millimeters, and 

 the description is drawn up from an examination of thirty-five 

 specimens ranging from that size down to 63 millimeters. 



MuLGOA, gen.nov. 

 Kleotris, sp. auctt. 



Body elongate-olilong, strong!}' compressed posteriori}', the 

 back broad and almost flat in front of the dorsal fins, rounded 

 behind; head moderate, about as deep as wide, the snout slightly 

 depressed; mouth small and obli(|ue, the lips fleshy; premaxillaries 

 slightly protractile; niaxillaries narrow, but little arched, with 

 the distal extremity exposed; lower jaw the longer. Jaws with 

 a l)and of small curved teeth, the outer series slightly enlarged 

 and fixed; lower pharyngeals forming together a subtriangular 

 patch, armed with small, acute, fixed teeth, the anterior and 

 symphyseal series enlarged; nostrils widely separated, the anterior 

 valvular ; eyes supero-lateral ; none of the bones of the head 

 armed; gill-openings extending forwards to below the angle of the 



