PUBLISHER'S NOTE. 
In putting- the following- paper through the press the Society 
has been left without assistance from the authors in the correction 
of proof and preparation of index. Prof. Kumlien's lamented death 
last winter is a source of sorrow to his many friends. Mr. Hollister 
has been absent from the state since last May, spending* the season 
in Alaska, where he has been engaged in investigations for the 
United States Biological Survey. The manuscript received the last 
touches from his hands early in March. The 'delay in publication 
has been due to many causes, not the least among which has been 
the lack of time on the part of those upon whom the duty of 
supervising the work of publication has fallen. The greatest pains 
have been taken to secure accuracy in printing. Some errors, which 
have been detected too late for correction are pointed out in the 
list of errata following this note. 
The expense of publication has been shared by the trustees of 
the Milwaukee Public Museum, whose generous co-operation is 
hereby gratefully acknowledged. 
Attention is called to the price list of the publications of the 
Society, printed on the preceding page. 
ERRATA. 
Page 52 for Sqatarola read Squatarola. 
Page OO for EVENING GROSBECK read EVENING GROSBEAK. 
Page 127 for Hyloeiehia read Hylocichla. 
iv 
