FISHES OF THE PHOENIX AND SAMOAN ISLANDS 165 



the white area or white margin posteriorly on the operculum; the 

 caudal fin of A. racklifei is dusky to blackish except the pale margin, 

 while A. glauco pareius has a submarginal pale band below the sub- 

 marginal blackish band, and the caudal fin at its base is abruptly pale 

 or white; the adults of A. achiUes have a large pale area, red in life, 

 around the caudal spine, but lacking in this new species. 



ACANTHURUS LINEATUS (Linnaeus) 



Cliactodon lineatiis LaNNAEus, Systema naturae, ed. 10, p. 274, 1758. 



115133, Tau Island, reef at Siulagi Point, June 27, 1939, 2 specimens. 



11.5130, Tutuila Island, reef at entrance to Pago Pago Bay, June 2, 1939, 4 

 specimens. 



115129, Tutuila Island, Fagasa Bay, rock pools, June 5, 1939, 1 specimen. 

 115132. Enderbury Island, May 15-19, 1939, 4 specimens. 

 115131, Tutuila Island, reef at Alofau, June 3, 1939, 2 specimens. 

 15131, Samoan Islands, Col. A. B. Steinberger, 1 specimen. 

 52315, Apia, Samoa, Jordan and Kellogg, 11 specimens. 



ACANTHURUS GUTTATUS Bloch 



Acanthurus guttatus Bloch, in Schneider, Systema ichthyologiae, p. 215, 1801. 



115136, Swains Island reef, May 3-9, 1939, 10 specimens. 



115134, Tan Island, reef at Siulagi Point, June 27, 11139, 12 specimens. 



115135, Hull Island, channel. July 7-17, 193:), 1 spe<imeu. 

 52321, Apia, Samoa, Jordan and Kellogg, 4 specimens. 



ACANTHURUS UMBRA (Jenkins) 



Teuthis umhra Jenkins, Bull. U. S. Bur. Fish., vol. 22 (No. 2), p. 477, 1903 

 (type locality: Honolulu). (Although I have not been able to find the 

 type in the National Museum, a good figure of it occurs in Bull. U. S. Bur. 

 Fish., vol. 23, pt. 1, pi. 47, 1905. ) 



115178, Tutuila Island, reef at Pagai, June 4, 1939, L. P. Schultz and Frank 

 Taiga, 1 specimen. 



ACANTHURUS BARIENE Lesson 



Acanthurus hm-lene Lesson, Voyage autour du monde . . . Coquille, Zool., vol. 

 2, pt. 1, p. 150, 1830. 



No specimens from the Phoenix or Samoan Islands in the National 

 Museum. 



ACANTHURUS ELONGATUS (Lacepede) 



Clmetodon elongaius Lacepede, Histoire naturelle des poissons, vol. 4, pp. 454, 

 473, fig., 1803. 



In the use of this name I follow other authors, although Lacepede's 

 description is of little value. My large series of specimens indicates 

 that A. lineolafus is a synonym of A. elongatus. Giinther's plate 



