1. ACANTHURUS. 339 



F. A whitish rijig round the mouth or round the lotcerjaw. 

 26. Acanthurus glaucopareius. 



Valent. iii. p. 4G6. fig. 383, p. 470. fig. 410; Renard, i. 9. 63 ; Ruysch, 



Tlieatr. p. 23. tab. 12. tig. 10, & p. 40. pi. 20. tig. 14 ; Sehn, iii. 25. 3. 



Harpurus nigricans, Forst. Descr. Anim. cur. Licht. p. 214 (Bl. Schn. 



p. 212). 

 Acanthui'us aliala, Less. Voy. Coq. Zool. ii. p. 150. 



glaucopareius, Cur. i<j- Val. x. p. 190 j Kittlitz in Mus. Senckcnb. 



i. p. 192. tab. 13. fig. 3 ; Bleek. Act. Soc. Sc. Indo-Ncderi i., Am- 

 boma, p. 47. 



^■lo- ^-k "^-VS. Caec.pylor. 5. 



Scales very small, smooth. The height of the body is contained 

 once and two-thirds in the total length (the caudal fin not included). 

 The upper jaw with five truncated and lobatc teeth on each side. 

 Caudal spine terminating posteiiorly in a projecting process. The 

 upper profile of the snout is subvertical, very slightly concave. 

 Caudal fin emarginate. Blackish-violet : a white subcrescentic spot 

 below tne orbit ; a white ring cncii-cling the mouth ; a whitish line 

 running along the base of the dorsal and anal fins, and widening 

 posteriorly ; caudal fine light violet, with a yellowish cross-band. 



PoljTiesia. Amboyna. 



a. Fine specimen. Amboyna. Purchased of Mr. Frank. 



b. Adult. Otaheiti. From Forster's Collection. — Typo of the species. 



27. Acanthurus celebicus. 



Blecker, Celebes, iii. p. 7(51. 



T) ±±. A ^ 

 ■^•26-25- ^•^• 



The height of the body is nearly one-third of the total length (the 

 caudal fin included). The profile of the snout is concave. Eight 

 lobate teeth on each side of the upper jaw. Caudal and ventral lobes 

 pointed. Brown : mouth with a white ring and with black lips ; 

 fins dark brown ; caudal blackish, with a white margin. {Bl.) 



Seas of Macassar and of Ternate. 



28. Acanthurus fuscus. 

 Steindachner in Verhandl. Zool. Bot. Gesellsch. Wioi, 1861, p. 176. taf. 6. 



The height of the body is rather more than one -half of the total 

 length, without caudal, or one-third with the caudal. The profile of 

 the snout is concave. Seven lobate teeth on each side of the upper 

 jaw. Caudal and ventral lobes produced into filaments. Brown : 

 mouth with a white ring and with black lips ; vertical and ventral 

 fins black ; the caudal blackish towards the margin. 



Ambo}Tia. 



This fish is probably identical Avith A. celebicus, Block., the .speci- 

 men in the Vienna Museum being apparently an adult fish, with the 

 appendages of the fins fully developed. 



7. 2 



