36 SQUAMIPINNES. 



spines low, the fifth longest, and equal to the extent of the snout. Anal spines strong, 

 the second stronger and scarcely longer than the third. 



Colour. — Ocular band rather narrower than the orbit, brown above and below and 

 yellow on the cheek ; it extends from the origin of the dorsal, round the throat. Back 

 and belly brownish, shaded off into white or yellowish on the middle of the sides. Five 

 or six yellow longitudinal stripes on the belly, the highest proceeding from the axil of 

 the pectoral. Tail yellow ; caudal yellow, with a broad white or grey margin ; vertical 

 fins yellow, with a grey intramarginal line on the soft portion. Posterior margin of 

 operculum yellow ; ventrals yellow ; pectorals white. Muzzle blackish, with several 

 yellow lines across the interorbital space, two yellow circular marks on the neck. 



Description of the Specimen. — The body is rather oval, the greatest height being 

 below the sixth dorsal spine, where it is contained twice and a quarter in the total 

 length. The upper profile descends rather obliquely from the origin of the dorsal, and is 

 slightly concave in front of the orbit ; the lower profile also is concave below the angle 

 of the mouth. The snout is somewhat produced, pointed, and its length is once and a 

 half the diameter of the eye. The angle of the prseoperculum is very obtuse, the limbs 

 being entire. The spines of the dorsal are short and strong, the fifth, sixth, and seventh 

 being longest and nearly equal, and about the same length as the snout ; the succeeding 

 spines become shorter, the last being slightly shorter than the fourth ; the soft portion 

 is scarcely elevated posteriorly and is obtusely pointed. The caudal is slightly emarginate, 

 the upper lobe being somewhat produced. The soft portion of the anal resembles that 

 of the dorsal; the middle spine is stronger, but hardly shorter than the third, which is 

 longer than the longest of the dorsal ; the first of the anal equals the third of the 

 dorsal. The pectorals reach the vertical from the vent, the ventrals do not. The scales 

 are large, especially those on the middle of the sides; they are rather irregularly 

 arranged, and smaller scales are intercalated between the larger ones. The lateral line 

 ascends to below the tenth dorsal spine, and runs backwards not far below the base of 

 the dorsal, towards the end of that fin, having entirely disappeared on the free portion of 

 the tail. Length 1\ inches. 



Zanzibar. 



110. Chaetodon larvatus. [6 j 

 ("hsetodon larvatus, (Ehrenb.) Cuv. § Val. vii. p. 45 ; RUpp. N. TV. Fische, p. 28 ; GUnth. Fish. ii. p. 31 . 



Aden. Red Sea. 



111. Chaetodon xanthocephalus. [625.] 

 Cluctodon xanthocephalus, Benn. Proc. Coram . Zool. Soc. ii. p. 182; Giinth. Fish. ii. p. 33. 



Zanzibar. Ceylon. 



