390 CALIFORNIA ACADEMY OF SCIENCES. 



EXPLANATION OF PLATE XIV. 



Fig. I. Vetius (Chione) succincla Valenciennes. Upper San Pedro series, San Pedro. 



Exterior of right valve. Longitude 54 mm.; natural size. 149 



Fig. 2. Venus ( Chione) fludifraga Sowerbv. Upper San Pedro series, S;»n Pedro. E.x- 



terior of right valve. Longitude 25 mm.; xi-?- I47 



Fig. 3. Vemts (CAwne) negleda Sowerby. Upper San Pedro series, San fedro. Lon- 

 gitude 30 mm.; X2.2. 148 



Fig. 4. Tapes staminea Conrad. Upper San Pedro series, San Pedro. Longitude 50 mm.; 



natural size. 150 



Fig. 5. Tapes lacineata Carpenter. Upper San Pedro series, Los Cerritos, Longitude 



10 mm.; x i.i- 150 



Fig. 6. Tapes tenerrima Carpenter. Upper San Pedro series, San Pedro. Longitude 



84 mm.; natural size. 151 



