APPENDIX. 585 
e’. Color of head and neck (uniform dark sooty brown in female, grayish brown 
or drab fading into white on anterior part of head in male) uniform in 
color with the back. Hab. Pacific coast of America and adjacent islands, 
from the Gulf of California to the Galapagos Archipelago. 
115.1. S. brewsteri Goss. Brewster's Booby. 
(10.) Page 92, under Anas fulvigula: 
134a, Anas fulvigula maculosa (SENN.). Mottled Duck. 
Similar to A. fulvigula, but cheeks streaked with brown, instead of being 
plain buff; speculum metallic purple instead of green; the general effect of the 
coloration mottled rather than streaked, and the lighter markings in general 
“pale buff or isabella color” instead of a rich, deep buff. Hab. Northern Mexico 
(Chihuahua, etc.) and Texas, north to Kansas (and Utah ?). 
(11.) Page 127, a. Ardetta is now recognized as a good genus, and the North 
American species therefore known as A. exilis and A. neoxena. The latter has 
become better known, most of the specimens taken having been found in 
Ontario. The sexes of this species, which is exceedingly distinct, appear to 
be essentially alike in coloration. 
(12.) Pages 128, 129, Genus ARDEA Linnaus. 
The examination of eight additional specimens of Ardea wuerdemanni ren- 
ders necessary a revision of the diagnosis of this form and its allies, as follows: 
é. Color nearly uniform bluish gray above, the lower parts usually striped with 
black and white (sometimes entirely white). 
jf’. Adult with head entirely white, except (usually) black or dusky streaks 
on forehead, or (very rarely) a blackish patch on sides of crown or 
occiput, beneath edge of crest; shoulder-knots broadly striped with 
white, and (usually) tinged with rusty ; lowermost wing-coverts with 
more or less of their outer webs white; outer web of exterior tail- 
feather with a large white wedge-shaped patch on basal portion; 
lower parts white (the anal region entirely so), the breast and belly 
(medially) usually striped or streaked with black, dusky, or brownish 
gray; gray of upper parts of an ashy tint; length 48.00-50.00, wing 
18.75-21.00 (19.39), tail 6.25-8.00 (7.21), culmen 5.75-6.70 (6.14), 
depth of bill at base 1.20-1.30 (1.24), tarsus 7.30-8.75 (7.80), naked 
portion of tibia 4.50-5.50 (4.99), middle toe 4.20-5.20 (4.63). Had. 
Southern extremity of Florida, chiefly (?) in the vicinity of Cape 
Sable, and on Florida Keys; Cape Florida (?); Jamaica (?); acci- 
dental in southern Illinois (Mount Carmel, Sept. 11-22, 1876). 
—. A. wuerdemanni Bairp. Wiirdemann’s Heron. 
1 Sula brewsteri Goss, Auk, v. July, 1888, 242. 
2 Anas maculosa SenNneTT, Auk, vi. July, 1889, 263.—Anas fulvigula maculosa A. 0. U. Com., Auk, vii. 
Jan. 1890, 61. 
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