BY J. DOUGLAS OGILBY. 19 



small numbers. Stomach simple, its entire length interiorly 

 with coarse longitudinal ridges. Intestines folded. Posterior 

 processes of preraaxillaries extending to the frontal bone ; 

 frontal bone with a pair of conspicuous ridges, which are ap- 

 proximate mesially but divergent in front and behind and are 

 separated from the tympanic ridges by a wide interspace ; no 

 preoccipital groove ; coronal ridges vestigial, slightly convergent 

 forwards ; no supraoccipital nor nuchal crest ior the support of 

 the anterior dorsal spine, which is deeply grooved in front ; 

 suborbital stay with several smooth, branched carinae Vertebras 

 10+17 = 27. {vwTov, back; eaOrjs, clothing: in allusion to 

 the complete lepidosis of the dorsal region). 



Rivers and estuaries of Eastern Australia. Monotypic. 



The genus Notesthes outwardly resembles Neosebastes, but 

 the latter differs from it in having the entire head covered with 

 scales, in the absence of an elongate defensive preorbital spine, 

 in the reduced number of dorsal spines, in the large twenty-two- 

 rayed pectoral^ etc. It is, however, probable that while Notesthes 

 has distinct sebastine affinities those of the Neosehastes incline to 

 the scorpjenine. 



Notesthes kobusta. 



Centropogon robustus, Giinther, Catal. Fish., ii, p. 128, 1860, 

 Australian Seas ; Krefft, Proc. Zool, Soc, 1864, p. 182 ; 

 Giinther, Ann. & Mag. Nat. Hist., (3) xx. 1867, p. 60 

 and Zool. Challenger, i. Shore Fishes p. 33, 1880 ; Mac- 

 leay, Proc. Linn. Soc. N. S. Wales, v. 1881, p. 436 and 

 viii. 1883, p. 203 ; Ogilby, Catal. Fish. N. S. Wales, p. 22, 

 1886 and Edib. Fish. & Crust. N. S. Wales, p. 67, 1893. 



Centropogon troschelii, Steindachner, Sitzb. Ak. Wien, liii. i. 

 1866, p. 440, pi. iv. fig. 1, Port Jackson. 



The Bullrout, Woods, Fish. & Fisher. N. S. Wales, pp. 48, 

 108, 1882. 



Neosebastes robustus, Waite, Thetis, p. 102, 1899. 



Bullrout. 



Depth of body greatest below the third dorsal spine, where 

 it is 2 f to 2| in the total length ; length of head 2^ to 2| in the 

 same. Snout as long as or a little longer than the diameter of 

 the eye, which is 3| to 4^ in the length of the head. Width of 

 interorbital region 5f to 6 in the head. Maxillary extending to 

 or not quite to the vertical from the posterior border of the pupil, 

 its length 24- to 2^ in the head, the width of its distal extremity 



