1887.] VALUE OF COLOUR AND MARKINGS IN INSECTS. 271 



June 11. — I. Four imagos of P. hucephala were introduced, one 

 was seized direct]}' but relinquished ; ultimately all four were eaten. 

 Four larvfe of Abraxas grossulariata were untouched. 



III. Two imagos of Cerura vinula and four of P. bucephala were 

 all taken ultimately. These Lizards {L. viridis) were very shy, and 

 hardly ever seized an insect before an observer; being quite unlike 

 L. inuralis iu this respect. 



Two larvaj of A. grossulariata disappeared, but they may have 

 escaped, being small larvae. 



IV. Five larvae of A. grossulariata introduced ; I saw one severely 

 bitten, in fact chewed for some time, but it was ultimately relin- 

 quished. One larva of C neustria was also added, and with the A. 

 rrossulariata could not be seen on the next day. It is possible that 

 they may have escaped, and I do not attach importance to their 

 absence, unless escape was impossible. One imago of P. bucephala 

 was ultimately eaten. 



V. Two imagos of Amphydasis betularia, one of Mamestra persi- 

 carice, one of M, hrassica, and one pupa of Plusia gamma were 

 introduced and all eaten (I witnessed the capture of one betularia 

 and the persicarice) . Four larvae of A. grossulariata were un- 

 touched. 



VI. Two imagos of P. bucephala were eaten ultimately. 



June 13. — V. One imago of Acronycta psi was ultimately eaten. 



June 15. — I. Three imagos of P. bucephala were all eaten by the 

 next day. 



III. Six imagos of P. bucephala were introduced, and five were 

 eaten by the next day. 



V. One imago of A. curdamines ( 2 ) was eaten by the next day. 



VI. Four imagos of P. bucephala were introduced and three were 

 eaten by the next day. 



In these cases the insects may have been eaten at any time between 

 their introduction and the next day, when the next observation was 

 taken. 



June 17. — I. One imago of Sphinx ligustri was introduced and 

 untouched. 



V. One imago of Hadena oleracea and one of A. psi were eaten 

 by the next day. 



June 18. — I. The S. ligustri introduced yesterday was resting on 

 the upper part of the cage out of reach of the Lizards ; it was again 

 placed on the floor of the case, but remained untouched. 



June 19. — III. The S. Hgustrivias still untouched in I. cage, and 

 it was therefore removed and placed in III. When the next obser- 

 vation was made, a few hours later, it was entirely eaten except a 

 piece of one wing. 



I. Two full-fed larvae of Taniocampa gothica, found feeding upon 

 Aconitum napellus, were introduced to see if they were affected as 

 food by the exceedingly poisonous properties and strong taste of the 

 plant upon which they had been feeding. It seemed possible that 

 tlie undigested food in the larval digestive tract might be harmful to 

 the Lizards, even if the insects made no further use of the properties 



19* 



