31)0 CALIFOUNIA ACAUKMV OF SC'IKNOES. 



EXPLANATION OF PLATE XVIL 



FijT. I. Tt-rtbratalia hcmphilli Dall. Pliocene, Santa Barbara. View of pedicle valve. 



Longitude 57 mm. ; xo.6. 92 



Fig. 2. Same. Lateral view of both valves; xo.6. 92 



Fijj. %■ Same. View of brachial valve; xo.6. 92 



Fig. 4. Lt-da harnata Carpenter. Lower San Pedro series, Deadman Island. Longitude 



9.5 mm.; X4-5- 97 

 Fig. 5. Leda taphria Dall. Lower San Pedro series, Deadman Island. Longitude 



9.6 mm.; X4. 98 

 Fig. 6. Leda minula var. precursor, var. nov. Lower San Pedro series, Deadman Island. 



Type specimen. Longitude 9 mm.; X5. 97 



Fig. 7. Leda fossa Baird. Lower San Pedro series, Deadman Island. Longitude 



13.5 mm.; x3-2- 96 



Fig. 8. Mytilimeria nuttalli Conrad. Lower San Pedro series, Deatlman Island. Altitude 



17 mm.; XI.4. 126 



Fig. 9. Terebratalia smilhi, sp. nov. Pliocene, Deadman Island. Type specimen. Alti- 

 tude 50 mm. ; natural size. 93 



Fig. 10. Verticordia novemcostata Adams & Reeve. Lower San Pedro series, Deadman 



Island. Longitudes mm.; X4.5- 126 



Fig. If. Corbula luteola Carpenter. Lower San Pedro series, Deadman Island. Longi- 

 tude 8 mm.; X3. 181 



Fig. 12. Bornia reli/era'DAi.i.. Lower San Pedro series, Deadman Island. Interior view, 



showing hinge. Longitude 7.5 mm.; X4. 136 



Fig. 13. Yoldia scissurata Dall. Lower San Pedro series, Deadman Island. Longitude 



12.7 mm.; X4- 99 



