218 Field, Forest, and Wayside Flowers 



purple. The buds of both species expand late in 

 the afternoon from four to six o'clock, according 

 to the weather. Both are immigrants from warmer 

 lands, but it is evident that they have made friends 

 among the native night-flying insects, for the 

 thorny seed-vessels follow duly upon the fading of 

 the flowers. 



The night visitor of the jimson-weed is the 



FIG. 60. Night visitor to the jimson-weed (Sphinx Carolina). 

 (From Harris' Insects Injurious to Vegetation.) 



Sphinx Carolina (Fig. 60), a large moth whose cater- 

 pillar has a great and evil reputation throughout 

 the South, where it is known as the "tobacco- 

 worm." In our gardens these caterpillars live 

 on the tomato-vines. They are large, but it 

 is difficult to see them, notwithstanding, as their 

 bodies are of exactly the same tint as the vine- 



