OKDOVICIAN AND SILURIAN BRACHIOPODA OF THE GIRVAN DISTRICT. 997 



Pi-ate XXIV 



Fig. 1. Rltynchotrtma shallochense (Dav.). Complete shell, brachial valve. x 2. Whitehouse Group, 

 Shalloch Mill. G. (Figured, Davidson, Suppl, pi. x, fig. 19.) 



Fig. 2. Ditto, ditto. Pedicle-valve. x 2. Same horizon and locality. G. 



Fig. 3. Rhynchotremal gircanense (Dav.). Brachial valve. x 2. Balclatchie Group (conglom.), 

 Balclatchie. G. (Figured, Davidson, Suppl., pi. x, fig. 26.) 



Fig. 4. Ditto, ditto. x 2. Same horizon and locality. G. 



Fig. 5. Ditto. Pedicle-valve. x 2. Same horizon and locality. G. 



Fig. 6. Ditto, var. Brachial valve. Same horizon and locality. G. (Marked as figured, Davidson, 

 Suppl, pi. x, fig. 30, Rhynch. nucula var. ?) 



Fig. 7. Rhynchotrema sp. Pedicle- valve, internal cast. x lj. Balclatchie Group (conglom.), 

 Balclatchie. G. 



Fig. 8. Rlujnchotreta urdutillancnsis (Dav. MS.). Internal cast of pedicle-valve, x 2. Balclatchie 

 Group, Ardmillan. G. 



Fig. 9. Ditto. Internal cast of brachial valve. x 2. Same horizon and locality. G. 



Fig. 10. Ditto, ditto. x 2. Same horizon and locality. G. 



Fig. 11. Ditto. Internal cast of pedicle-valve. x 3. Same horizon and locality. G. ♦ 



Fig. 12. Ditto. Internal cast of brachial valve. x 2. Same horizon and locality. G. 



Fig. 13. Ditto, ditto, x 2. Same horizon and locality. G. 



Fig. 13«. Ditto, ditto. Side-view of same specimen. x 2. 



Fig. 14. Ditto. Same brachial valve, from squeeze of external impression. x 2. G. 



Fig. 15. Ditto. Internal cast of brachial valve. x 2. Same horizon and locality. G. 



Fig. 16. Ditto. Outline side-view of complete shell. x 2. Same horizon, Dow Hill. G. 



Fig. 17. Ditto, var. Complete shell, brachial side. x H-. Stinchar Limestone Group, Craighead. 

 G. (Figured, Davidson, Suj>pl., pi. x, fig. 9, as Rhynch. cuneata.) 



Fig. 18 Rlujnchotreta cuneata (Dalm.), var. Internal cast of brachial valve, x 1-|. Mulloch Hill 

 Group, Mulloch Hill high road. G. 



Fig. 19. Camarotaicliia llandovei-iana (Da.v.),\&v. nov. diversiplicata. Brachial valve. xl|. Camregan 

 Group, Camregan Wood. G. 



Same horizon and locality. G. 

 Same horizon and locality. G. 

 Same horizon and locality. G. 



Fig. 23. Camarotaechia sp. Internal cast of brachial valve, x 2. Camregan Group, Camregan Wood. G. 



Fig. 24. Zy/ospira orbis, sp. nov. Complete shell, pedicle side. x 2. Stinchar Limestone Group, 

 Craighead. G. 



Fig. 24a. Ditto. Same specimen, brachial side. x 2. 



Fig. 2ib. Ditto. Same specimen, outline side-view. x 2. 



Fig. 25. Ditto. Complete shell, .brachial side. x 2. Same horizon and locality. G. 



Fig. 26. Ditto? Internal cast of brachial valve. x 2. Balclatchie Group, Ardmillan. G. 



Fig. 27. Ditto? ditto. x 3. Same horizon and locality. G. 



Fig. 28. Zygospiral sp. Internal cast of pedicle- valve. x 2. Starfish Bed, Drummuck Group, 

 Thraive Glen. G. 



Fig. 29. Ditto. Same pedicle-valve (from squeeze of external impression). x 2. G. 

 £ Fig. 30. Protuzyga carrickensis, sp. nov. Complete shell, brachial side. x \\. Stinchar Limestone 

 Group, Craighead. G. 



Fig. 30rt. Ditto. Same specimen, pedicle side, x 1£. 



Fig. 30/>. Ditto. Same specimen, anterior view. x 1£. 



Fig. 30c. Ditto. Same specimen, outline side-view. xl|. 



Fig. 31. Ditto. Complete shell, brachial side. x 1^. Same horizon and locality. G. 



Fig. 32. Olintonelhi cf. vagabunda (Hall and Clarke). Internal cast of brachial valve. x 5. Saugh 

 Hill Group, Newlands. G. 



Fig. 



20. 



Ditto. 



Pedicle- valve. 



xH. 



Fig. 



21. 



Ditto. 



Brachial valve. 



xl£. 



Fig. 



22. 



Ditto. 



Pedicle-valve. 



xli. 



