16 ON THE TRANSFORMATION OF INSECTS. 



Amorpha, in which the penultimate state is provided neither with 

 mouth nor organs of locomotion ; consequently it neither eats nor 

 moves, neither does it bear any resemblance to the perfect state. 

 This group contains : — 



Class I. — Lepidoptera. 



II. DiPTERA. 



Necromorpha, in which the penultimate state is provided with 

 mouth and organs of locomotion, detached from the body, but so 

 enveloped in a case that it can employ neither. The resemblance, 

 therefore, to the perfect insect is very considerable, excepting in 

 the total want of motion. This group contains : — 



Class III. — Hymenoptera. 

 IV. — Coleoptera. 



IsoMORPHA, in which all the stages are active and voracious, and of 

 similar form. This group contains : — 



Class V. — Orthoptera. 

 VI. — Hemiptera. 



Anisomorpha, in which appears the Amorphous, Necromorphous, 

 and Isomorphous characters, together with a typical and distinct 

 character. This group is equivalent to : — 



Class VII. — Neuroptera. 



The Amorphous insects are divisible into two distinct groups ; 

 one of which is by far more decidedly and essentially amorphous 

 than the other; and, strange as the assertion may appear, the 

 possession of this character in the extreme is nothing more 

 than an approach to the Necromorphous group, which does not 

 in any degree possess the character. The two groups of 

 Amorphous insects are not limited to the classes Lepidoptera 

 and Diptera, but are separated by the fact of their possessing, 

 in the penultimate or quiescent state, the last skin of the 

 ante-penultimate, or previous state ; thus, 



1. Amorpha Adermata, which do not retain the skin of the 

 previous state on entering the quiescent state ; which possess a 

 slight power of motion, but not of locomotion ; which exhibit the 

 site of the wings, legs, antennae, eyes, &c. Papilio, Lin. ; Sphinx, 

 Lin. ; Phalcsna, Lin ; Tipula, Tababus, Asilus, Bombilius, &c., 

 are the leading groups of Amorpha Adermata. Culex has a 



