Birds of South Trinidad. 217 



plumage. Dr. Wilson's account is very interesting and 

 should be studied. 



a. Grey phase. 



a, b. $ ad. ; c. ? ad. S.W. Bay, South Trinidad, 20° 

 30' S., 29° 22' W., Sept. 13, 1901. Bill black; tarsi and 

 base of feet pink, outer toe and terminal portion of the other 

 toes and outer part of webs black ; iris dark brown 

 (E. A. W.). 



b. White phase. 



a, b. S af l- ; c - S i n down ; d. $ ad. S.W. Bay, 

 South Trinidad, 20° 30' S., 29° 20' W., Sept. 13, 1901. 

 Bill black ; tarsi and base of feet pink, outer toe and terminal 

 portion of other toes and outer part of webs black ; iris dark 

 brown {E. A. W.). 



5. Daption capensis. 



Daption capensis (Linn.) ; Gigl. Faun. Vert. Oceano, 

 p. 46 (1870) ; Salv. Cat. B. Brit. Mus. xxv. p. 428 (1896) ; 

 Sharpe, Hand-1. B. i. p. 127 (1899). 



a. $ ad. At sea, 34° 39' S., 15° 18' W., Sept. 21, 1901. 

 Bill black ; tarsi black, feet black and light blue ; iris dark 

 brown (E. A. W.). 



6. Gygis alba. 



Gygis Candida (Gm.) ; Saunders, P. Z. S. 1880, p. 163 

 (S. Trinidad) ; id. Cat. B. Brit. Mus. xxv. p. 149 (1896). 



Gygis alba, Sparrm. ; Sharpe, Hand-1. B. i. p. 138 

 (1899). 



a. $ ad. South Trinidad, Sept. 13,1901. Bill black ; 

 feet slate-grey, webs white ; iris black [E. A. W.). 



b, c. ? ad. S.W. Bay, S. Trinidad, 20° 30' S., 29° 22' 

 W., Sept. 13, 1901. Bill black; tarsi slaty blue, toes slaty, 

 webs whitish; iris black (E. A. W.). 



d, e, f. (Eggs.) South Trinidad, Sept. 13, 1901. 

 Measurements : axis 1*7-1 "8 in., diam. 1*3-1*4. 



