CLASSIFICATION OF DIPTERA. It 
3. Roeselii—lepidoptera. 
4. Reaumurii—proboscidea. 
5. Frischii—coleoptera. 
He started by changing the Linnzan names Hemiptera, Hymen- 
optera, Diptera to Proboscidea, Aculeata, and Halterata respectively. 
His first order (Lucifuga) included the Crustacea ; the second the 
Halterata, Aculeata, and Caudata; the third the genus Sphinx, 
Phalena, and Papilio. The two last divisions were respectively 
divided into terrestrial and aquatic. 
Another author who greatly improved this study was Schaeffer, 
who in his publications between 1764 and 1777 gave to the world 
some valuable instruction in the mode of insect-collecting and in 
the description of the microscopes used. He also described a large 
number of species to illustrate his system of classification, which 
differed considerably from the Linnzean method, and which became 
of some repute. He formed seven orders, the characters of which 
it is not possible to give here. The following are the seven orders : 
I. Insecta coleoptero-macroptera. 
2 3,  coleoptero-microptera. 
3- 5, coleoptero-hymenoptera =hemiptera. 
4. 5, hymeno-lepidoptera. 
5- 5, . hymeno-gymnoptera, 
6. 5, diptera. 
7 3 aptera. 
About the latter end of the eighteenth century a good many lists 
of species had been published, both in England and abroad, and the 
science of entomology made great strides, but as yet no specialists 
of any repute had come forward. Entomologists were, in fact, only 
finding out some systematic base to work upon. As we have already 
seen, a large number of varied modes of arrangements had been 
formed, only one of which, the Linnean, being taken into any 
account at the present day. A man destined to overthrow the 
Linnzan system for a short time, and whose classification is still 
considered of great value, appeared at this period, namely, Fabricius, 
who in 1775 brought forward his novel classification in his work 
entitled “Systema Entomologica.” The mode of classification that 
he adopted was by the characters of the mouth parts. He continued 
to publish a large number of systematic works, each one containing 
a modified arrangement of the preceding, and in his last work the 
insects were divided into the following thirteen orders: 1. Zleu- 
therata; 2. Ulonata; 3. Synistata; 4. Pieszata; 5. Odonata; 6. 
Mitosata ; 7. Unogate ; 8. Polygnata; 9. Kleistagnata ; 10. Exoch- 
mata; 11. Glossata; 12. Rhyngota; 13. Antliata, 
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