J 78 MEMOIES OF TRE QUEENSLAND MUSEUM. 



REVIEW OF THE 

 QUEENSLAND POMACANTHIN/E. 



SUPPLEMENT No. 1/ 



By J. Douglas Ogtlby. 



Since the publication of last year's '' Memoirs" the following species 

 has been discovered among the Old Collection of the Queensland Museum. 



HOLACANTHUS NOX Bleeker. 



Holacanthns nox Bleeker, Nat. Tijds. Nederl. Ind., v. 1853, p. 338 ; id., ibid., xv, 1858, p. 200 ; 

 Giinther, Brit. Mus. Catal. Fish., ii, 1860, p. 51 ; Bleeker, Verh. Akad. Amsterdam, xvii, 

 1877, Chetod., p. 131 ; id.. Arch. Neerl. Sci. Nat., xii, 1877, p. 22 ; id.. Atlas Ichth., ix, 

 1877, p. 62, pi. ccclxviii, fig. 3 ; Macleay, Proe. Limi. Soc. N. S. Wales, vii, pt, 2, 1882, 

 p. 244. 



2'yi)e locality : — Amboina. 



Depth of body 1-7 in its length; dorsal contour rather more elevated than 

 the ventral, its anterior profile linear and strongly acclivous to above the hinder 

 border of the eye, thence by a moderate convexity to about the 4th dorsal spine, 

 ]x\vond '\^■hich it descends in a long gentle curve to the middle of the soft dorsal, 

 whence it bends more abruptly downward.s to the caudal peduncle; ventral 

 contour evenly convex from the chin to the anal, the base of which is similarly 

 convex ; least depth of peduncle 6-9 in the length of the body. Width of head 

 1-6 in its length, which is 1-25 in its depth and 3-65 in the body-length. Diameter 

 of eye a little more than the lengtb of the snout, which is 2-9 in that of the head ; 

 interorbital region a little wider than deep, its width 1-15 in the eye-diameter. 

 Maxillary extending to below the anterior nostril. Preorbital coarsely denti- 

 culated, its width 1-4 in the eye-diameter. Hinder limb of preopercle vertical 

 and strongly denticulate ; the lower limb with three graduated teeth posteriorly, 

 the strongest next to the spine, which is long and feebly curved, 1-75 in the 

 length of the head and extends to below the pectoral-axil. 



Scales similar to those of IT. hicolor, in 48 series above and beyond the 

 lateral line, in 6/1/22 between the spinous dorsal and the vent ; scpiamulEe absent. 

 Lateral line with 30 open pores, terminating below the middle of the soft dorsal. 



Dorsal fin originating above the opercle. with xv 15 rays, the soft portion 

 2-1 in the length of the spinous; spines graduated, the 1st well developed, 1-85 

 in the last, which is 1-5 in the longest ray and 5-3 in the body-length ; soft dorsal 

 with acutely pointed outline, the 10th ray longest, extending to above the middle 

 of the caudal, its hinder border linear. Caudal fin rounded, the middle rays 

 longer than the outer and 4-3 in the length of the body. Anal fin with iii 17 rays, 

 originating below the 11th dorsal spine, the ]st spine 1-6 in the last, which is 

 1 -2 in the longest ray ; soft anal similar to but longer and blunter than the soft 

 dorsal. Pectoral with 16 rays, its length 3-5 in that of the body, the 5th ray 



Mem. Queens]. Mns., iii, 28 Jan. 1915, pp. 99-116. 



