PREFACE. vn 



Marsh and Dr H. Woodward for fig. 35 ; (4) Dr C. H. Hurst 

 and Messrs Smith, Elder, and Co. for fig. 55. 



A few references are given, but no attempt has been made 

 to give anything like a complete list. The abbreviations 

 of the titles of periodicals are those used in the Zoological 

 Record. 



I have always referred freely to the textbooks treating of 

 the subjects dealt with, and in particular I should like to 

 mention that the section devoted to the skeleton of mammals 

 is, as it could hardly fail to be, to a considerable extent based 

 on Sir W. H. Flower's Osteology of the Mammalia. 



SIDNEY H. REYNOLDS. 



March 10, 1897. 



