Folsom. — Mouth-Parts, Orchesella cincta. 



PLATE 4. 



Figs. 28-32. Sections nearly transverse to the mouth-parts, numbered in sequence, 

 beginning near the mouth, and cut approximately in directions 

 indicated by the numbered lines of Plate 1, Fig 3. Figs. 28-31, 

 X 220; Fig. 32, X 116. 



Fig. 33. Transverse section through a secretory region of one of the larger 

 cephalic glands. X HO. 



Fig. 34. Transverse section of an evacuating duct of the same gland. X 440. 



Fig. 35. Sagittal section of one of the pair of smaller cephalic glands. X 220. 



