25 
Sections (fig’s. 16 to 25) confirm the surface views, and show certain 
additional characters. There are two quite distinct thickenings of the 
cuticle at the lateral band, near the lateral line. The dorsal and the 
ventral halves of the lateral band are seen to vary considerabl}" in 
transverse outline as sections are followed caudad, and the two halves 
are not symmetrical, one to the other. The nuclei are seen to be 
more massed and more numerous near the dorsal and ventral marg’ins 
of each half than between these points; most of the nuclei are situated 
centrifugally (distall}^), but here and there nuclei are found some dis- 
tance proximally (away from the cuticle); further, cellular prolonga- 
'fOO 
1 
Fig. 16. 
Figs. 16-25. — Nine transverse sections of the lateral band and the excretory gland in different 
parts of the body, except that figs. 19 and 20 and figs. 21 and 22, represent the two glands on 
opposite sides of the same cross sections. Fig. 16 is anterior of the nucleus and shows a bladder- 
like widening {ex. c.), apparentl}' belonging to the excretory canal. Fig. 17 is through the 
nucleus. Note the excretory canal {ex. c.) on the nonnucleated side. Dorsally of the nucleus 
is a thick-walled canal-like structure. The' nucleus is somewhat contracted from the nuclear 
membrane. Fig. 18 is a section caudad of the point of union of the bridge. Figs. 19-20 show 
the two lateral bands and two glands from one section. Note their asymmetry. Figs. 21-22 
show the two lateral bands and glands further caudad. Fig. 23 shows a section in which the 
gland has reduced in cross section and exhibits a reticular structure. Fig. 24 shows a section 
still farther caudad. Fig. 25 shows a section near the caudal end of the gland. The latter is 
very small. 
tions are seen to extend centripetally, toward the proximal margin of 
the lateral band; in some cases these cells were followed nearh^ or 
quite to the proximal margin; in some sections there appeared to be a 
decidedly distinct differentiation in the proximal (centripetal) portion, 
