616 TAXONOMY. 



Omaloptcra from the Dipt era ? What [business has the genus 

 Nycteribia, which forms for him a separate order, Notostoma, in this 

 company, and which should be among the Acari with the Arachnides ? 



349. 



William Kirby, who, together with William Spence, has earned an 

 immortal fame in entomology, by their Introduction to this science, has 

 inserted in their fourth volume the following system. 



I. Insects with mandibles. Mandibulata. 



1. Order. Coleoptcra (like Linndeus and Latreille. Eleutherata, 



Fab.)- 



2. Strepsiptera, Kirb. (Rhiphiptera, Latr.). 



3. Dermaptera, Leach (Family Forjicula, Latr.). 



4. Orthoptera (like Latreille, but without Forjicula}. 



5. Neuroptera (like Linnaeus and Latreille, but without 



the Trichoptera). 



6. Hymenoptera (like Linnaeus and Latreille). 



II. Insects with suctorial mouths. Haustellata. 



7- Order. Hemiptera (like Linnaeus and Latreille). 



8. Trichoptera (Leach). 



9. Lepidoptera (Linnaeus and Latreille). 



10. Diptera (like Linnaeus and Latreille). 



11. Aphaniptera, Kirby (Suctoria, Latr.). 



12. Aplera (all apterous insects breathing through 



trachea?) . 

 * Hexapoda (Amelabola, Leach, Thysanura and Parasita, 



Latr.). 



** Octopoda (Arachnides, Tracheales, Latr.). 

 *** Polypoda {Myriapoda, Leach, Latr.). 



That many of the orders here partly adopted from Leach cannot be 

 justified upon principle, must be speedily discovered by every one upon 

 a close inspection. To separate the earwigs from the Orthoptera, on 

 account of the structure of their wings, is as wrong as it would be to 

 raise those beetles which have but half elytra into a distinct order. 

 Both principles of division are merely family characters. The same 

 may be said of the order Trichoptera, which has been equally 

 capriciously separated from the Neuroptera. If even the Phryganea 

 imbibe their food, yet are their oral organs formed upon the type of 



