EXPLANATION OF PLATE 7 



Fig. la. Clypeaster deserti Kew. Holotype, sijecimen 10056, Univ. Calif. Coll. 

 Invert. Pal. Upper surface of test. Natural size. Coyote Mountain, Imperial 

 County, Calif., Univ. Calif, loc. 2064. Lower division of Carrizo Creek beds, 

 Pliocene. 



Fig. lb. Cltiycaster deserti Kew. Same specimen. Lateral surface of test. 

 Natural size. 



Fig. 2o. Clypeaster carrizoensi-s Kew. Holotype, specimen 10047, Univ. Calif. 

 Coll. Invert. Pal. Upper surface of test. Coyote Mountain, Imperial County, 

 Calif., Univ. Calif, loc. 738. X 1%. Lower division of Carrizo Creek beds, 

 Pliocene. 



Fig. 2&. Clypeaster carrizoensis Kew. Same specimen. Lateral surface of 



test. X lyo. 



[166] 



