NO. 4 CAMBRIAN FAUNAS OF CHINA IO3 



PAGE 



Ptychoparia (Eminrichclla) themio (Walcott) 79 



Figs. 9 and 9a. Top view and side outline of cranidium. X 4- The 

 type specimen of the species and subgenus. U. S. National 

 Museum, Catalogue No. 57603. 



Ptychoparia kochibei Walcott 78 



Fig. id. Dorsal shield. X 4- Flattened in the argillaceous shale. U. 

 S. National Museum, Catalogue No. 57569. 

 loa. Cranidium in limestone. X 4. U. S. National Museum, Cata- 

 logue No. 57570. 



Crepicephalus convexus Walcott 79 



Fig. II. Dorsal view of a broken specimen of the cranidium. X 3- 

 U. S. National Museum, Catalogue No. 57571- 

 iia. Dorsal view of pygidium. X 3- U. S. National Museum, 

 Catalogue No. 57572. 



Pterocephalus ? Itches Walcott 80 



Fig. 12. Dorsal view of the type specimen of the pygidium. X 4, U. 

 S. National Museum, Catalogue No. 57573- 



Inouyia melie (Walcott)^ 80 



Fig. 13. Top view and side outline of cranidium (X 3), the type speci- 

 men of the species and genus. U. S. National Museum, 

 Catalogue No. 57604. 



Inouyia ? thisbe Walcott 81 



Fig. 14. Dorsal view of the type specimen of the species. X 3- U. S. 

 National Museum, Catalogue No. 57574. 



^ By error a figure of the cranidium of Inouyia melie ^=: Agraulos ? melie 

 Walcott 1906 was put on the plate instead of the cranidium of Inouyia capax. 



