270 MR. E. B. POULTON ON THE PROTECTIVE [Mar. 1, 



by two Lizards even when motionless ; it was seized and eaten with 

 great avidity (L. muralis). 



One Noctua pupa (found when digging in the garden ; almost 

 certainly that of Mamestra brassicis) was instantly seized, slightly 

 crushed, and swallowed with great avidity (L. muralis). It was 

 interesting to note the great difference between the treatment of this 

 pupa and that of P. bucephala. 



May 21. — One imago of Anthocaris cardamines (5) was seized 

 and eaten immediately (i. muralis). 



May 30. — Two imagos of C. prasinana were eaten directly with 

 avidity. A few larvae of Odonestis potatoria were placed in the cage 

 of L. muralis a day or two before, and after long delay had 

 disappeared by this date. Two were offered to the same Lizards on 

 this day, and one was taken at once, the other being untouched for 

 a long time. It is quite evident that the species is disliked, but that 

 the Lizards will eat it if they are hungry. 



Several pupae of P. bucephala were introduced ; from one of them 

 an imago emerged almost immediately, and was at once seized and 

 then relinquished by two or three individuals of L. muralis, but it 

 was finally eaten, although evidently unpalatable. The pupae were 

 not touched on this day. 



One imago of P. rapa was eaten at once. 



One imago of P. hrassicce was eaten, but not at once, by L. muralis. 



June 2. — One imago of P. rapcB was eaten at once by L. muralis. 



June 4.— One pupa of Tryplieena pronuba was eaten directly by 

 L. muralis. 



One imago of Euplexia lucipara was eaten directly by L. muralis. 



Two imagos of Hepialus lupulinus were eaten directly by L. muralis. 



One imago of P. bucephala was seized at once but soon rehn- 

 quished by L. muralis. 



June 6. — The P. bucephala imago introduced on June 4th had 

 now disappeared ; another was offered on this day and was at once 

 seized and eaten by L. muralis. 



The larvae of O. potatoria had now disappeared. 



Three imagos of P. rapce were eaten at once by L. muralis. 



One imago of P. brassicce was eaten immediately by L. muralis. 



After this last date the various species of Lizards to which insects 

 were offered were always accurately noted, and were indicated by 

 the numbers I., III., IV., V., and VI. placed upon their respective 

 cages, and which contained the following species : — 



I. Lacerta muralis (var. tiliguerta), about a dozen fine speci- 

 mens. 

 III. One 2 Lacerta viridis and two c? of the same species : all 



fine individuals. 

 IV. L. muralis, var. tiliguerta : about half a dozen full-grown 



specimens. 

 V. A few small individuals of L. muralis (more than one variety). 

 VI. One 2 L. viridis, a very fine specimen, and one full-grown 

 Gecko {Tarentola mauritanica). 



