PLATE X. 



TAGK. 

 Fig. 1 and 2. ALKTHOPTERIS IIYMKNOPHYLLOIDKS, Spec, nov /. 398 



Fig. 3 and 4. Enlarged pinnules of fig. 2. 



Fig. 5. ALKTHOPTERIS INFLATA, Spec, nov 393 



Fig. 6. Enlarged part of the same. 



Fig. 7. ALETHOPTERIS HALLII, Spec, nov 894 



Fig. 8. Enlarged pinna of the same. 



