Plate 33 



Page 

 Figures 1-8. Orthis chincihsis, new species 41 



1, Limestone slab with three pedicle valves. 



2, Another slab with three brachial valves and a frag- 



ment of a pedicle valve. 



3, 4, Side view and exterior of a somewhat exfoliated 



brachial valve. 

 5, Exterior of a somewhat exfoliated brachial valve. 

 6-8, Three views of another specimen. 

 Ordovician : Huang-pa-yi, Shensi, China. 



9-12. Orthis chinensiti multistriata, new variety 42 



9, 10, Exteriors of two brachial valves. 

 11, 12, Exteriors of two pedicle valves. 

 Formation and locality same as Figure 1. 



13. Carabocriniis species undetermined 41 



The single plate found. 

 Ordovician, Chao-tien, Szechwan,. China. 

 14, 15. Plloceras manchuriensc, new species 63 



14, A natural vertical section of siphuncle of the holotype 

 showing a part of endosiphuncle. 



15, A lateral view of the same specimen. 



Uppermost Canadian, Santao formation: Gray arena- 

 ceous limestone, north of Pen-hsi-hu, Liao-tung, Man- 

 churia. 

 140 



