CATALOGUE OF INSECTS. 465 



CONCLUSION. 



In the foregoing pages 6,098 species are listed, to which future 

 studies will undoubtedly add at least 20 per cent, more ; they are dis- 

 tributed as follows : 



Families. Genera. Species. 



Hymenoptera 30 302 1,074 



Coleoptera 71 815 2,227 



Lepidoptera 28 484 1,140 



Diptera.... 57 319 811 



Orthoptera 7 52 117 



Hemiptera 



Heteroptera 26 173 313 



Homoptera . 10 101 242 



Neuroptera 9 61 174 



Total 238 2,307 6,098 



Authors are not agreed as to the best way of making up catalogues. 

 Some begin with the higher families, running down to the most 

 degraded ; others reverse this proceeding and begin with the least 

 specialized forms, ending with the highest types. Of the lists fol- 

 lowed in this catalogue, the Hymenoptera, Orthoptera and Neuroptera 

 run the series from the lowest to the highest. In the Coleoptera, 

 Lepidoptera, Diptera and Hemiptera the highest forms are placed at 

 the head. 



In adopting the Linnsean orders, rather than the more numerous 

 divisions of Brauer or Packard, I have followed convenience and not 

 conviction, believing that a catalogue of a restricted fauna is not the 

 place to bring forward a classification not generally accepted. In a 

 future edition of the catalogue I should expect to make the change. 



2E 



