PLATE IX. 



Zapheentis Stokesi, Milne-Edwards and Haime (page 1 20). 



Figure 1. Side view of a specimen from Lake Temisoaming, Que. 



Figure la. Longitudinal section of the same. 



Figure 2. Transverse section of a smaller specimen from the same looalitj-. 



Zaphkentis gigantea, Lesueur (page 125). 



Figure 3. Longitudinal section of a specimen from near Woodstock, Ont. 

 Figure 3a. Transverse section of the same. 



Amplexus Yandelli, Milne-Edwards and Haime (page 130). 



Figure 4. Side view of a specimen from near Woodstock, Ont. 

 Figure 4a. Longitudinal section of the same. 

 Figure 45. Transverse section of the same. 



Amplexus exilis, Billings (page 131). 



Figure 5. Side view of the type specimen; one-half the natural size. 



Figure 5a. Natural longitudinal section of the same ; one-half the natural size. 



Figure 6b. Transverse section of the same ; one-half the natural size. 



