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 July, 1912 PRESENT STATUS OF THE COLORADO CHECK-LIST OF BIRDS 151 Planesticus migratorius. Omitted by Sclater, who considers all Colorado robins as propinquus. It is undoubtedly true that all the breeding robins of Colorado are this form, yet a specimen. taken April 13, 1912, at Crook, Colo- rado, and sent to the Biological Survey, proves to be the eastern form, which, therefore, is to be retained in the State list (CoN)oR, xIv, 1912 154). In addition to the. species named above, there are several more new birds for Colorado that were not included in either list. Anas rubripes. The black duck has had a curious history in Colorado ornithology. Originally entered in the list by Ridgway in 1874 based on a spec- imen taken by Aiken, its position was unquestioned until in 1900 Cooke haz- arded the guess, on geographical grounds, that the Colorado birds woul I prove to be ,4has [ulvigula maculosa. A specimen taken November 6, 1907, near Loveland, and now in the Natural History Museran at Denver, is this form (Auk, xxvn, 1911, 490). But, nevertheless, ,4has rubripes must also be re- tained in the list, for as already recorded (Auk xxwi, 1910, 451), a black duck taken about November 13, 1904, at Loveland has been identified at the Biological Survey as rubripes. Florida caerulea. One was taken September 14, 1910, by E. P. Walker at Montrose. Ionornis martinica. One taken June 17, 1911, by W. F. Doertenbach at Florence. Tryngites subruficollis. Taken at Barr August 25 and September 4,' 1910, by L. J. Hersey (Auk, xxviIi, 1911, 490). Calcarius lapponicus lapponicus. The original lists of Colorado birds contained this form, which was later changed to Calcarius .lapponicus alasensis, which is the common bird of the state. It will be necessary now to restore lapponicus to the list, for a specimen of the eastern form was taken December 28, 1909, at Barr by L. J. Hersey, and has been identified by Oberholser (Condor, xIv, 1912, 108). Telmatodytes palustris iliacus. As already recorded by Betts (Auk xxvi, 1911, 118), a specimen of this form was taken October 10, 1910, at Boulder, and one taken at Skinner's, E1 Paso County, January 15, 1908, is considered by Oberholser to belong to this form. Ixoreus naevius. The same observer has recorded (Auk xxvI, 19101 218) a specimen seen at Boulder December 5, 1909. Hylocichla guttata sequoiensis. A lot of hermit thrushes sent by L. J. Hersey to the Biological Survey for identification contain two specimens of .this form taken at Granby October 7, and at Holly May 16, 1911. It is therefore added to the Colorado list as a rare migrant, both spring and fall (Condor xIv, 1912, 108). SUMMARY The Sclater (1912) list of Colorado birds contains 395 species. From the list are to be withdrawn as more or less doubtful seven species--Phalaenoptilus nuttalli nitidus. Otocoris alpestris ethymia, ,4gelaius phoeniceus, ,4stragalius psaltria arizonae, _dstragalinus psaltria mexicanus, Lo.ria curvirostra stricklandi, and P.rotonotaria citrealeaving 388 species. To these are to be added fifteen species .4nas rubripes, Florida caerulea, Ionornis martinica, Phalaropus [uli- carius, Trynites subru[icollis, ,4egialitis meloda, Otocoris alpestris praticola, ?tgelaius phoeniceus neutralis, Calcarius lapponicus lapponicus, Junco hyemalis oreganus, Junco hyemalis montanus, Telmatodytes palustri.v. iliacus, Ia'oreus