INDEX. 505 



Bisbee, Arizona ■ 13,17 



collections made at 99 



Blanco, Don Jacobo, International Boundary Commissioner 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 5 



Brayodendron texanum 07 



Brazos River 9 



Broad-tailed beaver 350 



Brush-mouse, Apache 416 



Attwater 423 



l)are-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 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 



( 'arrizalillo Mountains, New Mexico 10, 30 



description of 83 



Springs, New Mexico 10 



