OF THE ANNULOSA. 



367 



can this be effected than the reader, if he be an entomo- 

 logist, perceives that the animals, at these corresponding 

 points, have the same sort of metamorphosis, and more- 

 over that the transition from one form to the other in each 

 series is as gradual as can be expected from our present 

 imperfect knowledge of species. A beautiful regularity, 

 in brief, is visible, which combines those distinctions of 

 the parts of the mouth so much insisted on by Cuvier 

 and Lamarck, those relations of metamorphosis which 

 constitute the leading principle of Degeer, Olivier and 

 Latreille, and finally, those characters drawn from the 

 organs of locomotion upon which the orders were origi- 

 nally founded by Aristotle, Ray and Linnaeus. 



MANDIBULATA. HAUSTELLATA. 



Relations of Analogy. 



1. Hymenoptera Metamorphosis in- 1. Diptera Arist. 



Linn. completa vel coaro 



tata. Larva apoda. 

 Strepsiptera ? Kirby. Homaloptera Leach. 



2. ColeopTERA Arist. Metamorphosis in- 2. Aptera Lam. 



completa. 



Dermaptera Degeer, Metamorphosis se _ 3 . HemiptERA 

 3. Grthoptera Oto. mi , nmnleta . Linn . 



Dictyoptera Leach. 



micompleta. 



4. Neuroptera Metamorphosis sub- 4 Homoptera De- 

 Linn, semicompleta. geer. 



5.Trichoptera Metamorphosis ob- 5. Lepidoptera 



Kirby. tecta. Larva pedi- Linn: 



Tenthredina. bus membranaceis. 



Imaginis os mandi- 

 bulis abbreviatis in- 

 completis, labio et 

 maxillis ad basin 

 saltern coalitb. 



