CHIEF ENTOMOLOGICAL CLASSIFICATIONS AND SYSTEMS. 1)07 



1. Coleoptera, Lin., without Forjtcula Elentherata, Fab. 



(a. Ulonota, F. 



2. Hemiptera, Lin. . . . \ , 



l?>. Rhyngota, F. 



3. Lepidoptera, Lin. . . Glossal a, F. 



4. Neuroptera, Lin. (to which Termes, { a. Odonata, F. 



Lepisma, and Podnra are added) i 6. Synixtala, F. 



5. Hymenoptera, Lin. . . . Piezata, F. 



6. Dzp/erfl, Lin. (with Pedicitlus and Acnrus) Aniliata, F. 



'a. Unogata, F. 



6. Agonata, F. 



7. Avtera, Lin. (without the above-named 



< c. Mitosata, F. 

 apterous genera) . . , 



J Kleistagnatka,F. 



^ e. Exoclmata, F. 



According to this grouping, which, indeed, removes several of the 

 deficiencies of that of Fabricius, the large Helwig-HofFmannseggian 

 collection was to be arranged, and thus made the basis of a detailed 

 elaboration of entomology, but its execution was prevented by political 

 events. 



Clairville * published almost contemporaneously with this essay of 

 Illiger's a subdivision of insects, which, although it had no influence 

 upon the progress of the science, yet merits a short notice. It was 

 the following : 



I. Insects with wings. Pterophora. 



A. With mandibulate oral organs. 



1. Anterior wings horny. 1. Ord. Elytroptera (beetles). 



2. . . coriaceous. 2. Deratoptera (Orthoptera). 



3. Wings with reticulated 3. Dictyoptera (Neuroptera}. 



nervures. 



4. Wings with ramose 4. - Phleboptera (Hymenoptera}. 



nervures. 



B. With haustellate oral organs. 



1 . Wings and halteres. 5. Halleriptera (Diplerd). 



2. . . covered with scales. 6. Lepidoptera. 



3. . . variously constructed. 7- Hemimeroptera (Hemiptera). 



II. Insects without wings. 



1. With suctorial oral organs. 8. Ehuphotera. 



2. With mandibulate oral 9. Pododunera. 



organs. 



* Entouiologie Helvctique. Zuv. 1798 1806, 2 vol. 8vo. 



