28 Bri.l.KTlX: MlSKl'M OF COMrAKATIVK ZO<*)LOGY. 



Type — M. (\ Z. 77,322. Lafr. coll. 4.(;i) 4. 



Muscisaxicola ruhricai>lll(i Philippi and Landheck. Arc'hi\-. natur- 

 ge^ch.. ISC)."). 1. p. *.H) (^"('oriliiiora dor HaciiMida de la Puerta, Provinz 

 Colchagua." Cliile). 



The specinu'n which proves to be the type of Lafresnaye's Miisci- 

 saxicola alhilora was listetl by Verreaux in his Catalogue of the Lafres- 

 naye Collection as Muscis(uvicoIa rufivrrtrx, and by Sclater (Cat. 

 binls Brit, nuis., 188S, 14, p. 58) doubtfully as a synonym of Musci- 

 sojcicola juninen»is Tackzanowski. A comparison with M. juninensis 

 and -U. nthrirapilla shows beyond doubt its identity with the latter, 

 which it antedates by ten years. The two subspecies should now 

 stand as: — 



Muscisaxicola alhilora alhilora Lafr. 



M uscisaxicola alhilora juninensis Tackz. 



Tachuris Lafresnaye. 



Tachuris Lafresnaye, Echo du monde savant, 12 June, 1836, p. 107. 



Ti/pe. — Regvlus omnicolor Vieillot, Gal., 1834, 1, p. 271, pi. 166 = 

 Sylvia ruhrigastra Vieillot, 1817. 



Tachuris d'Orljigny and Lafresnaye, Mag. zool. Syn. avium, 1837, 

 p. 55. 



Cyanotis Swainson, Class, birds, 1837, 2, p. 243. i. 



Type. — Regulus omnicolor Vieillot. 



The generic name Tachuris Lafresnaye (1836), having priority over 

 Cyanotis Swainson (1837), must replace it. The two forms contained 

 in this genus are: — 



Tachuris ruhrigastra rubrigastra (^'ieillot). 



Tachuris ruhrigastra alticola (Berlepsch and Stolzmann). 



Myiochanes ardosiacus cineraceus (Lafresn^iye). 



Tyrannula cineraccahah., Rev. zool., 1848, p. 7 (Caracas, Venezuela). 



Type— ^l. C. Z. 83,338. Lafr. coll. 8,400. 



Myiochanes ardosiacus polioptilus Todd, Ann. Carnegie mus., 1912, 

 8, p. 208 (Lagunita de Aroa, Estado Lara, Venezuela). 



In some manner Lafresnaye's name Tyrannula cineracea, long ago 

 became applied to the South American black phoebe, and that bird 



