102 



DISTRIBUTION OF ANIMALS. 



[PART I. 



Sub-class. 



Order. 



II 



( Teleostei 



Dipnoi 



Ganoidei 



Chondropte- 



rygii 

 Cyclostomata 

 Leptocardii 



II 

 U 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 1 3. 



Acanthopterygii 

 Do. Pharyncognathi 

 Acanthini 

 Physostomi . . . 

 Lophobranchii 

 Plectognathi 

 Sirenoidei . . 

 Holostei 

 Chondrostei. 

 Holocephala ... 

 Plagiostomata 

 Marsipobranchii 

 Cirrhostomi . . . 



Remarks. 



Gasterosteidse to Notacanthi. 



Pomacentridai to Chromidae. 



Gadopsidae to Pleuronectidae. 



Siluridae to Pegasidae. 



Solenostomidae and Syngnathidae. 



Scleroderaii and Gymnodontes. 



Sirenoidei. 



Amiidse to Lepidosteidae. 



Accipenseridae and Polydontidae. 



Chimaeridae. 



Carchariidae to Myliobatidae. 



Petromyzontidae and Myxinidae. 



Cirrhostomi. 



Total ... 116 families 



INSECTS. 



The families and genera of insects are so immensely numerous, 

 probably exceeding fifty-fold those of all other land animals, 

 that for this cause alone it would be impossible to enter fully 

 into their distribution. It is also quite unnecessary, because 

 many of the groups are so liable to be transported by accidental 

 causes, that they afford no useful information for our subject ; 

 while others are so obscure and uninteresting that they have 

 been very partially collected and studied, and are for this 

 reason equally ineligible. I have therefore selected a few of 

 the largest and most conspicuous families, which have been so 

 assiduously collected in every part of the globe, and so carefully 

 studied at home, as to afford valuable materials for com- 

 parison with the vertebrate groups, when we have made due 

 allowance for the dependence of many insects on peculiar forms 

 of vegetation, and the facility with which many of them are 

 transported either in the egg, larva, or perfect state, by winds, 

 currents, and other less known means. 



I confine myself then, almost exclusively, to the sixteen 

 families of Diurnal Lepidoptera or butterflies, and to six of the 

 most extensive, conspicuous, and popular families of Coleoptera. 



