66 



CLASSIFICATION OF THE ANIMAL KINGDOM. 



OKDEK III. COLLEMBOLA. Smynthurus, Degeeria (fig. 61), 

 Podura. 



ORDER IV. THYSANURA. Campodea (fig. 61), Lepisma, 

 Machilis. 



SUB-CLASS II. HEMIMETABOLA. 

 ORDER I. HEMIPTERA. 



Sub-ord. 1. Homoptera. 



Fam. a. Cercopidas. Aphrophora. 

 Earn. 1. Fulgoridae. Fulgora (Lantern-fly). 

 Fam. c. Cicadidae. Cicada. 



Fam. d. Coccidse (Scale Insects). Coccus, Lecanium. 

 Fam. e. Aphididae (Plant-lice). Aphis, Chermes, Phyl- 

 loxera. 



Sub-ord. 2. Heteroptera. 



Fam. a. Notonectidse. Notonecta (Boat-flies), Corixa. 



Fam. &. NepidaB. Nepa (Water-scorpions). 



Fam. c. Gerridse. Gerris, Halobates. 



Fam. d. Hydrometridoa. Hydrometra. 



Fam. e. Eeduviidaa. Reduvius. 



Fam. /. Capsidaa. Capsus. 



Pig. 62. Hemiptera, A, Pentatoma rutilans, with the wings closed. B, Rliaphigaster incur- 

 nattis, with the wings expanded in flight : a, Anterior wing (heroelytron), with its basal por- 

 tion hardened by chitine ; 6, Posterior membranous wing. 



