Dr. Ernst J. O. Hartert stated that the length of wing in males 
from the island of Guam measures 118-131 mm. (usually 125-128 mm.); 
the birds from the island of Saipan have higher bill and wings measure 
122-133 mm; these two birds can not be separated from each other 
even subspecifically. The birds from Pelew and from Ruk Islands have 
a trifle shorter wing. Wiglesworth also found that the difference be- 
tween the western and eastern birds are as follows : 
“ Examples from Uap are bigger than those of Ualan, but are other- 
wise similar.” 
It was with Mr. N. Kuroda's help that enabled me to do this work 
for which my best thanks are due. It is with pleasure that I dedicate 
the subspecies in honor of him. 

