( 6 ) 



Turning now to this irregular volume, which must be con- 

 sidered an extra one, the Editor would earnestly entreat his 

 readers to begin by going carefully through the 1st Appendix, 

 Addenda and Corrigenda, and correcting by this the errors in 

 the text. He has taken the utmost pains with this list, but the 

 indigenous devil has been too strong for him, and the number 

 of errors that have, despite the greatest care, escaped notice 

 (some of them entirely vitiating the sense of the passages in 

 which they occur) is very grievous. 



, It will be observed that the form of index has been changed. 

 Hitherto two separate indexes, both of specific names only, have 

 been given — the one of all species mentioned in the volume, 

 the other of those species only that have been therein described, 

 or discriminate d 



Many subscribers have objected, first to the double indexes, 

 second to these being arranged only by specific names. 



In deference to these remonstrances, the Editor has deter- 

 mined henceforth to have only a single index, in which every 

 species noticed will be indexed both by specific and generic 

 names ; in fact an index similar to that appended to Count 

 Salvador's Uccelli di Borneo, which is the best form of index 

 that he has seen. He sincerely hopes now that no one will 

 write to him further on this subject, which is a very sore one 

 with him, as, unlike European Editors, he has to prepare every 

 index with his own hands — a by-no-means pleasing relaxation 

 for a busy man. 



A. 0. H. ? 



