422 THE MOUNTAIN. 



"I divide this class into twelve orders, the three first of which 

 are composed of Apterous Insects, undergoing no essential change 

 of form or habits, merely subject to simple changes of tegument, or 

 to a kind of a metamorphosis, which increases the number of legs, 

 and that of the annuli of the body. The organ of sight in these 

 animals is usually a mere (more or less considerable) assemblage of 

 ocelli resembling granules. 



"Certain English naturalists have formed new orders, based upon 

 the wings ; I see no necessity, however, for admitting them, that of 

 the Strepsipter excepted, the name of which appears to me to be 

 erroneous,* and which I call Rhipiptera.f 



"In the first order, or the MYRIAPODA, there are more than six 

 feet twenty-four and upwards arranged along the whole length pf 

 the body, on a suite of annuli, each of which bears one or two pairs, 

 and of which the first, and in several, even the second, seem to form 

 a part of the mouth. They are Apterous. J 



"In the second, or the THYSANOURA, there are six legs, and the 

 abdomen is furnished on its sides with movable parts, in the form of 

 false feet, or terminated by appendages fitted for leaping. 



" In the third, or the PARASITA, we find six legs, no wings, and no 

 other organs of sight than ocelli ; the mouth, in a great measure, is 

 internal, and consists of a snout containing a retractile sucker, or in 

 a slit between two lips, with two hooked mandibles. 



" In the fourth, or the SUCTORIA, there are six legs, but no wings ; 

 the mouth is composed of a sucker inclosed in a cylindrical sheath, 

 formed of two articulated portions. 



"In the fifth, or the COLEOPTERA, there are six legs and four 

 wings, the two superior of which have the form of cases, and mandi- 

 bles and maxillae for mastication : the inferior wings are simply 

 folded crosswise, and the cases, always horizontal, are crustaceous. 

 They experience a complete metamorphosis. 



"In the sixth, or the ORTHOPTERA, there are six legs, four wings, 

 the two superior in the form of cases, and mandibles and jaws for 

 mastication, covered at the extremity by a galea; the inferior wings 

 are folded in two directions, or simply in their length, and the inner 

 margins of the cases, usually coriaceous, are crossed. They only 

 experience a semi- metamorphosis. 



"In the seventh, or the HEMIPTERA, there are six legs, four wings, 

 the two superior in the form of crustaceous cases, with membranous 

 extremities, or similar to the inferior, but larger and firmer; the 



* Twisted wings. The parts taken for elztra are not so. See this order. 



t Wings folded like a fan. 



J Destitute of wings and scutellum. 



