Art. I V. — A Neiv Species of Fresh-iuafer Fish from Lake 

 Nigothoruk, Mount Wellington, Victoria. 



By A. H. S. Lucas, M.A., B.Sc. 



[Eead June 11, 1891.J 



Galaxias nigothoruk, sp. n. 

 D. ]a A. 11-13. P. 16. V. 7. 



Height of body in front of dorsal tin contained between 

 seven and eight times in the length exclusive of the caudal 

 fin. Length of head contained rather more than four times 

 in the same. 



Head broad ; trunk gradually narrowing to root of caudal ; 

 width between eyes equal to maximum height of head ; jaws 

 about equal ; maxillse reaching to beneath anteiior third of 

 eye ; diameter of eye rather less than one-fourth length of 

 head, quite equal to length of snout. 



Dorsal commences at last third of trunk ; anal a little behind 

 dorsal ; pectorals reach rather more than lialf way to roots 

 of veiitrals ; ventrals extend over nearly two-thirds of 

 distance between their roots and the vent. Minimum 

 height of tail about two-thirds height of trunk between 

 dorsal and ventral fins. 



Coloration. — Ground hue of skin dark-green on back of 

 trunk ; lighter green on sides ; on belly, silvery blueish- 

 green ; Ground hue of head olive-green dorsally, blueish- 

 green ventrally, operculum purplish. Whole skin covered 

 with innumerable tiny brown to black pigment dots. These, 

 when crowded close together, form dark spots, which give 

 the trunk a richly sj)eckled appearance. On the fins, the 

 dots are arranged along the rays. Fins reddish-yellow. 

 Iris a beautiful bronze-yellow. 



