DULES CHEISTTI. 

 D. 10—11 ? 0. 17. A. f. 



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

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

 length of the head, the latter very cavernous. The superior 

 profile is very much elevated, almost gibbous behind the eye. 

 The highest part of the body is at the base of the pectorals. 

 The prseopereuluni is straight, finely and equally denticulated 

 behind, with its angle rounded and slightly protuberant ; the 

 denticulations become gradually rather stronger in this part, and 

 on the inferior edge they are still stronger, and present one or 

 two interruptions. The operculum terminates with two flat, 

 broad, serrated appendices, placed somewhat obliquely ; the 

 caracoid presents a long series of denticulations. The teeth are 

 very numerous, villiform ; the vomer bears some teeth, but none 

 are visible on the palatines ; the lateral line follows the profile of 

 the back ; it runs over fifty-two series of scales ; the transverse 

 line numbers eight above it, and eighteen below. These scales 

 are rather large, and ciliated on their edge. The dorsal is 

 formed often spines, the fourth being the longest, and the first only 

 about one-half of the second. I cannot ascertain with certainty 

 the number of the soft rays, my specimen being deficient in this 

 part. The caudal is rounded ; the anal has three spines, of 

 which the second is the longest. On the soft part of the dorsal, 

 on the anal, and on the caudal, numerous scales are seen on the 

 membranes, up to about one-third of their length. The spine of 

 the ventrals is strong ; the pectorals have about two-thirds the 

 length of the head. 



The upper parts of the body, are of a brownish purple, and the 

 lower white. The only specimen I have seen was kindly sent to me 

 by Mr. Thomas Christy, from the Edwards Biver, near Deniliquin. 

 It measured 14 inches long ; when I received it, it had been some 

 time preserved in salt, and I could not form a very good idea of 

 its original colours. It is so much like Murrayia Cyprino'ides in 

 form that I should have thought it belonged to the same species, 

 had it not been for the difference in the number of the spines of 

 its first dorsal. 



