iV PREFACE. 
rematkable forms discovered since the first publication of 
d 
the “ Naturalist’s Library” have been added. The wood- 
cuts have also been re-drawn from actual specimens. ‘The 
Editor acknowledges with pleasure the pains which Mr, 
Lydekker has taken to give a full account of the two Orders | 
contained in the present volume, and also the liberality of 
the publishers in the matter of the illustrations. 
R. BOWDLER SHARPE. 
