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Show 50 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. This bird, like the last species, generally moves in very small flocks. Its habits, 1 presume, are also very similar; for I state in my notes that it closely approaches to our tit-mice in general manners and appearance. 3. SEUPOPHAGA NIGUICANS. Gould. Sylvia nigricans, Vidll. Tachuris nigricans, D'Orbig. 4' Lajr. Mag. de Zool. 1837. P· 55. Le Petit Tachuris noir&.tre, Azara, No. 167. This bird is common in the neighbourhood of Maldonado, on the banks of the Plata. It generally frequents the borders of lakes, ditches, and other moist places ; but is related in its general manners with the last species. It often alights on aquatic plants, growing in the water. When seated on a twig it occasionally expands its taillike a fan. Sun.-FAM.-TITYRANJE. (PsARIANE, Sw.) PACHYRAMPHUS, G. R. Gray. Pachyrhynchus, Spiro. 1. PACHYRAMPHUS ALBESCENS. Pachyrhynchus albcscens, Gould, MS . PLATE XIV. P. olivaceo-griseus; alis nigrescenti brunneis, albescenti marginal is; guttu1·e corporeque subtus griseo-albis ,· alarum tectricibus injeri01·ibus pallide sulpltu1·eis. Long. tot. 5-fi: uno. ; alaJ, 2..(-g; ; caudw, 2-h ; tarsi, h ; rost. -ft. Head and all the upper surface olive grey; wings blackish brown, the coverts and secondaries broadly margined with dull white; primaries narrowly margined with greyish white; tail blackish brown, the external web of the outer feather white; under surface of the shoulder pale sulphur yellow; throat and under surface greyish white ; bill and feet black. Habitat, Buenos Ayres. The generic name of Pachyrhynchua Spix, is changed by Mr. G. R. Gray, to Pacltyt·a1npltus, as the former word is used in entomology. |
