468 APPENDIX. 



The nest of BicknelTs Thrush does not differ essentially from 

 that of T. swainsonii, in either construction or position. The eggs 

 are greener and more finely spotted than those of swainsonii. 



PARUS BICOLOR. Tufted Titmouse. 



This Southern species, of which a bare mention was made by 

 Mr. Minot (see foot-note on page 61 of this edition, or Appendix, 

 page 443, of the original edition), is a rare and probably only ac- 

 cidental visitor to New England. It was long since accredited to 

 New Hampshire by Belknap (History of New Hampshire, Vol. Ill, 

 1792, p. 173), and to Connecticut by Linsley (Am. Jour. Science, 

 Vol. XLIV, 1843, p. 255), but the former record is, to say the least, 

 open to grave suspicion. No doubts, however, attach to the in- 

 stances given by Dr. Merriam of a specimen shot, February 27, 

 1872, and another seen in January, 1874, near Lyrne, Connecticut, 

 by Mr. Josiah G. Ely, and of a bird taken near Hartford, Connecti- 

 cut, by Dr. D. Creary (Merriam, Rev. Birds Conn., 1877, p. 9). 



HELMINTHOPHILA LAWRENCEI. Lawrence's Warbler. 



This is a " hypothetical " species, suspected to be a hybrid be- 

 tween H. pinus and H. chrysoptera, or to represent merely a color 

 phase of the latter. It has the throat and ear coverts black (gray 

 in the female) precisely as in chrysoptera, but the upper parts are 

 bright olive green, the wing bands white, and the general coloring 

 of the under part rich yellow as in pinus. If a hybrid, it is, like 

 its near ally, H. leucobronchialis, an exception to the usual rule 

 that hybrids are infertile, for both forms have been found breeding, 

 and both are believed to mate indiscriminately with each other, as 

 well as with pinus and chrysoptera. H. laiurencei, although 

 nowhere at all common, is now known to be a regular summer 

 visitor to southern Connecticut, where, especially in the region about 

 New Haven, several specimens have been taken in a single season. 



DENDROICA AUDUBONI. Audubon's Warbler. 



Accidental. A young male taken by Mr. M. Abbott Frazar at 

 Watertown, Massachusetts, November 15, 1876 (cf. Frazar, Bull. 

 N. O. C., Vol. II, Jan., 1877, p. 27) remains the only known New 

 England specimen ; the recent record by Mr. A. H. Verrill (Auk, 

 Vol. X, July, 1893, p. 305) of two adult males, said to have been 

 shot by him at New Haven, Connecticut, in May, 1893, being gen- 

 erally discredited. 



