(9 - d~ 
S--<^rC-^ 
S\ 
d 
7 , ^V, (2- Orvo^i 
6 . X^r 2 s..&,£_y, /VirS- 
'/•' 2.9 
Albinism and Melanism in North 
American Birds* Ruth.ven Deane, 
/ U^Ol 
‘ft O- fusca, 
tu-~T C c*.* A ^ g ,, 
BuILN.O.O. 1, April, 1876, p. 23 
Oidemia fusca. /o t (Jb- 
Distance between nostril and loral feathering considerably greater — at 
nearest point — than in deglandi or stejnegeri (not so wide, however, as 
length of nostril), this distinction applying also to the female. Maxilla 
176 
Trumbull on the Scoters. 
'Auk X 
April 
\W 
swollen noticeably at sides of base between corner of mouth and nostril, 
the bill differing in this respect from those of deglandi and stejnegeri. 
Though an approximation to this protuberance is sometimes observable 
in the other species, it is never so prominent and bunch-like. Lateral 
edges of maxilla somewhat more nearly parallel than in deglandi, and 
about as in stejnegeri. Basal part ofculmen noticeably elevated, but not 
nearly so prominently as in deglandi , and incomparably less than in 
stejnegeri, rising very gradually and evenly over the nostrils. Anterior 
extremities of frontal and loral feathering (in both male and female) 
about equally advanced . 1 
