446 MESSRS. SCtATER AND SALVIN [JuilC 25, 



7. Rallus rythirhynchus, Vieill. 



Ipacaha jjardo, Azara, Apunt. iii. p. 220. no. 3/2. 



Rallus rythirhynchos, Vieill. N. D. xiii. p. 521, et E. M. p. 1060 ; 

 Scl. & Salv. P. Z. S. 1867, p. 990, et 1868, p. 145. 



Aramides rythirhijiichus, Burm. La Plata-Reise, ii. p. 504. 



Rallus setosus, King, Zool. Journ. iv. p. 94. 



Rallus ceesius, Tsch. F. P. Aves, pp. 52, 301; Schlegel, Mus. d. 

 P.-B, Ralli, p. 8 ; Cassin, Gilliss's Exp. ii. p. 194. 



Rallus sanguinolentus, Sw. Au. iu Men. p. 335 ; Bridges, P. Z. S. 

 1843, p. 118; Darwin, Zool. Voy. Beagle, iii. p. 133; Sclater, 

 P. Z. S. 1867, p. 333. 



Rallus bicolor. Gay, Faun. Chil. Aves, p. 434. 



Aramides zelebori, Pelzeln, Novara-Reise, Vog. p. 133(?). 



Supra oleagineo-hrunneus : subtus plumbeus : rostro viridi, macula 

 mandibul(B basali sanguinea ; long, tola 12'0, alee 5*4, caudce 2"8, 

 rostri a rictu 2'1, tarsi 1'8 (^specim. ex Chili). 



Hab. Paraguay (Azara); rep. Argentina {Burm.); Chili (iey- 

 bold) ; West Peru {Whitely) ; South Brazil (Zelebor). 



Mus. Brit., S. & G. 



Concerning the variations of this species, see our remarks, P. Z. S. 

 1867, p. 990, and 1868, p. 145. In the British Museum is a skin 

 from Hermite Island, Tierra del Fuego, which, though generally 

 resembling the present bird, is of much larger dimensions, and will 

 in all probability require specific separation. 



8. Rallus nigricans. 



Ipecaha obscuro, Azara, Apunt. iii. p. 219. no. 371. 



Rallus nigrica7is,\ieil\, N. D. xxviii. p. 560, et Enc. Meth. p. 1067; 

 Max. Beitr. iv. p. 782 ; Schlegel, Mus. d. P.-B. Ralli, p. 8. 



Aramides nigricans, Hartl. lud. Az. p. 23 ; Burm. Syst. Ueb. iii. 

 p. 385, et La Plata-Reise, ii. p. 504. 



Rallus bicolor, Cuv. in Mus. Paris. ; Blackwall, Brewster's Journ. 

 vi. p. 77 (1832). 



Gallinula ceesia, Spix, Av. Bras. ii. p. 73, t. 95. 



Rallus ccEsius, Sw. An. in Men. p. 335. 



Rallus immaculatus, Licht. Doubl. p. 79. 



Supra oleagineo-brunneus : f route, capitis laterihus et corpore subtus 

 plumbeis ; gula albicante : ventre into, tibiis et Cauda nigricanti- 

 bus : rostro recto, unicolori, obscure viridi: long, tota 10"0, 

 alte 4-8, cauda 2*3, rostri a rictu 1-9, tarsi l*/. 



Hab. Brasil. merid. orient. ; Minas Geraes {Spix) ; S. Paolo et 

 Bahia {Licht.) ; Paraguay {Azara). 



Mus. Brit., S. & G. 



Genus 2. Aramides. „ 



Aramides, Puch. R. Z. 1845, p. 277 A. cayennensis. 



Ortygarchus, Cab. in Schonib. Guian. iii. p. 759 A. cayennensis. 



