2 MEMOIRS OF THE QUEENSLAND MUSEUM. 



Notes: — Boiilenger describes and McCoy figures the scales of this fish as 

 being "cycloid." Of the numbers which I have examined I have never seen one 

 to which this description could be correctly applied ; the strength of the ciliation 

 is, however, extremely variable, and some specimens only show it weakly along the 

 middle of the side, where about half a dozen small teeth are alone present on the 

 middle of the outer edge of the scale, leaving a broad dorsal and abdominal 

 cycloid band. Normally, however, the scales of the estuarine forms show distinct 

 ciliation, except those of the nape and a narrow, gradually contracting band 

 below the base of the spinous dorsal, where they are constantly cycloid. And 

 this variation in the scale-character of those examples which more or less 

 permanently reside in the brackish water of an estuary, leads naturally on to the 

 much coarser ciliation of the scales of those individuals which have taken on a 

 more or less purely fluviatile existence. This character, therefore, is manifestly 

 of no value as a specific factor. With regard to the eraargination of the upper 

 profile of the head, on which Stead lays so much stress, I find that this is wholly 

 caused by the usually more marked convexity of the snout in the estuarine form, 

 which necessarily induces a hollow between the snout and the occipitonuchal 

 convexity. As, however, I have examined several of these fishes in which, 

 through the straightening of the snout-contour, the emargination was practically 

 eliminated, it will be understood that I can not see my way to accepting this 

 character as of specific value, the difference being in my opinion more apparent 

 than real. 



PERCALATES COLONORUM (Giinther). 

 Lates colonorum Giinther, Ann. & Mag. Nat. Hist. (3) xi, 1863, p. 114; Castelnau, Proc. 



Zool. & Accl. Soc. Vic, i, 1872, p. 43; McCoy, Prodr. Zool. Vic, dec ii, 1878, pi. xiv; 



Macleay, Proc Linn. Soc. N. S. Wales, v, 1881, p. 304; Tenison-Woods, Fish & Fisher. 



N. S. Wales, 1882, p. 31, pi. i; Johnston, Proc. Eoy. Soc Tas., 1882, p. 59; O'Connor, 



Proc Roy. Soc. Queensl., xii, 1897, p. 110; Zietz, Trans. Roy. Soc S. Austr., xxvi, 1902, 



p. 265. 

 Dules noveviaculeatus Steindachner, Sitz. Akad. Wien, liii, 1886, i, p. 428, pi. i, fig. 2; id., 



ibid., Ix, 1869, i, p. 674 ; KluBzinger, Arch, f . Nat., xxxviii, 1872, i, p. 20. 



Bides reinliardtii Steindachner, ibid., Ivi, 1867, i, p. 320.^ 



Lates similis Castelnau, ibid., p. 44; Macleay, ibid., p. 305. 



Ijtttes a7itarcticv,s Castelnau, ibid. ; Macleay, ibid. 



Lates victorice Castelnau, ibid., p. 45; Macleay, ibid. 



Lates eurtus Castelnau, Res. Fish. Austr., 1875, p. 5; Macleay, ibid., p. 306. 



Lates ramsayi Macleay, ibid. 



Fercalates colonorum Ogilby, Edib. Fish. N. S. Wales, 1893, p. 2, pi. i; Boulenger, Catal. 

 Percif . Fish., 1895, p. 132 ; Stead, Fish. Austr., 1906, p. 96 ; id., Edib. Fish. N. S. Wales, 

 1908, p. 53, pi. xxii, low. fig.; id., Proc Linn. Soc. N. S. Wales, xxxv, 1910, j). 659; 

 Roughley, Fish. Austr., 1916, p. 60. 



Tercalates fluviatilis Stead, Proc. Linn. Soc. N. S. Wales, xxxi, 1906, p. 261; id., Edib. Fish. 

 N. S. Wales, 1908, p. 54, pi. xxii, upp. fig.; McCulloch, Proc. Linn. Soc. N. S. Wales, 

 xxxv, 1910, p. 432; Stead, Proc Linn. Soc N. S. Wales, xxxv, 1910, p. 658. 



^ Boulenger, I believe erroneously, quotes this form as Dules reinwardti; I follow 

 Giinther (Zool. Rec, iv, 1867, p. 159). McCulloch, in answer tO; a query, kindly writes — 

 ^'According to my slip, copied from the original reference, the name is Dules Eeinhardti." 



