373 Dominican Fossils — Maury 209 



Montacuta hispaniolcc, n. sp. 



Plate 39, Figure 4 



Sh ell thin, inequilateral, but not so strikingly so as the two 

 preceding species, and at once differentiated from them by its de- 

 pressed form ; anterior end somewhat longer than the posterior 

 and both extremities evenly rounded ; beaks low, inconspicuous, 

 a cute ; a faint, broad, medial sulcus passes from the umbones to 

 the ventral margin ; surface with regularly spaced, elevated, con- 

 centric lines becoming obsolete and irregular towards the ventral 

 margin ; nearly the entire surface is covered with faint, radiating 

 strise ; hinge very delicate with a feeble cardinal and no lateral 

 teeth. Length of shell 7.25, altitude 5, semidiameter .75 mm. 

 Locality. — (Exp'd '16) Bluff 3, Cercado de Mao. 



Genus Cardium Linne 



Cardium ( Tr achy cardium) dominicanum Dall 



Plate 36, Figure 1 



Cardium sub-elongatum Gabb (in part), Trans. Amer. Phil. Soc, vol. 



r 5> P- 2 5°> 1873. Not of Sowerby, 1840. 

 Cardium (Trachy cardium) dominicanum Dall, Trans. Wagner In:-t. 



Sci., vol. 3, pt. 5, p. 1082, 1900. 

 Cardium {Tr achy cardium) dominicanum Brown and Pilsbry, Proc. 



Acad. Nat. Sci. Phila., p. 367, 1911. 



We collected quantities of this species which answers in every 

 respect to Dr. Dall's figure and description. It was also collected 

 by Powell near Gatun on the line of the Panama Canal. 



Locality.- — (Exp'd '16) Bluff 3 (very abundant), Bluff 2 

 (very scarce), Cercado de Mao. 



Cardium ( Trachy cardium) lingua-tigris, n. sp. 



Plate 36, Figure 2 



Cf. Cardium lingua-leonis Guppy, Quart. Jour. Geol. Soc. London, 



vol. 32, p. 531, 1876. 

 Not Cardium lingua-leonis Guppy. Id, vol. 22, p. 293, pi. 18, fig. 7, 



1866. 



