376 CALIFORNIA ACADEMY OF SCIENCES. 



EXPLANATION OF PLATE VIL 



Fig. I. Ahirex ( Chicorei(s) leea7ius 'Da.ia^. Upper San Pedro series, San Pedro. Longitude 



55 mm.; Xi-S- 243 



Fig. 2. Solariella peramabilis Carpenter. Pliocene, Deadman Island. Altitude 14 mm.; 



Xi-5- 335 



F'g- 3- Pleurotoma ( Dolichotoma) cooperi, sp. nov. Upper San Pedro series, San Pedro. 



Longitude 64 mm. ; natural size. 203 



Fig. 4. Admeie gracilior Carpenter. Lower San Pedro series, Deadman Island. Lon- 

 gitude 10.5 mm.; X3-3. 219 



Fig. 5. Cancellaria tritonidea Gabb. Upper San Pedro series, San Pedro. Longitude 



90 mm.; natural size. 218 



Fig. 6. Chrysodomus tabulaliis Baird. Pliocene, Deadman Island. Longitude 80 mm.; 



natural size. 228 



Fig. 7. Chrysodomus reciirostris Carpenter. Lower San Pedro series, Deadman Island. 



Longitude 28 mm.; X2. 228 



Fig. 8. Cancellaria cooperi Gabb. Upper San Pedro series, San Pedro. Longitude 



80 mm.; natural size. 217 



Fig. 9. Mangilia angulata Carpenter. Lower San Pedro series, Deadman Island. Lon- 

 gitude 8 mm.; X3-6- 212 



Fig. 10. Bela fidicula Gould. Lower San Pedro series, Deadman Island. Longitude 



II mm.; X4- 209 



Fig. II. Solariella cidaris Carpenter. Pliocene, Deadman Island. Altitude 42 mm.; 



natural size. 334 



