UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 5, No. 17, pp. 271-274, Pis. 21-22 Andrew c. lawson, Editor 



NEW ECHINOIDS FROM THE TERTIARY 

 OF CALIFORNIA. 



BY 



Charles E. Weaver. 

 CONTENTS. 



PAGE 



Introduction t 271 



Clypeaster bowersi, n. sp 271 



Scutella perrini, n. sp 273 



Linthia(?) calif orniea, n. sp 273 



Schizaster( ?) stalderi, n. sp 274 



INTRODUCTION. 



The new echinoid forms here described and figured have been 

 examined in the course of a series of studies of the Ter- 

 tiary of California carried on by the author for several years. 

 The greater part of the included material was obtained and the 

 preliminary studies made by Professor Merriam. For the ex- 

 cellent material represented by these new species the author is 

 much indebted to the late Dr. Stephen Bowers, to Professor 

 James Perrin Smith, and to Mr. Walter Stalder. 



CLYPEASTEE BOWEESI, n. sp. 

 PL 21, fig. 1; and pi. 22, fig. 1. 



The test of this form is very large and thick. The largesl 

 specimens measured 119 mm. in diameter. The outline seen from 

 above is circular to elliptical. The margins are swollen and the 

 summit very slightly elevated. On the posterior margin is a 



