New Species of Fossil Plants. 427 



eral ones linear arched. In its corticated state, the whole 

 surface is narrowly undulate striate, the striae diverging only 

 above the vascular scars which are oval i the two exterior 

 ones, in the length, the central one crosswise. 



76. Sigillaria Schimperi (spec. nov.). Surface undulate, 

 narrowly plaited and striate crosswise. Scars one inch dis- 

 tant, large, striate in the same direction as the intervals, nearly 

 round in outline ; the upper marginal line well marked, 

 half circular, and extending horizontally on both sides ; the 

 inferior one slightly marked, half circular. Vascular scars 

 two, oval, placed below an arched, linear depression. 



77. Sigillaria stellata (spec. nov.). Surface deeply 

 marked with undulate, branching wrinkles, diverging in every 

 direction from the smooth scars around them. Scars nearly 

 plane, regularly hexagonal, the upper side only obtusely 

 emarginate. Vascular scars three ; the medial one semilu- 

 nar, the lateral ones oval-pointed downwards and diverging 

 to the sides. 



78. Sigillaria polita (spec. nov.). Stem ribbed, ribs 

 nearly plane, very smooth, as broad as the distance between 

 the scars ; furrows narrow, deep, and straight ; scars discoid, 

 enlarged both sides, round above, the lower margin convex, 

 with two lateral angles very obtuse. Vascular scars three ; 

 the medial one transversal linear, straight in the middle and 

 convex at both ends ; the lateral ones linear, arched. 



79. Sigillaria dubia (spec. nov.). Like Sigillaria Cortei 

 Brongt ; differs by the greater distance of the scars, which 

 are broader at the base, and by the ribs being more deeply 

 striate. 



80. Sigillaria obovata (spec. nov.). Stem ribbed ; ribs 

 more than one inch broad, nearly flat, obsoletely striate ; fur- 

 rows deep and narrow ; scars obovate, with the inferior margin 

 very obtuse. Vascular scars three ; the medial one linear, 

 short, the lateral ones slightly arched. 



81. Sigillaria discoidea (spec. nov.). Stems furrowed; 

 furrows distant, irregular, deeply marked, and wrinkled ; dis- 



