74. CICONIIFORMES CHAP. 
The remaining species, often called “ Boobies,” have the whole 
lower jaw and throat bare. Of these S. eyanops, common in the 
South Pacific and ranging through the intertropical seas to the 
Bahamas in summer, is white with sooty-brown remiges, the 
wing-coverts and the lateral portion of the tail being partly of 
the same colour; the bill is yellow, the feet are reddish, and the 
naked parts bluish. SS. lewcogaster, extending from tropical and 
sub-tropical America over the Pacific, Indian, and Atlantic 
Oceans, has the upper parts and chest brown, the remaining 
lower surface. and occasionally the head and neck, white; the 
Fic. 21.—Gannet. Sula bassana. x+. 
bill is yellow, the feet are greenish or yellowish, the bare skin is 
tinged with red or yellow. SS. piscator, also of the intertropical 
seas, resembles S. bassana, but has slate-grey wing-quills, purplish- 
erey bill, reddish feet and naked parts. S. variegata, of the shores 
of Chili and Peru, is dark grey-brown with white head, neck, and 
under parts, and white markings above. S. abbotti, of Assumption 
Island, north of Madagascar, is alhed to S. cyanops. In this 
Family the sexes are alike, while the young are usually dusky with 
white streaks and spots; but those of S. cyanops are white below, 
and those of S. lewcogaster and S. piscator chiefly sooty-brown, with 
1 Cf. Seebohm, Birds of the Japanese Enpire, 1890, p. 212. 
