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 
Fic. 60.—-Night visitor to the jimson-weed (Sphinx Carolina). 
(From Harris’ /nsects Injurious to Vegetation.) J 
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- 
