110 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



CHAETODON NIGROPUNCTATUS Sauvage 



Chaetodon (Teiragonoptrus) nigropunctatus Sauvage, Bull. Soc. Philomath. 



Paris, 1880, p. 222. Mascate. 

 Choetodon (Tetragonopirus) nigropunctatus Sauvage, Hist. Nat. Madagascar, 



Poiss., 1891, p. 257, pi. 29, fig. 2 (type). 

 Chaetodon obscurus Boulenger, Proc. Zool. Soc. London, 1887, p. 657. 



Muscat. 



Upper profile of head concave. Snout larger than eye. Preopercle 

 not denticulate. Scales 38 in lateral line, 5 above, 17 or 18 below. 

 D. XIII, 22; A. Ill, 18; soft dorsal and anal angular, caudal truncate. 

 Dark brown, each scale with blackish center. Dorsal and anal spines, 

 edges of soft dorsal and anal and ventral blackish. Caudal black, 

 with broad yellow edge. Length 140 mm. (Boulenger.) 



CHAETODON DAYI Ahl 



Chaetodon dayi Ahl, Arch. Naturg., vol. 89, abth. A, Heft 5, 1923, p. 127 

 (on Chaetodon Day, Fishes of India, pt. 1, 1875, p. 109. — Jerdon, Madras 

 Journ. Lit. Sci., 1851, p. 134. Telicliprry). 



D. XIV, 26; A. Ill, 23. Lavender. Line from first dorsal to 

 muzzle yellow. Chin, throat and lower part of face and line from 

 top of opercle to pectoral base orange. Spinous dorsal membranes 

 yellow. Blue spot continues in line to upper part of soft dorsal and 

 also on anal. Soft dorsal green with yellowish edge. Anal and 

 ventral yellow. Caudal lavender, rays purple, margined on sides 

 with yellow and exteriorly with orange. Lips red. Length 152 mm. 

 (Jerdon.) 



A doubtful species, likely near Chaetodon nigropunctatus. 



CHAETODON DAHLI Ahl 



Chaetodon dahli Ahl, Arch. Naturg., vol. 89, abth. A, Heft 5, 1923, p. 143. 

 pi. 1, fig. 3. Ralum, Bismark Archipelago. 



Body rounded. Snout pointed. Eye greater than snout. Preo- 

 percle weakly denticulate. Scales 32 laterally, 5 above, 13 below. 

 D. XIII, 23; A. Ill, 19 or 20; soft vertical fins rounded. Yellowish, 

 darker on back. Blackish brown ocular band from nape to lower 

 edge of interopercle. Soft dorsal with dark spot. Soft dorsal and 

 anal with submarginal dark line and each with white edge. Caudal 

 base with black streak. Paired fins clear. Length 29 mm, (Ahl.) 



CHAETODON UNIMACULATUS Bloch 



Chaetodon unimaculaius Bloch, Naturg. Ausl. Fische, vol. 3, 1787, p. 75, 

 pi. 201, fig. 1. East Indian Collection. — Gmelin, Syst. Nat. Linn., vol. 

 1, pt. 3, 1789, p. 1258 (India).— Walbatjm, Arted. Pise, vol. 3, 1792, 

 p. 439 (on Bloch). — Forster, Fauna Indica, 1795, p. 15. — Schneider, 

 Syst. Ichth. Bloch, 1801, p. 221 (East Indies).— Cuvier, Hist. Nat. Poiss., 

 vol. 7, 1831, p. 72 (Tahiti). — Valenciennes, Regne Animal Cuvier, Poiss., 

 111., 1839, pi. 39, fig. 3.— GuNTHER, Cat. Fish. Brit. Mus., vol. 2, 1860, 

 p. 11 (Amboina). — Guichenot, M^ni. Soc. Hist. Nat. Cherbourg, ser. 2, 

 vol. 2, 1866, p. 145 (Madagascar). — Playfair, Fishes of Zanzibar, 1866, 



