PLATE XXII. 



Page. 



Fics. 1-3. Medlicotti.y copei White 4S 



Wichita Permian, military crossing of Big Wichita River, Baylor County, Tex. 

 Specimen in Xat. ilus. 



Fiiis. 4-8. Waagenoceras cumminsi White 139 



Wichita Permian, locality same as above. 

 Specimen in Nat. Mus. 



Fiiis. 9-11. PoPANocERAS WALCOTTi White 134 



Wichita Permian, locality same as above. 

 Specimen in Nat. Mus. 



Note. — This plate was PI. J, Bull. V. S. (leol. Survey No. 77. 



192 



