DESCRIPTION OF SPECIES. eles 
strained to consider them distinct. The characters of the form and 
nervation exhibited by these leaves are well shown in the figures now 
given. 
Locality: South Amboy. 
Order ARALIACEA. 
HEDERA PRIMORDIALIS Sap. 
IIE SDS aes, il, OP IPI SOONG niece ee 
Hedera primordialis Saporta, Le Monde des Plantes, p. 200, fig. 29. 
Normal leaves kidney-shaped or cordate, with a deep sinus at the base, 
8™ to 15™ in diameter, long petioled, margins entire, sometimes waved; 
nervation radiate, from five to seven nerves springing from a common 
point at the base of the leaf, diverging toward the margin, branching 
above, inosculating and forming a network of large meshes which are 
filled with areoles of various sizes and dimensions. 
Leaves which I can not distinguish by any constant characters from 
Hedera primordialis of Saporta are rather common at Woodbridge. A 
number of figures on Pl. XX XVII are given to show the variation in form 
and for the purpose of identifying a characteristic plant of the forma- 
tion, and one which possesses the additional interest of being common to 
the Amboy Clays, the Atane beds of Greenland, and the Cenomanian of 
Bohemia. It will be seen that there is considerable diversity in the size 
and form of the leaves, but the predominant and normal character is shown 
by figs. 1, 2, 4, and 6 of Pl. XXXVII. 
Locality: Woodbridge. 
HeprERA opiiqua Newb. n. sp. 
Pl. XXXVIL, fig. 8; Pl. XX XVIII, fig. 5. 
Leaves large, 10™ to 15°™ in length and 8™ or 10% in width, unsym- 
metrical, elliptical in outline, margins somewhat waved; nervation radiate 
from the top of the petiole, which is an inch or more in length; that one 
of the nerve branches strongest which passes to the portion of the margin 
most remote from the base; the other branches, three or four in number, 
MON XXVI——8 
