Geol.— Vol. II.] ANDERSON— STRATIGRAPHIC STUDY I93 



at specific identification, along with other Eocene species 

 occurring in very nearly the same horizon. These Foramin- 

 ifera are as follows: 



Nodosaria Cyclammina 



Lagena (?) Pulvulina 



Sagrina Polymorphina (?) 

 Vagittnlina 



Some of the species of Foraminifera are very large, and 

 can be easily seen with the unaided eye. Some species of 

 Nodosaria attain a length of three-fourths of an inch, and all 

 of them are easily distinguished with a good lens. Most of 

 the forms are found in calcareous concretionary masses, 

 occurring as lenses in the argillaceous beds described in 

 this paper as the Kreyenhagen Shales. 



ECHINODERMATA. 



Eocene and Miocene. 

 Scutella sp. A. n. sp. 



Plate XIII, Fig. 8. 



Test small, thin, disk-like, oval or sub-pentagonal; anal pore supermar- 

 ginal; apical star symmetrical, but not central; calyx open. 



The numerous specimens of this species which were found, 

 are immature and cannot yet be satisfactorily described. 

 Most of them are laterally convex and small. 



Occurrence. — The species is not rare in the Avenal Sands 

 west of Coalmga. 



Astrodapsis merriami n. sp. 



Plate XIV, Figs. 33 and 34. 



Disk small, circular, depressed; margin only slightly notched at the 

 ambulacral extremities; apex central, only slightly elevated, star symmet- 

 rical, petals equal but not reaching the margin of the disk, and slightly 

 elevated; anal pore marginal; ambulacral furrows of inferior surface straigiit 

 and simple. The largest specimens have a diameter of i)^ inches, though 



