524 Mr. Charles Chubb on the 



Hydroleyus silvestrianus of Bertoni as a synonym of the 

 present species. 



[This strange bird is resident and not uncommon in this 

 district. It can only be met with along the forest streams. 

 Its food consists exclusively of the water insects and possihly 

 spawn of fish and frogs. It invariably stands on the stones 

 in the water, and at times even when the water is over the 

 top.— W. F.] 



88. Synallaxis ruficapilla. 



Synatlaxis ruficapilla Vieill. N. Diet. d'Hist. Nat. xxxii. 

 p. 310 (1819 : Brazil) ; Sclater, Cat. B. Brit. Mus. xv. p. 38 ; 

 Ihering, Revista Mus. Paulista, vi. p. 328 (Paraguay) ; 

 Richmond, Proc. U.S. Nat. Mus. xxxv. p. 593 (1908). 



Synallaxis (Barnesia) cururuvi Bertoni, Aves Nuev. Para- 

 guay, p. 76. 



a, b. $ ad. Sapucay, June 25, 30, 1904. 



Bill horn-coloured above, greyish below ; tarsi and feet 

 greenish ; iiis light brown. 



c. ? ad. Sapucay, July 17, 1901. 



The examples from Paraguay agree in every respect with 

 those in the National Collection from Brazil, whence the 

 species was described. I agree, therefore, with Dr. Ihering 

 and Mr. C. W. Richmond in considering S. (Barnesia) curu- 

 ruvi of Bertoni as a synonym of this species. 



[I have met with this species feeding on the ground in 

 the forests at Sapucay. — TV. F.~\ 



89. Synallaxis frontalis. 



Chicli Azara, Apunt. ii. p. 266. no. cexxxvi. (1805). 



Synallaxis frontalis Pelz. Sitz. Ak. AVien, xxxiv. p. 117 

 (1859) ; id. Orn. Bras. p. 35 j Berlepsch, J. f. O. 1887, p. 14 

 (Lambare) ; Sclater, Cat. B. Brit. Mus. xv. p. 39; Hellmayr, 

 Abhandl. Akad. Wiss. Munchen, xxii. p. 631. 



a. ? ad. Sapucay, June 1, 1901. 



Bill blackish above, grey below; tarsi and feet yellowish 

 horn-coloured; iris very light brown. 



[A very rare bird m ith us here, inhabiting- the large 

 montcs. — W. F.~\ 



