258 Kansas Academy of Science. 



dark brown, except on belly and at base of bill, which parts are whitish. 

 Length about 20. 

 Nest not seen. 



149. Aythya affinis Egt. Lesser Scaup duck. Migratory, and possibly a 

 resident of the upper Olympic country. 



Description: Similarly plumed as No. 148 above, except that the head is 

 glossed with purple instead of green and that the gray lines on the side are 

 a little more conspicuous. It also differs from the above in its being a 

 smaller bird. Length 16. 



Genus Harelda. 



154. Harelda hyemalis Linn. Old-squaw. Migratory. 



Description: Winter plumage: Dusky, ashy patch on side of head; mid- 

 dle tail feathers, back and breast black; rest of plumage white, shading 

 into pearl gray on sides. Length about 22. 



Genus Histrionicus. 



155. Histrionicus histrionicus Linn. Harlequin duck. A summer visitor, 



visiting even the islands off the coast. It probably nests in the 

 region also. 



Description: This duck is characterized by its having a white collar, a 

 white shoulder patch, a white patch in front of eye, one near the ear, and 

 another running down the side of the crown nearly to the nape; all standing 

 out from bluish- black-colored plumage surroundings. 



Genus Oide-mia. 



Subgenus Oidemia. 



163. Oidemia americana Swains. American scoter. I have seen this bird 

 in July. September, however, is the time they are the most 

 numerous. 



Description: Bill swollen back of nostril; eyes brown; plumage black to 

 sooty, without white markings. Length of bird 17. 



Subgenus Melannetta. 



165. Oidemia deglandi Bonap. White-winged scoter. A summer visitor, 



visiting even the islands off the coast as early as July. Great 

 numbers of these ducks are to be seen on the "lagoon" at LaPush 

 in September. It would seem from the numbers of young that 

 are seen that they breed in the region, but I failed to ever find 

 a nest. 



Description: Eyes white, white eye patch on plumage extending back- 

 ward from the eye taperingly toward the crown; wing speculum white; 

 rest of plumage ranging from black to sooty. Length of bird about 20. 



166. Oidemia perspicillata Linn. Surf scoter. This is a very common 



duck. I have seen it in all seasons of the year. 



Description: Eyes white; bill swollen, white, red and orange yellow in 

 male, black in female; white patch on back of head; triangular white patch 

 on forehead; rest of plumage velvety black in male, sooty black to sooty 

 gray in female. Length of bird about 20. 



