364 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. XIII. 



Range: Colombia and Venezuela, southward to Ecuador, Peru, 

 Bolivia and northwestern Brazil, 

 i: Peru (Yurimaguas). 



Ramphastos citreolaemus Gould. YELLOW-THROATED TOUCAN. 



Ramphastos citreol&mus GOULD, Proc. Zool. Soc. Lond., 1843, p. 147 (Bogota, 

 Colombia); Id., Mon. Ramphastidas, ed. 2, 1854, pi. 9 and text; WYATT, Ibis, 

 1871, p. 379 (Colombia); SCLATER and SALVIN, Proc. Zool. Soc. Lond., 1879, 

 P- 537 (Antioquia, Colombia) ; CHAPMAN, Bull. Am. Mus. Nat. Hist., XXXVI 

 1917. P- 330, pi. XXXVIII, fig. 3 (Puerto Valdivia; La Frijolera; Puerto 

 Berrio; Malena; west of Honda, Colombia). 



Rhamphastos citreolamus SCLATER, Cat. Bds. Brit. Mus., XIX, 1891, p. 131. 



Range: Colombia. 

 Ramphastos osculans Gould. OSCULANT TOUCAN. 



Ramphastos osculans GOULD, Proc. Zool. Soc. Lond., 1835, p. 156 (Brasil = Rio 

 Negro, northern Brazil, by designation) 4 ; Id., Mon. Ramphastidas, ed. I, 

 1834, pi. 5 and text; 7d.,ed. 2, 1854, pi. loand text; BERLEPSCH and HARTERT, 

 Nov. Zool., IX, 1902, p. too (Munduapo, upper Orinoco); BERLEPSCH, Nov. 

 Zool., XV, 1908, p. 281 (Cayenne); HELLMAYR, Nov. Zool. XVII, 1910, p. 

 397 (Borba, Rio Madeira); CHERRIE, Mus. Brooklyn Inst. Arts & Sci., Sci. 

 Bull., II, No. 6, 1916, p. 317 (Munduapo); CHUBB, Bds. Brit. Guiana, I, 

 1916, p. 445. 



Range: Northern Brazil, Venezuela and Guiana. 



Ramphastos theresse b Reiser. THERESA'S TOUCAN. 



Ramphastos theresas. REISER, Anz. Ak. Wiss. Wien, 1905, No. XVIII, p. 322 (Rio 

 Paranahyba, Piauhy, northeastern Brazil); BRABOURNE and CHUBB, Bds. 

 So. Am., I, 1912, p. 157, No. 1534. 



Range: Northeastern Brazil. 



*Ramphastos ariel Vigors. ARIEL TOUCAN. 



Ramphastos ariel VIGORS, Zool. Journ., II, 1826, p. 466 (Rio de Janeiro); DES- 



COURTILZ, Orn. Bras., 1852, pi. 12, fig. i; GOULD, Mon. Ramphastidag, ed. 



I, 1834, pi. 10 and text; Id., ed. 2, 1854, pi. 12 and text; HELLMAYR, Nov. 



Zool., XIII, 1906, p. 380 (Prata, Distr. of Para); Id., Abh. K. Bayer. Akad. 



Wiss., Munchen, XXVI, 2, 1912, p. 95 (Para District). 

 Rhamphastus ariel GOELDI, Ibis, 1903, p. 498 (Rio Capim). 

 Rhamphastos ariel SCLATER, Cat. Bds. Brit. Mus., XIX, 1891, p. 131; GOELDI, 



Alb. Aves Amazon, pt. I, 1900, pi. n, figs. 43, 4b; HELLMAYR, Nov. Zool., 



Cf. Berlepsch and Hartert, /. c. 



b Ramphastos theresa REISER: Intermediate between R. osculans and R. ariel. 

 Differs from osculans in having a light blue spot at the base of the upper mandible 

 (instead of a white stripe) ; differs from ariel by the saffron instead of red upper tail 

 coverts, whitish yellow cheeks and small red spot on breast; bill smaller. 



