NORTHERN TIT. 217 



of P. horealis, as compared witli Yarrell's of P. 

 palustris, in inches: — P. horealis, length four and nine 

 tenths, carpus to tip two and three fifths, tail two and 

 two fifths, tarsus three fourths, beak from gape one 

 half, beak from forehead, five lines and a half. P. 

 palustris, length four and a half, carpus to tip two 

 and three eighths. 



The sexes do not differ in size or plumage. 



Mr. Wheelwright has kindly sent me a nest containing 

 nine eggs. The nest is built of the under bark of the 

 alder, and is loosely made, and slightly lined with 

 hair; no moss or feathers. The eggs are very similar 

 to those of palustris, but the spots are darker and 

 not so thick. 



