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Show 138 MESSRS. SCLATER A N D SALVIN [Feb. 13, public, about twelve miles from the city of Buenos Ayres, by one of their correspondents, Mr. William II. Hudson. W e have had great pleasure in determining the species, a list of which is herewith given. Nearly the whole of them are included in the list of the birds of the 'Argentine Republic given in the second volume of Burmeister's excellent 'Reise durch die La-Plata-Staaten ;' but there are many points which call for remarks. The following is a complete list of the species. The nomenclature used is generally that of Sclater's ' American Catalogue;' but we have also always referred to Burmeister's work above mentioned, which is the best guide to the ornithology of this district. The number of skins submitted to our inspection is 265, referable to 96 species. Burmeister's list of the birds of the whole Argentine Republic includes 263 species. Among the 96 species represented in the present collection the following 14 are not included in Burmeister's list:- Geothlypis velata. Picus mixtus. Molothrus rufo-axillaris. Circus macropterus. Synallaxis maluroides. Columba picazuro. anthoides. Algialitis falklandica. Limnornis curvirostris. Tringa bonapartii. Myiotheretes rufiventris. bairdi. Myiobius ncevius. Butorides cyanurus. It is most important that this district should be thoroughly worked out, in order that the whole of Azara's species may be re-identified. W e trust, therefore, that Mr. Hudson will continue his collections in this interesting locality, and that we may again have the pleasure of calling the Society's attention to this subject. 1. TURDUS LEUCOMELAS. Zorzal obscuro y bianco, Azara, Apunt. i. p. 341. Turdus leucomelas, Vieill. N . D. xx. p. 226, et E. M . 644. Turdus crotopezus, Burm. La-Plata-Reise, ii. p. 474. Turdus amaurochalinus, Cab. Mus. Hein. p. 568 ; Scl. et Salv. P. Z. S. 1866, p. 177. The receipt of this species from this locality, where it is stated to be " resident," appears to settle the question of its being Azara's " Zorzal obscuro y bianco." It therefore becomes entitled to bear the name leucomelas of Vieillot. W e have compared Mr. Hudson's specimens with a typical example of T. amaurochalinus, and find them identical. This Thrush has a wide range in South America. Natterer collected examples at Ypanema in Brazil, one of which is now in the Bremen Museum. Sclater's collection contains specimens from other parts of Brazil, Bolivia, and Cayenne. Bartlett has recently sent specimens from the Ucayali, as we have already noted. 2. T U R D U S R U F I V E N T R I S (Vieill.) ; Burm. 1. c. p. 474. |