524 INDEX. 



Page. 



Sciurus, alleni 269 



apache 270 



arizonensis 273 



arizonensis 278 



huachuca 277 



carolinensis leucotis 276 



Eossor anthonyi 250 



fremonti grahamensis i 26] 



mogollonensis 256 



griseus anthonyi 264 



nigripes ' 267 



hudsonicus 34] 



mogollonensis 256 



tnearnsi 262 



oculatus 268 



rufiventer 27 1 



t ex in 11 US 271 



s! rial us asial icus 283 



Screw bean 59 



Seca Mountains, description of 82 



Service tree, western "57 



Seven Wells, Salton River, California 21. L29 



Sheep, mountain 233 



Shittimwood 67 



Siena de las Tinajas Altas 20 



de San Antonio Mountains.. 105 



de Sonoyta 116 



Espuela Mountains Mil 



Madre Mountains 89 



Pinta Mountains in 



Rica Mountains, Chihuahua, description of 84 



flora of 85 



Seca 10 



Sigmodon 367. 445 



bispidus 445, i 16 



arizonse 4 is. [50 



berlandieri 449 



eremicus 451 



texianus. lis. I lit 



minimus 446,447 



Signal Mountain 2s. 131 



Sigura 66 



Simpson, < Sharlea T., coaul bor of reporl on mollusca 3 



Sinita 66 



Sitomys americanus arizonse 411 



herronii 437 



nigellus 437 



ins. ilatue 384, 394 



Small-toothed ground-squirrel 328 



Sonoma harvest-mouse 464 



Sonora iron-wood 15 



white-tailed deer 175 



Smiorau Weaver 350 



