I40 Bulletin 39 313 



small and curved to the left; anterior sinus small and round- 

 ed. 



IvCngtli 39, basal diameter 25, height or vertical diame- 

 ter 17 mm. 



A small shell with strongly depessed and angulated' sides. 

 Collected from the coral limestones of Port Limon. 

 Gatun Stage: Port Limmi, 



Cpyraea cf. domifiicensis Gabb 



Cypraea Dominicensis Gabb, 1873, Amer, Phil. Soc, vol. 15, p. 

 236. 



Cypraea dominicensis Maury, 1917, Bull, Amer. Pal,, vol. 5, p. 28o» 

 pi. 19, fig. II 



Our collection contains a single, fragmentary shell from the 

 coralline limestones near Limon, This specimen agrees closel)^ 

 with the Dominican shell figured by Dr. Maury as C. do^ninicen- 

 sis ?. It is characterized by its very thin shell, cylindroid form, 

 and straight, evenly denticulated apertrue. 



Length 28, height 12 mm. 

 Gatun Stage: Port Limon. 



Cypraea c'nerea Gnielin Plate 12, figure 8 



Cypjaea cinerea Gmelin, 1792, Syst. Nat., p. 3404. 



Cypraea cinerea Reeve, Icon., vol. 3, pi, 22, fig. 124. 



Cypraea cinerea Gabb, 1881, Journ. Acad. Nat. Sci. Phila., vol. 8, 2nd 

 series, p. 360. 



The Cypraea cinerea is a common, small species of Cowry 

 shell along the north coast of Panama and Costa Rica. Several 

 small Cypraeas were collected from the Gatun sandstones of 

 the Rio Blanco which cannot be distinguished from recent ex- 

 amples of cinerea. 



Gatun Stage: Rio Blanco. 

 Cypraea almirantensss, n. sp. Plate 12, figure 9 



Shell large, heavy and rather high; the outlines of the shell 



