CLASS V. INSECTA. 135 



he separated the Vermes, as Aristotle had done before him, and esta- 

 bhshed them as a class distinct from Insects. 



SchsfFer, in 1T41, published a valuable work, under the title Icones 

 Insectorum circa Ratisbonam indigenorum. The classiiication proposed 

 by the author differs entirely from that of Linne, and api)roaches in 

 some respects that proposed by Geoftroy. 



In 1764, Geoffroy published his most valuable System of Insects, 

 under the title Hhtoirc abngce des Insectes, &;c. in which these ani- 

 mals are arranged into six sections. 



In 1776, J. C. Fabricius, a pupil of Linue, published a new system 

 of entomolog}', under the title Si/stema Entomolug'ue, in which the 

 principles of a new mode of classification, founded on the organs of 

 deglutition and mastication, is for the tirst time developed. I'his sy- 

 stem, which has undergone several modifications, is named tlie Ciha- 

 rian Si/stcin. 



Scopoli, in 1777, published his Introductto ad Historiam Nuturalem, 

 in which work he divides insects into tive triljes, inider the singular 

 appellations of, 1. Sxcammcrdami-Z,ucifuga ; Q. Gcoffroi/-Gi/mnopte?'a; 

 3. Hocscl'd-Lepidoptcra ; 4. Reaiimiiru-Probuscidea ; .5. Frisch'd-Culeopteru, 

 identifying each tribe by the name of each author, who has, in his opi- 

 nion, been most successful in the explanation of that to which his 

 name is attached. 



The LuciJ'uga includes the lice ; Gymnoptera, his halterata, aculeata, 

 and caiidata : Lepidopfera, the moths and butterflies : Proboscidea he 

 has divided into terrestrial and aquatic ; and the Coleopiera he divides 

 into those inhabiting water, and those the land. 



In 1780, Linne produced the twelfth edition of his Systema Natwce, 

 which was the last systematic work of that illustrious naturalist. 



In 1793, P. A. Latreille published his Precis des Caructcres Gene- 

 riques des Insectes, in which he divided Insects into I. Aile's : 1. Cole- 

 opiera, 2. Orthopfera, 5. Hemiptera, 4. Neuroptera, 5. Lepidoptera. 

 II. APT.t^RES : 6. Suctoria, 7. Thas>/>iou7-a. 



In 1798, J. C. Fabricius produced his last general systematic work, 

 the Supplementum EntomologiiE Sj/stcmaticee, which presents an outline 

 of his system in its latest state; and which, being the result of much 

 knowledge, demands a considerable portion of attention. 



In the Eniomologie Hclvetique, a work published in 1798, Clairville, 

 its author, has arranged Insects in the following manner : 



* PTEROPHORA; jVIandieulata. With wings and jaws. 



Section 1. Elytroptera. Wings crustaceous. 



2. Deratoptera. Wings coriaceous. 



3. DicTYOPTERA. Wiugs rcticulatcd. 



4. PiiLEBOPTERA. Wiuiiis veiucd. 



