50 Mr. C. Chubb on Birds from [Ibis, 



Chile. I am of opinion, howeverj that the bird in north- 

 western Peru is a different race, and I have separated it 

 under the following name : — 



Pardirallns rityrhynchus simonsi. 



Pardirallus rityrhynchus simomi Chubb, Bull. Brit. Orn. 

 Club, xxxviii. 29 Dec. 1917, p. 33. 



Adult male. Closely allied to P. r. sanguinolentus , but 

 differs in being olive-brown on the upper surface, instead of 

 coffee-brown, and not so uniform ; the underparts paler — - 

 the breast and abdomen slate-grey instead of bluish slate- 

 colour ; and the wing-measurement smaller. 



Total length 330 ram., exposed culmen 53, Aving 134, 

 tail 63, tarsus 52, middle toe and claw 58. 



Habitat. Nerth-western Peru. 



The type, which is in the British Museum, was collected 

 atEten in north-western Peru by P. O. Simons on 9 October, 

 1899 : No. 1345, 



There is also an example in the British Museum said to 

 have been collected at Junin by Jelski, which Taczanowski 

 examined when writing his Orn. Perou and on the label of 

 which he wrote "= casius Tschudi." It is certainly different 

 from the ten other specimens in the National Collection 

 from Peru, and must be regarded therefore as a separate 

 form. 



Pardirallus rityrhynchus tschudii, subsp. nov. 



Rallus casius (nee Spix) Tschudi, Fauna Peruana, 1846, 

 p. 300 : rivers of the coast and forest-regions of Peru ; Tacz. 

 P. Z. S. 1880, p. 213 : Cutervo, Lima, Junin ; id. Orn. 

 Per. iii. 1886, p. 316. 



Rallus rityrhynchus (nee Vieill.) Tacz. P. Z. S. 1874, 

 p. 559. 



Limnojiardahis rityrhynchus (nee Vieill.) Sharpe, Cat. B. 

 Brit. Mus. xxiii. 1894, p. 29 (part, specimen /). 



Adult female. General colour of the upper surface, in- 

 cluding the nape, hind-neck, entire back, wings, and tail, 

 chocolate-brown, darker and inclining to blackish on the 

 apical portion of the innermost secondaries and tail-feathers ; 



