129 

 Gen. LXXV. STERNA. Li 



247 sp. *Sterna LEUCOPTERA. Tern. White-wiiiged black Tei'ii . 



Nest, in midland and southera Europe. 

 Eggs. ? 



247 a 



247 3 



247 c 



248 sp. t Sterna nigra. Lin. The black Tern. 

 Hydrochelido7i „ Bonap. 



Nest. May — June, upon tufts of grass, in marshes and pools of water. 

 E,(/gs. 3-4, reJdish yellow, yellowish brown or green, blotched especially at the larger end, 

 wit') purple grey and dark brown. 



•2iSa 



248 5 



248 c 



