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Show 1874.] MR. P. L. SCLATER ON THE GENUS SYNALLAXIS. 25 Hum marginibus externe rufescentibus : long, tota 6, ala 2*2, cauda rectr. med. 2-8, ext. 1*8. Hab. Rio Negro of Patagonia (D'Orb. et Hudson). This is a peculiar species, with the tail (comparatively) short, and the rectrices broad and rounded at their ends. I have compared Mr. Hudson's skins with D'Orbigny's typical specimens. Sect. g. Species supra nigro variegata aut striata: rectricibus acuminatis. 54. SYNALLAXIS ANTHOIDES. Synallaxis anthoides, King, P. Z. S. 1830-31, p. 30 ; Bp. Consp. p. 213 ; Sclater, P. Z. S. 1859, pp. 193, 196, 1867, p. 324; Cat. A. B. p. 153. Synallaxis rufogularis, Gould, Voy. Beagle, Zool. iii. p. 77, pi. 23 ; Phil, et Landb. Cat. Av. Chil. p. 12. Sphenopyga rufigularis, Cab. et Hein. Mus. Hein. ii. p. 28. Supra fusca nigro striata et variegata : subtus dilutior: gula macula rubra: fascia lata ad remigum basin rufa: subalaribus rufescentibus : cauda rectricibus mediis nigris fusco marginatis, lateralibus rufescentibus ad basin nigris: long, tota 6, ala 2*cauda rectr. med. 2*5, lat. 1*5. Hab. Chili, near Valparaiso, East Falkland, and valleys of southern Patagonia (Darwin) ; Chili (Reed). In my American catalogue I gave " Bolivia (Bridges)" as a locality for some examples of this Synallaxis. I have now no doubt that these skins were really from Chili, as they agree exactly with others received from that country, and I have found other Chilian skins of Bridges marked " Bolivia." 55. SYNALLAXIS HUDSONI, sp. nov. Synallaxis anthoides, Scl. et Salv. P. Z. S. 1868, p. 141. Supra fusca nigro striata et variegata: subtus pallide ochracea, medialiter albescentior, hypochondriis et crisso nigro striolatis gula fiavicante : remigum fascia basali rufa : subalaribus et remigum marginibus interioribus cinnamomeis: cauda rectricibus mediis dor so concoloribus, ceteris ad basin nigris ad apicem fus-cescenti- cinnamomeis : long, tota 7'5, ala 3*3, cauda rectr. med. 3*5, ext. 2. Hab. Rep. Arg. Conchitas prope Buenos Ayres (Hudson). Mus. P. L. S. Obs. Similis prsecedenti, sed valde major, et gula fiavicante necnon corpore subtus cinnamomeo diversa. 56. SYNALLAXIS WYATTI. Synallaxis wyatti, Scl. et Salv. P. Z. S. 1870, p. 841 ; Wyatt, Ibis, 1871, p. 330. Supra fusca, nigro striata : tectricum alarium marginibus et remigum macula magna basin occupante cum subalaribus rufis : subtus pallide ochracea, pectore paulo obscuriore et punctis paucis nigris asperso, gula alba fiavicante tincta : cauda rectricibus duodecim, |