Vol. VII] WARING— STRATIGRAPHIC AND FAUN A L RELATIONS 93 



rounded and more prominent above ; base nearly straight ; pos- 

 terior produced and sharply rounded ; umbonal ridge prominent 

 and running to posterior margin ; cardinal margin sloping at an 

 angle of about 45 degrees ; surface marked by alternating single 

 and double radiating ribs which are crossed by fine to coarse 

 lines of growth. From one and one-half miles east of McCray 

 wells. L. S. J. U. Pal. Coll. Named in honor of Mr. R. B. 

 Moran of Los Angeles. 



Glycimeris maccra)^, new species 



PI. IS, Fig. 1 



Shell small, of medium thickness and moderate convexity ; 

 umbone prominent, central, incurved ; cardinal margin slightly 

 convex and flared ; anterior margin slightly produced above, 

 broadly rounded below ; basal margin broadly convex ; posterior 

 slightly produced above, broadly rounded below; surface 

 marked by medium-size rounded, radiating ribs, which are 

 crossed by lines of growth. Locality 8, L. S. J. U. Pal. Coll. 

 This species has its closest resemblance in Glycimeris veatchii 

 Gabb, of the Chico, but is less convex, and more symmetrical. 



Isocardia tejonensis Waring 

 PI. 15, Fig. 14 



/. tejonensis Waring, Jour, of Geol., vol. 22, no. 8, pp. 784- 

 5, Nov.-Dec, 1914. 



Shell of medium size, thin; valves equal, inflated, rotund, 

 completely closed, margins plain, beaks prosogyrous; surface 

 marked by concentric band-like ribs, which become fine and 

 nearly obsolete on the beaks. Locality 8, L. S. J. U. Pal. Coll. 

 No other species of Isocardia has so far been described from the 

 Eocene of California. 



Marcia conradiana (Gabb) 

 PI. 14, Fig. 3, PI. 15, Fig. 7 



Tapes conradiana Gabb, Pal. Cal., vol. 1, p. 169, pi. 32, fig. 

 282. 



"Shell long, narrow, very inequilateral, oblique; beaks prom- 

 inent and placed about a third the distance from the anterior 



