PLATE XII. 
Figs. 1 3. Astarte malonensis Cragin (p. <;:>). 
See PL XI for additional figures. 
Figs. \ 6. Ptychomya stantoni sp. n. (p. G9). 
Fig. 4. Natural size. 
Figs. 5, <'>. Anol her specimen enlarged 1 •' diameters. 
Figs. 7,8. Unicardium ? transversum sp. n. (p. 7<"»i. 
Figs. 9 11. Unicardium V semirotundum sp. n. (]>. 7(5). 
134 
