A COAL-MEASURE FOREST 251 



in the rows. Length of bolster, 0.75-0.8 in.; width, 0.5 in. Cicatrix nearly 

 reaching middle of length of bolster: ligule very large, often causing the upper part 

 of cicatrix to appear emarginate. Transpiratory appendages large, oval, discrete. 

 A groove extends from cicatrix to the lower angle of the bolster, and there are 

 traces of frets. State of preservation imperfect. Named in honor of Dr. Charles 

 R. Keyes, of the New Mexico School of Mines. 



Lepidodendron, sp. ?. (Fig. 9.) 

 (Bulletin of the University oj New Mexico, Vol. II, Plate VII, Fig. 3.) 



In form of bolsters this form is like L. hrittsi or L. aculeatum. 



All our specimens seem to be decorticated, so that it seems unsafe 

 to attempt a description. It is even possible that these specimens 

 belong to one of the above species, although in appearance they 

 differ widely. 



There are five bolsters in a space of 3.7 in., measured diagonally in the rows. 

 Length of bolster, 1.6 in.; width, 0.4 in. Vascular scar above the middle. Sur- 

 face of (decorticated) specimen striolate. 



C. L. Herrick. 



Socorro. N. M. 



