136 PROCEEDINGS OF THE ACADEMY OF 



20. Trogon melanopterus, Swainson. 



Trogon melanopterus, Sw. Cab. Cy. p. 332, (1838). 

 Gould, Mon. pi. 10, 11. 

 From the river Truando. 

 One specimen only in adult plumage. 



21. Trogon atricollis, Vieillot. 



Trogon atricollis, Vieill. Nouv. Diet. viii. p. 318, (1817). 

 Gould, Mon. pi. 8. 

 Falls of the Truando. 



" In the Cordilleras on the Rio Truando. Seen once only, very unsuspicious 

 and easily shot." (Mr. C. J. Wood). 



22. Momotus Martii, (Spix). 



Prionites Martii, Spix, Av. Bras. i. p. 64, (1824). 

 Momotus semirufus, Sclater, Rev. et Mag. Zool. 1853, p. 489? 

 Spix, Av. Bras. i. pi. 60. 

 From the river Nercua. 

 One specimen in adult plumage, labelled as a male bird. 



23. Crypticus platyrhynchus, (Leadbeater). 



Momotus platyrhynchus, Leadb. Trans. Linn. Soc. Lond. xvi. p. 92, (1829). 

 Crypticus Martii, Bonap. Proc. Zool. Soc. London, 1837, p. 119. 

 Jard. and Selby, 111. Orn. iii. pi. 106. 

 From the Cordilleras on the river Nercua. 



In adult plumage, and in colors singularly resembling the preceding, but 

 with the bill differently formed, and affording strong generic distinctions. 

 This is probably the first time that these two birds, which have much per- 

 plexed naturalists, have ever occurred in the same collection. Both are 

 labelled as from the same locality, and I am informed by Mr. C. J. Wood, that 

 they inhabit the forests on the river Nercua, on the western side of the Cor- 

 dilleras. 



24. Ramphastos Tocardus, Vieillot. 



Ramphastos Tocard. Vieill. Nouv. Diet, xxxiv. p. 280. 

 Ramphastos Swainsonii, Gould. Proc. Zool. Soc. London, 1833, p. 69. 

 Gould, Mon. Ramph. pi. 4. 

 From the River Nercua. 



25. Ramphastos carinatus, Swainson. 



Ramphastos carinatus, Sw. Zool. 111. i. p. (pi. 45, not paged.) 

 Gould, Monog. pi. 2. 

 River Nercua. One specimen only, in mature plumage, from the western 

 side of the Cordilleras on the River Nercua. 



26. Pteroglossus erythropygius, Gould. 



Pteroglossus erythropygius, Gould, Proc. Zool. Soc. London, 1843, p. 15. 

 Gould, Monog. pi. 21, Zool. Voy. Sulphur, pi. 28. 

 From the River Truando. Specimens labelled as both sexes are in the col- 

 lection. The females are smaller, and in both sexes there is some variation in 

 the color of the bill as noticed by Mr. Gould, the white being in these specimens 

 more extended in the females. 



27. Selenidera spectabilis, Cassin. 



Selenidera spectabilis, Cass. Proc. Acad. Philada. 1857, p. 214. 

 Jour. Acad. Philada. iv. pi. 1. 

 From the falls of the River Truando. 



Both sexes of this species, in excellent plumage and preservation are in the 

 collection from the Cordilleras on the River Truando. They are, however, pre- 

 cisely similar to Mr. Mitchells specimens described by me as above cited, 

 though the occurrence of this little-known species again, and at another locali- 

 ty, is a point of interest. 



[April, 



