FISHES OF THE PHILIPPINE AND ADJACENT SEAS 247 



very narrow grayish edge and whitish basal band expanding on pos- 

 terior rays nearly to their ends. Caudal pale brownish, with sub- 

 marginal pale crescentic band. Caudal spine pale and in pale groove. 

 Pectoral pale olivaceous. Ventral neutral dusky, with lower front 

 margin narrowly whitish. 



East Indies, Phihppines, Micronesia, Melanesia, Polynesia. A 

 strongly marked species, with somewhat similar color pattern of 

 Hepatus achilles, but without its red caudal blotch. 



8940. Atulayan Island. January 18, 1909. Three examolps 158 to 20.5 mm. 



8954. Between Paron Point and Jesus Point, Luzon. June 21, 1909. Length 

 173 mm. 



Two examples. Buena Vista, mouth of river, Guimares Islands. June 14, 1909. 

 Length 51 to 60 mm. 



16045. Cabugan Island, Hinunangan Bay, Leyte. July 20, 1909. Length 130 

 mm. 



256. Caxisigan. December 29, 1909. Length 108 mm. 



11866. Gubat, Sorsogon, Luzon. June 23, 1909. Length 113 mm. 



15644. Rapu Rapu Island. June 22, 1909. Length 218 mm. 



6896. Santo Domingo. November 7, 1908. Length 170 mm. Purplish gen- 

 erally, blackisli about head. Preorbital broadly white, which broader than eye 

 above. Gill opening with yellowish shades. Caudal peduncle becoming yel- 

 low, spine bright sulphur. Dorsal bright sulphur basally, widens to include 

 most of last ray; narrow blue margin on spinous fin, becomes white on rayed 

 fin; orange-red bar begins on last spine and extends under narrow black band 

 to third from last ray where fading dusky; rest of fin dark. Anal like dorsal 

 but without orange. Caudal whitish, entirely surrounded by blue white 

 band and central area more dusky with yellow bar on front portion. Pectoral 

 rays black, membranes hyaline v/ith semicircular basal blotcli. Ventral black, 

 except narrow blue fronts, which become white on tip of first ray. Vent 

 yellow. These examples differ a little in that the usual pale crescent from 

 below the eye extends down and forward to maxillary to embrace pale band 

 across chin. Also pectoral with pale base and colors on dorsals and anals 

 greatly contrasted with very distinct whitish edges. 



6959, 6960. West coast of Sabtan Island. November 8, 1908. Length 133 to 

 166 mm. 



8020. Reefs in Apra Bay, Guam. November 19 to 21, 1907. Length 124 mm. 



15397 U.S.N. M. Honolulu. Dr. T. H. Streets. Length 37 to 98 mm. 2 

 examples. As Acanthurus blochii. 



52505 U.S.N.M. Samoa. Bureau of Fisheries. Length 135 to 195 mm. Three 

 examples. 



17973 U.S.N.M. Honolulu. Dr. T. H. Streets. Length 287 mm. Now uni- 

 form brown. Caudal well emarginated. As Acanthurus blochii. 



52495 U.S.N.M. Apia, Samoa. Bureau of Fisheries. Length 30 to 270 mm. 

 Six examples. As Hepatus matoides. 



55630 U.S.N.M. Jolo, Philippines. Dr. E. A. Mearns. Length 232 mm. 



HEPATUS ACHILLES (Shaw) 



Acanthurus achilles Shaw, Gen. Zool., vol. 4, 1803, p. 383. No locality. — 

 Valenciennes, Hist. Nat. Poiss., vol. 10, 1835, p. 218 (no locality). — 

 GuNTHER, Cat. Fish. Brit. Mus., vol. 3, 1861, p. 340 (China); Journ. 

 Mus. Godcffroy, vol. 4, 1875, p. 115, pi. 71, fig. B (Samoa, Polynesia).— 



