SECOND APPENDIX. 



Since the publication of the Third Edition of the Key, in 1887, the American Orni- 

 thologists' Union has continued its active work upon North American Birds. A Committ(^e 

 of the Union published in 1889 a " Supplement to the Code of Nomenclature and Check-list 

 of North American Birds adopted by the American Ornithologists' Union " (New York, 

 pp. iv., 23). The same Committee published in January, 1890, a "Second Supplement ' 

 (The Auk, VII., No. 1, pp. 60-66). Each of these Supplements treats briefly of 

 1. Additions; II. Eliminations; III. Changes of Nomenclature; the Second Supplement 

 also of — IV. Species and Subspecies considered as not entitled to recognition (being a few 

 published in 1889 which the Committee disapprove). 



Some of the changes made in these two Supplements of 1889 and 1890 support the stand 

 taken by the Key List of 1887 against the Union List of 1886 ; some are merely synouy- 

 matic ; others are actual additions to our knowledge of North American Birds. 



The foregoing " Appendix " (pp. 865-895 of the Key), shows in double columns the 

 differences between the Key List of 1884, and the Union List of 1886, and introduces such 

 changes as I saw fit to make in the third edition of 1887. 



The present " Second Appendix" notes every further change reported by the Union's 

 Committee from 1887 to January 1890 inclusive. In most cases I prefer to express no 

 individual opinion, for the judgment of the Committee is presumed to be final so far as 

 present evidence is concerned. But the names of species and subspecies which I am fully 

 prepared to admit to the Key as additions or emendations are printed in thick type. 



Smithsonian Institution, Washington, D. C, April, 1890. 



E. C. 



No. 13 a, p. 248. Turdus aequoiensis . An- 

 thony, Proc. Cala. Acad. Sci., 2d ser., II., 

 June, 1889, is deferred for final action by the 

 Committee, owing to insufficient evidence. 



No. 18, p. 251. Harporhyndius rufus lonr/i- 

 rostris becomes H. lo>n/irostris sennetti, Ridg- 

 way, Pr. U. S. Nat. Mus., Aug. 1888, p. 

 506. 



No. 28, p. 258. The Committee decline 

 to recognize Sialia mexicuna anabelce of An- 

 thony, Proc. Cala. Acad. Sci., 2d ser., TI., 

 Oct. 1889, p. 79, deemini; the ascribed char- 

 acters insufficient. 



No. 36 a, p. 261. Poliopiila ccerulea ob- 

 scura, named by Ridgway in 1883 (Pr. U. S. 

 Nat. ]\Ius., v., p. .535), is now recognized by 

 the Committee, and assigned a local habita- 

 tion in California, Arizona, and western 

 Mexico. 



No. 40 bis, p. 866. Lnphophanes bicolor 

 texensis, which T recognized in 1887, is con- 

 firmed under the original name, Parus bicolor 

 texensis. 



No. 49 (?, p. 267. Parus hudsonicus stonei/i 

 is a new subspecies described from the Kowak 

 River in Alaska as P. sfonri/i by Ridgway, 



