Warp. — Nectonema, 
PLATE IIL 
Figs. 31-45. Transverse sections of the alimentary canal from a single series of 
sections. Mayer’s HCl carmine. Apochr. 4mm. Compens. Oc. 4. 
x 230. 
Fig. 31. Tth section of the series. 
A AM iti 
" a3 XK ~“ 
98 184, Slott E x | 
© Se Bb, im x 
“ 44. 55th “ p: 5 
"45 103d“ 4 a 
Figs. 46-48. Transverse sections of alimentary canal from the region where it is 
bounded by two cells alone to show diminution in size toward the pos- 
terior end. Apochr.4 mm. Compens. Oc. 4. x 230. 
Fig. 46. Kleinenberg's hematoxylin. 
Figs. 47, 48. Ehrlich’s hematoxylin. 
Fig. 49. Transverse section of alimentary canal to show the normal relation of 
the lumen to the cells. Kleinenberg's hematoxylin. 2. E. x 610. 
Figs. 50, 51. Transverse sections of the oesophageal cell in the same series. Ehr- 
lich’s hematoxylin. 2. E. X 610. 
Fig. 50. To show the relation of the nucleus to the chitinous tube. 
Fig. 51. Two sections beyond the section in Fig. 50 to show disappearance of the | 
chitinous tube. 
Fig. 52. Lateral aspect of intestine. The two cells of the opposite side are not 
shown. Ehrlich’s hematoxylin, 2.C. x 165. 
