FIG. i. Showyig the influence of heat and cold on the pupae of some butter- 

 flies. Vanessa antiopa: Fig. i, effect of heat; of cold, Figs. 2 and 3. Vanessa 

 cardui: Fig. 5, effect of heat; Fig. 6, effect of cold. Vanessa atalanta : Fig. 7, 

 effect of heat; Fig. 8, effect of cold. Fig. 4, Vanessa pollychloros, aberratio 

 dixeyi, effect of cold. (After Standfuss.) 



