---- 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. Coryphospingus cristatus, i. 48. ---- pusillus, i. 48. Coscoroba Candida, ii. 126. ---- _Swan_, ii. 126. Cotile ruficollis, i. 36. _Cotorra_, ii. 44. Coturniculus manimbe, i. 60. ---- peruanus, i. 60. Cotyle fucata, i. 35. ---- leucorrhoa, i. 31. ---- pyrrhonota, i. 30. ---- tapera, i. 26. _Coucou_, ii. 38. _Courlan, Southern_, ii. 159. _Cow-bird, Argentine_, i. 72. ----, _Bay-winged_, i. 95. ----, _Screaming_, i. 86. _Crake, Marked_, ii. 155. ----, _Red-and-white_, ii. 154. ----, _Spot-winged_, ii. 155. _Crane-Hawk, Grey_, ii. 67. Crax alector, ii. 145, 146. ---- sclateri, ii. 145. _Creeper, Patagonian Earth-_, i. 170. ----, _Red-tailed Earth-_, i. 171. ----, _Warbling Earth-_, i. 171. _Creole Duck_, ii. 129. _Crested Cariama_, ii. 161. ---- _Duck_, ii. 128. ---- _Oven-bird_, i. 170. ---- _Screamer_, ii. 119. _Crispin_, i. 4; ii. 35. Crotophaga ani, ii. 31, 34. _Crowned Harpy_, ii. 66. Crypturus cinereus, ii. 207, 208. Crypturus obsoletus, ii. 207, 208. ---- tataupa, ii. 208. _Cuckoo, Black-billed_, ii. 38. ----, _Brown_, ii. 35. ----, _Chestnut_, ii. 36. ----, _Cinereous_, ii. 38. ----, _Dwarf_, ii. 39. ----, _Guira_, ii. 32. ----, _Yellow-billed_, ii. 37. _Cuervo_, ii. 90. Culicivora boliviana, i. 12. ---- dumicola, i. 12. ---- stenura, i. 139. _Curahí-remimbí_, ii. 100. _Curassow, Sclater's_, ii. 145. _Curved-bill Rush-bird_, i. 191. Cyanocorax azureus, i. 110. ---- cæruleus, i. 110. ---- chrysops, i. 110. ---- pileatus, i. 110.