BY W. MACLEAY, F.L.S. 355 



belly golden yellow, tlie vertical fins are faintly marked or 

 bordered witli black. 



All the rivers of tbe Murray system. 



I bave no doubt that these are all one and the same species, 

 though the variations in the descriptions are sufficient to excite 

 some uncertainty. The genus Ctenolates has been very properly 

 separated by Dr. Gunther, (Proc. Zool. Soc. 1871, p. 320.) from 

 Dules. 



119. Ctenolates Chkistyi, Casteln. 



Bides Christyi, Casteln., Proc. Zool. Soc, Yict., I., p. 57. 

 D. 10/11. A. 3/8. L. lat. 52. L. transv. 8/18. 



Height three times and one -fourth in the total length ; head 

 four times and one-sixth in the same ; orbit four times and a-half 

 in the head, the latter cavernous. Upper profile much elevated, 

 almost gibbous behind the eye. Body highest at the base of the 

 pectorals. The teeth are numerous, but seem to be wanting on 

 the palatine bones. Coracoid much denticulated. Soft dorsal 

 and anal fins scaly for one-third of their height. Colour brownish 

 purple above, and white below. 



One specimen fourteen inches long from the Edwards Eiver, 

 near Deniliquin. 



120. Ctenolates flayescens, Gunth. 



Bides flavescens, Gunth., Ees. Fishes of Victoria, p. 10. 

 D. 10/10. A. 3/9. L. lat. 89. 



Form elongate, height of body three times and two-thirds in 

 the length, and head three times, without the caudal fin. Pree- 

 orbital entire. Praeoperculum finely serrated behind, and bilobed 

 beneath with strong obtuse spines. Operculum covered with 

 scales much larger than those on the cheek, and armed with a 

 long, flat spine. Scales larger below the lateral line than above. 



