EEVIEW OF THE QUEENSLAND FOMACANTHINJi.—OGILBY. 179 



longest, extending to below the 7tli dorsal spine. Ventral a little longer than 

 the pectoral, the spine 1-65 in the outer ray, which is not produced, is 3-35 in 

 the body-length, and extends to midway between the vent and the anal. 



Body and fins dark brown, except the spinous dorsal which, with the head, 

 is strongly tinged Avith yellow, and the interradial membrane of the ventral, 

 which is nearly black. 



Etymology: — Lat: nox, night, in allusion to its sombre coloration. 



lieg. No. in Queensland jMuseum of specimen described — I, 14/2286. 



Mcasurcynents of the unique Queensland example : — See below. 



Bangc :—Fvo\n the Moluccas eastward to the Gulf of Papua and the 

 Barrier Reef. 



This angel-fish, which is apparently of rare occurence everywhere, was 

 first described by Bleeker from a single example obtained at Amboina. Sub- 

 sequentl}^ the same observer obtained three others from Goram. To the eastward 

 Goldie collected a fifth specimen at or near Port Moresby, B.N.G., as recorded by 

 Macleay. The example here described was collected \>y INlr. Kendall Broadbent 

 probably in the neighbourhood of Cooktown, N.Q., whence the bulk of his collec- 

 tions labeled "Barrier Reef" came. The species was correctly identified by the 

 late Mr. Charles W. de Vis, who, however, has not left any notice of its occur- 

 rence. These six form the only records of which I can find any account. 



Dimensions: — A small species, the largest recorded only 111 millim. 



In the table of measurements^ this species would come between H. 

 flavissimus and //. hicolor; from the former it differs in its habit and in the 

 presence of an extra dorsal spine, from the latter, irrespective of coloration, in 

 the absence of squamula?. Following are the measurements of the Queensland 

 example in terms of the previous table. 



Length from tip of longer jaw to that of caudal fin in millimeters — 85. 



Expressed in hundredths. 



From tip of snout to base of middle caudal rays — -100 ; greatest depth of 

 body — 59-4; least depth of caudal peduncle — 14-5; greatest width of head — 17-4; 

 greatest depth of head — 34-7 ; from tip of snout to end of bony opercle — 27-5 ; 

 from tip of snout to eye — 9-4; horizontal diameter of eye — 10-4; width between 

 middle of eyes — 9-1 ; height above middle of eyes — 8-9 ; between eye and angle of 

 mouth — 5-3 ; length of preopercular spine — ^15-5 ; basal length of spinous dorsal — 

 50 ; basal length of soft dorsal — 24 ; length of first dorsal spine — 10-1 ; length of 

 last dorsal spine — ^18-8 ; length of longest dorsal ray — 28 ; length of middle caudal 

 rays — 23-2 ; length of outer caudal rays — 20-3 ; length of first anal spine — 12-8 ; 

 length of last anal spine — 20-2 ; length of longest anal ray — 22-5 ; length of soft 

 anal — 28-3; length of pectoral fin — 29; length of ventral spine — 18-1; length of 

 ventral fin— 29-7. 



CHfflTODONTOPLUS DUBOULEYI (Giinther). 

 Holacanthus darwiniensis Kent, Proc. Roy. Soc. Queensl., vi, 1890, p. 235. 



Type locality: — Darwin, N.T. {H. darwiniensis). 



On the 8th of April of the current year M^e received from Mr. L. H. 

 ^laynard of Bundaberg, to whom we are already indebted for many valuable 



^ibid., p. 116. 



