EXPLANATION OF PLATES 



Numbers of specimens refer to specimens in the University of California 

 Collection of Invertebrate Paleontology. 



EXPLANATION OF PLATE 24 



Fig. 1. Cucullaea (?) cordiformis, n. sp. Type no. 12311, loc. 2158. 

 Fig. 2. Cucullaea lirata, n. sp. Left valve of cotype, no. 12312, loc. 2149. 

 All figures approximately natural size. 



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