125 



Cliffs on the right bank of the Potomac in Westmoreland 

 County, \'irginia. It is the purpose of the present note to de- 

 scribe these two occurrences. 



Pinus collinsi n. sp. Figure 2 



Although the pine cone is too incompletely preserved to be 

 gi\'en a distincti\e diagnosis it is probably a new species, since. 



Fig. 1. Prunus calvertensis, Berry, n.sp. 

 Fig. 2. Pinus collinsi, Berry, n.sp. 



with the exception of the seed of a Pinus to be mentioned pres- 

 ently, it is the only trace of Pinus known from eastern North 

 America in the interval between the Eocene and the Pleistocene. 

 The specimen clearly belongs in the genus Pinus and since it 

 seems preferable to give it a specific name it is named for the 

 collector, R. Lee Collins. 



The specimen, which is incomplete at the base, is 8 centi- 

 meters long and about 3 centimeters in diameter. The scales are 

 thin ; somewhat, but not greatly thickened and umbonatedistad, 

 unarmed, about a centimeter in width and 2 centimeters or 



