INDEX TO THE SPECIES. 
Turdus Thenca 
rufiventer 
varius 
curceus .... 
C/iochi 
leucomelas 
albiventer 
Orpheus 
Tyranninae .... 
Tyrannula magnirostris 
auriceps 
parvirostris 
Tyrannus Irupero . 
pepoaza 
polyglottus 
— — nengeta 
magnanimus 
sulphuratus . . 
gutturalis 
coronatus 
Savana 
Ulula rufipes .... 
Ululinae .... 
Uppucerthia dumetoria 
dumetoria, Anat. Descript, of 
dumetorum 
Uppucerthia vulgaris 
rupestris 
Uppucerthia nigro-fumosa 
Page 
Vanellus cinctus 
. 126 
Yiralva aranea 
. 145 
Vultur gryphus 
. 3 
aura 
8 
atratus 
7 
jota 
. . 7 
Vulturidse 
. 3 
White rumped snipe 
. 130 
Xanthornus chrysopterus 
. 106 
flavus 
. 107 
Xema cirrocephalum 
. 142 
Xolmis nengeta 
. 54 
coronata 
. 54 
■ variegata 
, 55 
Pyrope 
. 55 
Yahana proprement dit . 
. 133 
Ypacaha 
. 133 
Yellow crested grosbeak 
. 88 
Yellow shanks snipe 
. 129 
Yetapa psalura 
. 51 
Zaporina notata 
. 132 
spilonota 
. 132 
Zenaida aurita 
. 115 
Galapagoensis 
. 115 
Boliviana 
. 116 
Zonotrichia strigiceps 
. 92 
canicapilla 
. 91 
matutina . 
. 91 
Page 
61 
59 
64 
107 
59 
59 
59 
60 
42 
48 
47 
48 
53 
54 
54 
54 
43 
43 
56 
54 
43 
34 
32 
66 
148 
66 
66 
67 
68 
