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Show 1871.] MR. P. L. SCLATER ON CERTAIN DENDROCOLAPTIDiE. 85 This point being settled, the following changes must be made the nomenclature of the four species of Myiarchus differentiated by Baird (B. N. A. p. 177):- (1) Myiarchus cooperi of Baird must stand as Myiarchus mexicanus (Kaup), being, as just proved, Tyrannula mexicana, Kaup, P. Z.S. 1851, p. 51. F (2) Myiarchus mexicanus of Baird must stand as Myiarchus cinerascens, Lawrence. A second obscure type among the Mexican Tyrannidae that I have lately met with is Tyrannula barbirostris of Swainson, Phil. Mag. 1827, p. 367. The specimen upon which this species was founded is now in the Cambridge Museum, and is labelled in Swainson's own handwriting. It agrees exactly with Blacicus tristis (Gosse); Scl. Cat. A. B. p. 234-a well-known species of Tyrant-birds from Jamaica. There is no doubt, therefore, I think, that there has been an error in locality here, and that the species may be expunged from the Mexican list, whilst the Jamaican Blacicus must adopt the name barbirostris instead of the subsequently given term tristis of Gosse. 7. Remarks on some Species of Dendrocolaptidee in the Collection of the Smithsonian Institution. By P. L. SCLATER, M.A., Ph.D., F.R.S., Secretary to the Society. [Received January 13, 1871.] In a series of skins of birds of the family Dendrocolaptidee to me for determination by the authorities of the Smithsonian Institution are several specimens of much interest, and concerning which I beg leave to offer a few remarks to the Society. 1. SYNALLAXIS CANDJSI. Synallaxis candeei, Lafr. et D'Orb. Rev. Zool. 1838, p. 165 ; Bp. Consp. i. p. 213. Castanea : pileo toto et capitis lateribus sordide nigris : mento gulce lateribus utrinque albis : gula media nigra; ventre albo : cauda castanea, recticibus decern, harum sex mediis late terminatis: long, tota 6, alee 2*3, caudee rectr. lat. 1*2, poll. Angl. Hab. Cartagena (Cande) ; Rio Hacha (Delattre,va. Mus. Derb.) ; Savanilla (Ashurst). I have previously seen examples of this rare and pretty Synallaxis only in the Derby and Berlin Museums. It appears to be restricted to the northern littoral of Columbia. Its nearest ally known to me is S. kollari, Pelzeln * from the Rio Brancho, in which, however, * Orn. Bras. p. 36. |