610 Mr. Charles Chubb on the 



c. $ ad. Sapucay, June 11, 1903. 



d. ? juv. Ybytirni, January 29, 1904. 



I have compared these examples with thirty- five others 

 in the National Collection, from Colombia, Guiana, and 

 Brazil, and find that they differ slightly in having the entire 

 upper surface rufous olive-brown, brighter on the wings, 

 while the under parts are slightly more rufous. They do 

 not shew any tendency to the grey on the head, hind-neck, 

 and upper tail-coverts seen in the majority of the series 

 mentioned above. I do not, however, regard these minor 

 details as of specific value, and have followed Dr. Ihering 

 in placing T. metalophonus Bertoni, as a synonym of the 

 present species. 



Two eggs, collected on October 27, 1903, are bluish-white, 

 blotched and spotted with pale chestnut over the entire 

 surface. In one of the specimens the chestnut is confluent 

 at the larger end. Axis 1*1 inch ; diameter 075. 



179. Merula rufi venter. 



Zorzal obscuro y roxo Azara, Apunt. i. p. 336. no. lxxix. 

 (1802). 



Tardus rvfiventris Vieill. N. Diet. d'Hist. Nat. xx. p. 226 

 (1818 : Brazil) ; Berlepsch, J. f. O. 1887, p. 113 (Paraguay) ; 

 Hellmayr. Abhandl. Akad, AViss, Muncheu, xxii. p. 617 

 (1906). 



Merula rufiventer Sharpe, Haud-1. B. iv. p. 121 (1903) ; 

 Ihering, Revista Mus. Paulista, vi. p. 316 (Paraguay). 



a. $ juv. Sapucay, December 25, 1902. 



b. ? ad. „ March 26, 1903. 



Bill olive-green above, somewhat lighter below, a yellowish 

 stripe along the junction of each mandible ; feet pinky horn- 

 coloured ; iris brown. 



c. cf ad. Sapucay, April 1903. 



Bill yellowish green ; iris warm brown. 



d. £ ad. Sapucay, March 24, 1904. 



e. <$ ad. „ May 7, 1904. 



Two eggs (October 11, 1903) are pale blue with lilac spots 

 much more thickly at the larger end, where they are formed 



