THE NAUTILUS. 79 



Notes. Named in honor of E. C. Templeton, Stanford Uni- 

 versity, California. 



Type. Museum, Stanford University, California. 



Locality. Western Pacific Railroad cut between Altamount 

 and Greenway, Tesla Quadrangle. 



Horizon. Upper Chico shale, upper Cretaceous. 



TEJON UPPER EOCENE. 



PANOPEA SMITHII, n. s. Hall and Ambrose. 



Description. Shell subquadrate, about twice as long as wide; 

 beaks small, nearly central but a little toward the posterior end. 

 Cardinal margin nearly straight anteriorly with end regularly 

 rounded, slightly sloping posteriorly with end abruptly trun- 

 cated, basal margin slightly concave. Posterior end gaping, 

 anterior end and basal margin closed. An angulated furrow 

 runs from the umbones to posterior end of basal margin. A 

 gently curved furrow runs from umbones to center of basal 

 margin, giving a bulging appearance to both dorsal and ventral 

 ends. Surface marked by coarse, rather regular ribs. 



Dimensions. Length, 72 mm.; width, 37 mm., apparently 

 from others found, this form represents the adult form. 



Notes. Named in honor of Professor James Perrin Smith, to 

 whom the authors are deeply indebted. 



Type. Museum, Stanford University, California. 



Locality. Creek cut opposite where Livermore road crosses 

 the Western Pacific Railroad, Corral Hollow, Tesla Quadrangle. 



Horizon. Tejon, Upper Eocene. 



MONTEREY LOWER MIOCENE. 

 MESODESMA PACIFICA, n. s. Hall and Ambrose. 



Description. Right valve. Cast. Shell subtrigonal, inequi- 

 lateral. Beak small. Posterior end truncate, at extremity 

 making angle of 133 at beak between posterior dorsal margin 

 and anterior dorsal margin, anterior margin straight, abruptly 

 truncated at end, deep furrow cutting at angle of 25 to anterior 

 dorsal margin from beak, gradually disappearing until obscure 

 at center of valve. 



Dimensions. Long. 40 mm.; alt. 22 mm.; diameter 4 mm. 



