538 NATATORES. THALASSIDROMA. PETREL. 



rine insects, floating mollusca, and other animal matter 

 picked up on the surface of the water, upon which it is never 

 seen actually to alight for repose, but frequently, as it were, 

 stands and runs upon it by the action of its palmated feet 

 and outstretched wings. 



PLATE 103. Fig. 1. Represents this bird of the natural size, 

 from a specimen belonging to WILLIAM YARRELL, 

 Esq. 



General Bill black, upwards of half an inch long from the forehead 

 tion. to tne tip; much compressed, and shewing an angle 



upon the lower mandible. Head, neck, and under parts 

 greyish-black, with a tinge of brown upon the abdomen. 

 Back and scapulars deep greyish-black. The lower 

 tier of wing-coverts greyish-white, forming a bar across 

 the closed wings. Quills and tail black, the latter 

 forked. Upper tail-coverts, and patch behind the thighs, 

 white. Wings, when closed, reaching a little beyond 

 the tail. Legs and feet black, with the tarsus nearly 

 one inch in length. 



FINIS. 



EDINBURGH : 

 PRINTED BY NEILL & CO. OLD TISHMARJtET. 



