6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 82 



and because of the difference in age I venture the opinion that this 

 is a different and perhaps an ancestral species. 



The resemblance of these leaves to those of the modern genus 

 Greioia of the Tiliaceae has led some paleobotanists to think their 

 affinities may lie in that direction. I have, therefore, questioned the 

 generic reference to Popxdus. 



Holotype.—U.S.'NM. No. 39141. 



PROTEACEAE 

 DRYANDROroES LANCEOLATA Knowlton 



Plate 1, FiGtrKE 6 



Dryandroides lanceolata Knowlton, U. S. Geol. Surv. Prof. Paper lOS, p. 89, 

 pi. 34, fig. 7, 1917. 



This lanceolate coriaceous coarsely toothed leaf, although some- 

 what smaller, has the characters of that described by Knowlton from 

 the Frontier formation. It is comparable to the leaves of some 

 modern species of such proteaceous genera as Dryandra and Banksia. 

 However, in the absence of more certain evidence than foliar char- 

 acters, no definite commitment other than that already suggested by 

 Knowlton can be made as to generic af!init5^ 



Pledotype.—IJ.S.'^M. No. 39142. 



LAURACEAE 

 LATJRUS ASPENSIS, new species 



Plate 2, Figure 1 



This specimen is a short stem bearing one nearly entire leaf, a por- 

 tion of another leaf, and the petiole of a third. There are no buds 

 or leaf scars on the stem. The large leaf is 8 cm long and 2.5 cm 

 wide, and is oblanceolate in form, the nature of the apex being 

 unknown, but the base is cuneate to a petiole 1.5 cm long. Margin 

 entire. The venation is pinnate from a strong midrib, and is com- 

 posed of 12 or more subopposite pairs of secondaries, which emerge 

 from the midrib at 50°, run out fairly straight to within a short dis- 

 tance of the margin, and then curve upward sharply and become lost 

 near the margin beneath the curve of the secondary above. The 

 tertiary venation is a system of irregular parallel diagonals con- 

 necting the secondaries. 



It would seem that the affinities of this specimen are with the 

 Lauraceae or Magnoliaceae. I have compared the specimen with 

 all the available similar material in the United States National 

 Museum, but find no exact reliable correspondence for definite iden- 



