GEOLOGICAL SUEVEY OF THE TERKITOEIES. 373 



Spheria lapidea, sp. nov, 



Perithecia round, highly convex, 1 to 2 millim. broad, growing in lineal 

 series from under tlie bark and piercing it before opening; borjlers 

 irregularly lacerated ; color whitish. 



This species is upon a petrified fragment of wood, part of which is 

 still corticated, on another ijart the bark has been destroyed. The 

 borders of the opened perithecia are somewhat inflated. ' A single one 

 is still entire or unopened, comparable by its form and size to the living 

 Verrucaria niticla, Ach. 



Chondrites subsimplex, sp. iiov. 



Frond cylindrical, flattened by compression, 5 mill, wide, with rare 

 dichotomous, long, flexuous branches, mostly of the same size, some, 

 however, reduced in size to one-half from the point of division from the 

 main stem. 



This species is found mostly flattened or expanded upon large slabs 

 not passing across layers of sandstone. Upon some of these slabs 

 the filaments appear sim^jle, resembling Halimenites lumhricoides, Heer, 

 (Urwelt der Schweitz.) The surface is irregularly roughened and 

 generally marked in the middle by a depression indicating the fistulose 

 character of the plant. 



Chondrites bulbosus, sp. nov. 



Frond plain, irregularly subpinnately divided in opposite or alternate 

 branches, close to each other, or distant, short, inflated like irregular 

 tubercles. 



The branches vary in thickness from two to five mill,, generally five 

 to eight mill, long, often bilobed at the obtase point ; they are, like 

 the main stem, inordinately inflated and nari'owed. 



Haltmenites striatus, sp. nov. 



Frond cylindrical or compressed, erect, one foot long or more, dicho- 

 tomous; branches short. 



The ramification of this species is variable, the divisions being more 

 or less open, sometimes at a right angle from an inflation of the main 

 axis. The surface appears generally smooth ; where the coating of stone 

 is rubbed out, it appears coarsely ribbed as by a linear series of tuber- 

 culeiform sporanges. The branches perforate the sandstone in every 

 direction. It is related to Fucoides ci/lindricus, Sternb. Common 

 at the Eaton ; found also at Golden by Professor Meek. 



Halyjiejstites major, sp. nov. 



Frond of the same thickness and mode of division as the former ; 

 surface marked by round contiguous or disjointed tubercles 2 to 5 mill, 

 broad and as thick. 



It has the same general, appearance as the former. Its branches are 

 sometimes longer and smaller. The stems are 2 cent broad. 



Haltjmenites minor, F. 0. 



Branches half as thick as in the former species, 8 mill, broad, marked 

 with small tubercles. 



