68 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



Plate 6 



PAGE 



Dolichometopsis gregalis, new species 34 



1, 2. Holotype cranidium (X 1-5). 



3, 4. Pygidium (X i-S)- 



Locality 59c 

 Dolichometopsis communis, new species 35 



5, 6. Holotype cranidium (X 1.5). 



7, 8. Pygidium (X 1.5). 



Kochina vcnusta, new species 53 



9, 10. Holotype cranidium (X3)- 

 Dolichometopsis mansfieldi, new species '. 36 



11, 12. Cranidium (X 1.5). 



13, 14. Holotype cranidium. 



15. Hypostoma (X2). 



16. Cranidium and pygidium. In association are a cranidium and libra- 



gene of Kochiclla mansfieldi, Clavaspidclla, and Poulscnia. 

 Dolichometopsis potens, new species 36 



17. 18. Small cranidium (X2.5). 



19. Holotype cranidium (X I-S). 



20. Another small cranidium (X 1.5). 



21. 22. Hypostoma. 



23. Partial pygidium, impression of cranidium, and fragment of 

 Olcnoides pygidium (X 1-5). 



Plate 7 



Ptarmigania agrcstis, new species 39 



1, 2. Holotype cranidium (X 1.5). 

 Ptarmigania altilis, new species 40 



3, 4. Holotype cranidium (X 1-5). 



5. Libragene (X 1.5). 



Dolichometopsis gravis, new species 36 



6, 7. Holotype cranidium (X 1.5 ). 



8, 9. Smaller cranidium. 

 10, II. Pygidium (X 1.5). 



Ptarmigania sobrina, new species 40 



12, 13. Holotype cranidium, pygidium, libragene, and other frag- 



ments (X 1.5). 



14, 15. Pygidium (X 1.5). 



Ptarmigania gcrmana, new species 41 



16. Cranidium (X 1-5)- 



17, 18. Holotype cranidium (X 1-5). 

 19, 20. Pygidium (X 1.5). 



Plate 8 



Ptarmigania dignata, new species 41 



I, 2. Large pygidium (X 1-5)- 



3. Libragene (X 1.5) • 



4, 5. Pygidium (X 1.5). 



6, 7. Holotype cranidium (X 1-5). 



