ILLUSTRATIONS 



PLATES 



Following 

 page 



1. Map of Petrified Forest National Monument, Arizona 140 



2-4. Evidence of Triassic insects 140 



5. Leaf hoppers of genera Pagaronia, Errhomus, and Friscanus 170 



6. Leafhoppers of genera Errhomus, Thatuna, and Lystridea 170 



7. Subspecies of Chondropometes (Chondropometes) vignalense 403 



8. Species and subspecies of Chondropometes {Chondropometes) 403 



9. Subspecies of Chondropometes {Chondopometes) torrel 403 



10. Species and subspecies of tbe subgenera Chondropometes and Chon- 



drothijroma 403 



11,12. Species and subspecies of Chondropometes (Chondrothi/roma) 403 



13. Species and subspecies of Chondropometes, Tnrrithiira, and Heyi- 



dersonina 408 



14. Species and subspecies of Turrithyra 403 



15, 16. Species and subspecies of Chondrothyra 403 



17. Species and subspecies of Chondrothyretes and Chondrothyra 403 



18-23. Species and subspecies of Chondrothyretes 403 



24. Species and subspecies of Chondrothyrella {Chondrothyrella) 403 



25. Subspecies of Chondrothyrella (Plicathyrella) assimilis 403 



26. Species and subspecies of Chondrothyrella (Chondrothyrella) 403 



27. Species and subspecies of Chondrothyrella (Plicathyrella) 403 



28. Species and subspecies of Chondrothyrimn 403 



29-32. Species and subspecies of Chondropoma (Chondropoma) 403 



33-34. Species and subspecies of Chondropoma (Chondropomorus) 403 



35. Species and .subspecies of Chondropoma 403 



36. Subspecies of Chondropoma (Chondropomartes) irradians 403 



37. Species and subspecies of Chondropoma 403 



38. Species and subspecies of Chondropoma (Gutierresium) 403 



39. Species and subspecies of Chondropoma (Chondropomisca) 403 



TEXT FIGURES 



Page 



1. Species of Phytholaeina 9 



2. Sula (Microsula) avita, new species: Lower end of humerus 23 



3. (^ula (Microsula) avita, new species 24 



4. Protostrix mimica, new species : Distal end of tibiotarsus 28 



5. Protostrix mimica, new species : Distal end of metatarsus 29 



6. Bathysaurops malayanus, new genus, new species 33 



7. Bathyclupea mcgaceps, new species 33 



8. Bathyclupea gracilis, new species 35 



9. Hoplostethus melanopterus. new species 35 



vin 



