EXPLANATION OF PLATE II.— (Continued) 



Fig. 6.^ Orthis cf. calligramma Dalman, var. subplicata Eeecl P. 15 



6a Interior mold of the pedicle valve. Nat. size. 

 6b Same mold x 2. 



6c Interior mold of another pedicle valve. Nat. size. 

 6d Same mold x 2. 



Loc: — Taihungshan, Nanchang Hsien, N. Hupeh. 

 (G. S. C. Cat. Nos. 3383, 3384). 



Fig. 7. Plectorthis sp. 1 P. 16 



7a Exterior impression cf the pedicle valve. Nat. size. 

 7b Gutta Percha mold of same valve. 

 7c = 7a X 2. 

 7d = 7b X 2. 



Loc: — Taihungshan, Nanchang Hsien, N. Hupeh. 

 (G. S. C. Cat. Nos. 3385a, 3385b). 



Fig. 8. Plectorthis sp. 2 P. 17 



8a Exterior impression of the pedicle valve x 2. 

 8b Gutta percha mold of same valve x 2. 

 8c = 8a X 4. 

 8d = 8b X 4. 



Loc: — Taihungshan, Nanchang Hsien, N. Hupeh. 

 (G. S. C. Cat. Nos. 3386a, 3386b). 



Fig. 9. Dalmanella cf. elegantula Dalman P. 17 



9a Exterior impression of the pedicle valve. Nat. size. 

 9b Gutta percha mold of same valve. 

 9c = 9a X 3. 

 9d = 9b X 3. 



Loc:— Taihungshan, Nanchang Hsien, N. Hupeh. 

 (G. S. C. Cat. Nos. 3387a, 3387b). 



(ill) 27 



