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



EXPLANATION OF PLATE XLVL 



Page 



Paratropites dittniari Mojsisovics, front view 396 



Proclydonautibcs triadicus Mojsisovics, front view 401 



Tropites dilleri Smith, sp. nov., front view and septa. . 393 



Tropites torquillus Mo]S\sovics, front view and septa . . 394 

 Sagenites (Trachysagenites) herbichi Mojsisovics, 



front view and septa 399 



Figs. 9-9«- Trachyceras (Protrachyceras) shastense Smith, front 



view and septa (septa enlarged one and a half times) 391 



Fig. ID. Eutomoceras sandlingense Hauer, rear view 397 



