Vol. IX] HALL & GRINNELL— LIFE-ZONE INDICATORS 49 



LOWER SONORAN ZONE^Continued 



Otus asio gilmani Swarth 



Dryobates scalaris cactophilus Oberholser 



Centurus uropygialis uropygialis Baird 



Colaptes chrysoides mearnsi Ridgway 



Phalaenoptilus niittalli nitidiis Brewster 



Chordeiles acutipennis texensis Lawrence 



Calypte costae (Bourcier) 



Tyrannus vociferans Swainson 



Pyrocephalus rubinus mexicanus Sclater 



Pica nuttalli (Audubon) U 



Molothrus ater obscurus (Gmelin) 



Icterus cucullatus nelsoni Ridgway 



Pipilo aberti Baird 



Guiraca cserulea salicarius Grinnell 



Piranga rubra cooperi Ridgway 



Vireo belli pusillus Coues 



Vireo belli arizonae Ridgway 



Vermivora lucise (Cooper) 



Dendroica sestiva sonorana Brewster 



Mimus polyglottos leucopterus (Vigors) 



Toxostoma lecontei lecontei Lawrence 



Toxostoma crissale Henry 



Heleodytes brunneicapillus couesi (Sharpe) 



Auriparus flaviceps flaviceps (Sundevall) 



Polioptila plumbea (Baird) 



Polioptila calif ornica Brewster . 



Mammals 



Scapanus latimanus grinnelli Jackson 



Scapanus latimanus campi Grinnell & Storer 



Notiosorex crawfordi crawfordi Baird 



Macrotus californicus Baird 



Myotis velifer (J. A. Allen) 



Myotis occultus Hollister 



Myotis yumanensis yumanensis (H. Allen) 



Myotis californicus pallidus Stephens 



Pipistrellus hesperus Hesperus (H. Allen) • . ' 



Pipistrellus hesperus merriami (Dobson) U 



