SECOND APPENDIX. 
Stnce the publication of the Third Edition of the Kry, in 1887, the American Orni- 
thologists’ Union has continued its active work upon North American Birds. A Committee 
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 — 
I. Additions; I. 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 1859 and 1890 support the stand 
taken by the Kry Lisr of 1887 against the Union List of 1886 ; some are merely synony- 
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 Kry 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 furtner 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 Kry as additions or emendations are printed in thick type. 
E. C. 
SMITHSONIAN INsTiITUTION, WASHINGTON, D. C., April, 1890. 
No. 36 a, p. 261. Polioptila caerulea ob- 
scura, named by Ridgway in 1885 (Pr. U. S. 
No. 18 a, p. 248. Turdus sequoiensis, 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. Harporhynchus rufus longi- 
rostris becomes H. longirostris sennetti, Ridg- 
way, Pr. U. S. Nat. Mus., Aug. 1888, p. 
506. 
No. 28, p. 258. The Committee decline 
to recognize Sialia mexicana anabele of An- 
thony, Proc. Cala. Acad. Sci., 2d ser., II., 
Oct. 1889, p. 79, deeming the ascribed char- 
acters insufficient. 
Nat. Mus., 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. Lophophanes bicolor 
texensis, which I recognized in 1887, is con- 
firmed under the original name, Parus bicolor 
texensis. 
No. 49 a, p. 267. Parus hudsonicus stoneyi 
is a new subspecies described from the Kowak 
River in Alaska as P. stoneyi by Ridgway, 
