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SIE J. WILLIAM DAWSON ON THE 



Leptostrobus longifolivs (Fontaine.) (Fig. 8.) 



Fig. 8. — Leptostrobus longifolius. 



Many long narrow linear leaves, solitary or in clusters, with appearance of having 

 two nerves. Along with these are fragments of long lax cones with flabellate scales, 

 furrowed obscurely in a radiating manner. Heer established this genus for certain pine- 

 like plants with long two-nerved leaves and very elongated lax cones, from the so-called 

 Jurassic of Siberia. There seems to be no certain means of distinguishing the present 

 species from those described by Heer or from that named as above by Fontaine. As 

 Fontaine's specimens on the whole seem more to resemble ours, I have adopted his name. 

 The species is so plentiful that I anticipate before long the discovery of more perfect 

 specimens which may serve more fully to establish its specific relations. 



Pinus {Cydopitus) Nordenskioldii (Heer.) (Fig. 9.) 



Fig. 9. — Pinm ( Cydopitus) Nordennhioldii. 



Long narrow one-nerved leaves, much broader, however, than those of the last 

 species, are scattered very plentifully on the surfaces of shale from Anthracite. They are 

 mostly detached, having evidently been deciduous, but in some cases appear to be in 

 tufts, though this may be accidental. They are smooth and shining, and often more than 



