TP SITITIGSI PLease aed FE Q ik EL se { D4 Pit | of | INTRODUCTION. ; Re ee ; -imaries with the tips prolonged i feather-like ; wings rather lengthened and concave ; first and second primé ps | nged into a six sey -imaries the longest; feet scansorial. narrow spatulate form ; the sixth and seventh primaries equal, and gest; fi g The members of this genus are more widely distributed over South and Central America than those of any other section of the family ; for although it is in Brazil, and particularly in the forests clothing the delta of the Amazon, that the greater numbers exist, some of the species are found as far south as Para- guay; and one as far north as Mexico. The warmer forests, both on the eastern and western sides of the Andes, are equally tenanted by them. The species are : 1. Ramphastos Toco. : : : : Pie 2. ————— __ carinatus : PIA 3. —————. breyicarinatus : : : : Plo he 4, ————— Tocard : : ‘ PI 5. —————_ ambiguus : ; : : : Pla 6. ——_——— erythrorhynchus_ . ; : PI WVikE 7. ———_—— Inca . ; : : : : : PL Vit eon : : : : : Pl. Vite 9. ————— citreolemus : , ; : Pix 10. —————_ osculans : : : : ; PER 11. ——-——— culminatus cere : , Pl. XE 12, ——_—_—— Ariel . : ; : : : Pl. Xo 13. —————_ vitellinus : y : Pl. XII. 14. ——-_——— dicolorus , : : Pl. Xd¥2 For the Aracaris, [lliger’s genus PTEROGLOSSUS, WITH THE FOLLOWING CHARACTERS :— Rostrum, amplum ; ; Sas . : : , amplum, tenue, cultratum, basi margine incrassato ; maxillz angulo frontali obtuso; tomia serrata; nares altiores et in maxille basi posite ; lingua mediocris, angusta, pennacea ; ale concave, breviores, secundum