DESCRIPTION OF TLATES. PP. 125 



Fig. 2, 3, 4, 5, Pinnse of the same, showing vari- 



ations in shape and distance of pinnules. 

 " 2". Enlarged pinnule of Fig. 2. 



" 6. Summit of pinna of the same plant. 



Plate X. 



Figs. 1-2. Odontopteris nervosa, Sp. nov. The specimen 

 shows the insertion of the pinnules. 



'« 2. Terminal portion of a pinna, of the same. 



" 3. Odontopteris densifolia, Spec. nov. 



" 8°. Pinnule of the same, showing nervation. 



" 4. Odontopteris obtusiloba, Naum. Variety, rari- 



nervis. 



" 4". Pinnule of the same, showing nervation. 



" 5-10. Odontopteris pachyderma. Spec. nov. 

 5. An entire pinna. 



" 6. The same. A portion of a pinna from lower 



down in the frond, showing crenulated 

 pinnules. 



" 7. A fragment of the same, showing the most 



common form of pinnules. 



" 7". Enlarged pinnule of the same. 



" 8. A fragment of the same, showing a portion 



of the upper part of the frond. 



" 9. A portion of the same, showing insertion 



of the pinna, and tlie auriculate pinnules 

 at their base. 



<><- 10. Basal portion of a large pinna of the same. 



" 10". Basal leaflet of the same, enlarged. 



" 11. Neuropteris, species not determined. Basal por- 

 tion of a large rachial leaflet. 



Plate XI. 



Figs. 1-4. Callipteris conferta, Brongt. The normal form. 

 <' 1". Enlarged pinnules of the same. 



" 2. Terminal portion of a pinna. 



" 3, Fragment from the upper part of a com- 



pound pinna. 



