852 



Mr. G. A. K. Marshall on 

 Table B. — {continued.) 



Results of Tables A and B. 



[The almost complete absence of the members of apo- 

 sematic Coleopterous groups is very marked. In fact, the 

 whole of the numerous beetles are probably cryptic, with 

 the following exceptions. The species of the Eumolpid 

 genus Syagrus is probably distasteful; for it freely exposes 

 itself on leaves, where its shining black appearance renders 

 it conspicuous. It is worthy of note that the only bird in 

 which it was found, Macronyx capcnsis, also ate Reduviid 

 bugs. The Phytophagous Macrocoma aurcovillosa belongs 

 to a probably distasteful group, but it is itself green in 

 colour ; it was only eaten by one species. The Hispid 

 Platypria is probably distasteful, and here too the only 

 species of bird which ate it, Irrisor erythrorrhynchus, also ate 

 the conspicuous Cassida {Aspidomorpha) punctata and 

 Pentatomid bugs. The above-named Cassid was also found 

 in two other species of bird. The most remarkable exception 

 is however the typically-coloured Cautharid, Mylahris 

 oculata, only detected in Ilero'ps natalcnsis. Here we 

 find the interesting proof that under certain circumstances, 

 and with certain enemies, the most marked distasteful 



