KILMARNOCK, GALSTON, AND KILWINNING COAL FIELDS, AYRSHIRE. 359 



EXPLANATION OF PLATES. 

 Plate I. 



Fig. 1. Sphenopteris obtusiloba, Brongt. Grange Colliery, Kilmarnock. Horizon — Stranger Seam. Nat. 

 size (Registration No. 1560). la, Pinnules x 4 to show nervation. 



Fig. 2. Neuropteris crenulata, Brongt. Woodhill Quarry, Kilmaurs. Hot. — Shale over roof of Durroch 

 Coal. Nat. size. 2a, Portion of pinnule x 4 to show serratures and nervation. 



Fig. 3. Neuropteris Blissii, Lesqx. Bonny ton Pit, Kilmarnock. Hoi: — Shale over Whistler Seam. Nat. 

 size (Reg. No. 1558). 3a, Pinnule x 3 to show nervation. 



Plate II. 



Fig. 4. Annularia galioides, L. and H., sp. No. 3 Pit, Springhill, Crosshouse. Hor. — Shale over Major 

 Coal. Nat. size (Reg. No. 1559). 4a, A few of the leaflets x 3. 



Fig. 5. Calamitina (Calamites) approximator, Brongt., sp. Woodhill Quarry, Kilmaurs. Hor. — Ahove 

 Durroch Coal. Nat. size (Reg. No. 1551). At a is seen the position of a whorl of branches ; at b the thick- 

 ness of the surrounding vascular (?) sheath. 



Fig. 6. Calamitina {Calamites) approximata, Brongt., sp. Stevenston, Ayrshire. Hor. — Roof of " f " Coal. 

 Nat. size (Reg. No. 1552). 



Fig. 7. Lepidostrobus (?) spinosus, Kidston. Bonnyton Pit, Kilmarnock. Hor. — Shale over Whistler 

 Seam. Nat. size (Reg. No. 1548). 



Fig. 8. Cordaites principalis, Germar, sp. Monckton Main Colliery, near Barnsley, Yorkshire. Hor. — 

 Barnsley Thick Coal, Middle Coal Measures. Specimen showing upper portion of leaf with split apex. Nat. 

 size. W. Hemingway, collector. (Reg. No. 1478). 8a, Nervation x 8. 



Plate III. 



Fig. 9. Lepidodendron Landsburgii, Kidston. Portion of specimen from Bonnyton Fit, Kilmarnock. 

 Hor. — Whistler Seam. About \ nat. size (Reg. No. 1545). 9a, Portion of bark showing leaf -cushions and 

 ornamentation. Enlarged. 



Fig. 10. Lepidodendron Landsburgii, Kidston. Bonnyton Pit, Kilmarnock. Hor. — Shale over Whistler 

 Seam. Nat. size (Reg. No. 1546). Portion of specimen showing one of the large discs. 10a, Portion of bark 

 enlarged. 106, Leaf -cushion x 2. a, Cushion ; b, leaf -scar ; c, cauda ; d, keel. Vascular cicatrice not 

 shown on specimen. 



Fig. 11. Lepidostrobus (?) spinosus, Kidston. Bonnyton Pit, Kilmarnock. Hor. — Shale over Whistler 

 Seam. Nat. size (Reg. No. 712). The specimen is photographed with the light falling on it at right angles to 

 the axis, to show the striated appearance produced by the adpressed bracts. 



Fig. 12. Lepidostrobus (?) spinosus, Kidston. The same specimen as fig. 11, but photographed with the 

 light falling on it parallel to the axis, to show the transversely rhomboidal extremities of the sporangia. Nat. 

 size. 



Plate IV. 



Fig. 13. Lepidostrobus squarrosus, Kidston. Bonnyton Pit, Kilmarnock. Hor. — Shale over Whistler 

 Seam. Nat. size (Reg. No. 1550). 13a, Sporangium and bract enlarged. 



Fig. 14. Lepidostrobus squarrosus, Kidston. Bract from another specimen on the same slab as last. Enlarged. 



Fig. 15. Stachannularia (?) Northumbriana, Kidston. Bonnyton Pit, Kilmarnock. Hor. — Whistler Seam. 

 Nat. size (Reg. No. 1553). 15a, Verticil of bracts x 2. 



Fig. 16. Cordaites principalis, Germar, sp. Monckton Main Colliery, near Barnsley, Yorkshire. Hor. — 

 Thick Coal, Middle Coal Measures. Nat. size (Reg. No. 1479). Base of a leaf showing at a the cicatrices of 

 the vascular bundles. W. Hemingway, collector. 



Fig. 17. Cordaites principalis, Germar, sp. Bonnyton Pit, Kilmarnock. Hor. — Shale over Whistler Seam. 

 Nat. size (Reg. No. 1561). Stem showing striated outer surface and tbe leaf-scars. 



Fig. 18. Calamitina (Calamitis) verticillatus, L. and H, sp. No. 3 Pit, Springhill, Crosshouse. Hor. — 

 Shale over Major Coal. Nat. size (Reg. No. 1557). The specimen shows a verticil of quadrate cone (? or 

 branch) scars. 



VOL. XXXVII. PART II. (NO. 16). 3 F 



