PREFACE XV 



very few exceptions, new, and have all been drawn specially 

 for this work by my friend Lieut. -Col. W. P. C. Tenison. I take 

 this opportunity of offering him my sincere thanks, not only 

 for the great care that he has taken in their preparation, but 

 also for the kindly interest he has shown in the book since its 

 inception. We have been content to make the drawings as 

 simple as possible, believing that it is better to show the salient 

 and characteristic features of the fishes rather than to produce 

 an artistic effect. Those illustrations copied from other works 

 are duly acknowledged in their place, and I am especially 

 indebted to Mr. Arthur Hutton, Professor F. B. Sumner, and 

 to Professor Johannes Schmidt, for permission to reproduce the 

 photographs appearing in plates 1, l.i and IV respectively. 



It only remains for me to tender my grateful thanks to my 

 colleague Mr. M. Burton for the trouble he has taken in reading 

 through the greater part of the manuscript, and for many 

 helpful suggestions and criticisms; to Dr. E. I. White, for reading 

 and criticising Chapter XVII; to Dr. E. S. Russell,iO.B.E., for 

 performing a like service in connection with parts of Chapters 

 XIX and XX; and to Mrs. Tenison for assistance in the task 

 of passing the proofs for press. Finally, I find it impossible to 

 allow this opportunity to pass without recording the great 

 debt which I owe to Dr. C. Tate Regan, F.R.S., the Director of 

 the British Museum (Natural History) ; his very great know- 

 ledge of matters ichthyological has always been at my disposal, 

 and the many valuable hints and suggestions that he has given 

 me from time to time since my appointment to the museum 

 ha\'e proved of the greatest assistance to me in my work there, 

 and without them it is certain that the writing of this book 

 would have proved a very difficult task. 



J. R. NORMAN. 



London, 1931. 



Certain sections of Chapters II, III, and XI have already appeared in the 

 Salmon and Trout Magazine, and are reproduced here by permission of the 

 Editor, 



