13 t ]\rr. J. GralKim Kerr on the Avifaiom 



the very sliort touiiiio, and thus enable the operation of 

 swallowing to be performed. 



[New to the Argentine list, but quite likely to oecur in 

 tliis district. — P. L. S.] 



71. TlIAMNOPHILUS MAJOR. {Op. clt. i. p. 203.) 



(No. 170, S ') Fortin Page. August lOtli, 1890. 



A^ery common amongst the bushes, and the male very 

 conspicuous from his sharply contrasted colours. They \\\e 

 entirely upon the ground or amongst the lower branches of 

 bush( s. '^riie male and fcuKile sing in concert, sitting upon 

 h)\v brani'hes near one another. They utter a succession of 

 s'larp chick-like notes, at first quite distinct, but gradually 

 bc(H)ming more rapid and passing into a confused trill, which 

 finally winds up in a curious miauw-Wke sound. The bird 

 a'so frequently utters this peculiar cat-like cry only. 



75. Tn.oiNopuiLus ambiguus (Sw.) : Scla'er, Cat. B. xv. 

 p. 201. 



(No. 37, S •) ^""ear Fortiu Nueve. April 1th, 1890. 



Only a single specimen of this Bush-bird was obtained. 

 In consequence of its imperfect state, the tail-feathers being 

 absent, its identity is not absolutely certain. Mr. Sclater, 

 howcA'er, thinks it most probably belongs to T. ambiguus, 

 which has been met witli previously in the not very distant 

 province of iNIatto Grosso, by Mr. II. H. Smitli. 



7(5. TlIAMNOPHILUS RADiATUs (Vicill.) : Sclater, Cat. B. 

 XV. p. .910. 



(No. 87, S ji--; 151, S ; 15-^. ?•) Fortin Page. July 

 2(Jth, 189a. 



Common amongst bushes, resembling in habits T. Diajor. 

 Hops about with its crest usually elevated. Its song con- 

 sists of a low clear uote^ several times repeated and ending 

 in a slight trill. 



[It was quite to be expected that this species, the Batara 

 lisiado of Azara, would occur on the Pilcomayo. — P. L. S.] 



77. Hydkopsalis fukcivera (Yieill.) : Sclater, P. Z. S. 

 18G(>, p. 142. 



Very common. jNIany were seen skimming over the 

 water's surface of the Pilcomayo during the night. 



