336 ACBONURID^.. 



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

 Nine lobate teeth on each side of the upper jaw. Brownish-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 firis violet, with 

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

 in the axU ; caudal brown, darker towards the margin. (Bleeh.) 

 East Indian Archipelago. 



19. Acanthurus cseruleus. 



Seba, ill. 25. 2. 



Tardus rhomboidalis, Catesb. ii. pi. 10. tig. 1. 



Chsetodoii nigTCScens, Artedi, Spec. p. 90. 



nigricans, L. Sysf. Nat. i. p. 462. 



Acanthurus creruleus, Bl Schn. p. 214 ; Cuv. ^ Val. x. p. 179 ; Gtii- 



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



nouv. ou rures de VAm^r. Sud, Poiss. p. 25. pi. 12. fig. 2. 



D. ^. A. ^. V. 1/5. Cffic. pylor. 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, Caiibbean Sea. From Dr. ParneU's Collection 

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

 ir-k. Adult: stuffed. Bahia. 



20. Acanthurus lineolatus. 



Cuv. 8r Val X. p. 207 ; Sleek. Panda, iii. p. 101. 

 D.-^. A. 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 subtruncated, 

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

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

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

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

 yeUow-edged. 



Coasts of Banda and Amboyna. 



E. A yellow or black markiiu/ on the shoulder or superiorly on the yill- 

 openiny. 



21. Acanthurus olivaceus. 



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



Acanthurus olivaceus, Bl. Schn. p. 21-3 ; Kittlitz in Mns. Senckenb. i. 

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



