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Show 592 MR. E. w. W H I T E O N B I R D S [June 20, rely upon his own resources in a way that renders collecting very arduous, besides being at times an object of suspicion. Owing to my bad state of health, I did not commence operations upon the avifauna of this part of the Neotropical region until the year 1880 ; and then m y trips to Oran, Misiones, and other promising districts were, from one cause and another, generally so hurried, that, as I was unable to remain in desirable spots even for a few days, much less through the season (a step so essential to the observation of the habits of birds), not only will m y notes be characterized by somewhat of baldness, but certain families, such as the Alcedinidae, will be found entirely, and others, such as the Strigidae, but poorly represented, which undesirable result has been further contributed to by the loss of some of m y manuscripts. It is not to be inferred from this, however, that many species of these families have not come under m y observation, but simply that as yet they form no part of m y private collection. However, to the remarks and data herewith furnished I have paid much attention to secure accuracy, and I indulge in the hope that they will be considered of some value. "With regard to the nomenclature, in which I have followed the ' Nomenclator Avium Neotropicalium' of Messrs. Sclater and Salvin, I anticipate there will be found few inaccuracies of any import, although Buenos Aires does not possess the facilities which London enjoys for the accurate determination of species. M y earnest desire is to be able before long to supplement the present with additional notes, until this country shall be pretty well exhausted of its feathery inhabitants. Buenos Aires, May 5, 1882. [I have examined several series of Mr. White's birds, and have great pleasure in testifying to the general accuracy of his determinations. But, as he has given me full authority over his MS., I have thought it right to add a few remarks in certain cases when I have not seen specimens and there is some cause to doubt. These remarks are indicated by m y initials.-P. L. S. London, June 12, 1882.] 1. TURDUS LEUCOMELAS, Vieill. d . Concepcion, Misiones, Arg. Rep., June 23, 1881. 5 . Santo Tome, Corrientes, Arg. Rep., May 11, 1881. $. Concepcion, Misiones, Arg. Rep., June 20, 1881. Iris dark brown. Shot in the woods around the old Jesuit ruins. These birds are plentiful all over Misiones, and are often kept as cage-birds, as they have a pleasant whistle. 2. TURDUS RUFIVENTRIS, Vieill. c?. Oran, Salta, Arg. Rep., Nov. 18, 1880. Iris sepia. During my sojourn in Oran I did not meet with many of this species ; but in the dense woods of Misiones they are abundant; and |