PLATE 4 
Larva of the honeybee 
A. —Alimentary canal, silk glands ( SlkOl ), and Malpighian tubules (Mai) of 
mature larva, drawn from a dissection. X 10. 
B. —Surface view of a short section of a Malpighian tubule. X 75. 
C. —Cross section of pharynx, just caudad of frontal ganglion. X 152. 
D. —Cross section of Malpighian tubule. X 300. 
