Fig. 63. 
Fig. 64. 
Fig. 65. 
Fig. 66. 
Fig. 67. 
Fig. 68. 
Fig. 69. 
Fig. 70. 
Fig. 71. 
Wan». — Nectonema. 
PLATE V. 
Ventral aspect of head with brain, viewed as a transparent object in clove 
oil, 2.C. X 100. 
Nucleus of dorsal cell showing enclosed body (x). . Bóhmer's hamatoxy- 
lin. Apochr. 4 mm. Compens. Oc. 8. X 680. 
Nucleus of dorsal cell. Kleinenberg’s hematoxylin.  Apochr. 4 mm. 
Compens. Oc. 8. X 680. 
More regular nucleus of dorsal cell. Ehrlich's hematoxylin. Apochr. 
4mm. Compens. Oc. 8. x 725. 
Oblique section through basal portion of dorsal cell where the process 
enters and divides. Bohmer’s hematoxylin. Apochr. 4mm. Com- 
pens. Oc. 8. X 725. 
Small nervous nuclei of brain. Ehrlich’s haematoxylin. Apochr. 4 mm. 
Compens. Oc. 4. X 360. 
Nucleus of commissural cell showing enclosure similar to that of the dor- 
sal cell. Böhmer’s hematoxylin. Apochr.4 mm. Compens. Oc. 4. 
x 800. 
Nucleus of large ganglion cell in anal ganglion. Böhmer’s hematoxylin. 
Apochr.4 mm. Compens. Oc.8. X 725. 
Nuclei of cells in peripheral layer of anal ganglion. Ehrlich’s hematoxy- 
lin. Apochr. 4 mm. Compens. Oc. 8. x 725. 
