Vm PREFACE. 



several species, and in determining their value as furnishing 

 specific characters. The drawings have been reproduced as 

 process blocks by David Stevenson & Co. I wish also to 

 express my thanks to the authorities of the Public Museum, 

 Dundee, of the Museum of Zoology, Cambridge, of the 

 Museum of the Royal College of Surgeons, England, for 

 permitting me to obtain drawings of three tympanic bones, 

 examples of which are not in the Anatomical Museum ; also 

 to the authorities of the Royal Scottish Museum, Edinburgh, 

 and of the Smith Institute, Stirling, for permission to examine 

 specimens in their collections. 



I refer also with pleasure to the grant of money, by the 

 Executive Committee of the Carnegie Trust, towards the 

 cataloguing of the Museum, which has made it possible to 

 produce this illustrated volume. 



WM. TURNER. 

 University, Edinburgh, 1912. 



