( 102 ) 

 1!>T. Sterna superciliaris Vicill. 



Sterna siijxrciliark Vieillot, iVowr. Dirt, xxxii. p. 176 (1819.— ex Azara no. 415 : Paraijuay). 



No. 2197. S ad. (in nnptial p]nmage), Rio Ardguaya, June lOOO.—Wiii}' 185 ; 

 tail 81 ; bill 3S mm. 



Identical with specimens from Argentine (Mocovi — Veuturi coll.). 



198. Phaetusa magnirostris (Lcht.). 



Stenm marjnirostris Licbtenstein, Verz. Dull. Berliner Mus. p. 81 (182:!.— "Brasii "). 



No. 2320. ¥ ad., Rio Araguaya, Jnly 1906. 



199. Rynchops intercedens Sannd. 



mi/nchnjis iiitercedeiix Saimder.s, null. B.O.C. iv. p. xxvi. (March 1895.— type ex S Paulo Brazil • 



cf. Cat. B. Brit. .)/».«. XXV. 18<)G. p. loG). 

 Rhjnchops nigra (aec Linn.) Pelzeln, Zur Ontitli. Bras. in. 1809. p. 324 (Araguay). 



Nos. 2198, 2213. <? ? ad., Rio Aragnaya, Jane 1906.— Wing 390, 370; tail 

 130, 11.5 ; bill (upper mandible) 74, 03 mm. 



These birds agree perfectly with others from S. Paulo and Buenos Aires. 

 The axillaries and under wing-coverts are white or barely shaded with greyish, 

 the rectrices broadly edged with white, especially on the outer web, the outermost 

 pair being almost entirely white; and the inner web as well as the apical half 

 of the outer web of the secondaries are also white. 



I expect that all the American " species " of B///^c-/wps will prove to be 

 geographical representatives, in which case the South Brazilian form would have 

 to stand as Rynchops nigra intercedens Saund. 



200. Palamedea cornuta Linn. 



Palameden cornuta Linnaeus, Syst. Nat. xii. 1. p. 232 (176G.— "Brasilia, Guiania"— we accept 

 Eastern Brazil (ex Marcgrave) as typical habitat). 



No. 2412. ? (in change of plumage), Rio Aragnaya, August 1906. 



The feathers along the shoulder edge are clear buff. 



This species is by no means confined to " Gniaua, Venezuela and Amazonia," 

 as stated in the Cat. of Birds xxvii. p. 4, but ranges all over Brazil, for Natterer* 

 obtained specimens near Ypanema in the State of S. Paulo; and Prince Wied t 

 records it from the Rio Belmonte, in the southern part of Baliia. 



* .See Pelzeln, Zur Ornitli. Bras. iii. 18611, p. 31.S. 

 t Bntr. Natiirg. Bratil. iv. 18:i2. p. E;»a 



