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VI 



INTRODUCTION. 





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American species, 19 are peculiar to the northern subprovince, and 12 to the southern, 

 not one passing the dividing line. The last genus that need serve for illustration is 

 Pasimachus, a Nearctic and Central- American form : of its 17 Central- American 

 species 15 are confined to the northern (of which 2 are North- American), and 2 to the 



southern subprovince, and none are common to the 



The division of the region 



into two subprovinces, as indicated by Mr. Salvin, is thus confirmed, as far as the species 

 are concerned, by our two families of Coleoptera ; and the analysis proves at the same 

 time that the northern subprovince is not a southern extension of the Nearctic province, 



r 



even on its highlands, but rather, seeing the large proportion of peculiar species it con- 



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tains, a remarkably distinct subprovince of the Neotropical fauna. 



H. W. B 



December 1884 





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