244 SNODGRASS AND HELLER 



14. PHAETHON ^ETHEREUS Linna-us. 



Phaethon athereus LINNAEUS, Syst. Nat., ed. x, i, p. 134, 1758. RIDGWAY, 

 Proc. U. S. Nat. Mus., xix, p. 600, 1896. ROTHSCHILD AND HAR- 

 TERT, Novit. Zool., vi, p. 1 80, 1899. 



Range. Tropical seas in general. 



We observed this species all the way from Guadalupe Island off 

 Lower California to the Galapagos Archipelago. At the latter locality 

 we found it most abundant at Wenman, Culpepper, Hood and Brattle, 

 but nowhere did we find it nesting. The Harris expedition report it 

 as nesting on the eastern end of Hood Island in October. 



This is the only species of Phaethon that has been observed at the 

 Galapagos Islands, although P. rubicaudus is rather common in the 

 eastern Pacific north of the Galapagos. 



Family SULHXE. 



Genus Sula Brisson. 



Sula BRISSON, Ornithologist, vi, p. 495, 1760. 

 Range. Temperate and tropical seas. 



15. SULA VARIEGATA Tschudi. 



Dysporus variegatus TSCHUDI, Fauna Peruana, Ornithologist, p. 313, 1845 



(Peru). 

 Sula cyanops RIDGWAY, Proc. U. S. Nat. Mus., xix, p. 595, 1896 (Galapagos 



quoted from Sundevall). 

 Sula variegata ROTHSCHILD AND HARTERT, Novit. Zool., vi, p. 178, 1899. 



Range. Coasts of Chile and Peru. Galapagos Archipelago : 

 Culpepper, Wenman, Tower, James, Brattle, Charles and Hood. 



This species is common on the most northern and most southern 

 islands of the Archipelago Wenman, Culpepper, Tower and 

 Hood but seldom visits the central islands. We never saw it at 

 Tagus Cove, Albemarle, where we spent several months, and at Eliz- 

 abeth Bay, Albemarle, we saw only a few in February flying over 

 Perry Isthmus which separates the northern half of Albemarle Island 

 from the southern half. 



The coloration in life of the naked parts of the adults is as follows : 

 Bill light orange-red, yellowish at the tip and along the commissure ; 

 skin about the eyes deep greenish-black, a light spot beneath the eye ; 

 gular sac blackish. 



On Culpepper this species was found on the tenth of December 

 just beginning to nest. A few birds were seen sitting on eggs, but 

 most of them were in pairs defending nesting sites. The nests con- 

 sisted merely of slight depressions scraped in the soil. 



