Fulgoroidea Aciiilidae 
5 
of the world: Notably, Fitch, Uhler, and Van Duzee in the United States; 
Distant and Melichar for the Oriental Region; Fowler, Fennah and Uhler 
for Central America and the West Indies; Kirkaldy and Jacobi for Aus¬ 
tralia; and Uhler and Matsumura for the fauna of Japan and Formosa. 
GEOGRAPHICAL DISTRIBUTION 
The species of this family are widely distributed in all parts of the world 
save the extreme Arctic and Antarctic regions. This family reaches its 
greatest development, however, in the tropical regions and the warm tem¬ 
perate regions. Most of the species seem to be very highly localized in their 
distribution and are often overlooked in general collecting. Some of the 
North American species occur beneath the bark of decaying logs where 
they seem to feed on the fungi growing there. Other species, though they 
feed on trees and shrubs, seem to spend much time in the litter on the 
ground and can be overlooked easily in the usual methods of collecting. 
The faunas of North America, Central America, Japan and India are fairly 
well known, but vast regions of the world have hardly been explored. The 
geographic distribution of each species is indicated by superscript figures at 
the end of the lines, which correspond to geographic regions designated by 
the same superscript figures. In general we have indicated the distribution 
as given by the author of the reference, using the country as the smallest 
unit except in the larger countries, where states and provinces are used as 
the smallest units. In the larger island groups the individual islands are 
indicated wherever possible, in view of the importance of island endemism. 
FORM OF THE PRESENT CATALOGUE 
This catalogue follows the general form of the present series. The family 
is divided into subfamilies, and the genera are arranged under each category 
in as nearly a phylogenetic order as our present knowledge will permit. 
The species are arranged under the genera in alphabetic sequence. Titles of 
books are not abbreviated but are condensed if they are unduly long. The 
abbreviations of journal references follow in general the scheme proposed 
in the World List of Scientific Periodicals with minor exceptions, the chief 
difference being that the names of countries, states, cities and other geo¬ 
graphical units are not abbreviated. A few references are listed under their 
titles rather than under the abbreviations of the journals in which they were 
published, because in these cases the titles are usually better known than 
the journals, for example, Van Duzee 1917, Catalogue of Hemiptera of 
America North of Mexico, not Techn. Bull. California Agr. Exp. Sta. Ent. 2. 
If the journal has been published in series the abbreviation of the journal 
is followed by a scries number or by such an abbreviation as n. s. (new 
series), o. s. (old series), n. f. (neue Folge) or the like. This is followed by a 
note indicating the nature of the reference. 
