PLATE 7 
Larva of the honeybee 
A. —Dorsal diaphragm and heart, fourth, fifth, and sixth abdominal Segments, 
viewed from the inner surface. Diaphragm cells represented by heavy wavy lines* 
X 63. 
B. —Transverse section of heart (Ht), taken near the anterior end of the 
abdomen. X 315. 
