/O SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



is SO distinct that there is no probabiHty of its having Hved in the 

 same province with the Mesonacid?e fauna of North America. The 

 North American Middle Cambrian fauna is distinctive in having 

 the brachiopod genus Nisusia Walcott and the trilobitic genera 

 Karlia Walcott, Ogygopsis Walcott, Biirlingia Walcott, Zacanthoides 

 A\'alcott, Oryctocara Walcott, and Neolemis Matthew. 



The Chinese Middle Cambrian fauna has in its upper portion a 

 few genera not known from the North American fauna. These 

 include, as described in this memoir, Damesella, Blackwelderia, Tein- 

 istion, Stephanocare, Drepanura, Shantungia, and Liostracina. The 

 faima containing the genera mentioned, like that of the genera listed 

 above from North America, belongs to a local fauna that did not 

 obtain a distribution outside of the limited area in which it lived. 

 It could not in either case have developed in the communicating seas 

 in which the greater world-wide and typical fauna of the Middle 

 Cambrian lived. 



The Upper Cambrian fauna of China, as now known, is essentially 

 the same in its generic aspect with that of western North Amer- 

 ica. This is discussed in the section on The Larger Faunal Hori- 

 zons [pp. 60-69]. 



A comparison of the faunas in the four local areas of the Cam- 

 brian in Asia shows the presence of three provinces : 



1. Shan-tung Province (including Manchuria and Shan-si sub- 



province). 



2. Pun-jab Province (including Yun-nan area). 



3. Siberian Province. 



The largest fauna is that of the Shan-tung subprovince. This 

 includes the Cambrian area in Shan-tung and its extension north- 

 ward in Manchuria. The species common to the Shan-tung and 

 Manchuria areas are : 



Protospongia chloris TeinistioTi typicalis 



Micromitra (Iphidella) pan- Stephanocare sinensis 



iiula ophirensis Blackwelderia sinensis 



Obolus chinensis Damesella brevicaudata 



Obolus damcsi Drepanura premesnili 



Obolus shansiensis Liostracina kransei 



Acrothele matthewi eryx Shantungia spinifera 



Acrotreta paciiica Solenopleura agno 



Acrotreta shantungensis Solenopleura beroe 



Hyolithes cybele Anomocare tnegalurus 



Orthotheca cyrene Anomocare minus 



Orthotheca delphus Anomocare subquadratum 



Agnostus chinensis Anomocarella chinensis 



Agnostus douvillei Anomocarella temenus 



Dorypyge richthofeni Dolichomctopus deois 



