Ill 



There are some specimens in the Series that do not at present 

 exist in the National Collection, and others again which are new to 

 science, by far the greater number of the latter having been presented 

 by the late Capt. Sir Everard Home, who, next to Sir Joseph Banks, 

 must be considered as the largest contributor to the present Series. 



The arrangement which it has been thought best to adopt, 

 agrees, as far as possible, with that followed in the Osteological 

 Series, being a modification by Prof. Owen of the classification of 

 Johannes Miiller. 



Whilst the present Volume was in progress, a large number of 

 specimens were presented to the Museum, and others remained in the 

 possession of the College, which could not at the time be satisfactorily 

 identified. All these, however, have now been named, and added to 

 the Collection, every specimen having its proper place assigned to it 

 in the Appendix ; these specimens are distinguished from those 

 originally described by the addition of a letter. 



