THE MOUTH SYSTEM. 389 



9. With many jaws, without the lip closing the mouth, 

 (Kleisiagnatha) . 



10. With many jaws without the lip, covered by palpi, 



(Exochnata). 



D. 



11. Mouth with a spiral tongue, between reflected palpi 



butterflies and moths (Glossata). 



12. Mouth with a rostrum and a jointed sheath bugs, 



&c. (Ryngota). 



13. Mouth with a sucker without joints flies, &c. 



(Antliata), 



Cuvier's Classification. 



I. INSECTS WITH JAWS. 



1. Without wings crabs, spiders (Gnathoptera). 



2. With four equal wings dragon-flies, &c. (Neur* 



optera). 



3. With four unequal wings bees, wasps (Hymen- 



optera). 



4. With wing-cases beetles (Coleoptera) . 



5. With four straight wings crickets, &c. (Or~ 



thoptera). 



II. INSECTS WITHOUT JAWS. 



1. With upper wings of unequal consistence 



bugs, &c. (Hemiptera). 



2. With powdery wings butterflies and moths (Le- 



pidoptera) . 



3. With two wings flies, &c. (Diptera). 



4. Without wings fleas, mites, &c. (Aptera). 



Lamarck's Classification. 



I. INSECTS WITH JAWS. 



1. With wing-cases beetles (Coleoptera). 



2. With straight-wings crickets, &c. (Orthoptera) . 



3. With four equal wings dragon-flies (Neurop- 



tera). 



II. INSECTS WITH JAWS AND A SORT OP SUCKER. 



4. With four unequal wings bees, &c. (Hymen- 



opt era). 



2L3 



