APPENDIX. 65 



CLASSIFICATION. 



Insects are by far the most numerous of animals living upon 

 the land, and many different views have been, and are, held as to 

 their classification, we may, however, recognise fourteen Orders, 

 viz. : 



Order i. COLLEMBOLA. Springtails. (Isotoma palustris). 



Order ii. THYSAXURA. Bristletails. (The Silver-fish, 



Lepisma saccharina. 



Order iii. ORTHOPTERA. Cockroaches, Earwigs, Leaf- 

 insects, Grasshoppers, and Crickets. 



Order iv. PLATYPTERA. Biting-lice, Termites, Book-lice, 



and Stone-flies. 



Order v. THYSAXOPTERA. Thrips. 



Order vi. HEMIPTERA. Bugs, Lice, Cicads, Green-flies 



and Scale insects. 



Order vii. PLECTOPTERA. Mayflies. 

 Order viii. ODOXATA. Dragonflies. 



Order ix. NEUROPTERA. Lacewing-flies, Golden-eye flies, 



and Scorpion-flies. 



Order x. COLEOPTERA. Beetles. 



Order xi. TRICHOPTERA. Caddis-flies. 



Order xii. LEPIDOPTERA. Butterflies and Moths. 



Order xiii. DIPTERA. Flies and Fleas. 



Order xiv. HYMEXOPTERA. Sawflies, Gallflies, Ichneumon- 

 flies, Ants, Wasps, and Bees 



