156 MR ROBERT KIDSTON ON THE FRUCTIFICATION OF FERNS, ETC. 



1 mile west of Dunbar (J. Bennie). Dumfriesshire. — Docken Beck, 3 miles 

 south of Langholm (A. Macconochie). 



England — Northumberland. — River Tweed, 100 yards below Norham 

 Castle; River Tweed, south of Horncliffe Village; Horncliffe Dean, near mill 

 south of Horncliffe Village ; River Coquet, \ mile north-north-east of 

 Holystone ; Coomsdon Burn, ^ mile south-west from its junction with the 

 River Rede ; Hawk Burn, near Catcleugh, Reclesdale ; Spithope Bum, 

 Redesdale ; Crawley Dean (east of road), ^ mile south of Powburn, near 

 Ingram. Cumberland. — Bull Cleugh, Kirk Beck, Bewcastle. 



I am indebted, to Dr A. Geikie, F.R.S., for permission to figure and describe 

 the various specimens, mentioned in this communication, belonging to the 

 Geological Surveys of England and Scotland. 



EXPLANATION OF PLATE VIIT. 



Figs, l-6a. Calymmatotlieca bifida, L. & H., sp. 

 Fig. 1. From Biver Irthing, near Lampert. 



Fig. 2. From Lewis Burn, near Lewis Burn Colliery, N. Tynedale, Northumberland. 

 Fig. 3. From Back Burn, opposite Cranecleuch New Houses, N. Tynedale. 

 Fig. 4. From Bateiughope Burn, Eedesdale. 

 Fig. 5. Synangium, lettered a on fig. 4 ; enlarged. 

 Fig. 6«.From Lewis Burn, near Lewis Burn Colliery, Northumberland. 

 Fig. 6b. Sorodadus antecedens, Kidston. 



Fig. 7. Neuro-pteris heteropliylla, Brongt. From Blairpoint, Dysart, Fife. 

 Figs. 8-10. Zeilleria Avoldensis, Stur, sp. From Coseley, near Dudley. 

 Figs. 9-10. Pinnules ; enlarged. 

 Figs. 11-15. Alcicornopteris convoluta, Kidston. 



Fig. 11. From Horncliffe Dean, River Tweed, Northumberland. 

 Fig. 12. From Norham Castle, Northumberland. 

 Fig. 13. From Cove Shore, east of Cove Harbour, Berwickshire. 

 Fig. 14. From Long Craigs Bay, near Dunbar, Haddingtonshire. 

 Fig. 15. From River Tweed, near Norham Castle, Northumberland. 



EXPLANATION OF PLATE IX. 



Figs. 16-17. Calymmatotlieca bifida, L. & H., sp. 



Fig. 16. From Burdiehouse, near Edinburgh. Specimen in the "Hugh Miller Collection," 



Museum of Science and Art, Edinburgh (natural size). 

 Fig. Vlabc. Three Pinnules, enlarged. 

 Fig. 18. Calymmatotlieca afifinis, L. & H., sp. From Burdiehouse, Mid-Lothian. 

 Fig. 19. Calymmatotlieca afflnis, L. & H., sp. From Harwood Burn, below Limefield House, 

 near West Calder. In the Collection of the Geological Survey of Scotland (fig. 19a, 

 enlarged ; 19b, natural size). 

 Fig. 20. Calymmatotlieca affinis, L. & H., sp. From West Calder, Mid-Lothian. Collected by 



the late Mr C. W. Peach. 

 Figs. 21, 22. Calymmatotlieca affinis, L. & H. Copied from Peach, Quart. Jour. Geol. Soc, vol. 

 xxxiv. pi. viii. figs, la (= 21) and 3-3fl (= 22a, b). 



