EXPLANATION OF PLATE. 
Figs. Nos. 1, 2, 3, 4, 5.—Spores of Plants from the base of 
Lower Limestone Shales, Drybrook, Forest of Dean, x 262 
diameters. 
Figs. Nos. 6, 7.Spores of Plants from the Black Shales of 
Ohio, United States, x 262 diameters. 
Fig. No. 8.—“ A large Spore of Tasmanites punctatus, which has 
been ruptured, x 50 diameters; shows double contour 
and dotted surface.” Copied from Mr E. T. Newron’s 
paper, Geol. Mag. 1875, Plate X, Fig. 2. 
Fig. No. 9.—“ Portion of T. punctatus, Australian White Coal 
x 250 diameters, to show the dots and extremely fine 
granulation of the intermediate portion of the surface.” 
Copied from Mr E. T. Newron’s paper, Geol. Mag. 1875, 
Plate X, Fig. 9. 
