Gould, P. J. 1963 Phaethon lepturus 1 September.6--Pacific Ocean, 2nd day out Oahu, Hawaiian I. 0757. Two birds flew over ship in company with each other and both were collected. Number 0354 (Field number) Imm. ♂ [7 mm.] wt.=333 gms.; wing=150 mm; tail=332 mm.; cul.=44.7 mm.; tarsus=21.5 mm.; midtoe=34.4 mm. bill lgight greenish yellow with black hash mark from nostril to base; legs whitish with pale blue-gray areas. Outer 4/5 front black. Iris very dark, mouth lining whitish. Light fat. Molt: tail: right deck=1/3 in shaft. est new except neck, right part in sheath wing: 8th primary 1/2 length 8th primary covert in sheath 5th primary covert 1/2 grown, trace of sheath 6th secondary and covert in sheath body: very light general body molt Number 0355 (field number) Imm. ♂ [7.5 mm.] wt.=339 gms.; wing=252 mm.; tail=316 mm.; cul.=46.4 mm.; tarsus=20.1 mm.; midtoe=37.7 mm. Bill very pale bluish yellow with black hash mark from nostril to base. Legs whitish with pale bluish gray areas, outer 4/5 foot black, iris very dark, mouth lining whitish. Light fat. Molt: tail: deck pair=1 old and 1 in sheath two outer look newest, next 3 pair notched wings: 8-11 old, rest new body: light molt on breast and flanks