398 CALIFOKNIA ACADEMY OF SCIENCES 



EXPLANATION OF PLATE XVIIL 



Fig. I. Kellia suborbiailaris Montagu. Lower San Pedro series, Deadman Island. 



Interior view of left valve. Longitude 8 mm. ; X4-3. 137 



Same specimen. Outline, showing convexity of valve; X4.3. 137 



Pandora { Ke7uierlia) bicarmata Carpenter. Lower San Pedro series, Deadman 



Island. View of imperfect left valve. Longitude 14 mm. ; X3. 123 



Pandora {Kennoiia) Jilosa Carpenter. Lower San Pedro series, Deadman Island. 



Left valve. Longitude 15 mm.; X3. 124 



Area lahiata Sowerby. Upper San Pedro series, San Pedro. Longitude 28 mm.; 



XI. 3. lOI 



Diplodonta serricata Reeve. Upper San Pedro series, San Pedro. I^ongitude 



10.2 mm.; x3-3- '34 



Same. Outline, showing convexity of valve; X3.3. 134 



Nttcula suprasiriata Carpenter. Upper San Pedro series, Los Cerritos. Longi- 

 tude 7 mm.; X4.7- 96 

 Fig. 7. Kellia laperousii Deshayes. Lower San Pedro series, Deadman Island. Interior 



view. Longitude 23 mm. ; X2. 137 



Same. Outline, showing convexity of valve; X2. 137 



Diplodonta orbella Gould. Lower San Pedro series, Deadman Island. Longitude 



9.2 mm.; X3.3. I34 



Same. Outline, showing convexity of valve; X3.3. 134 



Glycymeris barbamisis Conrad. Upper San Pedro series, San Pedro. View of 



interior. Longitude 25 mm. ; xi-3- 100 



Glycymeris septcntrionalis Middendorff. Upper San Pedro series, San Pedro. 



View of interior. Longitude 22 mm. ; xi-3. loi 



Ne^ra pec f inula CKKPKtiTKV.. Lower San Pedro series, Deadman Island. Imper- 

 fect valve. Longitude 6.5 mm. ; X5.4. tSi 



Astarte {Crassinella) branneri sp. nov. Upper San Pedro series, Los Cerritos. 



Type specimen, interior view. Longitude 11. 2 mm. ; X2.7. 127 



