In 1810 he divided them into two sections, the first containing For- 

 fieularias, Blattaria3 and Mantides, and the second Grylhdes, Locus- 

 tarijB and Acrydii. In 1817 he gave the name of Cursoria to the 

 first division, and that of Saltatoria to the second. In 1825 he 

 divided them again into three sections, differing materially from the 

 three into which he first separated them, viz. : 



Sect. I. Forficulariae. 



Blattariaa. 



Mantides. 



Spectra. 

 " II. Gryllides. 



LoeustarijB. 

 " III. Acrydites. 



In 1829 he returned to his arrangement of 1810, only dividing the 

 Mantides into two families, as in the last scheme. This method of 

 division was also pursued by Serville, in his Revue des Orthopteres, 

 in 1831, and in his general work on the Orthoptera, pubUshed in 

 1839. Lastly, in 1831, Latreille separated the Forficularia? from the 

 other Orthoptera, under the name of Dermaptera. 



Marcel de Serres, in 1809, divided them into five families: Labi- 

 doures (Forficularias), Blattes, Anomides (Mantides, including also 

 Mantispa), Nemides (Phasmida) and Grylloides. The latter were 

 again separated into five divisions: Taupegrillons (Gryllotalpa), 

 Grlllons (Gryllus, etc.), Dactylions (Xya), Locustaires (Locustarlse) 

 and Acrydiens (Acrydii). 



In 1811, Olivier, in the Encyclopedie methodique, first gave the 

 name of Orthoptera to the group, from which, however, he excluded 

 Forficula, as a coleopteron. He presented no special classification of 

 his own. 



Lamarck, both in 181 G and subsequently, divided the Orthoptera 

 into four families, — Locustaires (including Locustarias and Acridii), 

 Mantides (including Mantides and Phasmida), Gryllonides and 

 Coureurs (including Blattarise and Forficulai'iaj). 



MacLeay, in 1821, with his peculiar views of classification, allowed 

 five families, arranged in a circle; beginning, for instance, with the 

 Phasmida, the Blattaria were reached either directly, or through the 

 medium of the Acrydina, Locust ina and Gryllina, while the Dermap- 

 tera were conveniently termed an " osculant" groujD. 



Dumeril, in his Considerations generales sur la classe des Insectes, 



