PLATE X. 
Fig. 1 and 2. 
Page. 
Alethopteris hymenophylloides, Spec, nov./..898 
Fig. 8 and 4. 
Enlarged pinnules of fig. 2. 
Fig. 5. 
Alethopteris inflata, Spec, nov.'....393 
Fig. 6. 
Enlarged part of the same. 
Fig. 1 . 
Alethopteris Hallii, Spec, nov.394 
Fig. 8. 
Enlarged pinna of the same. 
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