106 ACANTHOPTERYGLT. 



Habitat. — A specimen in the Berlin Museum is from the Red Sea. I have the species from Ceylon, and 

 Valenciennes' fish in Paris is from the Mauritius, labelled " Chcetodon chrysurus, v. p. 423," by Valenciennes, 

 but does not correspond with the description of C. chrysurus. Some other specimens are likewise thus labelled 

 by Valenciennes, but the locality from which they were procured is unknown. 



7. Chastodon auriga, Plate XXVII, fig. 3 (var. setifer). 



Forsk. p. 60 ; Bl. Schn. p. 226 ; Cuv. and Val. vii, p. 79 ; Riipp. 1ST. W. Fische, p. 28 ; Giinther, Catal. ii, 

 p. 7 ; Klunzing. Fische d. Roth. Meer. Verh. z. b. Ges. Wien, 1870, p. 775. 



Chcetodon setifer, Bloch, t. 425, f. 1 ; Bl. Schn. p. 225 ; Cuv. and Val. vii, p. 76 ; Guerin, Icon. Poiss. 

 pi. 22, f. 1; Less.Voy. Coq. Zool. ii, p. 175, Poiss. pi. 29, f. 2; Richards. Ich. China, p. 246; Cuv. Reg. Anim. 

 111. Poiss. pi. 38, f. 1 ; Jenyns, Zool. Beagle, Fish. p. 61 ; Giinther, Catal. ii, p. 6 and Fische d. Sudsee, p. 36, 

 t. xxvi, f. B ; Kner, Novara Fische, p. 97. 



Pomacentrus filamentosus, Lacep. iv, pp. 506, 511. 



Cliastodon sebanus, Cuv. and Val. vii, p. 74. 



Chmtodon auriga, var. Riipp. N. W. Fische, p. 28. 



Chmtodon lunaris, Gronov. ed. Gray, p. 70. 



Linophora auriga, Kaup, Arch. d. Naturg. 1860, pt. 2, pp. 137 and 156. 



B. vi, D. aza, P. 15, V. 1/5, A ^^, C. 17, L. r. |f L. tr. SHfr/13. 



Length of head 3/11 to 2/7, of caudal 1/7, height of body 4/7 to 1/2 of the total length. Eyes— diameter 

 2/7 of length of head, nearly \\ diameters from end of snout, and 1 apart. Snout pointed. The maxilla reaches 

 half way to below the front edge of the orbit. Preopercle very finely serrated. Teeth — brush-like. Fins, — in 

 the specimen figured there are only eleven dorsal spines of moderate strength, the fifth ray is produced into a 

 short filament, soft portions of dorsal and anal angularly shaped : pectoral equals the length of the head posterior 

 to the nostrils : third anal spine the longest : caudal slightly emarginate. Colours — in C. auriga a brown ocular 

 band, having a white anterior edge, passes through the orbit to over the interopercle. Body with darkish lines, 

 passing upwards and backwards in the anterior third of the body, and downwards and backwards posteriorly. 

 A darkish band passes from the base of the soft dorsal across the free portion of the tail and to the lower half 

 of the anal. A dark band goes through the middle of the anal fin. Dorsal, anal, and caudal edged with white. 

 In the variety C. setifer the ocular band, which has white edges, widens after it has passed the orbit and extends 

 to the interopercle. Body with narrow darkish bands passing upwards and backwards in the anterior third of 

 the body, and downwards and backwards in the last two thirds. A dark ocellus on the centre of the middle 

 dorsal rays. Anal with a fine black intramarginal band having a white outer edge, upper and hind margins of 

 the anal edged with black : two fine vertical lines on the caudal fin which enclose a semilunar space. 



Habitat. — From the Red Sea, through the seas of India to Polynesia. The specimen figured was captured 

 at the Nicobars, and is 4 T 6 o inches in length. 



8. Chsetodon Zleinii. 



Bloch,* t. 218, f. 2 ; Bl. Schn. p. 225 ; Giinther, Catal. ii, p. 22. 



Chcetodon virescens, Cuv. and Val. vii, p. 30 ; Bleeker, Verh. Bat. Gen. xxiii. Chart, p. 18. 



Chcetodon flavescens, Bennett, Proc. Zool. Soc. 1831, p. 61. 



B. vi, D. JL P. 15, V. 1/5, A. t^-o, C. 17, L. 1. 33, L. tr. 5/11. 



Length of head 4|, of caudal 1/6, height of body nearly 1/2 of the total length. Eyes — diameter 1/3 of 

 length of head, 1 diameter from end of snout, and \\ apart. The maxilla reaches to below the front nostril. 

 Preopercle entire. Fins — dorsal spines of moderate strength increasing in length to the fifth, the soft portion 

 of the fin rounded and rather higher than the spinous : caudal rounded : second and third anal spines of about 

 equal strength, their length about equal to the fifth of the dorsal. Colours — uniform brownish, becoming darkest 

 posteriorly : a rather broad ocular band extends from in front of the dorsal fin, through the eye over the pre- 

 and inter-opercles to the chest and goes to the base of the ventral fin : a black band over the snout. Ventrals 

 black : edges of the soft dorsal, anal, and caudal black. 



Habitat. — Seas of India to the Malay Archipelago. 



9. Chsetodon guttatissimus, Plate XXVII, fig. 4. 



Bennett, Proc. Zool. Soc. ii, p. 183; Giinther, Catal. ii, p. 26; ? Klunz. Verh. z. b. Ges. Wien, 1870, 

 v p. 780. 



Chmtodon tachete, Lienan, Nat. Hist. Soc. Mauritius, 1839, p. 36. 

 B. vi, D. -H, P. 15, V. 1/5, A. t^, C. 19, L. 1. 38, L. r. ff 



Length of head 4/17, of caudal 2/11, height of body 1/2 of the total length. Eyes— diameter 1/3 of 

 length of head, 1 diameter from end of snout and also apart. Preopercle serrated : the posterior extremity of 

 the maxilla reaches nearly half way to below the orbit. Fins — soft portions of dorsal and anal rounded 

 posteriorly. Colours — a brown white-edged ocular band one third the width of the eye passes from the nape to 

 the lower edge of the interopercle. Body yellow, each scale having a brown spot : dorsal and anal fins with an 



* Klein, MSS. iv, t. 10, f. 2, p. 255. 



