470 MR. B. FE. CUMMINGS ON 
Text-figure 7. 
Sericostoma personatum, 3. 
Transverse section along the line AB in text-fig. 6. Length of section 1:1 mm. 
8). Sacl. Sp). Sac 2. FL. The Flap. ZL. Lip. FH. Fluted hairs. GL.E. 
Glandular epithelium. C. Cuticle. H¥P. Hypodermis. SC. Scent 
hairs. CZ. Chitinous intima. J Muscle-fibres. 
