544 A COLLECTION OF FISHES FROM SUMATRA. 



brown, like general paler ground-color of back. Anal whitish. Pectoral with its 

 upper half extending to tip of iBin pale dusky-purplish, lower half of fin dilute 

 yellowish-olivaceous. Ventral whitish. Iris tinged with orange. Peritoneum pale, 

 shaded with dull purplish-black. 



Length 16 inches. 



Type No. 27,735, A. N. S. P. Padang. 



One example. Closely related to Scarus riibroviolaceus Bleeker. According 

 to Bleeker's figure ' it differs in the presence of dark markings of trunk extending 

 well out on bases of dorsal fins and profile of head above evenly convex. 



(KaXos, beautiful.) 



198. Scarus cantori (Bleeker). 



199. Scarus quoyi Valenciennes. 



ILARCHID^. 



200. Ilarches orbis (Bloch). 



201. Harpochirus longimanus (Schneider). Plate XXIII, upper figure. 



202. Ephippus argus (Linnsus). 



203. Platax orbicularis (Forskal). 



204. Platax vespertilio (Bloch). 



EPHIPPID-ffi. 

 PLATACID^. 



CH.ffiTODONTIDiE. 



205. Ch.-etodon vagabundus Linnseus. 



206. Ch^todon trifasciatus Park. 



207. Heniochus macrolepidotus (Linnaeus). 



HARPURID^E, 



HARPURUS Forster. 

 Harpurus Forster, Enchir. Hist. Nat., 1788,^ p. 84 (no type indicated).' 

 Aspisurus Lac^p^de, Hist. Nat. Poiss., IV, 1802, p. 555 {so/iar = sohal). 



Forster's account does not include any species. It was supposed to be identical 

 with Acanthurus Forskal {monoceros) = Monoceros Schneider. Acanthurus Fors- 

 kal is rejected on the same basis as Abu-defduf, Siganus, etc. 



208. Harpurus gnophodes sp. nov. Plate XXII, upper figure. 



Head 3|-; depth 2|-; D. IX, 25; A. IIL 24; P. ii, 15; V. I, 5 ; scales 135 ? 

 in a median lateral series below lateral line to base of caudal ; snout li in head ; 

 eye 4|^ ; maxillary 4|- ; interorbital space 2|- ; fifth dorsal spine If ; fifth dorsal ray 

 1|-; third anal spine 2|-; fifth anal ray If; least depth of caudal peduncle 2|-; 

 median caudal rays 1^; ventral 1^; width of head 2; pectoral 3|^ in trunk. 



Body ovoid, well compressed, greatest depth about anus, profiles similar and 

 evenly curved. Caudal peduncle compressed, and about as long as deep. 



Head short, and profiles evenly convex. Snout long, convex, and upper jaw 

 projecting but little in front. Eye round, high, anterior margin about midway in 



' Atlas Ichtb., I, 1862, pi. 13, fig. 3. 



^ The edition before nie is the revised one published in Londou in 1797. It has the same paga- 

 nation as the reference quoted above, which I have not consulted. 



' Solvil is here restricted to this name to form an absolute synonym with Aspisurus. 



