1314 
REPORT OF THE CHIEF OF ENGINEERS. 
81. Fuligula mania (L.), var. atfmis, Eyton.—Lesser Blackhead. 
Like the preceding. 
82. Fuligula collaris (Donovan).— Ring-necked Duck. 
Breeds abundantly in the various lakes. I found the young as late as September 3 
still unable to fly. 
83. Fuligula ferina (L.), var. americana (Eyton).— Redhead. 
Present in the fall, but never, I think, in great numbers. 
84. Fuligula vallisneria (Wils.).—Canvas-back. 
Was told by Mr. Parker that he had shot quite a number of this species about Washoe 
Lake. 
85. Bucephala albeola (L.).—Buffle-keaded Duck. 
In considerable numbers in fall. 
86. Mergus serrator (L.).—Red-breasted Merganser. 
Numerous. 
87. Mergus cucullatus (L.).—Hooded Merganser. 
Quite abundant, but occurring late in fall. 
88. Erismatura rubida (Wils.).—Ruddy Duck. 
Apparently not very common. 
PELECANID^E. 
89. Felecanus trachyrynclms Lath.—White Pelican. 
Only appearing on Washoe Lake in fall, and in small numbers. Said to breed in 
great numbers on Pyramid Lake, to the north. 
GRACULIDiE. 
90. Graculus dilophus (Sw.).—Double-crested Cormorant. 
This cormorant is found on the various lakes in summer. 
LARID.E. 
91. Lams delawarensis Ord.—Ring-billed Gull. 
This gull was found in great numbers on Washoe Lake in September and October. 
During the fall its distribution throughout this region is very general, and wherever 
found it is abundant. 
92. Larus californicus Lawr.—Californian Gull. 
Mingled with the preceding were a few of this species or variety. 
The relationship of these two birds appears not to be thoroughly established yet, 
and in a seiies of eight specimens from Washoe and Tahoe Lakes, I find several in the 
immature plumage which I assign with difficulty. In adult plumage the present bird 
is said to have a larger bill than the preceding species, and to present some distinctive 
points of coloration, especially in its darker mantle. The only adult bird I have agrees 
well with the diagnosis, but iu the case of the immature plumage there appear to be 
no thoroughly reliable distinctive characteristics which will serve to distinguish the 
two species. 
93. Sterna regia Gambel.—Royal Tern. 
Found on Washoe Lake in small numbers late in the fall. 
94. ITydrochelidon fissipes (L.).—Black Tern. 
Seen in small numbers on Washoe Lake in August. None were present iu November. 
COLYMBIDiE. 
95. Colymbus torquatus Brunn. — Groat Northern Diver. 
Present on Washoe Lake in November, where I saw two individuals. Was informed, 
however, that its occurrence here was unusual. Its dispersion overall portions of the 
west in fall and winter appears to be general. 
