ANALOGIES OF THE ANNULOSA. 



9 



Crustacea. This latter affinity brings us at once into 

 the great class of Aptera, which we quit by means of 

 the dipterous order^ the only one of its divisions where 

 the perfect insect is provided with wings : this order, in 

 fact, connects the Aptera with the typical class of Pti- 

 lotu, the first division of which is the Hymenoptera. 

 We have now arrived among four-winged insects, and, 

 after following the chain of connection from the Hymeno- 

 ptera to the Hemiptera and the Lepidoptera, pass, by 

 the latter, to the Neuroptera. The circle of the Ptilota 

 is closed by the Coleoptera, and thus the Neuroptera, by 

 standing at the furthest extremity, comes nearest to the 

 Annelides, or that point from whence we began. With- 

 out attempting, for the present, to combat the many 

 objections which a first view of this theory, so different 

 from all received arrangements, might easily suggest, we 

 must crave the patience of our entomological readers 

 for a short time, until, by seeing the result in all its 

 bearings and ramifications, the whole theory becomes 

 understood. 



(9-) Assembling these primary groups of the Annu- 

 losa in a tabular form, we shall at once perceive that 

 they turn out to be representatives of the five great 

 divisions of the vertebrate circle. 



Analogies of the Annulosa to the Vertebrata. 



Classes of the 

 Annulosa. 



Aptera. 



Ptilota. 

 annelide3. 



Vermes. 



Analogies. 



r Destitute of wings and crawling;") 

 I feet highly developed, and walk.j 



Furnished with wings, and fly. 



Body excessively lengthened. 



'The most imperfectly organised 

 their respective circles ; des' 

 '. of teeth. 



rXhe mo) 

 i ofthei 

 C titute ( 



-1 



Classes of the 

 Vertebrata. 



Quadrupeds. 



Birds. 

 Reptiles. 



Amphibians. 



CiRRHiPEDBs. [ ^tl\lT'''^ ^'^^ ^^'^ ^'^*^' °'] Fishes. 



Among all the different arrangements that have yet ap- 

 peared of the annulose animals, there is not one which 



