INDEX TO GENERA. 



Plotus 126 



Podioeps 136 



Podasooys 101 



Podilymbus 136 



Polioptila 42, 72 



Porzana 115 



Polyborus 90 



Polysticta 122, 123 



Poocaetes 64 



Poct'cetes . 66 



Poospiza 64 



Porphvrio 116 



Prioce'lla 134 



Priofinus 134 



Procellaria 134, 135 



Progne 57 



Protonotaria 52, 53 



Psaltriparus 43 



Pseudogryphus 93 



Psilorhinus 71 



Ptiliogonys 58 



Ptilogonys 58, 72 



Ptycorhamphus 137 



Puffinus 134 



Pyranga 56 



Pyrocephalus 74 



Pyrrhula . . 66 



Pyrrhuloxia 65, 66 



Querquedula 121 



Quiscalus 70 



Rallus 113, 115 



Recurvirostra 102 



Regulus 42 



Tlhodostetliia 131 



Rhyacophilus 108 



Rhynchofaleo 90 



Rhynchophanes 66 



Rhynchops 132 



Rhynchopsitta 83 



Rissa 131 



Rostrhamus 88 



Salpinctes 45 



Sasicola 42 



Sayornis 74 



Scardafella 94 



Schoeniclus 107 



Scolecophagus 70 



Scolopax 108 



Scops 85 



Seiurus 52, 53 



Selasphoi'us 77 



Setophaga 52, 55 



Sialia 42 



Sitta 44 



Siurus 53 



Sonialeria 122, 123 



Spatula .121 



Speotyto 86 



Spermophi la 65 



Splieotyto 86 



Sphyrapiciis 82 



Spiza 66 



Spizella 64, 66 



Squatarola 101 



StariKKiias 95 



Steganopus 103 



Stelgidopteryx 57 



Stellula 77 



Stercorarius 130 



Sterna 1 32 



Sternula 132 



Strepsilas 102 



Strix 84, H5 



Sturnella 69 



Sturnus . 71 



Sula 124 



Surnia 86 



Surniiim 85 



Symphemia 108 



Synthliborhamphus 138 



Tachybaptes 136 



Tachycineta 57 



Tachypetes 127 



Tanagra 56 



Tantalops 110 



Tantalus 110 



Telmatodytes 46 



Tetrao 97 



Thalassarche 134 



Thalasseus 132 



Thalassidromas . . 135 



Tballasseus 132 



Thrasaetus 92 



Tbrasyaetus 92 



Thryomanes 46 



Thryothorus 46 



Tinnunculus 90 



Totanus 108 



Tringa 107, 108 



Tringoides . 108 



Trochilus 77 



Troglodytes 46 



Trogon 78 



Tryngites 108, 109 



Tardus 40, 41 



Turtur 95 



Tyrannus 74 



Ulula 85 



Uria 138 



Urile 126 



Urubitinga 92 



Utamania 138 



Vanellus 101 



Vireo 59 



Vireosylvia 59 



Vultur 93 



Xanthocephalus 68 



Xanthura 71 



Xenia 131 



Xenopicus 82 



Zamelodia 66 



Zenaida 94 



Zenaidura 94, 95 



Zonotrichia 64, 66 



