30 AUSTBALtAN ATHBBI1«12>^ 



Rivers there are 7 rows, and in six from Narrandera three 



have 10 rows, two have S^ and one has 7. The scales extend 



on to the base of the caudal. 



Origin of first dorsal slightly in advance of the middi& 



of the length to the hypural, and a little behind the vertical 

 of the ventrals ; second and third spines longest. Anterior 

 rays of second dorsal longest, the fin originating a little 

 farther back than the anal, to which it is similar in form. 

 Ventrals usually reaching to the vent, sometimes shorter. 

 Upper pectoral rays longest, reaching to the vertical of 

 either the ventrals or the first dorsal. 



Colour. — Whitish in formalin wkh a dark (silver) 

 band extending it()m'ab(5ve the base of the pectoral to the 

 hypural which may be continued, more or less indefinitely, 

 on to the upper portion of the operculum and side of the 

 snout. Upper portion of head and back with more or less 

 numerous minute black specks which, when present, are 

 arranged near the margins of the scales above the lateral 

 band. Lower parts of the body with a few scattered specks, 

 and a median row on the under surface of the caudal 

 peduncle. 



Described from six specimens, 35-61 mm. long, from 

 North Yanko Creek, Narrandera, X. S. Wales, and twenty 

 from a lagoon at the junction of the Namoi and Barwon 

 Rivers, N. S. Wales. The specimen sele<;ted as the ty^e 

 is 61 mm. long, from the former locality. They were 

 collected by Mr. David G. Stead, who presented them 

 to the Australian Museum. Other specimens are in the 

 Museum collection from the Mclntyre River, on the 

 boundary between N. S. Wales and Queensland. 



This species is very probably identical with Atheriim 

 iiiterioris, Zietz,* from the overflow of Coward and Strang- 

 ways Springs, Central Australia, which though named, 

 has not been described. Through the kindness of Professor 

 E. C. Stirling, Director of the South Australian Museum, 

 I have been able to examine one of Mr. Zietz's original 

 specimens, but its condition is too bad to enable me to say 

 whether it is identical with those described above or not. 



The following notes on the distribution and habits 

 of C. puviatilis have been supplied by Mr. Stead. " The 



•Zietz, Trans. Roy. Soc. S. A.ustr., xxxiii., 1909, p. 2M. 



