194 " ENDEAVOUR " SCIENTIFIC RESULTS. 



Colour. — Body yellowish, with broad longitudinal lines 

 between each row of scales, and five dark cross-bands. The 

 first, which may be indefinite, passes from the occiput through 

 the eye to the isthmus, and is defined by darker margins. 

 The second extends from the anterior dorsal spines, across 

 the operculum to the ventrals, and has less distinct darker 

 margins. The third crosses the body from the base of the 

 three last dorsal spines to the belly anterior to the anal fin, 

 and together with those following it, is uniform brown. 

 The fourth extends from the middle of the soft dorsal to the 

 anal, and the fifth across the caudal peduncle. A large black 

 rounded ocellus is present on the soft dorsal fin above the 

 fourth body-band, and a dark spot is situated on the upper 

 surface of the caudal peduncle above the fifth. Ventrals 

 black ; anal very dark, with a light margin ; soft dorsal with 

 two submarginal darker fines. 



Described from four specimens 113-133 mm. long, the 

 largest of which is figured, which exhibit but little variation. 

 They are apparently identical with C. niuUeri, though the 

 numbers of dorsal and anal rays, and of scales on the lateral 

 line are less than those given in Klunzinger's brief description. 



Loc. — Seven miles N.N.E. of Bowen, Queensland, 16 

 fathoms ; 3rd August, 1910. 



Genus Chelmonops, Bleeker. 

 Chelmonops truncatus, Bleeker. 



Chcetodon truncatus, Kner, Sitzb Akad Wiss. Wien, xxxiv., 

 1859, p. 442, pi. ii. 



Chelmo trochilus, Giinther, Ann. Mag. Nat. Hist., (4), xiv., 

 1874 p. 368. 



Chelmonops truncatus, Waite, Rec. Austr. Mus., v., 1903, 

 p. 33-35 ; Id., Ogilby, Mem. Qld. Mus., v., 1916, p. 183. 



Variation. — Four specimens, 133-204 mm. long, exhibit 

 some variation in their colour-marking and in the form of 

 their fins. In the smaller examples there is a large and 

 distinct ocellus on the anterior dorsal rays, and included in 

 the fourth body-band, Avhicli becomes lost with age. The 

 larger examples have the anterior dorsal and anal rays 

 produced so as to form a more or less acute angular lobe on 

 each fin, as in Kner's figure ; in young specimens the rays 

 scarcely break the even contour of the fin-margins, which 

 have the angles more or less rounded. 



Locs. — Twentv miles N.N.E. of Double Island Point, 

 Queensland, 29-30 fathoms ; 28th August, 1910. 



Investigator Strait, South Australia. 



A^' estern Australia, betMeen Cape Naturaliste and Geraldton. 



