NEW FISHES FROM THE UPPER MURRUMBIDGEE. 



By William Macleay, F.L.S., &(j. 



At the last montlily meeting of this Society, ]' exhibited four 

 species of Fishes from the streams forming the! upper waters of 

 the Murrumbidgee. They had been collected ar.d sent to me by 

 Charles Jenkins, Esq., of Yass, a gentleman well kno'v^n to this 

 Society by his Papers on the Palaeontology of that district. One 

 of the four Fishes is a Galaxias taken in the Yass River; I 

 believe it to be a species hitherto undescribed, but in the absence 

 of sufficient evidence of a conclusive kind I shall postpone, for the 

 present, giving it a distinctive name. Another! of the Fishes, a. 

 Gadopsis, taken in the Little River, I shall treat in the same way. 

 One species of Gado^ysis only has been described.! It is found in. 

 rivers in Tasmania, Victoria, and New South \[Vales, but I have^ 

 long thought that those of the genus found in the western rivers- 

 of New South Wales were of much more elongate form than the= 

 original Gadopsis marmoratus of Tasmania. I must defer, how- 

 ever, any attempt to solve my doubts, until I can procure some= 

 specimens of the Fish from Tasmania. The other two Fishes are-- 

 undoubtedly new and are here described. , 



Oligorus gibbiceps. n. sp. i 



Of rather elongate form, and slightly compressed. The line of: 

 the back is straight from the top of the head to the tail. The^ 

 height of the body is one-fifth, and the length of the head is one- 

 fourth of the total length. The head descends almost vertically 

 in front of the eyes to the mouth, which is horizontally protruded,, 

 the lower jaw being the longest. The maxillary extends back- 

 wards to below the middle of the orbit ; the eyes are large, lateral 

 and near the top of the head. The dorsal and anal spines are 



