ILLUSTRATIONS. 



Page. 



Map of Tertiary lake basiu at Florissant, Colorado Frontispiece. 



Plate I. Insects from bone caves and interglacial clays 1X7 



II, III. Insects from tlie Tertiary deposits of British Columbia 669-672 



IV. Insects from miscellaneous Tertiary deposits, including one species from the Lar- 

 amie formation 673 



V-X. Insects from the Tertiary deposits of Green River, Wyoming 675-686 



XI. Araclmida from the Tertiary deposits of Florissant, Colorado 687 



XII-XV. Neiiroptera from the Tertiary deposits of Florissant 689-696 



XVI, XVII. Orthoptera from the Tertiary deposits of Florissant 697-700 



XVIII-XXVIII. Hemiptera from the Tertiary deposits of Florissant 701-722 



Figs. 1-3. Planocephalas aselloides 95 



9 



