first volume of FE tethices ae Severi lo 
des Hémiptéres’’, of which, moreover, ‘only two other volume” 
published, the series becoming defunct in 1896. In the: me" 
a large number of new genera and species has been | pl 
and many important synonymic changes effected. Undel 
circumstances, a new Catalogue is necessary. 
The present series differs from previous Catalogues i in 
important particulars : ) 
a 
fai 
1.-References are given to biologic, anatomic and § 
ral notes, and to descriptions of metamorp 
lists of foodplants, parasites, predators, prey, 
are added. | 
2. Fossil species are included. 
3. The Geographical distribution is somewhat det 
4. The nomenclature has been thoroughly revise 
the rule of priority, and the main part of the 
volume is prefaced by a discussion on nomencle 
5. There is a specific, as well as generic, Index to 
volume. 
The Heteroptera will probably be concluded in 6 or 7 Pas 
of approximately 350—400 pages each. The first volume, con 
the Cimicidae, and the second, treating of the Thyreou > 
Urolabididae, Aradidae and Coreidae, will be printed as 
as possible. 
To subscribers for the whole series the price will ; 
the rate of 80 Pf. per sheet (16 pp.); separate volumes A 
sold at the rate of M. 1 per sheet. egy 
