18 EaGS OF NORTH AI'JEEICAN' BIRDS. 



and sub-tropical America. Occurs in Florida; accidental as 

 far northward as Massachusetts. Known by the small size. 



116. Red-footed Boobt, Sida piscator. Eggs similar to 

 those of No. 115. Breeds on the coasts and islands of tropi- 

 cal and sub-tropical seas ; accidental as far north as Mexico and 

 Florida. 



117. Gannet, Sida bassana. Eggs, 1 or 2, oval ; 1.84 -j- 

 3.00 to 2.10 + 3.30. Eggs placed on clifts in a huge nest of 

 seaweed. Breeds from Gulf of St. Lawrence and British 

 Isles, northward, on both sides of the Atlantic. Known by the 

 large size. Breeds in May. 



Family X. ANHINGID^. Darters. 

 Eggs bluish, covered, when fresh, with a white chalky de- 

 posit. 



118. ANiuisGX^AnhingaanJd7iga. (Type, Plate III.) Eggs, 

 3 to 6, oval ; 1.15 -f- 2.15 to 1.25 + 2.25. Distinguished by the 

 small size and pale bluish color. Breeds in Florida, and north- 

 ward, to the mouth of the Ohio river, in April. 



Family XI. — FHALACROCORACID^. Cormorants. 



Eggs oval and chalky, as in the preceding, but of a deeper 

 bluish green color. 



119. Cormorant, Phalacrocorax carbo. Eggs, 3 or 4; 

 1.65 + 2.60 to 1.75 + 2.60. Breeds from Gulf of St. Law- 

 I'ence, northward, late in May. 



120. Double-crested Cormorant, Phalacrocorax dilophus. 

 Eggs, 3 or 4; 1.35 + 2.25 to 1.50 + 2.50; placed on cliffs, in 

 a rough nest, made of seaweeds, etc. Breeds from the Bay of 

 Fundy, northward, along the eastern coast, and in the interior 

 to the Great Lakes and Wisconsin. 



120a. Florida Cormorant, Phalacrocorax dilophus Jlori- 

 danus. Eggs indistinguishable from those of No. 120. Breeds 

 along the Gulf coast, northward, and in the Mississippi valley, 



