496 ME. 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. molinae) 

 occurs further to the southward; but its presence in these islands has not yet been 

 noticed. 



Pelecanus fuscus. 

 Pelecanus fuscvs, Gm. Syst. Nat. i. p. 570; Sundev. P. Z. S. 1871, p. 125. 

 Hah. Galapagos (Sundevall). 



Genus Sula. 

 Gannets are also abundant on the coasts of America, both species found in the 

 islands lying oflF 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. 



SUIA LEUCOGASTEA. 



Petit Fou, Buff. PI. Enl. 973. 

 Pelecanus leucogaster, Bodd. Tabl. PI. Enl. p. 57. 

 Dysporus leucogaster, Sundev. P. Z. S. 1871, p. 125. 

 " Sula fiber, Linn." Scl. & Salv. Nomencl. p. 124. 



Hab. Galapagos {Sundevall). 



In our ' Nomenclator' Mr. Sclater and I adopted Linnseus's n^xae 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 S. 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. S. 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 Fregata. 



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. 



