PL. XXI. 
Fig. 
Fig. 
Fig. 
Fig, 
Fig, 
Fig. 
Fig. 
Fig. 
DON rr ee ear 
FOSSIL EGG AND EGGS RESEMBLING IT IN FORM OR PROBABLE HABITAT 
OF PARENT. 
Fossil Egg. 
Egg of Anas fulvigula. Florida Duck. 
Egg of Sterna fuliginosa. Sooty Tern. 
Egg of Zympanuchus americanus. Prairie Hen. 
Egg of Charadrius dominicus. American Golden Plover. 
Egg of Ardea cerulea. Little Blue Heron. 
Egg of Podilymbus podiceps. Pied-billed Grebe. 
Eggs of Phalacrocorax p. robustus. Violet Green Cormorant. 
