1914} Digestion and Digestive Epithelium in Insects 321 
EXPLANATION OF PLATE XLI. 
(All are camera lucida drawings except Figs. 3, 4 and 5). 
Fig. 1. Epithelial cells of mid-intestine of Japyx. Longitudinal section. X 1160. 
Fig. 2. Epithelial cells of mid-intestine of Lepisma. Longitudinal section. 
X 1160 
Fig. 3. One lobe of mid-intestine of termite. Cross section. 
Fig. 4. Portion of mid-intestine of Lecanium. Cross section. 
Fig. 5. Epithelial cells of Myrmecophila. Cross section. X 760. 
Fig. 6. Epithelial cells of Carabid larva. Longitudinal section. X 760. 
Fig. 7. Portion of mid-intestine of silkworm, just molting. Longitudinal sec- 
tion. X 740. 
Fig. 8. Cross section through same on line A-B, Fig. 7. X 740. 
Figs. 9 and 10. Epithelial cells of silkworm. x 720. 
Fig. 11. Portion of mid-intestine of silkworm just after molting. Longitudinal 
section. X 720. 
ABBREVIATIONS. 
ab., absorptive cells. n., nidi. 
b. m., basement membrane. nuc., nuclei. 
c. m., circular muscles. Tr. c., regenerating cells. 
con., concretions. s. c., secreting cells. 
d. c., degenerating cells. sec., secretion. 
int., intima. vac., vacuoles. 
1. m., longitudinal muscles. y.c., young cells. 
