992 



DR F. R. C. REED ON THE 



Plate XX. 



Fig. 1. Schuchertella perfinax, sp. nov. Interior of brachial valve. x 1£. Saugh Hill Group, Wood- 

 land Point. G. 



Fig. 2. Ditto. Pedicle-valve. Nat. size. Same horizon and locality. G. 



Fig. 2a. Ditto. Left half of same specimen. x 2. 



Fig. 3. Ditto. Interior of pedicle-valve. x li. Same horizon and locality. G. 



Fig. 4. Triplecia craigensis, sp. nov. Complete shell, brachial side. x 2. Stinchar Limestone 

 Group, Minuntion. G. (Figured, Davidson, Suppl., pi. xi, fig. 23, as Rhynch. balclatchiensis.) 



Fig. 4a. Ditto. Anterior view of same shell. x 2. 



Fig. 5. Ditto. Complete shell, brachial side. x 2. Same horizon and locality. [12968.] M.P.G. 



Fig. 6. Triplecial nucleoirfes, sp. nov. Complete shell, brachial side. x 1£. Stinchar Limestone 

 Group, Craighead. G. 



Fig. 6a. Ditto. Posterior view of same specimen. 



Fig. 6b. Ditto. Anterior view of same specimen. 





Fig 



Fig 

 Point. G. 



Fig. 9. Ditto, ditto. Nat. size, 

 fig. 16, as Pentamerus undatus.) 



Fig. 10. Ditto, ditto. Nat. size. Same horizon and locality. 



Fig. 10a. Ditto. Posterior view of same specimen. Nat. size. 



Fig. 11. Ditto. Brachial valve. Nat. size. Same horizon and locality. G. 



Fig. 12. Ditto. Complete shell, pedicle side. Nat. size. Same horizon and locality. G. 



Fig. 13. Ditto. Complete shell, side-view. Nat. size.. Same horizon and locality. G. 



Fig. 14. Ditto? Complete young shell, pedicle side. Nat. size. Same horizon and locality 



Fig. 15. Ditto. Internal cast of brachial valve. Nat. size. Same horizon and locality. G. 

 Outline side-view of complete shell (restored). 



internal cast 



Ditto. Side-view of a brachial valve. x 2J. Same horizon and locality. G. 



Triplecia ivoodlandensis, sp. nov. Pedicle-valve. Nat. size. Saugh Hill Group, Woodland 



Same horizon and locality. G. (Figured, Davidson, Suppl., pi. ix, 



G. 



Fig. 16. Dit 



Fig. 17. Mimulusl incertus, Dav. Pedicle- valve, 

 G. (Figured, Davidson, Suppl., pi. viii, fig. 28.) 



Fig. 18. Ditto, ditto. x li. Same horizon and locality. G. 



Pedicle-valve. x li. Same horizon and locality. G. 

 Side-view of umbonal portion of pedicle-valve. 



xlf. 



Penkill Group, Penkill. 



Fig. 



19. 



Ditto. 



Fig. 



20. 



Ditto. 



locality. 



G. 





Fig. 



21. 



Ditto. 



Fig. 



22. 



Ditto. 



x li Same horizon and 



Complete shell from brachial side x li. Same horizon and locality. G. 



Internal cast of pedicle-valve. x 1L Same horizon and locality. [4170.] M.P.G, 



Fig. 23. Ditto. Posterior view of internal cast of pedicle- valve. xl|. Same horizon, Penwhapplc 

 Glen. G. 



Fig. 24. Sireptis Hornei, sp. nov. Pedicle-valve. x 3. Saugh Hill Group, Woodland Point. G. 



Fig. 24a. Ditto. Portion of surface of same specimen, x 6. 



Fig. 25. Ditto. Brachial valve. x 3. Same horizon and locality. 



Fig. 26. Cliftonia Grayse (Dav.). Complete shell, pedicle side. x 2. Stinchar Limestone Group, 

 Craighead. G. (Figured, Davidson, Suppl., pi. viii, fig. 32.) 



Fig. 26a. Ditto. Same specimen, brachial side. x 2. 



Fig. 26b. Ditto. Portion of surface of same specimen. x 6. 



Fig. 27. Ditto. Complete shell, pedicle side, x lj. Same horizon and locality. G. 



Fig. 27a. Ditto. Same specimen, brachial side. x 1|. 



Fig. 27?;. Ditto, ditto. Anterior view. x 1£. 



Fig. 27c. Ditto, ditto. Side-view. x 1J. 



