1. ACANTHUKUS. 337 



riarpurus paroticus, Furst. Dcscr. Anim. ed. Llcht. p. 183. 

 Acautliurus eparai, Lcsn. Voi/. Cuq. Zoul. ii. p. 147, Poiss. pi. 27. fig. 1. 

 liumoralis, Cuv. ^- Val. x. p. 231 ; Blcek. Celeb, iii. p. 702; Fi/d. 



c^ Sfntl. Vol/. Bonite, Zool. i. ]i. KJO ; Jein/ns, Voy. Bcii'cjlv, Fislivs, 



p. 76. 



D. ~- A. ^. Cicc. pylor. 0. 



The height of the body is one-half or rather less than one-half of 

 the total leng-th (the caudal fin not included). The anterior profile 

 of the snout more or less convex. There are eight lobate incisors on 

 each side of the upper jaw. Caudal spine ^^^th a process posteriorly, 

 pointing backwards, lirownish-olivc : an elongate orange -coloured, 

 black-edged spot on the trunk, extending from the operculum to 

 beyond the end of the pectoral fin. Caudal fin with a white pos- 

 terior margin, and, in immature individuals, Avith a whitish band 

 across the base ; dorsal and anal fins with an orange-coloured line 

 along the base. 



Polynesia. Celebes. Amboyna. Goram. 



a. Adult. Otaheiti. From Forster's Collection. — Type of the 



species. 

 h. Half-grown. Fcejce Islands. Voyage of the ' Herald.' 



22. Acanthurus pyroferus. 



Acantlnu-us pyroferus, iT/V^/. /// Mks. ScnclotJ). i. p. 193. taf. 12. fig. 2. 

 annigcr, Ciiv. i^- Val. x. p. 234. 



D-4- A. A 



The height of the body is one-half of the length (the caudal fin 

 not included). Snout rather produced, with the upper profile con- 

 cave. Dark brown : shoulder witlx an oblong vertical yellow spot, 

 edged with black ; caudal with a broad yellow posterior margin. 

 {KM.) 



Coast of Ulea. 



The typical specimen is in the St. Petersburg Museum. 



23. Acanthurus tennentii. 

 D.|. A.^. V.1/5. 



The height of the body is one-half of the total length (the caudal 

 fin not included) . The anterior profile of the snout is nearly straight. 

 There are six lobate incisors on each side of the upper jaw, and eight 

 on each side of the lower. The dorsal spines are moderately stout, 

 increasing in length posteriorly, the hindmost being one-third of the 

 depth of the body. Dorsal and anal fins rounded posteriorly ; caudal 

 slightly emarginate. Scales minute. The caudal spine of moderate 

 length and strength, with a process posteriorly, pointing backwards. 

 Brown (in a dried state) : a roundish black ring on the shoulder, 

 apparently with light centre ; caudal with a broad white margin. 



Sea of Ceylon. 

 a. Skin. From Dr. Kelaart's Collection. 



