380 CALIFORNIA ACADEMY OF SCIENCES. 



EXPLANATION OF PLATE IX. 



Fig. I. Pleurotoma ( Borsonia) barischi, sp. nov. Lower San Pedro series, Deadman 



Island. Type specimen. Longitude 18.5 mm.; X34- 200 



Fig. 2. Bitlium qiiadrifilatimi Carpenter. Lower San Pedro series, Deadman Island. 



Longitude 10 mm.; X3- 292 



Fig. 3. Mangilia striosa C. B. Adams. Upper San Pedro series, Los Cerritos. Longitude 



9.4 mm.; X3- 215 



Fig. 4. Pleurotoma ( Leucosyrinx) pedroana, sp. nov. Lower San Pedro series, Deadman 



Island. Type specimen. Longitude 17 mm.; XS- 202 



Fig. 5. Mangilia hooveri, sp. nov. Upper San Pedro series, San Pedro. Type specimen. 



Longitude 11 mm.; X3. 212 



Fig. 6. ActcBon ( Rictaxis) pundocoelaia Carpenter. Upper San Pedro series, San Pedro. 



Longitude 5.9 mm.; X3- 189 



Fig. 7. Mangilia (Taranis) stro7igi, sp. nov. Lower San Pedro series, Deadman Island. 



Type specimen. Longitude 12 mm.; X3.5. 215 



Fig. 8. Cohimbella ( Anachis) minima, sp. nov. Upper San Pedro series, San Pedro. Type 



specimen. Longitude 5.5 mm.; X3. 237 



Fig. 9. Eulima hastata Sowerby. Upper San Pedro series, San Pedro. Longitude 



10 mm.; X3-4- 268 



Fig. 10. Mangilia (Cythara) branneri, sp. nov. Lower San Pedro series, Deadman Island. 



Type specimen. Longitude 10 mm.; X3.2. 211 



Fig. II. Ocinebra lurida \Ar. cancellina Philippi. Upper San Pedro series, San Pedro. 



Longitude 2i mm.; X2. 257 



Fig. 12. Ezilima tnicans Carpenter. Lower San Pedro series, Deadman Island. Longi- 

 tude 12 mm.; X3.5. 269 



Fig. 13. Planorbis tumidus Pfeifker. Upper San Pedro series, San Pedro. Ma.ximum 



diameter 12.7 mm. ; X3. '95 



Fig. 14. Planorbis verrnicnlaris Gould. Upper San Pedro series, San Pedro. Maximum 



diameter II. 5 mm.; X3- ^95 



Fig. 15. Eulima falcata Carpenter. Lower San Pedro series, Deadman Island. Longi- 

 tude 7 mm.; X3. 268 



Fig. 16. Eupleura muriciformis Broderip. Upper San Pedro series, San Pedro. Longi- 

 tude 33 mm. ; natural size. 248 



Fig. 17. Scala bellastriataQKV.v^.^i'e.v.. Figure of living shell from San Pedro. Longitude 



18 mm.; X2. 263 



