PREFACE vii 



27, 28, 29, and 30, illustrating Chapter X, and also to 

 thank Messrs. Veitch for the use of figures 33, 34, 35, 40, 

 and 42. I have copied figures 4 to 8, 1 1, 19, and 20 

 from the drawings made by Philip Henry Gosse, F.R.S., 

 and published by him in that wonderful little book " Marine 

 Zoology," now long out of print. I have also borrowed 

 my frontispiece from the book on " The Aquarium " by 

 that great naturalist and lover of the seashore. Many 

 beautiful coloured plates of marine animals executed by 

 his skilful hand are to be found in that and other works 

 published by him. 



E. R. L. 



16 June 191 5 



