EXPLANATION OF PLATE 9 

 All figures approximately natural size 



Fig. 1. Hacoma inguinata affmis, n. var. Left valve; no. 11092; from 

 locality 2965, Garza Creek, Kings County, uppermost Etehegoin. 



Fig. la. Macoma inquinata affinis, n. var. Eight valve of same specimen 

 as figure 1. 



Fig. lb. Macoma inquinata affinis, n. var. Profile view of valves shown in 

 figures 1 anil ]n. 



Fig. 2. Anodonta nitida, n. sp. Left valve; a fresh-water species from 

 locality 2999, no. 11(191, Kettleman Hills, Kings County. 



Fig. 3. Semele fausta, n. sp. Right valve; from locality 2991, Zapato Creek, 

 Fresno County; no. 11102; Pecten coalingensis zone, upper Etehegoin. 



Fig. 3a. Semele fausta, n. sp. Hinge of left valve; from locality 2991. 



Fig. '.'>b. Semele fausta, n. sp. Hinge view of same specimen as figure 3. 



Fig. 4. Thracia formosa, n. sp. Left valve; from locality 2991, Zapato 

 ('reek, Fresno County; no. 11103; Pecten coalingensis zone, upper Etehegoin. 



Fig. 4k. Thracia formosa, n. sp. View of hinge of same specimen as 

 figure 4. 



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