(90) 
ent. We have supposed its relationship to be with Sterculza 
Suowid not only because the latter already has a remarkable 
bilobate form (var. dzsjuncta), but also because we can readily 
imagine a leaf like the leaf of S. Sxowz? shown on FI. Dak. 
Group, pl. 33. f. 3 with a deeper sinus which would then 
make it correspond with our specimen. 
This reference is far from satisfactory ; it would seem that 
if this is a variety of S. Sxzowz7 the latter ought to be present 
as well or at least in the Raritan, although it has not as yet 
been discovered, except a doubtful specimen from Tottenville, 
Staten Island (Hollick, Ann. N. Y. Acad. Sci. 11: 422. 
pl. 37. f. 4. 1898). Although Lesquereux in his Report 
on the Clay Deposits of New Jersey (1878) recognized un- 
determined species of Stercudia at three different localities, 
no decisive remains of this genus have thus far come to light 
in the Raritan formation in New Jersey. Dr. Hollick, to 
whom a sketch of this leaf was sent, is disposed to compare 
it with Fl. Dak. Group, p/. 27. f. 5, which Lesquereux 
refers to Heer’s Cussztes formosus. Inasmuch as Lesquer- 
eux’s determination is doubtful, because the secondary system 
is quite unlike that of Czsscfes in looping along the margins 
and more like that of Sterculia, I prefer to consider it more 
nearly related to the latter, at least provisionally. It may also 
be compared with £ 3 of Aralia concreta Lesq., as figured 
by him in Cret. & Tert. Fl. A/. 9. Sterculia Limbata Velen., 
the Bohemian representative of S. Snow7?, has sometimes 
4-lobed, 4-veined leaves. 
STERCULIA MUCRONATA Lesq. Fi. 43. fi 3. 
Sterculia mucronata Lesq. Fl. Dak. Group, 182. pl. 30. 
SJ. I-4. 1892. 
In the absence of the apical and basal portions, and be- 
cause of the obliteration of the venation, it is with consider- 
able hesitation that I refer this small bilobed leaf to the above 
Dakota Group species. That it is referable to Stercudza is I 
think probable, but just which species to associate it with is 
doubtful. It is about the same size as Lesquereux’s smaller 
