390 INSECT MISCELLANIES. 



III. Insects with no Jaws, but having a Sucker. 



5. With powdery wings — moths, &c. (LepidopteraJ, 



6. With upper wings of unequal consistence — 



bugs, &c. (Hmniptera). 



7. With two wings — flies, &c. (Diptera). 



8. Without wings (Aptera). 



THE OVARY, OR EGG SYSTEM. 



It has been recently proposed to arrange all animals 

 according to the structure, &c. of their eggs {ovcl) ; 

 and, in accordance with this principle, an ingenious 

 arrangement has been constructed by a venerable 

 and enthusiastic inquirer, from which we shall give 

 what relates to certain insects forming* the eighth 

 class. 



Sir Everard Home's Classification. 



Metamorphogenoa, 



Having the embryo produced from an egg which is 

 formed in the ovarium, subjected to transformation, 

 and breathing by air-tubes {spiracula) ; heart wanting ; 

 blood white. 



1. The embryo developed from eggs attached under 

 the tail. Lobster (Cancer). 



2. The embryo developed from eggs carried upon 

 the anterior feet. Spider (Ara7iea). 



3. The embryo developed from eggs deposited under 

 the cuticle of the skin or stomach. Gadfly 

 (Oestrus). 



4. Embryos developed from eggs for several ge- 



nerations, impregnated at the same time. Plant- 

 louse (Aphis). 



5. Embryos, produced from eggs of one mother, 

 that compose the whole republic. Bee (Apis). 



6. Embryos from eggs deposited under water. The 

 water-moth (Phryganea). 



