14 
CHARLES BADHAM. 
eosin. This secretion is coarse and consists of particles of 
2 fi in diameter. These cells, which are a good deal smaller 
than those of the first type, have a diameter of about 60 /u, and 
are placed in between the larger cells beneath the body wall 
musculature, as well as internal to the larger cells, and a few 
are found outside the salivary glands with their ducts passing 
Text-fig, 5. 
Transverse section through the preclitellar region of a specimen 
of Austrobdella translucens 7 mm. long (X 186). The 
drawing shows the character of two of the unicellular salivary 
glands and their relatively large size. The position and 
character of the nucleus which is next to the secretion space 
is also shown. S. gl. Unicellular salivary gland. Cy. Cytoplasm. 
.A lu. Nucleus. Sec. s. Secretion space. N. gn. A ganglion of 
ventral nerve cord. P. Proboscis. 
back to open on the clitellum. The nucleus, which is irregular 
i ii shape, is either next to the secretion space or in it, and 
separated from the cytoplasm. The ducts of these two types 
of cells, filled with their characteristic secretion, are gathered 
into four bundles, which, just before the clitellum, are placed 
two in the dorsal and two in the ventral region. 
