130 SMITHSONIAN MISCIiLLANKOUS COLLECTIONS VOL. I03 



PLATE 21 



PAGE 



Taenichephalus sfriatifrons, new species 103 



1. Holotype cranidium (X4-5)- 



2, 3. A larger cranidium (X2). 



St. Charles limestone; (loc. 54e) Blacksmith Fork, Bear River Range, 

 Utah. 



Taenicephahis utahcnsis, new species 103 



4, 5. Exfoliated cranidium (X2.5). 



6. Holotype cranidium (X2.5). 



St. Charles limestone; (loc. 54e) Blacksmith Fork, Bear River Range, 

 Utah. 



Taeniccplialus modest us, new species 104 



7. Holotype cranidium (X3)- 



St. Charles limestone; (loc. 55h) Blacksmith Fork, Bear River Range, 

 Utah. 



Taenicephahis texanus, new species 104 



8. 9. Side and dorsal views of the holotype cranidium (X2.5). 

 10-12. Three other cranidia in various states of preservation (X2.s). 

 Wilberns formation; (loc. 68) Packsaddle Mountain, 11 miles south- 

 east of Llano, Texas. 



Taenicephahis imchitaensis, new species 105 



13. Exfoliated cranidium (X2). 



14, 15. Dorsal and side views of the holotype cranidium (X3)- 

 16, 17. Two other cranidia (X2.5). 



Honey Creek limestone; (loc. Qq) Blue Creek Canyon, 15 miles north- 

 west of Fort Sill, Wichita Mountains, Oklahoma. 



Taeniccplialus quinnensis, new species 105 



18, 19. Incomplete cranidium (X i-5)- 

 20, 21. A pygidium (X2). 



22. Holotype cranidium (X2.5). 



23. Libragene (X2). 



Mendha limestone; (loc. 7J) i mile north of Italian Ranch foothills, 

 Quinn Canyon Range, Nevada. 



Taenicephahis castlcnsis, new species 106 



24. 25. Dorsal and side views of the holotype cranidium (X2). 



Dry Creek formation; (loc. 62s) Castle Peak, north of Squaw Creek, 

 Gallatin Range, Montana. 



Talbotina uhichi, new species 107 



26. Holotype cranidium (X2). 



Wilberns formation; (loc. 14b) Cold Creek, opposite north end of 

 Sponge Mountain, Texas. 



Talbotina Candida, new species 107 



27, 28. Dorsal and side views of the. holotype cranidium (X2). 

 Wilberns formation ; (loc. 14b) Cold Creek, opposite north end of 



Sponge Mountain, Texas. 



Bunwtia pennsylvanica, new species 84 



29. 30. Side and dorsal views of the holotype cranidium. 



31. Smaller cranidium (X2). 



Ore Hill formation; (loc. i07e) i mile south of Ore Hill, Pennsylvania. 



Taenicephahis Wyoming ensis, new species 106 



32. Holotype and other cranidia, and libragene (X i-S)- 



Snowy Range formation; head of Buffalo Fork, west side of Big Horn 

 Mountains, Wyoming. 



