( lxxvi ) 

 1910. 



Nov. 12. Saw a drongo try to capture a H. misippus $, 

 which was going to rest on a branch of an 

 orange tree late in the afternoon. The bird 

 missed the insect, and it flew away. 



Dec. 4. Again saw drongo try to capture H. misippus $ 

 under identical circumstances. I heard the 

 beak of the bird distinctly snap twice, but 

 without success. After this both bird and 

 insect got behind the tree, and I could not see 

 what happened. 



1911. 

 May 28. Saw drongo make an attempt at two Papilio 

 nireus which were fluttering together. 

 ,, 30. Saw drongo make a similar attempt at three 

 Papilio demodocus under similar circumstances. 

 Both attempts were futile, and in both cases 

 the click of the bird's beak was distinctly 

 heard. 



Prof. Poulton said it was interesting to compare Mr. Rogers' 

 results with those obtained by Dr. G. A. K. Marshall in 

 1897. The Natal spiders in these experiments were ap- 

 parently more susceptible to the distasteful qualities of 

 Acraeas, while, in the rejection of Danaine butterflies, the 

 two sets of experiments gave very concordant results. The 

 one Acraeine, A. acara, refused by the Rabai spiders was 

 peculiarly unpleasant to the human sense of smell; Mr. 

 W. A. Lamborn in fact considered that its western race zetes 

 had a more offensive odour than any other Acraea known to 

 him in the Lagos district. 



Mr. E. E. Green remarked that when he kept specimens 

 of Mygale (the " bird-eating spider ") they used to take 

 Euploeas freely. 



Mr. Bacot said that a Mantis to which he gave a specimen 

 of Danaida chrysippas ate the head, but rejected the body. 



Observations by Dr. R. Hanitsch on the proportions 



OF THE FEMALE FORMS OF PAPILIO POLYTES, L., ON SINGAPORE 



Island. — Prof. Poulton exhibited all the females and a 

 selection of the males of the series of P. polytes f. romulus, Cr., 



