INTRODUCTION. 20 + ave: first and sect srimaries with the tips prolonged j feather-like ; wigs rather lengthened and concave ; first and second primé ps prolonged into a eather-like ; . i aoe » longest ; scansor w spatulate form ; the sixth and seventh primaries equal, and the longest ; feet Seauaamae narrow spatute 2 = is genus are ‘o widely distributed over South and Central America than th The members of this genus are more widely disti e ie y = ers Paras ‘ pete ee ees ae 3 he family ; for although it 1s 10 Brazil, and particularly in the forests clothing the of any other section of t delta of the Amazon, that the oreater numbers exist, some of the species are found as far south as Para. c t ’ 5 ouay: and one as far north as Mexico. The warmer forests, both on the eastern and western sides of the ata) © ; Andes, are equally tenanted by them. The species are :— 1. Ramphastos Toco. : PL 9, _—_———_ carinatus : j Pi. ib 3, _———— brevicarinatus : : : Pi. 1G 4, ——_——— Tocard ; : : Pl. 1 D. ambiguus : : : Ph. ¥ 6. erythrorhynchus : : PIV 7. ————_ Inca. : Pl. Vu ee _Onviert : ; : Pl. VIII. 9, —_—_——_ citreoleemus : PL DS 10. ————— osculans : , : PE Xe 11. ————— culminatus ; Pl. X# 12. ———_—— Ariel . . Pl. XE 13. ————— vitellinus ; . : Pl. XO8 14, ————— dicolorus é; : Pl. X13 For the Aracaris, Illiger’s genus PTEROGLOSSUS, WITH THE FOLLOWING CHARACTERS :— Rostrum r | c d d assc tilt, am plum, te 1ue cultr t im SI] i 1 | E atu basi I argir e incrassato 5 ] i i : ‘ , ? | 3 ; 5 maxillé angulo tr ontali optus } altiore s et In mMaxille basi p SI ce U t e Ss Ss o aC€d we conca ill S OS1Te ; 1 i 3 ingua m diocris ’ angusta, pel acea ; a 0 b