'504 Wisconsin Academy of Sciences, Arts, and Letters. 
EXPLANATION OF PLATE XXXIV. 
All figures except general dissections drawn with a camera. Magni¬ 
fication in diameters given after explanation of each figure. 
Fig. 1. Dorsal view of alimentary tract and salivary glands; oes., 
oesophagus; SI. G., salivary gland; the smaller one seen at 
its anterior end. G. F., so-called receptacle of salivary gland. 
ML I., mid-intestine. Mlp., Malpighian tubes. II., ileum; P., 
rectum. X 3. 
Fig. 2. Alimentary tract without the oesophagus, showing relative 
length of different parts. Lettering as above. X 3. 
Fig. 3. Longitudinal section through posterior end of oesophagus with 
a very small part of the mid-intestine the epithelial cells 
of which have not been drawn, ch., chitinous layer. C. M., 
Circular muscles. L. M., longitudinal muscles. X 220. 
Fig. 4. Three cells of the oesophagus, the muscular and chitinous 
layers omitted ext., external surface. X 1000. 
Fig. 5. Longitudinal section through part of mid-intestine, larger an¬ 
terior part, to show folding of epithelial layer. L. M., longi¬ 
tudinal muscles. C. M., circular muscles, ext,, external sur¬ 
face. X 220. 
Fig. 6. Three cells of the ileum, ext., external surface. X 315. 
Fig. 7. Showing the anterior ends of a salivary gland with the two 
terminal acini of L. G., the larger, and S. G., the smaller 
gland. The duct from the larger gland is seen to receive 
that from the smaller one and then to divide again. X 02. 
Fig. 8. A longitudinal section of the duct of the salivary gland. The 
part cut is between the two lines marked a in fig. 7. The 
chitinous layer having the serrated appearance is internal. 
X 1000. 
Fig. 9. Section of a single acinus of the salivary gland. X 150. 
Fig. 10. Part of the so-called receptacle of the salivary gland; above 
the terminal portion (sectional view); at D, the distal por¬ 
tion. M., the enlarged median portion, showing the strands, 
Str. P., part of the proximal portion. X 26. 
