BEVIEW OF THE QUEENSLAND POMACANTHINM.—OGILBY. 113 



the snout, which is 2-6 in that of the head ; interorbital region a little wider and 

 two thirds higher than the eye-diameter. Jaws equal, maxillary extending to 

 below the anterior nostril. Preorbital without spines, its width 1-15 in the 

 eye-diameter. Hinder limb of preopercle vertical, serrated or rugose, the spine 

 2-4 in the length of the head and reaching to below the pectoral axil. 



Scales minute and strongly ctenoid, the entire exposed portion coarsely 

 spinulose. Lateral line interrupted, the upper portion terminating close in front 

 of the last dorsal rays, the lower commencing below the middle of the soft dorsal 

 and extending straight to the root of the caudal, its tubes widely separated. 



Dorsal fin originating above the vertical limb of the preopercle, with xi 21 

 rays, the soft portion only about one twelfth shorter than the spinous; spines 

 graduated, the 1st well developed, 2-25 in the last, which is a little less than the 

 4th and longest ray and nearly one fourth of the body-length; outline of soft 

 fin evenly convex. Caudal fin rounded, the middle rays as long as the outer and 

 4-35 in the length of the body. Anal with iii 19 rays, originating below the 1st 

 dorsal ray, the 1st spine half as long as the 3rd, which is as long as the anterior 

 rays and 3-7 in the body-length; soft anal similar to but a little longer and 

 higher than the soft dorsal. Pectoral with 18 rays, its length 4-3 in that of the 

 body; 4th ray longest, extending to below the 8th dorsal spine. Ventral a little 

 longer than the pectoral, its spine 1-35 in the outer ray, which is slightly 

 produced, 3-8 in the body-length, and reaches to the anal. 



Gill-rakers 3 -)- 13, all short and triangular. 



Purplish brown; a broad yellow band from before and below the three 

 anterior spines across the opercle and base of the pectoral, to between the origin 

 of the ventral and the vent ; a second band from the sixth dorsal spine to the 

 peduncle, increasing in width from the front, and about evenly divided between 

 the body and fin, is sometimes continued across the peduncle, the extension being 

 brown-spotted. Sides of head and breast lighter than the body, uniform or dark- 

 spotted, lips and chin yellow. Dorsal and anal fins purple, with numerous pale 

 blue, wavy, often interrupted horizontal lines; caudal, pectoral, and ventral fins 

 yellow. 



Variations: — McCulloch (loc. cit.) writes — "Klunzinger and Macleay have 

 noted considerable variation in the arrangement of the lighter markings on the 

 broad brown body-band. These may form either a network with the lines 

 descending from the back to the belly, or be longitudinal and nearly straight. 

 In others, again, as in that figured, they may be absent and represented only by 

 a few irregular spots near the edges of the otherwise uniform brown surface. 

 The lines on the fins are characteristic, but appear dark violet in some specimens 

 and pale blue in others ; the margins of the fins are similarly either light or 

 dark. ' ' 



Etymology: — Named for Mr. F. H. du Bouley, an ardent field naturalist 

 and collector of West Australia, whose recent death we have to deplore. 



H 



