100 BULLETIN 214, UNITED STATES NATIONAL MUSEUM 



Pseudoscarus cyanognathos Bleeker, Atlas ichthyologique . . . , vol. 1, p. 32, 



pi. 11, fig. 2, 1862. 

 Callyodon lazulinus Jordan and Seale, Bull., U. S. Bur. Fish., vol. 25, (1905), 



p. 333, fig. 65, 1906 (tj'pe locality: Apia and Pago Pago, Samoa; holotype 



USNM 51758; paratypes USNM 51826, 51832, and 51837).— J. L. B. Smith, 



Rhodes Univ. Ichthy. Bull. No. 1, p. 13, pi. 42,k, 1956, (western Indian 



Ocean south to lat. 15° S.). 

 Callyodon elerae Jordan and Seale, Bull., U. S. Bur. Fish., vol. 26, (1906), p. 31, 



fig. 11, 1907 (type locality: Cavite, Philippine Islands). 

 Pseudoscarus pectoralis Giinther, Journ. Mus. Godeffroy, vol. 8, p. 324, pi. 158, 



1909. 



This species is characterized by its green teeth when adult; the 

 dark coloration dorsoanteriorly, abrupty changing to pale below a 

 horizontal line through lower edge of orbit; a blue streak, extending 

 from middle of snout past lower edge of eye, that separates darker 

 color above from yellowish color below; the body posteriorly abruptly 

 pale behind base of dorsal spines VII or VIII; pectoral rays ii,12; 3 or 

 4 scales in ventral (third) row on cheek; anal fin broadly blue distally, 

 pink basally; dorsal fin blue distally, broadly pink basally. This 

 species resembles S. oviceps but lacks the 2 or 3 yellow bars on an 

 otherwise dark back. 



I have studied specimens in lots from the following localities: 

 Philippines, 21 lots; Celebes, 1; Ifaluk Atoll, 1; and Dutch East 

 Indies, 1. 



Scarus dussumieri Cuvier and Valenciennes 



Plate 20a, b 



Scarus dussumieri Cuvier and Valenciennes, Histoire naturelle des poissons, vol. 



14, p. 252, 1839 (type locahty: Seychelles; three types examined in Mus. Nat. 



Hist. Nat. Paris, one under Cat. No. 1719, from Zanzibar, and two under 



No. 1720 from the Seychelles). 

 Pseudoscarus dussumieri Bleeker, Atlas ichthyologique . . . , vol. 1, p. 46, pi. 8, 



fig. 1, 1862. 

 f Callyodon mus J. L. B. Smith, Rhodes Univ. Ichthy. Bull. No. 1, p. 13, pi. 41, 



B, 1956 (type locality: Shimoni, East African Coast). 

 Callyodon speigleri J. L. B. Smith, Rhodes Univ. Ichthy. Bull. No. 1, p. 14, 1956 



(type based on Pseudoscarus dussumieri Bleeker, pi. 8, fig. 1, 1862). 



This species is characterized by having 6 median predorsal scales, 

 3 rows of scales on the cheek, the ventral (third) row with 1 to 3 scales 

 (3 in figure of C. mus Smith); pectoral rays ii,12; teeth white; dorsal 

 fin edged with blue distally and basally, the central K plain pink; anal 

 fin similar but the central pink portion occupies }^ to % of fin. 



The specimens from the tropical West Pacific have ii,12 pectoral 

 rays in 16 counts whereas the three types of Cuvier and Valenciennes, 

 have ii,13 pectoral rays in 5 counts and ii,12 in another. This may 

 indicate a subspecific difference between the western Indian Ocean 

 and the West Pacific, but we lack sufficient specimens to establish 

 in well substantiated detail the differences between them. 



