72 THE FLORA OF THE AMBOY CLAYS. 
base, margin entire; nervation fine, lower nerves forming an acute angle 
with the midrib, upper ones more obtuse. 
I have not seen another specimen exactly comparable to this, either in 
our collection or in any from other localities, and it is with some hesitation 
that I have placed it in the above genus. 
No locality is given, and no indication appears as to Dr. Newberry’s 
ideas in regard to its probable botanical relations.—A. H. 
PROTEOIDES DAPHNOGENOIDES Heer. 
P]. XVII, figs. 8, 9; Pl. XXXII, figs. 11, 13, 14; Pl. XX XIII, fig. 3; Pl) XU, fig. 15. 
Proteoides daphnogenoides Heer, Phyllites Crétacées du Nebraska, Nouv. Mém. Soe. 
Helv. Sci. Nat., Vol. X XII, No. 1, 1867, p. 17, Pl. IV, figs. 9, 10. 
Leaves lanceolate, 15°" to 25™ long by 2° to 3°" wide, more or less 
abruptly narrowed to the base, gradually tapering upward to a long, acute, 
generally flexuous point; margins entire, surface smooth; medial nerve well 
marked toward base and thread-like at summit, lateral nerves slender, leav- 
ing the midrib at an acute angle, connected in a flowing festoon near the 
border; tertiary nerves forming many rounded or subquadrate areoles. 
The leaves represented by the figures now given and many other 
specimens in our collections seem to be identical with those described by 
Heer in his Phyllites Crétacées du Nebraska (p. 17, Pl. IV, figs. 9, 10) and 
figured and described more in detail by Mr. Lesquereux in his Cretaceous 
Flora, p. 85, Pl. XV, figs. 1,2. Such leaves are not at all uncommon in the 
Dakota group of the interior of the continent, and while the finer details 
of nervation are generally wanting, so far as observable they correspond 
to what we find in a rather common group of leaves in the Amboy Clays. 
The figures now given will serve for a comparison with those published by 
Heer and the still better ones given by Mr. Lesquereux. These leaves 
afford another point of identity between the flora of the Amboy Clays and 
that of the Dakota group at the West, still further strengthening the conclu- 
sion drawn from the other identical species that the geological level of the 
two formations is nearly the same. 
Localities: Woodbridge, Sayreville, ete. 
