EXPLANATION OF PLATE 23 



Figures approximately natural siz^e. 



Fig. 1. Astrodapsis aruoldi crassus Kew, n. subsp. Specimen 11376, Univ. 

 Calif. Coll. Invert. Pal. Upper surface of test. Pence Enrico Canon, Monterey 

 County, Calif., Univ. Calif, loc. 2727. Lower Eteliegoin (Jacalitos) formation. 

 Lower Pliocene. 



Fig. 2a. Astrodapsis arnoldi depressus Kew, n. var. Holotype, specimen 

 11038, Univ. Calif. Coll. Invert. Pal. Upper surface of test. Coalinga district, 

 Fresno County, Calif., Univ. Calif, loc. 2973. Lower Etchegoin (Jacalitos) 

 formation. Lower Pliocene. 



Fig. 2b. Astrodapsis arnoldi depressus Kew, n. var. Same specimen. Lower 

 surface of test. 



Fig. 2c. Astrodapsis arnoldi depressus Kew, n. var. Same specimen. Lateral 

 surface of test. 



Fig. 3(7. Astrodapsis arnoldi fresnoensis Kew, n. var. Holotype, specimen 

 11032, Univ. Calif. ColL Invert. Pal. Upper surface of test. Coalinga district, 

 Fresno County, Calif., Univ. Calif, loc. 2973. Lower Eteliegoin (Jacalitos) 

 formation, Lower Pliocene. 



Fig. 31). Astrodapsis arnoldi f resnoensis Kew, n. var. Same specimen. Lower 

 surface of test. 



Fig. 3c. Astrodapsis arnoldi fresnoensis Kew, n. var. Same specimen. Lat- 

 eral surface of test. 



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