872 U. S. P. R. R. EXP. AND SURVEYS ZOOLOGY GENERAL REPORT. 
List of specimens. 
Locality. 
Whence obtained. 
Orig. 
No. 
Collected by— 
Stretch 
>f wings. 
Wing. 
Coast of New York 
Cab. of Geo. N. Lawrence 
1025 
J. Akhurst 
38. 00 
19. 25 
Atlantic ocean 
S. F. Baird 
Dysporus, Illiger. 
SULA FIBER, (Linnaeus.) 
Booby Gannet. 
Pelecanus fiber, Linn. Syst. Nat. 1766, 218. 
Pelecanus sula, Linn. Syst. Nat. I, 1766, 218, 7. 
Dysporus sula, Illiger, Prod. 1811, 279. — Bon Cons. Av. II, 1855, 164. 
Sula brasilicnsis, Spix, Av. Bras. 1824, tab. 107. 
Sula fusca, Vieill. Gal. des Ois. 1825, tab. 277.— Bon Syn. 1828, No. 360.— Nutt. Man. II, 1834, 500.— Add Oru. 
Biog. Ill, 1835, 63.— Ib. Syn. 1839, 311.— Ib Bird's Am. VII, 1844, 57; pi. ccccxxvi. 
Sp Ch. — Head, neck, and upper plumage brown ; breast and abdomen white; bill and naked part around the eye and on the 
the throat yellow ; wings brown ; first and second primary equal and longest. 
Adult. Head, entire neck, back, wings, and tail dusky brown ; under plumage and lower tail coverts pure white ; bill bright 
yellow, flesh colored towards the end; naked space around the base of the bill yellow; iris white ; tarsi and feet, with their 
webs, pale yellow ; claws white. 
Length, 31 inches; wing, 16.50; bill, 3.90; tarsi, 1.70, tail, 8.50. 
The female is similar in plumage to the male, but smaller. 
The young are of an uniform greyish brown, the lower parts being rather lighter; the bill dusky; the tarsi and feet dull 
yellow. 
Hab. — Gulf of Mexico. Atlantic coast from Georgia southward. 
The Booby Gannet is found only on our southern coast, where they collect at their breeding 
places in large numbers ; their nests are built on low trees or bushes. Their method of pro- 
curing food is similar to that of the common species. 
List of specimens. 
Locality. 
Whence obtained. 
Orig. 
No. 
Collected by— 
Stretch 
of wings. 
Wing. 
S. F. Baird 
Cab. of G. N. Lawrence 
1026 
J. J. Audubon 
30. 00 
15.00 
Do 
