342 ACRONtTEIDiE. 



III. Teeth setiform, moveable, dilated onh/ at the extre^nity. 



34. Acanthurus strigosus. 



Bennett, Zool. Journ. fasc. xiii. p. 41 ; Ciiv. ^ Val. x. p. 243. 



The height of the body is more than one-half of the length (the 

 caudal fin not included). Anterior profile of the snout nearly- 

 straight. Teeth setiform, with the extremity dilated and laterally 

 serrated. Brown, with numerous bluish longitudinal lines. 



Sandmch Islands. New Guinea, 



a, h-c. Adult. Sandwich Islands. From the Collection of the Zoo- 

 logical Society. — Types of the species. 



35. Acanthurus ctenodou. 



Acanthurus ctenodon, Cuv. df Val. x. p. 241. pi. 289. 



strigosus, Bleek. Natuurk. Tydschr. Nederl. Ind. iv. p. 264, & vi. 



p. 102. 



T) -^ A -— 



29-30' 26-27* 



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

 caudal fin not included). Anterior profile of the snout nearly straight. 

 Teeth setiform, with the extremity slightly dilated and laterally 

 serrated. Uniform brown (in spu-its). 



Ceylon. East Indian Archipelago. New Guinea. New Hebrides. 

 Caroline Islands. 



a. Adult : skin. Ceylon. From Dr. Kelaart's Collection. 

 h, c. Fine specimens. Amboyna. Purchased of Mr. Frank. 



d. Half-grown. Ceram. Purchased of Mr. Stevens. 



e. Adult: stuffed. Aneiteum. From Mr. MacgilUvray's Collection. 



IV. With only Jive to three dorsal spines. 



36. Acanthurus rhombeus. 



Acanthurus flavescens, Benu. Zool. Journ. iv. 1828, p. 40. 



rhombeus, Kittl. in Mus. Sencketib. i. p. 196. tab. 13. fig. 6. 



scopas, Cuv. (§• Val. x. p. 245. pi. 290 ; Bleek. Natuurk. Tydschr. 



Nederl. Ind. 1851, p. 348 ; Guichen. in Ramoti de la Sat/ra, Cuba, 



Poiss. p. 122. 

 altivelis, Cuv. ^ Val. x. p. 249. 



D.A A.l V.1/5. 



The body is as high as long (head and caudal fin not included). 

 Snout very produced ; six lobate teeth on each side of the upper 

 jaw. Scales minute, rough ; tail with numerous small prickles 

 i)efore the caudal spine. Dorsal and anal fins more or less elevated. 

 Brownish-black; the membranaceous sheath of the caudal spine 

 white ; head and anterior part of the body generally with minute 



