GENERAL 

 CLASSES. 



rl. Four Wings 

 without wing- 

 cases 



fi. 



Having 

 wings 



5 ) 



w< 



II. Two Wings 

 covered by two 

 wing-cases 



II, 



Without 

 wings ^ 



ORDERS. CLASSES. 



f I. Wings covered with scales. 

 Tongue spiral. LEPIDOPTERA. 



II. Wings membranous, naked. 

 Mouth without teeth or tongue. 

 TRJCHOPTERA. EPHEMERINA. 



III. Wings membranous, equal, 

 reticulated. Mouth with teeth. 

 Rest of NEUROPTERA. 



IV. Wings membranous unequal, 

 nervures mostly longitudinal. 

 Mouth with teeth. A sting or 

 borer in the female. HYMENO- 

 PTERA. 



V. Wings membranous. Tongue 

 bent under the breast. HOMO- 

 PTERA Leach. 



"VI. Elytra half coriaceous and 

 half membranous, crossed. A 

 pair of membranous wings. 

 Tongue bent under the breast. 

 HEMIPTERA Leach. 

 j VII. Elytra coriaceous or semi- 

 crustaceous, aliform. A pair of 

 membranous wings. Mouth 

 with teeth. ORTHOPTERA. 



VIII. Elytra hard and crusta- 

 ceous. A pair of membranous 

 wings. Mouth with teeth. Co- 



LEOPTERA. 



IX. A pair of membranous wings. 

 A pair of poisers. Mouth with 

 a tongue without teeth. Di- 

 PTERA. 



X. A pair of membranous wings. 

 No poisers, tongue, or teeth in 

 the male. No wings but a 

 tongue in the breast of the/o 



L male. Coccus L. 



{XI. Rowings. Six legs. Mouth 

 with a tongue. APHANIPTERA. 



XII. No wings. Six legs. Head 

 and Trunk distinct. HEXAPOD 

 APTERA, TERMES, Psocus. 



XIII. No wings. 8 or 10 legs. 

 Head united to the trunk. Oc- 

 TOPOD APTERA, ARACHNIDA, 

 CRUSTACEA. 



XIV. Noivings. 14 Legs or more. 

 Head separated from the 

 trunk. POLYPOD APTERA. 

 CRUSTACEA. 



III. Two Wings 

 uncovered 



f IV. Undergoing a 

 metamorphosis 



V. Undergoing no 

 metamorphosis 



