INTRODUCTION. | 
Tuis Volume is devoted to the enumeration of eight families of Homoptera—the 
Cicadide, Fulgoride, Flatide, Derbide, Cixiide, Achilide, Isside, and Delphacide ; 
the first two have been dealt with by Mr. W. L. Distant and the remainder by 
Canon Fowler. Altogether 323 species are enumerated, of which 208 are treated 
as new, with twenty-five new genera. The other families of Homoptera are reserved 
for Vol. II. of this series, and considerable progress has already been made with 
them. The Index to the two volumes will be given at the end of Vol. II. Of the 
thirteen coloured Plates accompanying Vol. I., six have been drawn by Mr. Purkiss 
and the remainder by Mr. Wilson. In the Appendix, four species are illustrated in 
the text. 
Ep. 
March 1904, 
