U. S. Dept. of Agriculture, Manual of Dangerous Insects. 



Plate XVII. 



The Cotton Spittle-Tube Insect. 



The cotton spittle-tube insect ( Machxrota planitise) : Fig. o.— Eggs on cotton stem; 6, egg imbedded in 

 tissue of stem; c, egg; d, nymph, 19 days old; e, calcareous case of nymph, 20 days old;/, case with, 

 molted skin attached; ^ ,male ft, female; i, side view of adult. (Maxwell-Lefroy.) 



