136 
MOHEKtJ SYSTEM. 
** PTEUOPJIORA ; Haustellata. With wings and a haustellum. 
Section 5. IIalteriptera. Wings with poisers. 
6. Lepidoptera. Wings with powder. 
7. Hemimeroptera. Wings partly obscure, partly diapha- 
nous. 
*» AFTER A; Haustellata. Without wings ; with a sucker. 
8. Ropiioptera. Sucker sharp. 
mm APTERA; Mandibulata. Without wings, with jaws. 
9. Pododusera. Legs formed for running. 
In 1800, Cuvier, with the assistance of Dumeril, published his 
Anatomic Compar'ce, in which the organization of Insects is treated of 
at great length. 
In 1801, J. R. Lamarck produced his Systcme dcs Animaux sans Per- 
fibres, in which work he has arranged some of the genuine Insects 
with the Arachnoida ; the rest he distributes into the following Orders ; 
'* With mandibles and jam. 
Order I. Coi.r.opTEKA. II. Orthoptera. III. MeurOptera. 
** With mandibles, and with a kind of proboscis. 
Order IV. IIymenoptera. 
*** No mandibles. A trunk or sucker. 
Order V. Lepidoptep.a. VI. IIemiptera. VII. Diptera. VIII. A- 
ptera. 
In 1806, Latreillc published his Genera Crustaceoriim et Insectorum, 
in which he has denominated the true Insects Insecta Pterodicera \ 
and has arranged them in the following manner : 
Century I. ELYTIIROPTERA. 
Elytra two, covering the wings entirely, 
Cohors I. Odojjtota. 
Mouth with mandibles, maxilla:, and lip. Wings folded, 
Order I. Coleoptera. II. Orthoptera. 
Cohors II. Sipiionostoma. 
Order III. IIemiptera. 
Century II. GYMNOPTERA. 
Wings naked. 
