261 



Apterygota 



Anapterygota 



Classification of Insects. 



Name suggested. 

 Aptera . . 

 Apontoptera, new name. 



Lipoptera, new name 

 Ellipoptera, new name 

 Aphaniptera . 

 Orthoptera .... 

 Plecoptera .... 

 Psocoptera, new name 



Isoptera^ 



Exopterygota ■! 10. Embioptera, new name, 



11. Ephemeroptera, new name 



12. Paraneuroptera, new name 



13. Thysanoptera 



14. Hemiptera . 



15. Neuroptera . 



16. Mecaptera . 



17. Trichoptera. 



18. Lepidoptera 



19. Coleoptera . 



20. Strepsiptera 



21. Diptera . . 



22. Hymenoptera 



With regard to the classification of these Orders I may remark 

 that the group Endopterygota comprises all the holometabolous Orders; 

 and the Exopterygota all the hemimetabolous Orders. These two cate- 

 gories are therefore in a certain sense natural and may he adopted. But 

 with regard to the Apterygota and the Anapterygota of Sharp this is 

 not the case. The Aphaniptera are — so far as the evidence at present 

 goes — holometabolous and are unique inasmuch as they combine the 

 absence of wings with a complete metamorphosis. At the same time 

 it will be remembered that in most, if not all, of the endopterygotic 



Endopterygota 



Old name. 

 Thysanura. 

 Collembola. 



Mallophaga. 



Anoplura. 



Siphonaptera. 



Orthoptera. 



Perlidae. 



Psocidae. 



Termitidae. 



Embiidae. 



Ephemeridae. 



Odonata. 



Thysanoptera. 



Hemiptera. 



Neuroptera. 



Panorpatae. 



Trichoptera. 



Lepidoptera. 



Coleoptera. 



Strepsiptera. 



Diptera. 



Hymenoptera. 



2 In a recent Paper (Zool. Anz. Bd. 26. 1903. p. 423) Dr. Enderlein suggests 

 the splitting up of the group Corrodentia of Brauer into three sub-orders 1) the 

 Isoptera which according to him includes both the Termitidae and the Embiidae. 

 Folio-wing Dr. Sharp's classification I have suggested that the Isoptera be confined 

 to the Termitidae and have proposed the new name Embioptera for the Embiidae, 

 2) Dr. Enderlein 's second sub-order the Copeognatlia includes the Psocidae which 

 in accordance with the wish to change as little as possible and to make all Insect 

 Orders end in " ptera '' I have called Psocoptera, 3) his third sub-order is Mallophaga 

 for which I propose the name Lipoptera. 



