70 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



ized from a single pair of birds), it is obvious that the color differ- 

 ences sought to be established are not of much value. The Bolivian 

 series are, if anything, a little duller above than the Brazilian, but 

 not so dull as those from northern Argentina and Paraguay. From 

 both they differ in the character of the head-stripes, as above de- 

 scribed, and the form may be retained on this basis. Doctor Hell- 

 mayr recognizes it with reservations. 



Spechiiens exanvined. — Bolivia: Buenavista, 5 (including type); 

 Rio Surutu, 1 ; Cerro Hosane, 1 ; Santa Cruz de la Sierra, 1 ; Palma- 

 rito, 2. Total, 10. 



BASILEUTERUS AURICAPILLUS OLIVASCENS Chapman 



Basileuterus rermivorus (not Motaeilht- vermivora Gmeliu) Cabanis, in 

 Schomburgk, Reisen in Brit.-Guiana, vol. 3, 1848, p. 667, excl. syn. (Mount 

 Roraima, 3,000-4,000 feet, British Guiana). — Solatek, Proe. Zool. Soe. 

 London, 1855, p. 144 ("Bogota," Colombia). — Sclater, Cat. Amer. Birds, 

 1861, p. 34, excl. syn. peirt ("Bogota," Colombia; Trinidad) ; Proc. Zool. 

 Soc. London, 1865, p. 283, part (diag. ; refs.). — Finsch, Proe. Zool. Soc. 

 London, 1870, p. 565 (Trinidad). 



Trichas hivUtatus (not Muscicapa hivittata Lafresnayb and D'Obbigny) 

 Leotaud, Ois. Trinidad, 1866, p. 184 (Trinidad; descr. ; habits). 



Basileuterus aurocapillus (not Setophaga auricapiUa Swaiuson) von Bet?- 

 LEPSCH, Jouni. f. Orn., vol. 32, 1884, p. 284, in text ("Bogota," Colombia; 

 Trinidad ; crit.). 



Basileuterus auricapillus Salvust, Ibis, 1885, p. 203 (Mount Roraima, Brit. 

 Guiana; refs. [part]). — Sharpe, Cat. Birds Brit. Mus., vol. 10, 1885, 

 p. 393, pai't (Mount Roraima, Brit. Guiana; Trinidad; "Bogota," Colom- 

 bia ; crit. ) . 



Basileutei-us verimvorus oJivascen-s Chapman, Auk, vol. 10, 1893, p. 343 

 (Princestown, Trinidad ; orig. descr. ; type in coll. Amer. Mus. Nat. Hist ) . — 

 Chapman, Bull. Amer. Mus. Nat. Hist., vol. 6, 1894, p. 7 (range), p. 13 

 (ref. orig. descr.), p. 17 (song) p. 24 ( Princestov?n, Trinidad; descr.; 

 crit.).— Phelps, Auk, vol. 14, 1897, p. 302 (range), pp. 363, 368 (San An- 

 tonio, Venezuela). 



Basileuterus auricapillus oHvasoens Hei.lmayb, Nov. Zool., vol. 13, 1906, 

 p. 7 (Caparo and Laventville, Trinidad; Cumana, Venezuela; crit.). — 

 Cherrib, Mus. Brooklyn Inst. Sci. Bull., vol. 1, 1906, p. 187 (Heights of 

 Aripo, Trinidad) ; 1908, p. 356 (Carenage and Heights of Aripo, Trini- 

 dad ; descr. nest and eggs). — Stonei, Proc. Acad. Nat. Sci. Philadelphia, 

 1913, p. 208 (Cariaquito, Venezuela). — Che21rie, Mus. Brooklyn Inst. 

 Sci. Bull., vol. 2, 1916, p. 153 (Trinidad; Guanoco, Orinoco River, Vene- 

 zuela, ex Beebe). — Chapman, Bull. Amer. Mus. Nat. Hist., vol. 36, 1917. 

 p. 552 (Buena Vista and Villavicencio, Colombia; range; crit). — Hbli> 

 mayr. Arch. f. Naturg., vol. 90, A, 1924, p. 157, in text (range; crit.). 



Basileuxerus olivaseeus Chubb, Birds Brit. Guiana, vol. 2, 1921, p. 417 (Mt. 

 Roraima, Brit. Guiana; refs.; descr.). 



Basileuterus auricapillus oUvacetis (lapsus) Beebe, Zoologicn, vol. 1, 1909, 

 p. 101 (Guanoco, Venezuela; habits). 



Basileuterus aurocapilla Penard, Vogels van Guyana, 1910, p. 490 (Guiana; 

 descr. ; range ; descr. eggs, ex Nehrkorn ) . 



