=Thalassogeron chrysostomus culminatus= (Gould) becomes =Thalassarche culminata culminata= (Gould), because _Diomedea chrysostoma_ Forster is considered not with certainty identifiable. (_Cf._ Loomis, Proc. Calif. Acad. Sci., ser. 4, II, pt. II, No. 12, April 22, 1918, p. 85.)
=Fulmarus rodgersi= Cassin becomes =Fulmarus glacialis rodgersii= Cassin, because not specifically distinct from _Fulmarus glacialis_. (_Cf._ Loomis, Proc. Calif. Acad. Sci., ser. 4, II, pt. II, No. 12, April 22, 1918, pp. 88-90.)
=Thyellodroma cuneata= (Salvin) becomes =Thyellodroma chlororhyncha= (Lesson) (_Puffinus chlororhynchus_ Lesson, Traité d’Ornith., 1831, p. 613, no locality), because it is only a light color phase of the latter. (_Cf._ Loomis, Proc. Calif. Acad. Sci., ser. 4, II, pt. II, No. 12, April 22, 1918, pp. 141-145.)
†=Priofinus= Hombron and Jacquinot. Recognized as a genus. (_Cf._ Loomis, Proc. Calif. Acad. Sci., ser. 4, II, pt. II, No. 12, April 22, 1918, pp. 59, 108.) The only species therefore should be called =Priofinus cinereus= (Gmelin).
†=Pterodroma gularis= (Peale). _Procellaria gularis_ Peale, U. S. Explor. Exped., VIII, 1848, p. 299 (Atlantic Ocean, lat. 68° S., long. 95° W.). Recorded from Alaska. (_Cf._ Bent, ‘The Auk,’ XXXV, No. 2, April, 1918, p. 221.)
=Æstrelata gularis= Peale becomes =Pterodroma inexpectata= (Forster) (_Procellaria inexpectata_ Forster, Descript. Anim., 1844, p. 204, Antarctic Ocean), because the latter is identical and of earlier date. (_Cf._ Loomis, Proc. Calif. Acad. Sci., ser. 4, II, pt. II, No. 12, April 22, 1918, pp. 104-105.)
=Pelecanus californicus= Ridgway becomes =Pelecanus occidentalis californicus= Ridgway. (_Cf._ Oberholser, ‘The Auk,’ XXXV, No. 1, Jan., 1918, p. 62.)
=Aristonetta= Baird, Rep. Expl. & Surv. R. R. Pac., IX, 1858, p. 793 (type, _Anas valisineria_ Wilson). Raised to generic rank. (_Cf._ Oberholser, Proc. Biol. Soc. Wash., XXXI, June 29, 1918, p. 98.) The only species therefore becomes =Aristonetta valisineria= (Wilson).
=Creciscus coturniculus= (Ridgway) becomes =Creciscus jamaicensis coturniculus= (Ridgway). (_Cf._ Oberholser, ‘The Auk,’ XXXV, No. 1, Jan., 1918, p. 63.)
†=Numenius americanus occidentalis= Woodhouse. _Numenius occidentalis_ Woodhouse, Proc. Acad. Nat. Sci. Phila., 1852, p. 194 (near Albuquerque, New Mexico). Revived as a subspecies. (_Cf._ Oberholser, ‘The Auk,’ XXXV, No. 2, April, 1918, p. 191.) Range: southwestern Canada and the northwestern United States, south in winter to Mexico and Jamaica.