198. _Synallaxis orbignii_, Reichenb. (D'Orbigny's Spine-tail.) 183 199. _Synallaxis modesta_, Eyton. (Modest Spine-tail.) 183 200. _Synallaxis sordida_, Less. (Sordid Spine-tail.) 184 201. _Synallaxis sulphurifera_, Burm. (Yellow-marked Spine-tail.) 185 202. _Synallaxis patagonica_ (Lafr. et d'Orb.). (Patagonian Spine-tail.) 186 203. _Synallaxis hudsoni_, Scl. (Hudson's Spine-tail.) 186 204. _Synallaxis maluroides_, d'Orb. (Wren-like Spine-tail.) 188 205. _Coryphistera alaudina_, Burm. (Lark-like Coryphistera.) 188 206. _Anumbius acuticaudatus_ (Less.). (Firewood-Gatherer.) 189 207. _Limnornis curvirostris_, Gould. (Curved-bill Rush-bird.) 191 208. _Phacellodomus frontalis_ (Licht.). (Red-fronted Thorn-bird.) 192 209. _Phacellodomus sibilatrix_, Scl. (Whistling Thorn-bird.) 192 210. _Phacellodomus striaticollis_ (d'Orb. et Lafr.). (Red-winged Thorn-bird.) 194 211. _Phacellodomus ruber_ (Vieill.). (Red Thorn-bird.) 194 212. _Homorus lophotes_, Reichenb. (Brown Cachalote.) [Plate IX.] 195 213. _Homorus gutturalis_ (d'Orb. et Lafr.). (White-throated Cachalote.) 197 214. _Anabazenops oleagineus_, Scl. (Oily-green Anabazenops.) 198 215. _Sittosomus erithacus_ (Licht.). (Robin-like Wood-hewer.) 198 216. _Glyphorhynchus cuneatus_ (Licht.). (Wedge-billed Wood-hewer.) 199 217. _Dendrocolaptes picumnus_ (Licht.). (Flat-billed Wood-hewer.) 199 218. _Drymornis bridgesi_, Eyton. (Bridges's Wood-hewer.) [Plate X.] 199 219. _Xiphocolaptes albicollis_ (Vieill.). (White-throated Wood-hewer.) 200 220. _Xiphocolaptes major_ (Vieill.). (Chestnut Wood-hewer.) 201 221. _Picolaptes angustirostris_ (Vieill.). (Narrow-billed Wood-hewer.) 201 Fam. XVIII. FORMICARIIDÆ, or ANT-BIRDS. 222. _Thamnophilus leachi_ (Such). (Leach's Bush-bird.) 202 223. _Thamnophilus major_, Vieill. (Larger Bush-bird.) 203 224. _Thamnophilus cærulescens_, Vieill. (Slaty-blue Bush-bird.) 204 225. _Thamnophilus ruficapillus_, Vieill. (Red-capped Bush-bird.) 204 Fam. XIX. PTEROPTOCHIDÆ, or TAPACOLAS. 226. _Scytalopus superciliaris_, Cab. (White-eyebrowed Scytalopus.) 205 227. _Rhinocrypta lanceolata_, Geoffr. et d'Orb. (Gallito.) 206 228. _Rhinocrypta fusca_, Scl. et Salv. (Brown Gallito.) 207 229. _Pteroptochus albicollis_, Kittl. (White-necked Tapacola.) 207