494 PROCEEDINGS OF THE ACADEMY OF [1899. 



with indistinct narrow, wavy, blackish stripes arranged crosswise. 

 Posterior portion of the caudal lighter than the general color and 

 with a dark terminal band along the margin which is light. Tips 

 of both D. and A, project posteriorly as far as the posterior mar- 

 gin of the posterior lamina Lateral line present extending along 

 the upper part of the trunk parallel to the line of the back to 

 below the posterior D. region where it terminates. Total length, 

 without filaments, 17:^ inches. 



Two fine specimens. Nos. 23,298 and 23,299. 



14. Teuthis guttatus (Bloch and Schneider). 



Acanthurus guttatus Bloch and Schneider, Syst. Ichth., 1801, p. 215. 

 Acanthurus quttatus Cuvier and Valeuciennes, Hist. Nat. Poiss., X, 



1835, p. 143. 

 Harpurus guttatus Forster, Descript. Animal., Ed. Lichtenstein, 1844, 



p. 218. 

 Acanthurus guttatus Giinther, Cat. Fish. Brit. Mus., Ill, 1861, p. 329 ; 



and in Fische der Siidsee, .lournal des Mus. Godeffroy, II, 1873-75, 



p. 109, pi. 69, f. a. 



The name Acanthurus guttatus of Bloch and Schneider is the 

 earliest for this species that is tenable, though they refer to 

 ^'Harpurus guttatus J. R. Forster, iii, 9," which seems to me to 

 refer to some unpublished work, as the first reference to Harpurus 

 guttatus is published in the Descript. Animal., Ed. Lichtenstein. 



Xos. 23,300 and 23,301. 



15. TeutMs acMUes 'Shaw). 



Acanthurus achilles Shaw, General ZoiHogy, IV, 1803, p. 383. 



Form of the body oblong ovoid, somewhat produced anteriorly, 

 much compres.sed and with the greatest depth about the anterior 

 third, and contained twice in the length without caudal. Head 

 about lA in depth of the body and 4^ in the length from tip of 

 snout to the margin of the middle cadual rays Snout small and 

 produced and the region forming the anterior profile line of the 

 head above convex, rounded, and having a swollen appearance; 

 cheeks concave. Nares directly in front of the eye. Eye midway 

 between the tip of the snout and the tip of the first T>. spine and 

 also midway between the upper anterior profile line of the head 

 and the upper point formed by the branchial aperture; 3 in 

 snout, a little over 4 in head and 1| in the interorbital space. 

 Teeth broad, the edge forming 4 or 5 lobate denticulations, which 

 are more distinct in the upper jaw than in the lower, and about 



