26 INTRODUCTION. 
Precisely the same remark may be made with respect to his new genus Ramphoxanthus for Aulaco- 
ramphus prasinus and A. albwitta, inasmuch as they do not in my opinion offer sufficient generic differences 
to warrant their separation from the other birds with which I have associated them. 
The birds comprising his genus Piperivorus I consider to belong to three distinct genera. The first 
—piperivora —is a true Selenidera —the fourth, Bailloni —an Andigena ; the second and third— viridis and 
inscriptus —-might perhaps be separated ; but in that case viridis would stand alone in one genus and 
inscriptus with Humboldti in another, for which the term Grammarhynchus might be an appropriate 
appellation. 
