256 WALCOTT 



velopment of brachiopods, but only 5 species are present. In 

 Division V the large trilobite, Rcdlichia ncetlingi, may indicate 

 the horizon of the lower beds of the eastern China section or 

 the Middle Cambrian, as the genus ranges up to the summit of 

 the Middle Cambrian. Only 4 other species of fossils occur at 

 this horizon in India. My impression is that systematic search 

 will give a larger fauna from the Salt Range, and that when this 

 is obtained some revision of our present views of the stratigraphic 

 succession and age of the various parts of the known fauna may 

 be necessary. 



