APPENDIX. 



501 



Harporhynchtus redivivus. 



Harporhynchus redivivus (I, iS). The accompauving cut, showing the 

 extreme anatomy of the species, was omitted in its proper place. 



Mimus polyglottus (I, 49). Mr. C. E. Aiken has obtained this species in 

 El I'lisu Ci unity, t'lilnrado. 



Saxicola cenanthe (I, GO). Mr. C. J. Hampton obtained a specimen of this 

 bird at Junius, Seneca Coimty, N. Y., on the 9th of September, 1872. Professor 

 Newton suggests, by letter, as an interesting problem, the route by which this 

 species reaches Alaska in its migi-ations. It is not known to occur near the Sea of 

 Ochotsk, has not been found on the Lower Amoor, and probably does not occur 

 farther eastward than the Baikal Mountains. It has never been noticed in Japan 

 or on the coast of China. It must therefore be very nearly certain that it can- 

 not take that way to Alaska. Sundeval states that it is found in Kamtschatka, 

 but this Mr. Newton questions, as no authority is given for this statement. The 

 only alternative is to assume a route via 

 Greenland, in this, perhaps, in a measure in- 

 dorsing Petermann's suggestion that Green- 

 land extends across the pole nearly to the 

 Asiatic coast and to Alaska. 



Sialia mexicana (I, 65). This species 

 has l)ecn obtained in Western Iowa by Mr. 

 Atkinson. 



Regulus calendula (I, 75). We pre- 

 sent the outlines of bill, feet, wings, and tail, 

 omitted in their proper place. 



Polioptila caerulea (1, 78). Mr. Aiken has taken this species in El Paso 

 County, Colorado. Dr. Cooper informs me that he found it quite nmuerous 

 near Auburn, Placer County, Cal., May 11, 1870, apparently migrating north- 

 ward. In the following December he saw one near San Francisco. From this 

 he infers that it winters much farther to the north in that State than it does 

 east of the Rocky Mountains, and that the individuals occurring in Guatemala are 

 eastern birds. He also states that it is the prevailing and probably the only form 



Regulus calendula. 



