390 MESSRS. SCLATER AND SAI.VIN ON [^pf. 4, 



Querquedula torquata, Hartl. Ind. Az. p. 28 (1847) ; Gray, List 

 Gall. Grail. & Ans. B. M. p. 139 (1844); Scl. P. Z. S. 1867, 

 p. 335 (Chili) ; Sol. & Salv. P. Z. S. 1869, p- 635 (Buenos Ayres), 

 et Nomencl. Av. Neotr. p. 129. 



Pato ceja blanca, Azara, Apunt, no. 442 (Paraguay), undo 



Anas leucophrys, Vieill. N. D. v. p. 156 (1816), et Enc. Meth. 

 p. 354 (1823) ; Hartl. Ind. Az. p. 28 ( $ ). 



A. rubidoptera, Dubois, Orii. Gal. p. 90. pi. Ivii. ( c? et $ ) (1839). 



A. rhodopus, Merrem, Ersch. & Grub. Enc. sect. i. vol. xxxv. 



Supra terreno-fusca, pileo et cervice in semitorquem posticmn 

 utrinque expansis, teetricibus alarum minoribus, dorso postico 

 et Cauda supra nigerrimis ; scapularibus pure castanets ; alls 

 fuseo-nigris, plaga magna in seeundariorum teetricibus nivea, 

 secundariis ipsis extus viridi-ceneis ; subtus capitis lateribus 

 cum gutture sordiJe albisfusco striolatis ; pectore rosacea induto 

 et nigra sparse guttata ; ventre et hypachondriis albis griseo 

 tenuissime transfasciolatis, crisso medio nigra plaga utrinque 

 nivea ornato ; rostra nigra, pedibus Jlavissimis : long, lata 14'0, 

 • alee 7"2, caudce 2'7, tarsi I'l, rostri a rictu VI . Fern, fusca, 

 superciliis et stria capitis utrinque cum gula et colli lateribus 

 albis; subtus alba fusco transfasciata ; alis et cuuda nigris ; 

 secundariis extus viridi-ceneis ; alis macula magna alba, sicut 

 in mare, ornatis ; rostra rubra, pedibus jlavis . 

 Hab. Paraguay (^^■arfl) ; Buenos Ayres (iyMc?50w). 

 This fine Duck, for our first knowledge of which we are indebted 

 to Azara, is rather scarce in collections, and has yet only been re- 

 cognized in few localities. Azara obtained examples of both the 

 somewhat dissimilar sexes in Paraguay, and described them under 

 different names, as was first pointed out by us (P. Z. S. 1869, p. 635) 

 from Mr. Hudson's specimens collected near Buenos Ayres. Philippi 

 and Landbeck (Cat. Av. Chil. p. 94) deny the occurrence of tliis 

 Duck in Chili, which Sclater had given on the authority of certain 

 specimens in the French national collection marked " Chili, Gay." 

 But we now know full well that Gay's localities are utterly untrust- 

 worthy. 



10. QuERaUEDULA BRASILIENSIS. 



Anas brasiliensis, Briss. Orn. iv. p. 360, unde 



A. brasiliensis, Gm. S. N. i. p. 517 (1788) (Brazil) ; Max. Beitr. 

 V. p. 936 (Brazil) ; Cab. in Schomb. Guiana, iii. p. 762 (Guiana) ; 

 Burm. Syst. Ueb. iii. p. 437 ; J. fiir Orn. 1860, p. 267 ; La Plata- 

 Reise, ii. p. 517 (Tucuman) ; Schl. Mus. des P. B. Anseres, p. 61 ; 

 Reinh. Fugl. Bras. Camp. p. 21 (1870) (int. Brazil). 



Querquedula brasiliensis, Scl. & Salv. P. Z. S. 1869, p. 635 

 (Buenos Ayres); Nomencl. p. 129; Pelz. Orn. Bras. p. 320 (1870). 



"Q. erythrorhyncha, Spix," Eyton, Mon. Anat. p. 127 (1838) ; 

 Darwin, Voy. Beagle, iii. p. 135 (1841) (Buenos Ayres and Straits 

 of Magellan). 



Ipicutiri, Az. Apunt. no. 437 (Paraguay), unde 



