1871.] CERTAIN SPECIES OF TYRANNIDjB. 753 



Two Cayenne skins of this species are in Mr, Lawrence's collec- 

 tion, and agree very well with specimens in my collection from 

 Bogota and from Panama. Fraser's skins from Babahoyo must also 

 be referred here, although they approximate somewhat to the Vene- 

 zuelan form {M. rufipennis). 



The typical specimen of Mr. Lawrence's M. marginatus (from 

 Panama) is a young bird in my opinion, showing for that reason 

 narrow edgings to the wing-coverts and broader rufous margins to 

 the tail-feathers. But I cannot separate it specifically from other 

 specimens of M. cayennensis from tbe same district. 



4. Myiozetetes similis. 



Muscicapa similis, Spix, Av. Bras. ii. p. 18, pi. 25. 



Muscipeta cayennensis, Lafr. et D'Orb. Sjn. Av. i. p. 47 ; D'Orb. 

 Voy.Ois. p. 317. 



Tyrannula similis, Hartl. Verz. Mus. Brem. p. 49. 



Elccnea miles, Burm. Syst. Ueb. ii. p. 474 . 



Myiozetetes similis, Cab. et Hein. Mus. Hein. ii. p. 61 ; Sclater, 

 Cat. A. B. p. 219 ; Finsch, P. Z. S. 1870, p. 569. 



Myiozetetes cayennensis, Scl. et Salv. P. Z. S. 1869, p. 598. 



In all freshly moulted specimens of the species which I have seen, 

 there are narrow rufescent edgings to the primaries ; and in this stage 

 it is somewhat hard to give good characters to separate it from 

 M. cayennensis. It is, however, always of considerably larger dimen- 

 sions, and has the inner margins of the primaries paler and more of 

 a yellowish than rufous tint. When the rufescent outer edgings of 

 the primaries wear off, the species comes nearer to M. texensis, but 

 has the back generally of a darker olive. 



Mr. Lawrence sends me a skin of Myiozetetes from Peru (Prof. 

 Orton), which agrees very well with others in" my collection obtained 

 by Mr. "Whitely at Cosnipata in Peru, and by Fraser at Esmeraldas 

 in Ecuador, the latter being a trifle smaller. Mr. Lawrence has 

 given the MS. term grandis* to his skin ; but I am inclined to refer 

 all three to M. similis. 



5. Myiozetetes texensis. 



Tyrannula cayennensis, Sw. Phil. Mag. 1827, i. p. 367. 



Muscicapa texensis, Giraud, B. of Texas, pi. 1 ; Sclater, P. Z. S. 

 1855, p. 65. 



Elcenia texensis, Sclater, P. Z. S. 1856, p. 296. 



Elcenia mexicana, Kaup, in Mus. Berol. et Hein. 



Myiozetetes texensis, Sclater, P. Z. S. 1859, p. 56, et Ibis, 1859, 

 p. 443 ; Sclat. et Salv. Ibis, 1859, p. 123, P. Z. S. 1870, p. 837; 

 Cab. et Hein. Mus. Hein. ii. p. 62 ; Finsch, P. Z. S. 1870, p. 569. 



Myiozetetes colombianus, Cab. et Hein. Mus. Hein. ii. p. 62 ; 

 Sclater, Cat. A. B. p. 219 ; Scl. et Salv. P. Z. S. 1864, p. 359 ; Sal- 

 vin, P. Z. S. 1870, p. 196 ; Finsch, P. Z. S. 1870, p. 569. 



Myiozetetes cayennensis, Sclater, Cat. A. B. p. 219. 



* Kecently published, see Proe. Ac. Sc. Phil. 1871, p. 234. 



