tHE CANADIAN ENTOMOLOGIST. 



395 



Table F. 

 Summation of Genera, All Types. 



These; la'.uLuions sliow ihat for endemic genera of all three types, 

 regions 3, 4, 6 and 7 average 18.4 per cent., while the other ten regions 

 average 1.3 per cent. For all genera of these three types, the four regions 

 average 23.4 per cent., while the other ten regions average 4.1 per cent. 

 A comparison with the distribution of all genera of fiowering plants shows 

 that the per cent, of endemic apically dehiscent genera in the four regions 

 is 7.6 higher than that for all genera of plants, while for the other ten 

 regions it is 1.3 lower. For all genera occurring, the per cent, of apically 

 dehiscent genera is 1.7 higher for the four regions and 5.7 lower for the 

 ten others. It will be seen that these figures become even more suggestive 

 when the Indian region is not considered with tropical and extra-tropical 

 South American and Australian regions. A comparison of the percents of 

 this table with those for all genera of plants is facilitated by subtracting 



