PLATE XI. 



Lepidostrohus amhiguus, Binney. 



Fig. 1 (No. 27). The lower portion of a Cone, from the trappean ash of Laggan 

 Bay, in the Isle of Arran. Natural size. 



Fig. \a. A portion of the Stem, and the base of the Cone. Magnified 5 

 diameters. 



Fig, 15. The upper part of the specimen. Magnified 5 diameters. 



Lepidostrohus Wuenschinnus, Binney. 



Fig. 2 (No. 28). A Cone, from the trap-ash, Laggan Bay. Natural size. 



Fig. 2a. The upper portion of the Cone, showing the Column, Scales, and Sporangia. 

 Magnified 5 diameters. 



Fig. 25. Part of the lower portion of the Cone, showing the Column, Bracts, and 

 Sporangia, with Macrospores. Magnified 5 diameters. 



Fig. 2c. A Scale, from the upper part, with a Sporangium, full of Microspores. 

 Magnified 10 diameters. 



Lepidostrohus latus, Binney. 



Fig. 3 (No. 29). A Cone, from the trap-ash, Laggan Bay. Natural size. 

 Fig. "da. The upper portion of the Cone. Magnified 5 diameters. 

 Fig. 35. The lower portion of the Cone. Magnified 5 diameters. 

 Fig. 3c. A Sporangium, from the higher part of the Cone, containing Microspores. 

 Magnified 10 diameters. 



