PLATE XXI. 
Figs. 1-3. Nerinea goodellii sp. n. (p. i)<5). 
Figs. 4, 5. Nerinea circumvoluta sp. n. (p. 07). 
Fig. 4. Longitudinal section enlarged 2 din meters. 
Figs. '•>. Nerinella stantoni sp. n. (p. 98). 
Fig. s. Fragmenl enlarged 3 diameters. 
Fig. 9. Longitudinal section of same fragment enlarged. 
Fig. 1<». Pseudomelania goodellii sp. n. (p. 95). 
1 5i 
