INDEX. 505 



Page. 



Bisbee, Arizona ,• 13, 17 



collections made at 9" 



Blanco, Don Jacobo, International Boundary CommisGioner 1 



Boca Grande Mountains 30 



Boreal Region 70, 71, 72 



Boundary Monuments, concordance of numbers of 8 



Bovidae 233 



Boxelder - 63 



"Brandegee, Professor Z. S., botanist r 5 



Brayodendron texanum 67 



Brazos River 9 



Broad-tailed beaver 350 



Brush-mouse, Apache 416 



Attwater 423 



bare-footed 422 



California 413 



Buckeye, Mexican 63 



Texas :'. 63 



Buckthorn, cascara ; 64 



evergreen 64 



Bumelia rigida 67 



Burro , 208, 210 



Cabota Mountains, Sonora 114 



Cacalote , ; 174 



Cactus, candelabrum '. 65 



giant 64 



Schott. 66 



Thurber ■ 66 



tree 66 



Cajon Bonito Creek, Sonora 11, 13, 15, 16, 29, 96 



fauna and flora at 93 



California brush-mouse 63 



ground-squirrel i '324. 



juniper 42 



meadow-mouse 498 



mule deer. . , 211 



Subtropical Tract 73, 74 



sycamore - •- 56 



vole 498 



Callospermophilus 309 



bernardinus 313 



chrysodeirus • 312, 313 



lateralis 287, 293, 309, 312 



Camel Skeleton ,- 120 



Camels, Arabian, in the southwest 169 



Camelus dromedarius 169 



Campbell's Ranch, California 22, 135 



Camp Lowell, Arizona 17, 110 



Campo, California ■. .- 22, 135 



Canadian Life Zone 39, 49, 71 



Canyon-squirrel 315 



Carrizalillo Mountains, New Mexico 10, 30 



description of 83 



Springs, New Mexico 10, 



