(vi) 



will be found printed in the Appendix. The drawings 

 have for the most part an artistic value of their own, 

 apart from their scientific importance, and the Autotype 

 process by which they have been reproduced is such as 

 to leave nothing to be desired as to perfect accuracy. 

 Special attention may perhaps be directed to the Plates 

 by Pkior, whilst others are from the hands of eminent 

 naturalists, such as the late Professor Phillips, Professor 

 Williamson, the late Mr. Denny, etc. 



Gr. A. LEBOUR. 



