FOSSIL PLANTS. 459 



CAULOPTERIS INTERMEDIA, Sp. nov. 



CICATRICES elliptical, elongated, three inches long, a little 

 more than one inch broad, narrowed downwards into a broad 

 cauda, pointed at the top, irregularly ribbed or sulcate, with a 

 central, elongated scar, and without definite marginal disc. 

 Surface between the cicatrices apparently smooth, marked by 

 points or mammillae about one-eighth of an inch broad, half 

 an inch distant, placed in an irregular spiral order. The 

 space between the cicatrices is horizontally one and a-half 

 inches, and two inches in the direction of the spiral. 



This species is known to me only by a sketch lately communicated by the 

 State Geologist, and received after the preparation of the descriptive part of 

 this Report, and the engraving of the plates. It appears to be intermediate 

 between Sigillaria Marodiscus, Brgt., and Sigillaria Oistii, of the same author. 

 The form of the cicatrices is about the same size as in the first of these species, 

 but they are disconnected at the base, placed in true spiral order, and at some 

 distance from each other, as in the last species. It is a true Caulopteris, ac- 

 cording to Schimper's definition of the genus, while most of our species of 

 Caulopteris, viz., those whose internal cicatrices are surrounded by a flattened 

 border generally opening inwards in the form of a horse shoe, are referable to 

 the genus Stemmatopteris, of Corda. 



In sandstone, over coal No. 3, one mile south of Rushville, 111. 



