262 On the IS aland Dislribution of' Insccis and Fungi. 



Animals. " Scd centrum ahit semper in diias series" 

 and consequently we find that the 



PTILOTA 



either become by metamor- 

 phosis organized for masti- 

 cation in their perfect state, 

 and are the 



Mandibulata of Clairvillc, 

 which comprise the following 

 orders, viz. 



1. 

 Metamorphosis obtect. 

 Larvae cruciform. 



TniCHOPTERA? 



or become by metamorphosis 

 organized for suction in 

 their perfect state, and are 

 the 



Haustei.lata of Clairville, 

 which comprise the following 

 orders, viz. 



1. 

 Metamorphosis obtect. 

 Larva? eruciform. 

 Lepidopteka. 



Metamorphosis incomplete, or Metamorphosis incomplete, or 



coarctate. coarctate. 



Larvae apod or vermiform. Larvae apod or vermiform. 

 Hymenoptera. Dipteha. 



Metamorphosis incomplete. 

 Larvae of various types. 



COLEOPTEKA. 



4.. 

 Metamorphosis semicomplete. 

 Larvae resembling the perfect 

 Insects. 



Orthoptera. 



Metamorphosis incomplete. 

 Larvae 



Aptera. 



The only larva of this oiilcr known 

 is apod or vermiform, but of the 

 coleopterous structure. 



4. 

 Metamorphosis semicomplete. 

 Larva3 resembling the perfect 

 Insects. 

 Hemiptera. 



Metamorphosis various. 

 Larvae hexapod. 



Neuroptera. 



Metamorphosis various. 

 Larvae hexapotl. 



HOMOPTERA. 



N.B. A mark of doubt is annexed to the word Trickop/era, 

 because entomologists have not yet determined whether the 

 Linnaean genus Phryganea forms part of an annectent order, 

 or whether it forms a distinct osculant order. 



LIII. Ex- 



