ORDER PALMIPEDES. 581 



adult State it is white, with a bright ash mantle ; black 

 thighs ; red feet ; and bill with a black tip. A foot 

 long. 



Lesser Tern. Sterna Miniita, L. Enl. 996. Wil- 

 son, Am. V. t. 60, 2. Naum. 38, f. 55. 



Differs in nothing from the Great Tern, except in 

 size, being one -third less. The forehead is white. 



The Sterna Argentia, Pr. Max. seems to be closely 

 allied to this. 



Sandwich Tern. St. Cantiaca. Albin II. 88. 



Is bigger than the Great Tern, and has the bill 

 black, with the tip yellow. The young is S. Striata, 

 Gm. Lath. vi. pi. 98. 



Caspian Tern. S. Caspia. Pal. Sparm. Mus. 

 Carl. 62. Meyer, Ois. d'Alm, 11. 6. Sav. Ois. 

 d'Egypt, pi. 9, f 1. 



Is the largest of our species. White, with an ash 

 mantle, the occiput mixed black and white ; the bill 

 is red, and the feet black. 



Black Tern. St. Nigra. St. Fissipes, and St. Ncevia. 

 Enl. 338, and 924. Frisch. 220. 



Has the tail less deeply forked. Yellow, with the 



