50 Mr. C. F. M. Swynnerlon on 



have on various other occasions seen when a bird, expecting 

 the nauseous model, has found that he has the mimic instead. 

 The Hoopoe edged back rapidly with the insect in her bill to 

 her original end of the perch, placed it firmly between her 

 foot and the branch, levered off the two fore wings and then, 

 after running the remainder quickly and eagerly from side 

 to side a number of times to thoroughly soften it, swallowed 

 it with evident appreciation. I. looked out for some time after- 

 wards for bad after-effects, as in the case of D. chrysippus 

 of two days ago (Jan. 15), but there were done. The bird 

 remained exceedingly cheery. 



The experiment was interesting for the light it threw on a 

 bird's mental processes. The suspicion of an invitation to 

 try an insect with an appearance associated in the enemy's 

 mind with unpleasantness, the temptation produced by the 

 prey's continued proximity, and perhaps by a realization 

 that it did not look quite the same as Danaida, the final 

 decision to try it, and the change thereafter from doubt to 

 joy were all most interesting. 



510. Jan. 18. — The bird accepted a Papilio angolarms, 

 seizing it by the thorax, at once transferred it to her foot, 

 and proceeded to pick off the wings and eat the butterfly. 

 The method was that of an Owl or Shrike. 



511. Jan. 20. — The bird had had a few larval locusts, but 

 was probably still fairly hungry. The following butterflies 

 were inserted, one at a time, alive. Two Fapilio lyams 

 (each seized, stripped partly of wings, and readily swallowed), 

 an Atella phalantha (unmolested for a time as it moved 

 about, finally seized and, after very thorough tasting, 

 swallowed, Eurytela hiarbas, two adult ant-lions {Formicaleo 

 leucospilus), and an Amauins lohengula. The Eurytela when 

 attacked at once dashed under the projecting edge of the 

 bird's food-dish and remained there motionless and out of 

 sioht. It was then that I offered the Atella, and when it 

 was eaten I reoffered the Eurytela, which, in spite of the 

 pulling out of the tray, continued to remain motionless in its 

 hiding-place. It was partly stripped of wings and readily 

 eaten. The ant-lions were eaten wings and all. The 



