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Uganda and British East Africa, with the immense develop- 

 ment of mimicry in Lepidoptera from the forest as compared 

 with the open country. It was, in fact, quite rare to find 

 any examples of mimicry at all among the species that 

 frequent the open. A few examples were known among the 

 woodhind species, while a large proportion both of individuals 

 and of species were mimetic in the forests. It occurred to 

 him that probably this difference was to be accounted for by 

 the difference between the insect-eating animals in these two 

 types of locality, lizards being probably the great vertebrate 

 insect-eaters of the open, birds of the forest. When, there- 



fore, he found that Dr. R. C. L. Perkins, in his correspond- 

 ence, suggested the same association between mimicry and 

 forest areas, he determined to write at once to Africa and 

 make special inquiry. 



Mi. C. A. Wiggins of Entebbe replied, on Dec. 18, 1911, 

 saying thai he did not remember ever seeing a lizard in the 

 true forest, but only in the glades, and that he had consulted 

 with the Governor, Mr. F. .1. Jackson, and found that their 

 experience agreed. Mr. Jackson had kindly written the 

 following letter on the subject: — 



"Government Housk, Uganda, 

 "Dec. 18, 1911. 



" Regarding lizards, I should say for every one you find in 

 a forest, you find ten out in the open. 



" Regarding insectivorous birds: the great majority, which 

 include Shrikes (Dryoacopus and Laniarius), Trogons {Ha/palo- 

 deivna), Cuckoo-shrikes {Campephaga and Grcmcalus), Fly- 

 catchers (various), Warblers (various), Robin-chats (Cossy)ihvs) 

 Bulbuls (Xeuocichht and A mhopadus), are found in open 

 forests, on the outer edge of thick forests, or forest glades. 

 Mos1 of the birds that are found in thick forest, i.e. well 

 inside, frequent the tall tree-tops rather than the under- 

 growth. The Bee-eater (.Verops albicoliis), very common 

 here, frequents tall trees in thick forests, rather than the 

 open like most of the family. 



" Exclusive of grain-eaters (Weavers, etc.), which feed 



