522 INDEX. 



Page. 



Reithrodontomys, fulvescens 459 



laceyi . .. 458 



longicauda 457, 464 



megalotis 457. 460 



deserti 462 



group 456, 457. 463 



mexicanus group 456, 463 



intermedius 457 



pallidus • 456, 457. 465 



Rhamnus crocea , 64 



insularis 64 



purshiana G4 



Films integrifolia 63 



Ricefield mouse, Allen 455 



Texas 454 



Rillito ( 'reck, Arizona 17 



Rio Grande, I hihuahua 81 



ground squirrel 328 



Road-crossing of the Santa < !ruz River, Sonora 10G 



Roath, Captain W. D., commanding revenue-cutter Wolcott 5 



Robinia neomexicana 62 



Rock-squirrel 306, 315 



Nuevo Leon 324 



Texas 323 



Rocks from the Mexican Boundary Region, report on 4 



Rocky Mountain bighorn 235 



Rodents 247 



Sahuara 64, 65 



Salix amygdaloides 46 



argophylla 46 



fluviatilis 46 



laevigata 46 



lasiolepis 47 



nigra 45 



nuttallii 47 



occidentalis longipes 45 



taxifolia 46 



Salton River ! 21, 28, 29 



Sea 28, 29 



Sambucus callicarpa 08 



glauca 69 



mexicana 68 



San Bernardino 13 



Mountain ground-squirrel 313 



Ranch 95 



collections made at 96 



River, Mexico, flora of 13, 16, 29, 96 



Springs 12, 13, 14, 16, 95 



Valley 14 



San Clemente ironwood 56 



mouse 400 



San Clemente Island, California 10, 23, 130, 139 



birds of 141 



