FAMILY POMACENTRIDAE — ^WOODS AND SCHULTZ 93 



whitish, on some specimens dark grayish usually a faint light, narrow 

 vertical bar across posterior edge of opercle and 2 faint but usually 

 evident pale extensions from light belly dorsally into brown of sides, 

 the first about even with anus the second vertical from anterior 

 Yi of anal fin; anus black; spiny dorsal fin membranes dusky, soft 

 dorsal usually pale though sometimes light dusky b^ow^l ; anal usually 

 pale basally with a dusky marginal band; caudal pale basally, the 

 middle rays usually dusky, outer rays pale or dusky; pelvics always 

 pale; pectoral pale yellowish, no basal axillary spot. 



Young with a narrow bluish line running from middle of snout 

 along upper margin of eye and along base of dorsal where, as fish 

 grows larger, the stripe breaks up into bluish dots; upper part of 

 caudal peduncle pale silvery or bluish, sometimes bluish or black 

 lines from anterior margin of eye across upper lip. 



Remarks. — The coloration of young specimens (and some larger 

 ones up to 50 mm.) is very similar to that of A. antjerius except that 

 antjerius has a black ocellus in the spiny dorsal and black spot in the 

 soft dorsal ; these are never present in glaucus. 



ABUDEFDUF BIOCELLATUS (Quoy and Gaimard) 



Plates 84, C; 85, D 



Glyphisodon hiocellatus Quoy and Gaimard, Voyage autour du monde . . . 



sur . . . VUranie et la Physicienne, Zoologie, p. 389, 1824 (type locality, 



Guam) . 

 Glyphisodon zonatus Cuvier and Valenciennes, Histoire naturelle des poissons, 



vol. 5, p. 483, 1830 (Coast of New Guinea; Vanikolo). 

 Glyphisodon antjerius Kuhl and Van Hasselt in Cuvier and Valenciennes, 



Histoire naturelle des poissons, vol. 5, p. 481, 1830 (Antjer, Java). 

 Abudefduf zonatus Kendall and Goldsborough, Mem. Mus. Comp. Zool., vol. 



26, p. 297, 1911 (Jaluit). 



SPECIMENS STUDIED 



Bikini Atoll: 14 stations, 453 specimens, 15 to 83 mm. in standard length. 



Eniwetok Atoll: 5 stations, 142 specimens, 20 to 83 mm. 



Rongelap Atoll: 4 stations, 37 specimens, 20 to 60 mm. 



Rongerik Atoll: 4 stations, 23 specimens, 24 to 67 mm. 



Jaluit Atoll: 1 lot, 1 specimen, 69 mm. 



Likiep Atoll: 1 lot, Univ. Washington, 1949, 1 specimen, 55 mm, 



Guam: 9 lots, 20 specimens, 17 to 57 mm. 



Description. — Dorsal fin rays XIII, 13; anal 11,13; pectoral rays 

 ii,16 (rarely 15) ; transverse scale rows from upper edge of gill opening 

 to base of caudal rays 25 to 27 (usually 26), with 2}^ between lateral 

 line and origin of dorsal, 8 or 9 between lateral line and origin of anal; 

 upper part of lateral line with 16 to 19 tubular scales; gill rakers 

 8 or 9+1 + 15 or 16, totaling 24 to 26 (4 counts). 



