518 INDEX. 



Page. 



Opossum, Virginia - •"^■' 



Opossums l^*' 



Opuntia fulgida 



lindheimeri littoralis -. ^"" 



spinosior 



versicolor " "° 



Oro Blanco Picacho '-^ 



Oryzomys ^ ^°'> " 



aquaticus 454, 455 



palustris - ^^^ 



oryzivorus 455 



texensis 454 



Otay River ; 22 



Otosciurus 249 



Otospermophilus 314 



beecheyi 324 



grammurus 305,315,347 



buckleyi - - 323 



couchii 324 



Ovis 1 233 



canadensis ' 235 



gaillardi 240 



mexicanus : 233, 241, 242 



nelsoni 241, 242, 245 



nelsoni ' 245 



stonei ■- 243 



Pacific Coast Tract 32, 35, 53, 78, 74 



Padre Island ground-squirrel 332 



Tract 73, 74 



Pajaritos Mountains 17, 18, 30, 106, 111, 113 



description of, by Lieutenant Gaillard Ill, 112 



flora of Ill 



poisonous snakes obtained at 113 



Palo Blanco » 55 



de Hierro ^ 62 



Verde ' gi 



Palm, desert 43 



fanleaf ?^ 43 



Palomas lakes, Chihuahua g2 



fauna and flora of 83 



Pang-wQh 233 



Papago Indians 214 



description of ! Hg 



Parasciurus ' 281 



Parkinsonia aculeata gQ 



microphylla , gO 



Parosela spinosa g-^ 



Patagonia Mountains ^ 17 3O 105 



Pecan ' ' ' ^g 



Peccaries -jgo 



Peccary, Texas ; -^^ 



Yaqui.' ; ' jgg 



Pecos muskrat ^oy 



