139 



WHITE-WINGED BLACK TEEN. 



SILVER-WINGED BLACK TEKN. 

 PLATE CCXIX. 



Sterna leucoptera, METEE. 



THE 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 tReir 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. 



