PREFACE TO VOL. IV., FART I. 



Owing to the necessity of examining material that at present 

 is contained only in one or other of tlie Muscnms on the 

 Continent, there is likely to be some delay in completing the 

 present volume, which deals with some obscure and little- 

 known families of Rhynchota. On this account it has been 

 considered advisable to publish the volume in two j)arts. 

 Part I. gives an account of the Homopterous families 

 Membracidic and Cercopidse, and four subfamilies of the 

 Jassidre. Part II. will contain the remaining subfamilies of 

 the Jassidse, and an Appendix to the whole work. 



C. T. BINGHAM. 



November, 1907. 



