72 
INDEX. 
cruciferous I, 57. 
graminaceous, epidermis, III, 156f. 
grass-like. YI, 49f, 87f. 
seeds, VI, 89f. 
ovules, III, 157f. 
pollen, III, 152f, YI, 52f, 84f, 87f. 
seeds, III, 157f, VI, 18f, 44f, 84+ 
87f. 
stem, III, 50+ 
vascular, leaves and stems, VI, 101+ 
Plataleidae, IV, 167, 192. 
Platamodes pennsylvanica, I, 59. 
unicolor, I, 59. 
Platanus, I, 30, 31. 
Plates, Explanation of, I, 71-76. 
platineum, Amblystomu, V, 11. 
Platygobio, VI, 76, 82. 
Platygyrium, II, 23. 
Platynus, III, 108f, 119+ 129f, 139+ 
140+ 151*, YI, 40*, 57f, 59*, 
60*, 62*, 63*. 
cupripennis, III, 151*. 
decorus, YI, 40*. 
limbatus, VI, 40*. 
platyrhinus, Heterodon, V, 43. 
platyrhynchus, Scaphirhynchops, I, 51, 
II, 69. 
platystomus, Lepidosteus, I, 51, II, 69, 
82*, 86*. 
Plectrophanes, IY, 178. 
nivalis, IY, 178. 
Plegadis, IY, 192, 208. 
falcinellus, IV, 192. 
guarauna, IV, 208. 
Plethodon, V, II, 12; 
cinereus, var. cinereus, Y, 12. 
var. dorsalis, V, 12. 
var. erythronotus, V, 12. 
glutinosus, V, 12. 
Plethodontidae. V, 7, 11. 
Pleuridium, II, 18. 
Pleurodelidae, V, 7. 8, 15. 
Pleurolepis, I, 35, II, 38, III, 22*, 27*. 
asprellus, II, 38, III. 22*. 
pellucidus, I, 35, II, 38, 74*, 84*, 
III, 22*. 
Pleuroxus, III, 29+ 36f, 39f, 44+ 45f, 
46f, 47f, 57+ 58+ 72f, 73+ VI, 
70+ 72+ 
dentatus, III, 48f, 74+ 
Pliny’s Natural History, cited, III, 152. 
Ploteidae, IY, 167, 201. 
Plotus, IV, 201. 
anhinga, IY, 168. 201. 
Plover, Belted Piping, IV, 194. 
Black-bellied, IV, 194. 
Field, IV, 196. 
Golden, IV, 194. 
Mountain, IV, 207. 
Piping, IV, 207. 
Prairie, IY, 196. 
Semipalmated, IV, 194. 
Upland, IV, 196. . 
Plovers. IV, 194, 207. 
Plum, II, 13. 
Plumatella, II, 75+ 77f. 
Poa pratensis, III, 151+ 
Pochard, American, IY, 200. 
Podabrus, III, 158*. 
tomentosus, III, 152*, 158*. 
Podasocys, IV, 207. 
montanus, I V, 207. 
Podiceps, IV, 203. 
cristatus, IV, 163. 
holbolli, IV, 203. 
podiceps, Podilymbus, IV, 203. 
Podicipedidae, IV, 167, 203, 20S. 
Podilymbus, IY, 203. 
podiceps, IY, 203. 
Podisus, VI, Ilf. 
modestus, III, 94f. 
spinosus, III, 130+ 144+ VI, 28+, 32+ 
Podosphaera kunzei, 1, 58. 
Podura, VI, 52f, 64+ 70+ 93+ 
Poecilichthys, I, 34, II, 41, III, 27*, 30+,. 
35+ 
asprigenis, II, 41, 75*, 84*, III, 23*. 
caeruleus, 1, 34, II, 41. 
flabellatus, I, 34, II, 42. 
jessiae, II, 41. 
lineolatus, I, 34, II, 42. 
niger, I, 34, II, 41. 
spectabilis, 1, 34, II, 41, 42, III, 23*. 
variatus, II, 41, III, 23*. 
Pogonatum, II, 21. 
Poke, IV, 193. 
Polioptila, IY, 172. 
caerulea, IY, 172. 
Pollen, III, 159 1, YI, 50f, 55+, 64 + 
of Ambrosia, III, 157+, VI, 63+ 
64+ 
of blue-grass, III'. 155+ VI, 40+ 
