(JOG TAXONOMY. 



f). Horny, strongly toothed, 5. Class. Odonatn (Lihellitl<v\ 



labium without palpi, 

 h. All without palpi. 6. Mitosala (Scolopendra.'). 



B. A pair of maxilla resembling 7- Unognta (scorpions and 



scissors. spiders). 



C. More than two pair of maxillae. 



1. Within the labium. M. Polygonata (Ixopoda). 



2. Outside the lip closing the 9. Kleistagnatha ( short- 



mouth, tailed crabs). 



3. Outside the lip, but covered 10. Exocknaia (long-tailed 



by the palpi. crabs). 



II. Insects with suctorial mouths. 



1. In the mouth a spiral tongue. 11. Glossata (Lepidoptera}. 



2. In the mouth a horny pro- 12. Rhyngota (Hemintera*). 



boscis, surrounded by joint- 

 ed sheaths. 



3. In the mouth a soft unjointed 13. Anlliata (Diplerci). 



proboscis. 



We perceive from this division that Fabricius had no idea of a 

 natural grouping, but that he separated from solitary characters when 

 he could. Thus forms the most allied were torn from each other, and 

 very different genera were forced into the divisions from one-sided 

 views ; thus for instance, the flea stands among the Rhyngota, with 

 which it has nothing in common but its suctorial mouth, whereas we 

 find the lice among the Antliata, although they pass through no meta- 

 morphosis. The character of the Odonata is erroneous, for the Libel- 

 lulee have one jointed labial palpi, and the character of the Synistata 

 does not agree with all, but merely with some genera. 



343. 



Nevertheless, the system of Fabricius had many followers, especially 

 because by means of it the genera were more correctly determined than 

 had previously been the case ; yet its being so unnatural and artificial 

 displeased many, and, therefore, Illiger * proposed uniting both systems, 

 that of Linnaeus with the latter, a proposition which he himself executed 

 in the following manner : 



* In the Appendix to his Kafer Preussens, vol. i. Halle, 1798. Svo. 



