580 CALIFORNIA ACADEMY OF SCIENCES. 



EXPLANATION OF PLATE IX. 



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



Island. Type specimen. Longitude 18.5 mm.; X3-4- 200 



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



Longitude 10 mm.; X3- 292 



Fig. 3. Ma7igilia striosa C. B. Adams. Upper San Pedro series, Los Cerritos. Longitude 



9.4 mm.; X3- 215 



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



Island. Type specimen. Longitude 17 mm.; X3. 202 



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



Longitude 11 mm.; X3. 212 



Fig. 6. Act(Z07i ( Rictaxis) puncloccelaia Carpenter. Upper San Pedro series, San Pedro. 



Longitude 5.9 mm.; X3. 189 



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



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



Fig. 8. Columbella ( Anackis) mi7iima, s]i. nov. Upper San Pedro series, San Pedro. Type 



specimen. Longitude 5.5 mm.; X3. 237 



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



ID mm.; X3-4- 268 



Fig. ID. Mangilia (Cythara) bratitieri, sp. nov. Lower San Pedro series, Deadman Island. 



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



Fig. II. Ocinebra hirida vax. cancellina Philippi. Upper San Pedro series, San Pedro. 



Longitude 21 mm.; X2. 257 



Fig. 12. Eulima 7>ticans Carpenter. Lower San Pedro series, Deadman Island. Longi- 



tutle 12 mm.; X3-5. 269 



Fig. 13. Pla7iorbis tu77iidus Pfeiffer. Upper San Pedro series, San Pedro. Maximum 



diameter 12.7 mm.; X3. 195 



Fig. 14. Pla/iorbis vermicularis GouLD. Upper San Pedro series, San Pedro. Maximum 



diameter 1 1.5 mm.; X3- I95 



Fig. 15. Euli//ia falcala Carpenter. Lower San Pedro series, Deadman Island. Longi- 

 tude 7 mm.; X3. 268 

 Fig. 16. Eupletira 77iuricifor77iis Broderip. Upper San Pedro series, San Pedro. Longi- 

 tude 33 mm. ; natural size. 248 

 Fig. 17. Scala bellastriata CKlLVE.TflTR'R.. Figure of living shell from .San Pedro. Longitude 



18 mm.; X2. 263 



