148 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



EXPLANATION OF PLATE IX. 



Page. 

 Placenticeras pacificnm Smith. 79 



(After J. P. Smith, Proc. Cal. Acad. Sci., 3d Ser., Geol., 

 Vol. I, Plate XXVI; figure redrawn.) 

 Fig. 180. Adult shell, diameter 172 mm., six and one-sixth 

 coils; natural size. Henley, California. 

 Erato veraghoorensis (?) Stol. 75 



Figs. i8r-i82. Shell, natural size. 

 Haliods lomacttsis, sp. nov. 75 



Fig. 183. Shell; natural size. 

 Hamites ( Ptyclioceras) sola7to'ensc, sp. nov. 90 



Fig. 184. Rear view of body-chamber; natural size. 

 Inoceramus klamaihensis, sp. nov. 73 



Fig. 185. View of left valve. 

 Fig. 186. Left valve with hinge; natural size. 

 Acanthoceras compresstim, sp. nov. 107 



Fig. 187. Shell; natural size. 

 Inoceravms adimca, sp. nov. 73 



Figs. 188-189. Front and rear views of adult shell. 



