EXPLANATION OF FORM AND COLOURING. 359 



Exp. 193. — March 3. Had fed not long before. Refused to touch meat or a 

 Terias brigitta, then tasted slightly and I'efused the latter. Tasted and rejected an 

 A. phcdantha, and refused to touch it again, refused persistently to taste a 

 Lachnoptera ayresi, offered similarly with upper surface displayed, and refused both 

 butterflies offered to show the under surface only, again refused the Terias, accepted 

 and crushed a Mycalesis camjyina, but then threw it away, readily ate a P. angolanus, 

 tasted and rejected a second Atella phalantJia, without wings, accepted hesitatingly, 

 but, having tasted it, readily enough ate a Lachnoptera ayresi, also wingless, and 

 again tried and rejected the wingless Atella. She next crushed and flung away a 

 Cyclopides metis and I'efused thereafter to touch eitlier it, a Padraona zeno, or a 

 Kedestes chaca, all offered with the upper surface displayed. On my reoffering 

 them with only the under surface shown, she refused the G. metis, tasted rather 

 hesitatingly and ate the K. chaca, tasted, though with hesitation, the Cyclopides 

 and once moi-e flung it away, accepted, crushed and readily ate the P. zeno, ate a 

 Leuceronia thalassina J , hesitated over an E. hiarbas but decided not to take it, 

 accepted, pressed with her bill, and threw away a Dielis 5-fasciata (the rejection 

 was due, I thought, at least partly to its hardness), refused to touch again either it 

 or two other wasps. Tasted and rejected a j^ellow-legged wasp (S'alius sp.) and 

 readily ate a small grasshopper. 



[Summary : — 

 (a) 1. L. ayresi, P. angolanus. (b) 1. K. chaca and P. zeno; perhaps 



2. A. phalantha, T. brigitta, If. L. thalassina c? . 



camjnna, meat. 2. E. hiarbas and C metis. 



(c) 1 . Small grasshopper. 



2. Dielis 5-fasciata and Salius, the other two wasps being quite likely refused 

 through likeness to the Dielis. 



A. good mimicry experiment, three homceochromatic groups being successfully 

 tested.] 



Exp. 193. — In the late afternoon, hungry, she refused, then tasted slightly, and 

 again refused an A. areca $ , and after it refused a large $ black and chestnut 

 A. esebria, which, had it been spotted, would have been by no means unlike the 

 A. areca ; both had their upper surface fully displayed. On my now showing the 

 under surface the A. areca was again refused, but the A. esebria tasted before 

 rejection. 



A little later I offered the A. esebria with upper surface displayed. It was this 

 time tasted and rejected, and thereafter both it and an A. cabira (much like it, 

 except for size) were persistently refused without tasting. A Terias senegalensis 

 was eaten. 



After a few grasshoppers the roller tasted and rejected, then refused, a Terias 

 regularis and persistently refused a Teracolus auxo, a Terias senegalensis, and a 

 T. brigitta, but ate a Mycalesis campina. 



[Another experiment, illustrating well how a bird may be deceived or rendered 

 suspicious by a likeness, while ready to test any new pattein, It is probable that 



