498. Lesquereux's Descriptions of 
tance between them from two to three inches, flattened, irre- 
gularly dotted. Scars elevated, half globular, diminishing in 
size, slightly emarginate below, close to each other, marked 
in the middle by a deep, irregular point. 
Genus LEPIDODENDRON. Sternb. 
è 
82. LEPIDODENDRON MODULATUM (spec. nov.). Scars oval, 
narrowed and acuminate at both ends, curved at the base, 
separated by a margin one eighth of an inch broad, half round, 
elevated, and deeply wrinkled ; wrinkles undulate and par- 
allel to the scars. Vascular scars rhomboidal, obtuse, arched 
above, narrowed below in a long point, acute at both sides, 
marked with three transversal points, united by a depressed 
line; tubercles narrow, medial line deeply transversely fur- 
rowed ; appendages double. 
83. LEPIDODENDRON GIGANTEUM (spec. nov.). General 
scars oval-trapezoid, elongated-acute at both ends. Vascular 
scars placed nearly in the middle, rhomboidal-quadrangular, 
transversely marked with three points ; appendages irregular, 
longer on one side, tubercles very small,.oval ; medial line 
marked in the whole length of the general scars, smooth. 
84. LepipopENDRON vksTITUM (spec. nov.). General scars 
oval-trapezoid, acute at both ends, separated by an irregular, 
elevated smooth margin, covering the borders of the scars ; 
vascular scars quadrangular, trapezoid, placed at the summit 
of the general scars; three-pointed in the middle, appendages 
none ; tubercles large, oval, diverging ; medial line deep and 
smooth. 
85. LrePrpopENDRON conicum (spec. nov.). General "e 
oval, acute and narrowed at both ends; vascular scars trian- 
gular, conical, with a single oval point in the middle and m 
broad oval tubercles below ; appendages none; medial line 
marked only by a row of undulate wrinkles, margins flat, on? 
eighth of an inch broad, very wrinkled. dd 
= 86. Lepmopenpron ocuLATUM (spec. nov.). Rena 
