6b. Cross section, showing the position and form of endoconch, and the 

 shape of endocone. 



Log: — San-shan-yuan, Chung-yang-hsien, SE. Hupeh. (N. R. I. Cat. 



No. 13) 



Fig. 7. V aginoceras neichianense Yii. Nat. size p. 39 



7a. Pohshed section of the superior part of the specimen, showing the 

 endocyUnder and the ectosepta with a very small amount of 

 stereoplasmic deposit. 



7b. Cross section, showing the form and position of endoconch. 



Loc: — Near Sin-tan, Tze-kuei-hsien, W. Hupeh. (G.S.C. Cat. No. 2837) 



Fig. 8. V aginoceras uniforme Yii. Nat. size p. 42 



8a. Longitudinal section of a mature portion of a shell showing the 

 uniform ectoseptal distances and the rate of tapering. 



8b. Cross section, showing the form of the marginal endoconch. 



*Loc: — San-shan-yuan, Chung-yang-hsien, SE. Hupeh. (N. R. I. Cat. 



No. 14) 



Fig 9. V aginoceras uniforme Yii. Nat. size p. 42 



Longitudinal section of a fragment of the specimen, showing the 

 ectoseptal distances and the size of endoconch. 



Loc: — San-shan-yuan, Chung-yang-hsien, SE. Hupeh. (N. R. L Cat. 



No. 15) 



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