Ibises of the Genus Theristicus. 503 



of the genus Theristicus, the subject of which I propose to 

 treat in this paper. 



As ah'eady stated, Graf von Berlepsch and M. Stolzmauu, 

 in their paper mentioned above, have treated of the differences 

 between T. ynelatiopis and T. caudatus, and of their geo- 

 graphical distribution. They have shown that the first 

 species inhabits the southern and western parts of South 

 America, from Magellania and Patagonia to the western 

 side of the Andes in Chile and Peru as far north as lea and 

 Chorillos, while the other species inhabits the northern and 

 eastern parts of South America from Cayenne and British 

 Guiana westward to Venezuela and Colombia, and south- 

 ward to Brazil, Paraguay, Uruguay, and the northern part 

 of the Argentine Republic. 



To the two species already mentioned must be added a 

 third, Theristicus branickii Berl. et Stolzm., peculiar to the 

 highlands of Peru and Ecuador, which, so far as we know 

 at present, extends from Pitumarca, near Tinta, in Peru, to 

 Vallevicioso in Ecuador. 



Besides these, as already mentioned, Dr.Finsch has described 

 quite recently a Theristicus columbianus, from a specimen 

 contained in the Leyden Museum, received from the Parisian 

 dealer Deyrolle, as coming from Colombia, but without 

 any collector's name. Dr. Finsch observed that no species 

 of the genus Theristicus was known from Colombia, 

 previously to his publication ; a statement not correct, as 

 Berlepsch and Stolzmann in 1892 had already mentioned 

 specimens of the genus Theristicus from Colombia as 

 contained in the Berlepsch Museum, which had been identi- 

 fied with T. caudatus. Graf von Berlepsch has very 

 kindly sent me for inspection these specimens, one of which 

 is from Antioquia, and also two from Venezuela, col- 

 lected by Mr. G. K. Cherrie at a place named Altagracia. 

 These specimens from Colombia and from Venezuela do 

 not at all show the characters attributed by Dr. Finsch 

 to his T. columbianus, viz., the wing-coverts and the hidden 

 base of the secondaries grey, instead of white, as in T. cau- 

 datus, to which species they certainly belong. Dr. Finsch, 



2 M 3 



