COMMON TERN. 33 



Back on the upper part, grey, each feather margined with 

 white and greyish or reddish brown crescent-shaped marka; 

 on the lower part white. Of the primaries the first has the 

 outer web black, the others are grey, the tips hoary grey; 

 secondaries, tipped with white; tertiaries, also tipped with 

 white; upper tail coverts, white. Legs and toes, yellowish 

 reddish brown; claws, dusky; webs, yellowish reddish brown. 

 One of these birds was shot at Lowestoft, in Norfolk, the 

 12th. of August, 1853, which was entirely of a snow-white 

 colour, except a few minute grey lines between the bill and 

 the eye, a little tinge of grey on the quill feathers of the 

 wings, and a very slight smoke-coloured tint over the head. 



VOL. fin. 



