m 



Mr, Mackay oh certain general LnwSf i^d, [Nov. 



PTILOTA 



>N 



^ _^ ^ 



either become by metamorpho- or become by metamorphosis 



sis organized for mastication organized for suction in their 



in their perfect state, and are perfect state, and are the 

 the 



Mandibulata ot Clairville, HausTellata of Clairville, 



which comprise the following which comprise the following 



orders, viz. orders, viz. 



I. 



Metamorphosis obtect. 

 Larvae eruciform. 



Trichoptera? 



2. 2. 



Metamorphosis incomplete, or Metamorphosis incomplete, or 



1. 



Metamorphosis obtect. 

 Larvae eruciform. 



Lepidoptera. 



coarctate. 

 Larvse apod or vermiform. 

 Hymenoptera. 



3. 



Metamorphosis incomplete. 

 Larvae of various types. 



COLEOPTERA. 



coarctate. 

 Larvae apod or vermiform. 



BlPTERA. 



o. 



Metamorphosis incomplete. 



Larvae 



Aptera. 



The only larva of this order known is apod 

 or vermiform, but of the coleopterous 

 atrueture. 



4. 4. 



Metamorphosis semicomplete. Metannorphosis semicomplete. 



Larvae resembling the perfect Larvae resembUng the perfect 



Insects. Insects. 



Orthoptera. Hemiptera. 



5. 



Metamorphosis various. 

 Larvae hexapod. 



Neuroptera. 



Metamorphosis various. 

 Larvae hexapod. 



HoMOPTfiRA. 



N. B. A mark of doubt is annexed to the word Trichoptcay 

 because entomologists have not yet determined whether the 

 Linncean genus Plirygnnea forms part of an annectent order, or 

 whether it forms a distinct osculant order. 



