PLATE VIII. 



Fig. Page. 



1. Kokenospira rnullochensis, sp. nov. Internal cast. Side view. X l^- 



Mulloch Hill Group, Mnllocli Hill. Mrs. Gray's Coll. 38. 



la. Front view. X 1^. 



2. Ditto. Ornament. X 6. Same horizon, locality and collection. 38. 



3. Kol-cnosjyira nicholsoni, sp. nov. Internal cast. Side view. X 2. 



Stincliar Limestone, Craighead. Mrs. Gray's Coll. 39. 



3 a. Dorsal view. X 2. 3^. Inferior view. 



4. Kolcenospira snhdecnssata (McCoy). Dorsal view of squeeze from 



original specimen, x 4. Denbighshire Flags, Llanrwst. Sedgwick 

 Mus. (a/612). 40. 



5. Tetranota carrickensis, sp. nov. Dorsal view of crushed specimen with 



shell preserved. X 2^. Balclatchie Group, Ardmillan. Mrs. 



Gray's Colh 41. 



6. Ditto. Ditto. X 4. Same horizon, locality and collection. 41. 



7. Ditto. Sinus view. X 2^. Same horizon, locality and collection. 41. 



8. Ditto. Ditto. X 2^. Same horizon, locality and collection. 41. 



9. Ditto. Internal cast. Dorsal view. X 2. Same horizon, locality and 



collection. 41. 



9a. Front view, x 2. 9b. Side view. X 2. 



10. Ditto. Internal cast of young shell. Dorsal view. X 3. Balclatchie 



Conglomerate. Mrs. Gray's Coll. 41. 



11. Ditto. Outline restoration of front view. 41. 



12. Tetranota carrickensis var. craigeusis, nov. Internal cast. Dorsal view. 



X 21. Stinchar Limestone, Craighead. Mrs. Gray's Coll. 42. 



12a. Side view. X 2^. 



13. Ditto. Internal cast. Dorsal view. X 2|. Same horizon, locality 



and collection. 42. 



14. Tetranota carrickensis var. efJieridgei, nov. Side view, x 2. Drummuck 



Group, Thraive Glen. Mrs. Gray's Coll. 42. 



14a. Sinus view. X 2, 14/;. Inferior view, x 2. 14-c. Ornament, x 10. 



15. Ditto? Internal cast of old shell. Dorsal view. X 1^. Drummuck 



Group, Thraive Glen. Roy. Scottish Mus. (No. 593). 42. 



15a. Front view. X 1^. 156. Side view. X 1^. 



16. Tetranota hiirpopus (Salter). Sinus view of one of Salter's original 



specimens. X 1-|^. Arenig Series, Ritton Castle. Mus. Pract. 

 Geol. [28009]. 43. 



