SXPLANATiON OB" FORM AND COLOURING. 275 



isokani, an Ypthima, and two Charaoces brutus. She now tasted and rejected 

 Y2othima and Phrissura isokani, and refused without tasting JSfeptis agatha and 

 Pinacopteryx pigea, but then suddenly shaking out her feathers and rousing 

 herself generally she not only crushed and ate the Pinacopteryx and the J^eptis 

 agatha but, only about three minutes latei', a Terias. 



I then gave several grasshoppers, after which she readily ate a NejJtis sadava, 

 several more grasshoppers, and after them yet another JSfeptis sadava. Then a few 

 more grasshoppers, but they brought her to the point of repletion, for she now 

 refused without tasting not only Gegenes, Byblia, and ]S[. sadava, but a Tagiades 

 Jiesits and a Pyrameis. She then crushed and swallowed Hamanumida dcedalus 

 after at first refusing it, crushed slightly and tossed carelessly away into the air 

 a c? Catopsilia florella and a Pyrameis cardtd, crushed and swallowed after at first 

 refusing it a yellow $ Catopsilia, then refused without tasting Salamis anacardii. 

 Precis cehrene, Pyrameis cardui, Tagiades Jlesus, Hamanumida dcedalus, and 

 cf Leuceronia argia. 

 [Summary : — 



1. P. isokani. 



2. M. agathina $ , M. rueppelli, M. yulei. 



It would be unsafe to deduce anything further from an experiment showing 

 such caprices of appetite.] 



Exp. 69. — In the late afternoon, having kept the bird without food for some 

 hours, I ofiered a Terias. She at first ignored it but finally just took it in the 

 point of her bill and tossed it away, afterwards refusing with violent head- 

 shakings, clapping of the bill, and other unmistakable signs of recognition 

 and dislike, to touch a jSfychitona medusa. A $ Mylothris rueppelli was, however, 

 very thoroughly crushed and swallowed, though a $ Mylothris agathina and a 

 $ Mylothris yulei were each at once rejected on being tasted. I now ofiered 

 a (S rueppelli. This was accepted, very thoroughly crushed, and finally half- 

 swallowed, but brought up again, again well crushed, and in the end dropped. On 

 my twice reofiering it, it was the first time well crushed and dropped and on the 

 second occasion just crushed slightly and rejected. Mylothris agathina and 

 Mylothris yulei were reofiered, but the bird refused to have anything to do 

 with them. There could be no doubt at all that the M. rueppelli was preferred to 

 either (all were quite freshly caught) and that a veiy large Terias which I now 

 offered was preferred to even M. ruepjyelli, for the bird just crushed it slightly and 

 swallowed it. Evidently she had not quite " woken up " when I first ofiered it. 

 Immediately afterwards she tasted and most emphatically rejected the Nychitona 

 and an Acrcea serena, shaking her head after each with marked disapproval. 

 I then reoffered the Mylothris rueppelli, which was once more well crushed and 

 rejected, the Mylothris agathina, which was recognized and refused with shakes of 

 the head, and the Mylothris yulei, which was tasted and at once emphatically 

 rejected. She now once more crushed and simply dropped the M. rueppelli, but 

 ate with the greatest readiness a JVeptis sadava. In order that the bird might 

 the more readily differentiate them, I had offered throughout the Mylothris 



