496 MR. O. SALVIN ON THE AVIFAUNA 
Genus PELECANUS. 
Pelicans are found in all tropical seas; and P. fuscus, the species of the Galapagos, 
is common along the western shores of Central America. A second species (P. moline) 
occurs further to the southward; but its presence in these islands has not yet been 
noticed. 
PELECANUS FUSCUS. 
Pelecanus fuscus, Gm. Syst. Nat. i. p. 570; Sundev. P. Z. S. 1871, p. 125. 
Hab. Galapagos (Sundevail). 
Genus SuLa. 
Gannets are also abundant on the coasts of America, both species found in the 
islands lying off the shores of Central America. On the Peruvian coast a third species 
(S. variegata) is found; but its range seems to be much more restricted than that of 
either of the following birds. 
SULA LEUCOGASTRA. 
Petit Fou, Buff. Pl. Enl. 973. 
Pelecanus leucogaster, Bodd. Tabl. Pl. Enl. p. 57. 
Dysporus leucogaster, Sundey. P. Z. S. 1871, p. 125. 
“ Sula fiber, Linn.” Scl. & Salvy. Nomencl. p. 124. 
Hab. Galapagos (Sundevall). 
In our ‘ Nomenclator’ Mr. Sclater and I adopted Linneus’s name fiber for this species ; 
but on reconsidering the question I think it very doubtful whether this name is really 
applicable to it; as Sundevall suggests (Ann. & Mag. N. H. xix. p. 237, 1847), it more 
probably belongs to the immature of 8. piscator. Boddaert’s name, leucogaster, founded 
on Buffon’s Plate 973, seems to be the first certainly bestowed upon the brown-and- 
white Sula of tropical seas. I therefore follow Sundevall in adopting it. 
SULA CYANOPS. 
Dysporus cyanops, Sundev. Phys. Tidskr. Lund, 1837, pt. 5; Ann. & Mag. N. H. 1847, xix. p. 236; 
et P.Z. 8. 1871, p. 125. 
Hab. Galapagos (Sundevall). 
Accidentally omitted from our ‘Nomenclator Avium Neotropicalium.’ This species 
was noticed off the island of Socorro by Grayson. (Cf. Lawr. Proc. Bost. Soc. N. H. 
xiv. p. 302.) 
Genus Freeara. 
Abundant along the western shores of America within the tropics. Fregata aquila 
swarms in the Bay of Panama, and breeds in vast numbers on Pajaros Island, in the 
Gulf of Fonseca. 
