X TABLE OF CONTENTS. 



Order Tubinares — Continued. 



Family Hydrobatidae — Continued. Page. 



Beal petrel 147 



Habits 147 



Distribution 151 



Oceanodroma macrodactyla 151 



Guadalupe petrel 151 



Habits 151 



Distribution 153 



Oceanodroma castro 153 



Hawaiian petrel 153 



Habits 153 



Distribution 155 



Oceanodroma melania 156 



Black petrel 156 



Habits 156 



Distribution 158 



Oceanodroma homochroa 159 



Ashy petrel 159 



Habits 159 



Distribution • 162 



Oceanodroma monorhis socorroensis 162 



Socorro petrel 162 



Habits 162 



Distribution 165 



Oceanites oceanicus 165 



Wilson petrel 165 



Habits 165 



Distribution 172 



Fregetta leucogastris 173 



White-bellied petrel 173 



Habits 173 



Distribution 175 



Pelagodroma marina hypoleuca 176 



North Atlantic white-faced petrel 176 



Habits 176 



Distribution 181 



Order Steganopodes 181 



Family Phaethontidae 181 



Leptophaethon lepturus catesbyi 181 



Yellow-billed tropic-bird 181 



Habits 181 



Distribution 187 



Phaethon aethereus 187 



Red-billed tropic-bird 187 



Habits 187 



Distribution 190 



Scaeophaethon rubricaudus 190 



Red-tailed tropic-bird ' 190 



Habits 190 



Distribution 193 



