EXPLANATION OF PLATE 22 



Figures approximately natural size. 



Fig. la. Astrodapsis margaritanus Kew, n. sp. Cotype, specimen 11023, 

 Univ. Calif. Coll. Invert. Pal. San Luis Obispo County, Calif., Univ. Calif, loc. 

 1697. Upper San Pablo group (Santa Margarita formation), Upper Miocene. 

 Upper surface of test. 



Fig. lb. Astrodapsis margariianu-s Kew, n. sp. Specimen 11035, Univ. Calif. 

 Coll. Invert. Pal. Upper surface of an elongate specimen. San Luis Obispo 

 County, Calif., Univ. Calif, loe. 1707. Upper San Pablo group (Santa Margarita 

 formation), Upper Miocene. 



Fig. 2o. Astrodapsis artwldi spatiosus Kevr, n. subsp. Holotype, speeimea 

 110-11, Univ. Calif. Coll. Invert. Pal. Upper surface of test. West side Salinas 

 Valley, Monterey County, Calif. Lower Etchegoin (Jacalitos) formation. Lower 

 Pliocene. 



Fig. 2b. Astrodapsis arnoldi spatiosus Kew, a. subsp. Same siaecimen. Lat- 

 eral surface of test. 



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