EXPLANATION OF PLATE 11 



All figures approximately natural size 



Fig. 1. Cancellaria rapa, n. sp. Mouth view; no. 11097; Etchegoin Pliocene. 



Fig. la. Cancellaria rapa, n. sp. Opposite view of same specimen as figure 1. 



Fig. 2. Epitotiiurn varicostata Stearns. Mouth view; from locality 2975, 

 Zapato Creek, Fresno County; Pecten coalingensis zone, upper Etchegoin. 



Fig. Fissuridea unica, n. sp. Top view of type; no. 11100; from locality 

 2991, Zapato Creek, Fresno County; Pecten coalingensis zone, upper Etchegoin. 



Fig. '.'>a. Fissuridea unica, n. sp. Side view of same specimen as figure 3. 



Fig. 3ft. Fissuridea unica, n. sp. Side view of a specimen of medium size; 

 from locality 2991. 



Fig. 4. Purpura turris Nomland. Mouth view; from locality 2680; occurs 

 in both lower and upper Etchegoin. 



Fig. 4a. Purpura turrix Nomland. Opposite view of same specimen as 

 figure 4. 



Fig. 5. Trophon belcheri avitum, n. var. View of back; no. 11094; from 

 locality 2988, Zapato Creek, Fresno County; middle Etchegoin. 



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