192 University of California Publications in Zoology. (Vou.9 
one hundred and fifty to two hundred more were merely roosting 
there. Only breeding birds were seen during the day, but about 
7 o’cloeck the other black non-breeders began to arrive in bunches 
of from four to seven. They left about 4 o’clock in the morning. 
The nests were attached to the sloping marble just before it 
dropped off into salt water, and were from fifteen to seventy-five 
feet above the high-tide mark. Most of the nests were not fin- 
ished, but four contained one ege each. The nests were com- 
pactly built of moss gathered nearby, and not of seaweed. The 
white patches on the flanks and the two crests were very notice- 
able in the breeding birds, and most of the males also had the 
white, slender plumes on their necks. The non-breeders had no 
white flank patches.”’ 
The three skins of Phalacrocorax pelagicus secured measure 
as follows: 
Depth of 
No. Sex Locality Date Wing Tail Culmen bill 
53 ro) Glacier Bay July 5 280 160 50 We 
36 io) Windfall Hbr. May 10 260 150 46 11 
52 2 Glacier Bay July 5 247 165 47 11 
After comparison with all available material, including some of 
that in the U. S. National Museum, I must admit my inability to 
find grounds for recognizing a race robustus. As Coues states 
(Key, 5th ed., 1903, p. 967), it seems to be “‘an error to attempt 
to separate Alaska birds from pelagicus.’’ On the other hand 
resplendens of the California coast is readily distinguishable, and 
the feeling in my mind is that the latter is specifically distinct. 
At any rate, there is no material at hand showing intergradation. 
Mergus americanus Cassin. American Merganser. 
Mr. Littlejohn’s notebook presents the following information 
in regard to this merganser: ‘*‘When our party reached Mole 
Harbor, Admiralty Island, April 16, small floeks of six or eight 
were constantly passing back and forth about the creek mouths. 
At Windfall Harbor three days later they had appeared mostly 
in pairs and sought the waters of the larger streams as far up 
as the ice had melted away. Not much was learned of their 
nesting habits, although they evidently breed in the dense for- 
ests alone the larger streams. According to statements of the 
