BIRDS 239 



6. STERNA FULIGINOSA Gmelin. 



Sterna fulginosa Gmelin, Syst. Nat., i, p. 605, 1788. — Rothschild and 

 Hartert, Novit. Zool., vi, p. 191, 1899 (Culpepper and Wenman 

 Islands, Galapagos). 



Range. — Tropical and subtropical shores everywhere. In the 

 eastern Pacific : Revillagigedo, Clipperton and Cocos Islands, west 

 coast of Mexico, west coast of South America, Galapagos Archi- 

 pelago. 



Reported by Rothschild and Hartert as taken by the Harris expedi- 

 tion at Wenman and Culpepper. We observed it at these islands in 

 December, but did not secure any specimens. 



Genus Anous Stephens. 

 Anous Stephens in Shaw's Gen. Zool., xiii, p. 139, 1826. 

 Range. — Intertropical. Galapagos Islands. 



7. ANOUS STOLIDUS GALAPAGENSIS (Sharpe). 



Megalopterus stolidus Gould, Zool. Voy. Beagle, ill, Birds, p. 146, 1841 

 (Galapagos). 



Anous galapagensis Sharpe, Phil. Trans., clxviii, p. 469, 1879 (Galapa- 

 gos). — RipGWAY, Proc. U. S. Nat. Mus., xix, p. 642, 1896. 



Anous stolidus galapagensis Rothschild and Hartert, Novit. Zool., vi, p. 

 191, 1899. 



Range. — Galapagos Archipelago : Charles, Hood, Chatham, Bar- 

 rington, Seymour, Duncan, James, Albemarle, Narboro, Abingdon, 

 Bindloe, Tower, Wenman and Culpepper. 



This is a very abundant species throughout the archipelago. It is 

 very similar to A. stolidus ridgwayi Anthony of Cocos and Clipperton 

 Islands, but differs from this subspecies in being slightly darker and 

 in having a more dusky tone to the back and upper tail coverts, and 

 also in having the gray of the upper part of the head darker. One of 

 the Cocos specimens in our collection, however, has the tone of this 

 color indistinguishable from that of the Galapagos specimens. The 

 under parts also of A. s. galapagensis are darker, having a more 

 dusky shade. 



Our cdllection contains three adult males and two adult females, all 

 taken in January. 



At Tagus Cove, Albemarle, these birds were very abundant about 

 the high cliffs facing the ocean. They began to mate about January 

 21 and on the first of February we found eggs. Each bird lays a 

 single egg. The nests were placed in holes in the faces of the tufa 

 cliffs about the cove, and were often so low that they could be reached 



