5S0 [NDEX. 



Page. 



Willow, deserl 68 



longleaf 46 



longs talk 45 



Nuttall 47 



smoothleaf 46 



yewleaf 46 



Wood-mouse, Apache 410 



Arizona 391 



Texas gray 404 



Wood-ral 318 



Apache 491 



Attwater • 469 



Banning 486 



Chihuahua 491 



( iolorado River 472 



Eastern Deserl 482 



hermit 187 



pallid 471 



pine 490 



pretty 492 



Rhoads ! 484 



Sau Diego 488 



small-footed 470 



Stephens 493 



Texas - 470 



Western Deserl 



white-throated 476 



Wood-rats '. 467 



Wragg's Ranch. Texas 81 



Xanthium ' 396 



Xerospermophilus 328, 329,336 



Yaqui Basin 4 



Subtropical Tract 73. 74 



Indians, characteristics of t. 26 



Ysleta, Texas '. 9 



Yucca brevifolia 13 



cons! ructa 43 



deserl 43 



large-fruit 44 



macrocarpa 44 



Mohave 44 



mohavensis 1 1 



radiosa ■ 43 



Schott 43 



treculeana 43 



Yuma, Arizona 20, 125 



Desert 19, 20. 123 



hopper mouse 378 



ground-squirrel 336 



Zizyphus, obtuseleaf (i • 



obtusifolius 64 



o 



