260 



Zoology of Colorado 



Parajulus, 235 

 Paramoecium. 252 

 Parelephas, 19 

 Paroquet, 75 

 Peale, A. C. 9 

 Pelican, 60 

 Pemphigus, 164 

 Penard, Eugene, 247 

 Pediculus, 146 

 Perdita. 196 

 Perodipus, 38 

 Perognathus, 47 

 Peromyscus, 37 

 Phalarope, 66 

 Phalangida. 239 

 Pheasants, 69 

 Phoebe, 80 

 Phrynosoma, 106 

 Physa. 137 

 Pieridae, 216 

 Pieris, 219. 220 

 Pigeon, 56, 71 

 Pikas, 39, 53 

 Pike, Zebulon, 56 

 Pileolted Warbler, 94 

 Pill-bugs, 232 

 Pine Siskin, 85 

 Pinyon Jay, 82 

 Pintail. 62 

 Pipit, 94 

 Pisidium. 141 

 Planarians, 242 

 Planesticus, 99 

 Planorbis, 137, 138 

 Plant-bugs, 159 

 Plant Lice, 163 

 Plasmodium, 250 

 Plovers, 66. 67 

 Pocket Gophers, 46 

 Pocket Mice, 47 

 Porcupine, 53 

 Porifera, 246 

 Prairie Chicken, 71 

 Prairie-dogs, 40 

 Prairie Rattlesnake, 108 

 Primates, 21 

 Primitive Mammal, 1 5 

 Printz, 37 

 Procyon, 27 

 Protozoa, 247 

 Protura, 144 

 Pupilla, 133 

 Putnam, J. D., 162 

 Putorius, 29 

 Pseudacrist, 1 1 3 

 Pseudoscorpions, 239 

 Psithyrus, 204 

 Ptarmigan, 71 



Pygmy Owl, 75 

 Pyralidae, 229 



Quails, 70 



Rabbits, 39, 53 

 Raccoon, 27 

 Rails, 65 



Ramaley, Francis, 1 1 

 Rana, 113 

 Ranidae, 1 1 2 

 Rats, 48, 49 

 Rattlesnakes, 108 

 Rattus, 52 

 Raven, 56, 81 

 Reakirt, 215 

 Redpoll, 85 

 Redstart, 92 

 Rhodites. 189 

 Rhopalomyia, 182 

 Rhynchtherium, 17 

 Ridgway, 56 



Ring-necked Pheasant, 71 

 Ring-necked Snake. 109 

 Ring-tail. 28 



Road Runner, 56, 7b 



Roan Creek, 5 



Roan Mountains, 6. 10 



Robber-flies, 184 



Robbins. W. W.. 197 



Robin. 56, 57, 99 



Rock Bass, 126 



Rock Squirrel. 44 



Rodents. 36 



Rohwer.F.W.. 158 



Rohwer, G. N.. 12 



Rohwer. S. A.. 13 



Rosy Finches, 84 



Rotifera, 244 



Round Worms, 243 



Ruddy Duck, 63 



Ruffled Grouse, 71 



Sage-hen, 71 

 Sage-thrasher, 95 

 Salamander, 1 1 1 

 Sanderling, 67 

 Sandpipers, 66, 67 

 Sarcodina, 251 

 Sawflies, 188 

 Say, Thomas, 56, 101 

 Scale Insects, 166 

 Scarlet Mites, 237 

 Sceloporus, 107 

 Sciurus, 42 

 Sclater, P. L... 95 

 Sclater, W. L... 59 

 Scorpions, 239 



