336 ACBONTTRrD.!;. 



caudal fin included). The profile of the snout is somewhat convex. 

 Nine lobatc teeth on each side of the upper jaw. Bro^vnish-red, 

 with more than thirty blue longitudinal lines ; cheek with seven or 

 eight blue longitudinal bands, the upper of which are united with 

 those of the other side of the head ; dorsal and anal fins violet, with 

 five or seven orange- coloured bands, and with a black spot posteriorly 

 in the axil ; caudal brown, darker towards the margin. {BheJc.) 

 East Indian Archipelago. 



19. Acanthurus caemleus. 



Seba, iii. 25. 2. 



Turdus rbomboidalis, Catosb. ii. pi. 10. tig. 1. 



Chfetodon nigrescent, Artcdi, Spec. p. 90. 



nigricans, L. S)/st. Nat. i. p. 402. 



Acanthurus ca3ruleus, £/. ScJin. p. 214 ; Cuv. ^- Val. x. p. 179 ; Gtn- 



chen. in Ramon de la Sagra, Cuba, Poiss. p. 121; Castcln. Anim. 



nouv, oil rares de VAnier. Sud, Poiss. p. 25. pi. 12. fig. 2. 



D. ^^. A. ^. V. 1/5. C«c. pjlor. 5. Vert. 8/13. 



The height of the body is two-thirds of the total length (caudal 

 not included). The upper jaw ■with six lobate incisors on each side. 

 Caudal spine with a process posteriorly, pointing backwards. The 

 upper profile of the snout concave. Caudal fin more or less emar- 

 ginate. Brownish, with bluish longitudinal lines, undulated on the 

 body, straight and rather oblique on the dorsal and anal fins. 



Atlantic coasts of Tropical America. 



a-f. Adult : skins. Caribbean Sea. From Dr. Parnell's Colleotion 

 g-h. Adult. West Indies. Purchased of Mr. Scrivener. 

 ir-k. Adult: stuffed. Bahia. 



20. Acanthurus lineolaius. 

 Cuv. Sf Val. X. p. 207 ; Bleek. Banda, iii. p. 101. 



D.i-. A.^. 



25 24 



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

 caudal fin included). The profile of the snout is convex. Six lo- 

 bate teeth on each side of the upper jaw. Caudal fin sub truncated, 

 with the angles produced, its length being contained thrice and a 

 third in the total length. Brown, dotted -svith blue, the dots being 

 disposed in longitudinal series : dorsal and anal fins with black mar- 

 gins, and with a black spot posteriorly in tne axil ; caudal black- and 

 yellow-edged. 



Coasts of Banda and Amboyna. 



E. A yellow or black marking on the shoulder or superiorly on the gill- 

 opening. 



21.. Acanthurus olivaceus. 



Valent iii. p. 409. iig. 199 ; Renard, ii. 12. 55. 



Acanthurus olivaceus, Bl. Schn. p. 213 ; Kittlitz in Mtcs. Senckenb. i. 

 p. 192. tab. 12. fig. 1. 



