148 CALIFORNIA ACADEMY OF SCIENCES [Ptoc. 4th See. 



EXPLANATION OF PLATE 22 



PAGE 



Fig. \. Metalia cumminsi Kew. Lower surface of test. Cal. Acad. 



119 



Sci. No. 371 ; type. X 133 



90 

 Fig. 2. Clypeaster cf. concavus Cotteau. Upper surface of test. Cal. 



77 



Acad. Sci. No. 372. X 



50 



