SCALE-INSECTS, BARK-LICE, MEALY-BUGS. 243 
“a 
Fig. 197.—Lady-bugs. To thejleft the Twice-stabbed lady bug and its lava; a, 
larva, b, pupa; c, adult of another species. After Div. of Entomology, Dep. of 
Agriculture. 
Fic. 198—Chrvsopa species. Fig. 199.—Lice-eating flies and their 
After Brehm. early stages. After Brehm. 
