DESCRIPTION OK PLATE 29. 



Michelinia favositoides Girty (p. 312). 



1 . A massive corallum, showing the characters in the natural size. 



2. Transverse section, X 3. A thin section taken not quite perpendicular to the axis, showing the 



denticulated walls and the closely arranged tabulae. 

 Pennsylvania!! (Wu-shau limestone), near Ta-ning-hien (station 3). 



Dalmanella ? sp. Girty (p. 306). 



3. Dorsal valve, X 3. 



4. Ventral valve, X 3. 



Pre-Pennsylvanian (?), near Ta-miau-ss'i (station 9). 



Spirifer ? sp. Girty (p. 308). 



5. Dorsal valve, X 2. 



Pre-Pennsylvanian (?), near Ta-iniaii-b-si (.station 9). 



Spirifer sp. Girty (b) (p. 308). 



6. Medium-sized dorsal valve, .showing Implicate fold. 



7. Very young ventral valve in which a fold has not yet begun to develop in the sinus. 



Pre-Pennsylvanian (?), near Ta-miau-ssi (station 8). 



Rhynchonella ? sp. Girty (p. 309). 



8. Dorsal valve, X 2. 



Pre-Pennsylvanian (?), near Ta-miau-ssi (station 9). 



Schuchertella ? sp. Girty (p. 307). 



9. Dorsal (?) valve, X 3. 



Pre-Pennsylvanian (?), near Ta-miau-ss'i (station 9). 



Chonetes aff. C. flemingi Norwood and Pratten (p. 318). 



10. Ventral valve, X 2. 



Pennsylvanian, Y6n-yi-ss'i, Shan-si (station 20). 



Chonetes sp. Girty (p. 318). 



11. Ventral valve, X 2. 



Pennsylvanian, near Yen-chuang, Shan-tung (station 69). 



Marginifera ? sp. Girty (p. 320). 



12. Ventral valve. 



13. A crushed ventral valve. 



Pennsylvanian, near Ycn-chuaug, Shan-tung (station 69). 



Productus ? sp. Girty (p. 319). 



14. Dorsal valve, X 2. 



Pennsylvanian (Wu-shan limestone), near Ta-ning-hien (station 2). 



15. Another dorsal valve. 



Pennsylvanian (Wu-shan limestone), near Liang-ho-k'6u (station 7). 



Spirifer blackwelderi Girty (p. 320). 



1 6 Internal mold of a ventral valve. 



Pennsylvanian (Wu-shan limestone), near Ta-ning-hien (station i). 



17. Internal mold of a dorsal valve. 



Pennsylvanian (Wu-shan limestone), near Ta-ning-hien (station 2). 



Notothyris willisiana Girty (p. 324). 



1 8. Side view. 



19. Anterior view. 



20. Dorsal view. 



Pennsylvania!! (Wu-shan limestone), near L,iang-ho-k'6u (station 7). 



Hemiptychina ? aff. H. orientalis Tschernyschew (p. 324). 



21. Dorsal view of crushed specimen. 



Pennsylvanian (Wu-shan limestone), near Liang-ho-k'ou (station 7). 



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