EXPLANATION OF PLATE II. 



Fig. 1. Orthis calligrcunma Dalman, var. intercalare Chang P. 14 



la Interior mold of the pedicle valve. Nat. size, 

 lb Same mold x 3. 



Loc: — Taihungshan, Nanchang Hsien, N. Hui^eh. 

 (G. S. C. Cat. No. 3377). 



Fig. 2. Orthis calligramrna Dalman, var. Intercalare Chang P. 14 



2a Interior mold of the brachial valve. Nat. size. 

 2b Same mold x 3. 



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

 (G. S. C. Cat. No. 3378). 



Fig. 3. Orthis calligramma Dalman, var. intercalare Chang P. 14 



3a Interior mold of another brachial valve x 2. 

 3b Same mold x 4. 



Loc: — Taihungshan, Nanchang Hsien, N. Hui^eh. 

 (G. S. C. Cat. No. 3380). 



Fig. 4. Oi'this calligramrna Dalman, var. intercalare Chang P. 14 



4a Interior mold of a third brachial valve. Nat. size. 

 4b Same mold x 3. 



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

 (G. S. C. Cat. No. 3379). 



Fig. 5. Orthis cf. unguis Sowcrby P. 15 



5a Interior mold of the pedicle valve x 2. 

 5b Same mold x 4. 



5c Exterior imi^'ession of the pedicle valve x 2. 

 5d Same impression x 4. 



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

 (G. S. C. Cat. Nos. 3381, 3382). 



(Ill) 26 



