Il6 SMITHSOiNlAN MISCELLANKOUS COLLKCTIONS VOL. I03 



PLATE 7 



PAGK 



Maci'lhiira iransi'crsa, new species 43 



1. Hol(jtj'pe pygidium (X l-S)- 



Wilberns formation; (loc. I4f) Baitlctt Hollow, lUnnct County, Texas. 



Arapahoia stantoni, new species 44 



2. Holotype cranidium. 



3. 4. Pygidium (X2). 



Pilgrim formation; (loc. 26b) Mill Creek, Little Rocky Mountains, 

 Montana. 



Arapahoia rccsidci, new species 44 



5. Pygidium (X i-S)- 



6, 7. Dorsal and side views of the holotype cranidium (X2). 

 8, 9. Another cranidium (X2.5). 



Maurice formation; (loc. 26c) 6 miles south of Hailey, Wyoming. 



Arapahoia polita, new species 45 



10, II. Dorsal and profile views of the holotype cranidium (X i-S)- 

 Sullivan formation; (loc. 64h) East Lyell Glacier, 48 miles northwest 

 of Lake Louise, Alberta. 



Arapahoia ivalcottac, new species 46 



12, 13. Dorsal and side views of the holotype cranidium (X i-S)- 



14. A smaller, exfoliated cranidium (X 2). 



Sullivan formation; (loc. 64e) East Lyell Glacier, 48 miles northwest 

 of Lake Louise, Alberta. 



Arapahoia clongata, new species _. ._ 45 



15, 16. Dorsal and side views of the holotype cranidium (X i-5)- 



17. Libragene (X i-5). 



18, 19. Pygidium (X i-5)- (See also fig. 32.) 



Sullivan formation; (loc. 64h) East Lyell Glacier, 48 miles northwest 

 of Lake Louise, Alberta. 



Arapahoia prolixa, new species 46 



20, 21. Side and dorsal views of the holotype cranidium (X i-5)- 



22, 23. Pygidium (X i-5)- 



24, 25. A partially exfoliated cranidivun (X2). 



26. Libragene (X 1-5) • 



Sullivan formation; (loc. 64h) East Lyell Glacier, 48 miles northwest 

 of Lake Louise, Alberta. 



Arapahoia albertensis, new species 46 



27. Cranidium (X 3). 



28. 29. Side and dorsal views of the holotype cranidium (X3)- 



30. Side view of unexfoliated cranidium (X3). 



31. Libragene (X i.5). 



32. Pygidium and libragene of A. elongata (X i-S)- (See also figs. 



17-19.) 

 Sullivan formation; (loc. 64h) East Lyell Glacier, 48 miles northwest 

 of Lake Louise, Alberta. 



Kingstonia electro, new species 47 



33. 34- Dorsal and side views of the holotype cranidium (Xs)- 

 35, 36. A partially exfoliated cranidium (Xs). 



Weeks formation; (Iocs. 3oh, i) 5 miles south of Marjum Pass, House 

 Range, Utah. 



Arapahoia typa Miller 44 



37. Cranidium and pygidium (X i-5)- 



38. Libragene and pygidium (X i-5)- 



Maurice formation; Butte north of Little Rocky Creek, Beartooth 

 Range, Wyoming. 



