127 

 Gen. LXXV. STERNA Lh 



243 t Sterna arctica. <Pem. The Arctre Tern. 



Nest. May — June, on sand or grass, on the sea-shore. 



E()p.s: 2-3, yellow, light green, or yellowisli bi^wft, ^pb'lefea %n'cl blofeWd 'sfr^ith 'a:sh -grey, 

 and dark olive-brown 



243 a 



243/^ 



243 c 



244 s.p. *S*ra:RNA ajjglica. Mont. The ^U-billed Tern. 



GdocheJidon „ Bonap. 



Nfst. May — June, in mprshy places, not far from the sea, in the North. 



Fffys. 2-3, yellowish white, with blatclies ash-grey, and spots pale and dark reddish brbWD. 



244 « 



244 6 



244 c 



