When the author was in England I asked him if he 

 would kindly give me his general impressions of the rela- 

 tive abundance of the chief members of this important 

 combination. At Rabai, A. natalica was the commonest, 

 and then the following species arranged in the order 

 of their abundance : — Fseudaonva trimenii, Acrma acara, 

 A. anemosa, A. areca. At Taveta, on the other hand, 

 where natalica swarms, the Pseudacrssa was the rarest, and 

 no definite impression remained of the relative numbers 

 of the others. In the neighbourhood of Taita, natalica 

 was the commonest species, and areca next, while the 

 Pseudacrxa was not seen. 



It is important to bear in mind these impressions, 

 founded on an experience going back to 1898, when study- 

 ing the table printed above. 



