] 36 MODEllN SYSTEM. 



** PTEROPIIORA; Haustellata. With wings and a haustcUum, 



Sections. IIalteriptera. Wings with poisers. 

 G. Lepidopteua. Wings with powder. 



7. IIemimlropteka. Wings partly obscnrc, partly diapha- 



nous. 



««: APTERA; Hausteelata. Without wings; with a sucker. 



8. RopnoPTERA. Sucker sharp. 



**** APTERA; Manpiijl'eata. Without wings, with jaws. 



9. PoDODUNEUA. Legs formed for runnin<r. 



Tn 1800, Cuvier, with the assistance of Diuneril, published his 

 Anafomlc Comparec, in which the organization of Insects is treated of 

 at great length. 



In 1801, J. B. I.amarck produced his Si/steme dcs Animaux sans I'cr- 

 i'tl>rt:i, in which work lu; has arranged some of the genuine Insects 

 witii xiie A7-uc/i7wida ; the rest he distributes into the following Orders; 



* With tnandiblcs andjarvs. 

 Order I. Coleoptera. II. Ortiioptera. III. NevrOptera, 



** With mandibles, and witli a kind of pTohoscis. 

 Order I\'. Uvmenoptera. 



*** Ko mandibles. A trunk or sticker. 

 Order \'. Lei'idoptera. \'I. IIemiptera. \'II. Diptera. A'III. A- 



PTERA. 



In 180G, Latreille published his Genera Crustaceorum et Inscctorum, 

 in which he has denominated the true Insects Insecta Ftcrodicera ; 

 und has arranged them in the followins: manner : 



Century I. ELYTHROPTERA. 

 Elytra two, covering the wings entirely. 



Cohors I. Odoxtota. 

 Mouth with mandibles, maxilla-, and lip. Wings folded. 



Order I. Coleoptera. II. Orthoptera. 



Cohors II. Siphonostoma. 

 Order III. IIemiptera. 



Century II. GYMNOPTERA. 

 Wings naked, 



