X CONTENTS. 



PAGE 



20. Suborder TUBINAKES : Petrels 773 



60. raniily Procellariid^ . Petrels 773 



74. Subfamily Diomedeina; ■ Albatrosses 774 



75. Subfamily Procellariiim: Petrels 77C 



XIII. Order PYGOPODES : Diving Birds 787 



61. Family Colymbid.e : Loons 789 



62. Family Podicipedid/E : Grebes . 792 



63. Family ALCiDyE : Axiks 797 



76. Subfamily P/^a/mfi?«W ; Parrot Auks, etc 800 



77. Subfamily Alcina : Guillemots, Murres, and Auks proper - . . 810 



PART IV. 



SYSTEMATIC SYNOPSIS OF THE FOSSIL BIRDS OF NORTH AMERICA 



A. Tertiary Birds 822 



B. Cretaceous Birds 825 



C. Jurassic Birds 829 



INDEX 831 



.APPENDIX 865 



