520 



CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Plate XIV. 



Fig. 1. Callistochiton dccoratus punctocostatus Pilsbry. Exterior view 

 of head valve from Deadman Island. San Pedro, California (probably 

 Pleistocene) [728]. 



Fig. 2. Callistochiton dccoratus punctocostatus Pilsbry. Interior view 

 of same valve ; same scale as preceding. 



Fig. 3. Callistochiton dccoratus punctocostatus Pilsbry. Right lateral 

 view of same valve; same scale as preceding. 



Fig. 4. Callistochiton dccoratus punctocostatus Pilsbry. Exterior view 

 of tail valve from Deadman Island, San Pedro, California (probably 

 Pleistocene) [715] ; same scale as preceding. 



Fig. 5. Callistochiton dccoratus punctocostatus Pilsbry. Interior view 

 of same valve ; same scale as preceding. 



Fig. 6. Callistochiton dccoratus punctocostatus Pilsbry. Right lateral 

 \ iew of same valve; same scale as preceding. 



Fig. 7. Callistochiton dccoratus fcrininicus Berry, n. snbsp. Exterior 

 view of type specimen, a median valve from the Chiton Bed, Point Fermin, 

 California (Lower San Pedro Pleistocene) [1(140] ; same scale as preceding. 



Fig. 8. Callistochiton dccoratus fcrininicus Berry, n. snbsp. Anterior 

 elevation of same valve; camera outline. 



Fig. 9. Callistochiton pahnulatus mirabilis Pilsbry. Dorsal view of head 

 valve from Long Wharf Canyon, Santa Monica, California (Upper San 

 Pedro Pleistocene) [522a] ; same scale as Figs. 1-7. 



Fig. 10. Callistochiton pahnulatus mirabilis Pilsbry. Interior view of 

 same valve ; same scale as preceding. 



Fig. 11. Callistochiton pahnulatus mirabilis Pilsbry. Left lateral view 

 of same valve; same scale as preceding. 



Fig. 12. Callistochiton pahnulatus mirabilis Pilsbry. Dorsal view of 

 less mature head valve from Long Wharf Canyon, Santa Monica, Cali- 

 fornia (Upper San Pedro Pleistocene) [522b] ; same scale as preceding. 



Fig. 13. Callistochiton pahnulatus mirabilis Pilsbry. Interior view of 

 same valve ; same scale as preceding. 



Fig. 14. Callistochiton pahnulatus mirabilis Pilsbry. Left lateral view 

 of same valve; same scale as preceding. 



Fig. 15. Callistochiton pahnulatus mirabilis Pilsbry. Exterior view of 

 median valve from Long Wharf Canyon, Santa Monica, California (Upper 

 San Pedro Pleistocene) [525] ; same scale as preceding. 



Fig. 16. Callistochiton pahnulatus mirabilis Pilsbry. Interior view of 

 same valve ; same scale as preceding. 



