PalcBozoic Fossils. 401 



DESCRIPTION OF PLATES. 



Plate VI. 



1. Lepidodendrun a/banense, n. sp. The illustration shows 

 the better preserved part of the surface. At A the surface has 

 been turned over, and a sketch is shown alongside of the appear- 

 ance of the leaf-bases from this direction. 



Cat. No. 150. Witteberg beds. Quarry south of Grahams- 

 town. 



2. Lejiidodendron Jfowiense, n. sp. 2a shows one of the vas- 

 cular protuberances enlarged. 



Cat. No. U;5. Witteberg beds, Cold Bokkeveld, Ceres. 



3. DidymojdiyUuni expansum, n. sp. 



Cat. No. 161. Witteberg quartzites, Steytlerville. 



3 a, b, c. The areoles and rootlets enlarged four times ; a, 

 surface view showing the two apertures ; b, the paired rootlets 

 seen from above ; c, the rootlet seen from the side. 



4. -Bothrodendroii irrcgulare. n. sp. 



Cat. No. 165. Estment's Farm, Kowie, Port Alfred. 



5. Buthrcdendion cacspitusum, n. sp. 

 Cat. No. 115. Cold Bokkeveld, Ceres. 

 5a, the same enlarged three times. 



Plate VII. 



1. Sjiinfer antaniicus, Morris and Sharpe. Outer surface 

 of brachial valve and hinge area. 



Cat. No. 131. Bokkeveld beds, Montagu. 



2. Spirifrr antarcticus, Morris and Shari)e. Diagrammatic 

 section through the cast. External surface shown in dotted lines 

 and cast of the beak in black. 



3. Spiri/er orbif/in/i. Morris and Sharpe. Natural internal 

 cast of the pedicle valve. 



Cat. No. 2128. Bokkeveld beds, Montagu. 



4. Sinrifer orbignyi, Morris and Sharpe. Natural cast of the 

 brachial valve. 



