---- _solo_, ii. 189. Chrysomitris atrata, i. 65. ---- barbata, i. 64. ---- icterica, i. 64. ---- magellanica, i. 64. Chrysomus frontalis, i. 99. Chrysoptilus chlorozostus, ii. 21. ---- cristatus, ii. 21, 228. ---- melanochlorus, ii. 21. Chrysotis æstiva, ii. 47. ---- amazonica, ii. 47. ---- vinacea, ii. 46. Chrysuronia chrysura, ii. 8. ---- ruficollis, ii. 8. _Chueké_, ii. 216. Chunga burmeisteri, ii. 162. _Chuñia_, ii. 162. _Churinche_, i. 152. Ciconia maguari, ii. 99, 106. Cinclodes bifasciatus, i. 173. ----, _Brown_, i. 172. ---- fuscus, i. 172. ---- vulgaris, i. 172. ----, _White-winged_, i. 173. Cinclus schulzi, i. 11, ii. 223. _Cinereous Cuckoo_, ii. 38. ---- _Harrier_, ii. 57. ---- _Plover_, ii. 173. ---- _Tinamou_, ii. 210. ---- _Tyrant_, i. 128. _Cinnamomeous Kestrel_, ii. 69. Circus cinereus, ii. 57. ---- macropterus, ii. 58. ---- maculosus, ii. 58. ---- megaspilus, ii. 58. Cistothorus fasciolatus, i. 16. ---- platensis, i. 15. Cnipolegus anthracinus, i. 126, 127. ---- aterrimus, i. 126. ---- cabanisi, i. 128; ii. 229. ---- cinereus, i. 128; ii. 229. ---- cyanirostris, i. 127. ---- hudsoni, i. 126, 131. Coccoborus glaucocæruleus, i. 44. Coccyzus americanus, ii. 37. ---- cinereus, ii. 38. ---- melanocoryphus, i. 81; ii. 38. ---- pumilus, ii. 39. ---- seniculus, ii. 38. _Cock, Little_, i. 206. _Cock-tailed Tyrant_, i. 122. _Cocoi Heron_, ii. 93. _Cola estraña_, i. 123. Colaptes agricola, ii. 22, 24. ---- australis, ii. 24. ---- campestris, i. 82; ii. 24. ---- leucofrenatus, ii. 21, 228. ---- longirostris, ii. 23, 223. ---- pitius, ii. 24. ---- pura, ii. 24. ---- rupicola, ii. 23. _Colegial_, i. 131. Columba livia, i. 83. ---- maculosa, ii. 140. ---- picazuro, ii. 139, 140. Columbina aurisquamata, ii. 142, 228. Columbula picui, ii. 39, 143. _Come-palo_, ii. 19. Cometes sparganurus, ii. 3. _Common Barn-Owl_, ii. 48. ---- _Jacana_, ii. 163. ---- _Miner_, i. 165. ---- _Rhea_, ii. 216. ---- _Seed-Snipe_, ii. 176. _Condor, Great_, ii. 90. Contopus brachyrhynohus, i. 155; ii. 223. ---- brachytarsus, i. 156. _Contramaestre gaviero_, i. 22. ---- _pardo verdoso, corona amarilla_, i. 146. Conurus acuticaudatus, ii. 42, 228. ---- aymara, ii. 46. ---- brunniceps, ii. 46. ---- fugax, ii. 42. ---- glaucifrons, ii. 42, 228. ---- hilaris, ii. 43, 222. ---- mitratus, ii. 43. ---- molinæ, ii. 43. ---- murinus, ii. 43. ---- patachonicus, i. 25; ii. 41. ---- patagonus, ii. 41. ---- rubrirostris, ii. 46. _Coot, Red-fronted_, ii. 157. ----, _Red-gartered_, ii. 157. ----, _Yellow-billed_, ii. 158. Corethrura leucopyrrha, ii. 154. _Cormorant, Brazilian_, ii. 91. _Correndera, La_, i. 17. Coryphistera alaudina, i. 188; ii. 229. ----, _Lark-like_, i. 188.