CONTENTS. 



Pebpacb to Fikst Edition 



Pebfaob to Second Edition . 



List op Conteactions 



Conspectus of Gbneka 



Dbsceiption of Species . 



Glossaet . . . , 



Index to Geneea and theie Synonyms 



vn 



xi 



1 



43 



235 



239 



