358 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



A. APTERYGOTA. 



1. COLLEMBOLA. 



Spring-tails. 



2. Thysanura. 



Bristle-tails. 



B. PTERYGOTA. 



i. § § 

 I as 



4. 



6. 



7. 



10. 



11. 



12. 



13. 



14. 



15. 



Dermaptera. 



" 







Earwigs. 









Orthoptera. 





> 





Cockroaches, Locusts, 





tej 





Crickets, etc. 



HOMOMORPHA. 



CD 





Platyptera. 





93 





Book-lice, Termites, 



Young animal re- 



O 





Stone-flies, etc. 



sembling adult in 







Thysanoptera. 



- general form but 



o 





Thrips. 



distinguished by the 



J»' 





Plectoptera. 



absence of wings 



CD 





Mayflies. 



and external genital 



£ 





Odonata. 



armature. 







Dragonflies. 





&' 





Hemiptera. 





o 

 o 





Bugs, Cicadas, 





B 





Green-fly, etc. 



i 



cd" 



o 



Neuroptera. 





CD 





Alder-flies, 





O 





Lacewing-flies, etc. 





a 

 o 





COLEOPTERA. 





B 





Beetles. 



Heteromorph A . 



CD 





Trichoptera. 





CD 





Caddis-flies. 



Larva? differing 



P 





Lepidoptera. 



_ very greatly from 



3 





Butterflies and Moths. 



the adults and al- 



P 

 ^ 





DlPTERA. 



ways passing into 



cc 





Flies, Fleas, 



a pupal stage. 



M 



CD 





Sheep-ticks. 





CO 

 CD 



B 





Hymenoptera. 





c* 





Ants, Bees, Wasps, Saw- 









flies, &c. 



j 







