DESCRIPTION OF PLATE 29 Continued. 



Dielasma ? cf. D. elongatum Schlotheim (p. 327). 



22. A dorsal valve of not quite medium size, showing the muscular imprints. 

 23! A small dorsal valve of somewhat different shape. 



24. A small ventral valve. 



Post-Pennsylvanian (?) (K'ui-chou scries), near Ta-ning-hien (station 5). 



Aviculipecten ? richthofeni Girty (p. 328). 



25. Right valve. 



26. Left valve, X 4- 



Post-Pennsylvanian (?) (K'ui-chou series), near Ta-ning-hien (station 5). 



Schizodus cf. S. curtus Meek and Worthen (p. 325). 



27. Internal mold of a right valve. 



Pennsylvanian (Wu-shan limestone, near middle), near Ta-ning-hien (station 16). 



Phillipsia sp. (a) Girty (p. 326). 



28. A somewhat crushed and worn pygidium. 



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



3.U 



