Ipostelsia i^i 



low for the item of error due to the various con- 

 ceptions of species and genera. Only in so far 

 as they are general can figures in this connection 

 be relied on, and only in so far as they can be 

 co-ordinated with other explanations do they 

 explain. 



Summary and Conclusion. 

 In the light of the above generalization, the 

 main facts to l)e gained from the cited figures 

 can be summed up as follows: — 



a. That the pteridophytic flora is poor in 

 number of species for a region showing almost 

 tropical conditions as regards moisture, yet 

 shows great density and profusion. 



b. That the gymnospermous flora forms the 

 all important group and constitutes the great 

 mass of the island vegetation. 



c. That of the two classes of Angiosperms, 

 the Monocotyledons occupy a more important 

 position than the Dicotyledons. This relegation 

 of the Dicotyledons to a secondary place is not 

 without bearing upon other and interesting bio- 

 logical phenomena. For there can be little doubt 

 that the dearth of insects of almost all kinds 



