WHITE-WINGED BLACK TERN. 143 



WHITE-WINGED BLACK TERN. 



SILVER-WINGED BLACK TERN. 



PLATE CCXIX. 

 Sterna leucoptera, MEYER. 



r 1 1HE eggs of this species are three or four in number, 

 -*- with many greyish spots, and some larger blackish- 

 red ones, the ground colour being dull yellowish-olive. 

 They are of a rotund form. 



The male and female birds sit on them in turn, 

 and shew much anxiety for their safety, flying at and 

 about all intruders. 



The figure on the plate is from an egg forwarded 

 by J. R. De Capel Wise, Esq., of Lincoln College, 

 Oxford. 



