PLAXK XVI. 



1, balivary Glands, ( ti, one eularged ) and Tongue, 2, Stomach, 3, Flawed body, 4, Back of Wing musolos. 

 i>, Intestines, 7, Front, 8, Side view of Tongue, y, 10, same (enlarged) 11, Egg, 12, Tail Feathers, 13, Head, 

 14, Upper mandible, 15, 16, Sternum of Chimney Swift. 17, 18, Sternum, 10, Egg, 20, Larynx, 21, Tongue, 

 ( enlarged ) of Kuby-throated Humming Bird. 22, Foot, 23, Upper Mandible, 24, Head of Mangrove Cuckoo, 

 25, 26, Sternum, 27, Egg. of Black-billed Cuckoo. 



