232 SYSTEMATIC PALEONTOLOGY 
Feuilles Foss. Toscane, vol. i, pl. v, figs. 4-6 and vi, figs. 1-3, ete.) and 
Lesquereux, from the United States (Tert. FI. pl. xxv, figs. 4, 5; Cret. 
and Tert. Fl., pl. xlix, fig. 1). The latter author also described and fig- 
ured what is apparently this species under the name Acer equidentatum 
sp. nov. (Mem. Mus. Comp. Zool. Harvard College, vol. vi, No. 2, p. 26, 
pl. vii, figs 4, 5) which, however, is not the same species as that figured 
under the name in his Tertiary Flora, pl. xlviii, figs. 1, 3. Gceppert’s fig- 
ures |. c. and also his figures of P. wynhausiana (1. c. pl. x, figs. 1-4) ap- 
parently all represent one species, identical with that from Maryland. It 
may be questioned whether figures 2-5 on Plate LX XIV should beincluded 
with the others. They appear to represent leaves in which the margins 
were entire or very coarsely dentate, as in P. mexicana Moric., but there 
is not enough upon which to base a description. Figure 5, last quoted, 
apparently represents a portion of a basilar lobe, such as may often be 
seen in P. occidentalis and similar to the appendages of P. basilobata 
Ward (Synop. Fl. Laramie Gr. 6th Ann. Rept. U. S. Geol. Survey, pls. 
xlii, xliii). No such lobe or appendage is indicated in any of the figures 
of P. aceroides or its nearest allies, and this might perhaps constitute a 
distinctive feature which would be regarded as specific. 
Occurrence.—SuNDERLAND Formation. Near the headwaters of Is- 
land Creek, Calvert County. 
Collections.—Maryland Geological Survey. 
PLATANUS sp. ? 
Plate LXXV. 
Description. ee is apparently a portion of a very large Platanus 
leaf. It was approximately 12 inches in width and 8 or 9 inches in 
length. 
_ Occurrence. —SUNDERLAND Formation, Point: of Rocks, Calvert 
