268 



THE AMERICAN NATURALIST [Vol. LI 



other predaceous insects which often pounced upon but- 

 terflies of other families. But Poulton^'' finds, to state it 

 mildly, that ^ 'there is good reason for believing that such 

 attacks are not rarely made, and that predaceous insects 

 are important enemies of aposematie butterflies." He 

 also writes^' of the Batesian hypothesis : 



This was not, as has been generally supposed, originated by Bates 



tion and (n retleet upon his experiences. 



Under these circumstances the uncorroborated testimony 

 of this witness concerning matters which are not known 

 to have been carefully investigated in the Brazilian wil- 

 derness and are not determinable from the studv of 

 preserved material is of httle immediate consequence. 

 Amons: subiects regarding which his opinion can at pres- 

 ent he held oiilv in slio-lit (.stocm. niid coiiccnimo- wlncli 

 he (xpie^sed himself 111 tli i iinninii it ii rh m In 



ous^ness of briu'htl'olors iii.-iv !,(> iusllv inclii.hMl. 



The positive ;iss(M'nnns iii the tollowm-' (flotation 

 describing conditions oh^crxcd nii nitonioh^u-ist in 

 British Guiana aiv also instnictivc : tlic same is true of 

 their author s naivo conclusion. 



^\ . J. Kave-^ writes: 



