IV PREFACE. 



carefully selected number of the types of the larger groups. But 

 the exhibition of very complete series, supplemented by models 

 or figures, to illustrate the remarkable life-history of some of 

 these animals, also of specimens of the Worms which possess a 

 special interest from their relation to man, render this Gallery 

 particularly instructive to the student. 



In the preparation of this Guide I have received much assistance 

 from Mr. E. A. Smith and Mr. F. J. Bell, the Assistants in 

 charge of these Collections. 



ALBERT GUNTHER, 



Keeper of the Department of Zoology. 



British Museum, N. H., 

 April 14, 1887. 



TO THE SECOND EDITION. 



The present (second) issue of this ' Guide ' is a reprint of the first, 

 with scarcely any alterations. 



ALBERT GUNTHER, 



British Museum, N. H., 

 .March 1, 1888. 



i 



