FISHES OF THE PHOEXIX AiS^D SAMOAN ISLANDS 291 



with a band that exteuds to below the pectoral fin base, 

 fading posteriorly; snout 2% in standard length. 



Balistes aculeatus Linnaeus 

 7^. Caudal peduncle region with 5 to 10 rows of spines on each side 

 8(1. Caudal peduncle with about five or six rows of short spines, 

 the three or four middle ones of about same length and 

 strength of spines; ground color of trunk slaty brown, 

 paler below, abdomen whitish; chin and lower lip whitish; 

 a pale streak across snout thence backward toward base 

 of pectoral ; top of head with light spots, sides of head and 

 trunk with centers of scales dark brownish; soft dorsal 

 with pale edge then a submarginal dark brown band, rest 

 (if fin pale except basal portion, which is dark brown; anal 

 and caudal fins similar, except that basal portion of caudal 

 fin has a very dark brown ti'ansverse band; dorsal rays 

 about III-26 ; anal 24 ; pectoral 14, scales about 37. 



Balistes flavimarg'inatus Riippell 

 8?^ Caudal peduncle region with from 7 to 10 rows of small 

 spines ; anal rays about 25 ; dorsal III-27 ; pectoral 13 ; 

 scale rows on side of body about 49; color of head and 

 trunk brownish, lips pale; chin with two pale cross bands, 

 one below lower lip and other on under side of chin ; pec- 

 toral dusky; caudal fin with white crescent shaped band 

 along its posterior margin, upper and lower edges with 

 white band, rest of fin blackish; soft dorsal and caudal 

 pale dusky, the bases of the rays darker; snout in standard 

 length 3V2 Balistes chrysopterus Bloch 



Genus CANTHI DERMIS Swainson 



Canthidermis Swainson, The natural history and classification of fishes, 

 amphibians, and reptiles, or monocardian animals, vol. 2, p. 825, 1839. 

 (Type, Balistes angulosus Quoy and Gaimard.) 



CANTHIDERMIS MACULATUS (Bloch) 



Balistes macnlatus Bloch, Naturgeschichte der ausliindischen Fische, pt. 2, 

 p. 25, pi. 151, 1786. 



The relationship of O. mxiGulatus and G. rotundatus is not under- 

 stood by me, and sitice we do not have adequate specimens for their 

 separation and the literature concerning them does not clear up the 

 matter satisfactorily, I am using the oldest name. Only one species 

 of this type appears to occur in the region imder consideration. 

 There are no specimens in National Museum from the Phoenix or 

 Samoan Islands. 



Genus BALISTES Linnaeus 

 Salutes Linnaeus, Systema naturae, ed. 10, vol. 1, p. 327, 1758. (Type, 

 Balistes vctnla Linnaeus.) 



BALISTES UNDULATUS Mungo Park 



Balistes nndulatus Mungo Park, Trans. Linn. Soc. London, vol. 3, p. 37, 1797. 



115074, Tutuila Island, reef at Alofau, Juno 3, 1939, 1 specimen. 

 115071, Tutuila Island, reef st Pagai, June 4, 1939, L. P. Schullz and Frank 

 Taiga, 2 specimens, 



