278 MR. C. F. M. SWYNNERTON ON THIS 



saclava, tasted and rejected Phi-issura isokani, refused an Y2Jthima and the Byhlia 

 persistently without tasting, then tasted the Ypthiina reofiered, and rejected it, 

 refused for a second or two only (thinking of saclava ?) but changing her 

 mind accepted and ate lieptis agatha, then tasted and rejected the Byhlia 

 (a dark individual) and a Phrissura isokani, and refused obstinately to touch 

 an Ypthima. I now offered a large brightly- coloured strongly-smelling locust, 

 Phymateus viridipes. The bird at once seized on it, but after running it through 

 her bill and tasting it well all over without however actually crushing it, dropped 

 it, but without special sign of dislike. She refused it v\ ithout tasting on its being 

 reoifered. 



Exp. 61. — In the late afternoon I offered the bird Mylothris ruepiMlli S . This, after 

 at first refusing, she tasted and at once rejected, then refused for some time but 

 finally accepted, crushed, and swallowed without further hesitation a Terias brigitta, 

 after this once more tasting slightly and rejecting the Mylothris 7'uepp)elli. 



I now gave her the Phymateus viridipes, which she accepted, crushed and battered 

 very thoroughly indeed against the perch, taking some time over it, so that her 

 mouth must have been full of its taste, and finally ate it without he^iitation or any 

 sign of dislike. She then obstinately refused to touch Terias brigitta or a Phrisstcra 

 isokani, crushed thoroughly and threw away aia Ypthima, refused without tasting 

 a Byhlia, readily accepted a Neptis saclava, crushed and swallowed it, and after it 

 an Ypthima, once more refusing to have anything to do with the Terias or with 

 Phrissura isokani c? or § . 



I now gave her a large grasshopper and a small one. She then crushed and 

 dropped but on my reofiering each crushed once more well and swallowed a Papilio 

 lyceviS and a Leuceronia thalassina. I could see no difference in her treatment of 

 the two species. 



She then readily ate a Charaxes hrutus, afterwards crushing and rejecting a 

 Papilio lyceus, and refusing for some time but in the end, on my removing the wing, 

 similarly crushing and rejecting Leuceronia argia 5 . 



[Summary, ETC. : — (1) Note at the tinbe: " There seemed to be nothing much to 

 choose in point of acceptability between Papilio lyceus and the L. thalassina. The 

 roller yesterday showed rather more suspicion of Leaceronia drgia laitil I I'emoved 

 the wing. Perhaps the latter reminded it too much of that of Mylothris agathina. 



Phymateus viridipes, on the strength of having found which genus in their 

 stomachs both Marshall and I based an idea of the indiscriminate tastes of rollei's 

 in general, is here shown to be lowei', probably, than iVeptis saclava and agatha, but 

 probably i-ather higher than Terias hrigitta — though its more deliberate crushing 

 may have been merely because less well known of late than the Terias." 



(2) Grades : — 



1. Charaxes hrutus, on manner above 



2. L. thalassina and P. lyoius, X. agatha and iV. saclava. 



3. Ypthima. \ . 7, ,,. t ,, • 7 

 ,, 1 . \ , rn • 7 • • y Pliymateiis viridipes, Bi/biia,au\\(X 1 .isokani. 



M. yidei. ^ 4. Terias hrigitta. J i > ^ > 



5. Mylothris rueppelli.] 



