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



EXPLANATION OF PLATE XLIV. 



Middle Trias, Daonella beds, on divide between Troy Canyon and the south 

 fork of American Canyon, West Humboldt Range, Nevada. 



Page 



Fig. I. Ceratites vogdesiSM.\TYi.,s'^.\\ov 384 



Figs. 2-3. Ceratites (Gymnotoceras) blakei Gabb 386 



Fig, 4. Eutomoceras dtintti Smith, sp. nov 381 



Fig. 5. Daonella dubia Gabb 405 



