CONTENTS 



Page 



THREATENED WILDLIFE OF THE UNITED STATES 



Introduction iii 



General iii 



Acknowledgements iii 



Federal Acts iv 



Criteria for determining an "endangered species".. v 



The Program of the Office of Endangered Species vi 



History of the program vi 



Recovery plan concept vii 



Species and subspecies priorities viii 



EXTINCT OR PRESUMED-EXTINCT WILDLIFE 1 



Fishes 1 



Birds 1 



Mammals ^ 



^ THREATENED FISHES OF THE UNITED STATES 5 



SJ^ Shortnose sturgeon 6 



Lake sturgeon 7 



Longj aw cisco 9 



Deepwater cisco 1 1 



Blackf in cisco 12 



Arctic grayling 1^ 



Lahontan cutthroat trout 16 



Paiute cutthroat trout 18 



Greenback cutthroat trout 19 



Rio Grande cutthroat trout 20 



Humboldt cutthroat trout 21 



Little Kern golden trout 22 



Gila trout 23 



Arizona (Apache) trout 24 



Sunapee trout 25 



Blueback trout 26 



Olympic mudminnow 27 



Desert dace 28 



Humpback chub 29 



Pahranagat bony tail 30 



Mohave chub 31 



Little Colorado spinedace 32 



Moapa dace 33 



Woundf in 34 



Colorado squawf ish 35 



Kendall Warm Springs dace 36 



IX 



