The Fauna of the Maxville Limestone. 361 



generally rounding or convex. In a basal view the form is pen- 

 tangular, and viewed from above somewhat pentalobate; the 

 ambulacral areas being slightly sulcated. Basal plates small, 

 extending to rather less than half the height of the body below 

 the base of the areas, and in their lower half are somewhat more 

 attenuate than above, the cicatrix for the attachment of the 

 column being very small. Forked plates elongated, and the sinus 

 very broad and deep ; the length of the plates being equal to more 

 than once and a half their greatest width, and their summits 

 slightly truncated for the reception of the small pointed inter- 



FiG. 2. — Pentremites elegans. Lateral view. (After Whitfield.) 



ambulacral plates, which are in length about equal to one-fourth 

 of the entire length of the areas. Ambulacral areas propor- 

 tionally wide, distinctly depressed along their middle and com- 

 posed, in the specimen figured, of about twenty-six pairs of 

 transverse poral-plates, from ten to eleven of which occupy 

 the space of an eighth of an inch in length, in the lower and mid- 

 dle portions, but become shorter above. Summit openings rather 

 large, surface smooth [Whitfield, 1893]." 



Horizon and locality. — Maxville limestone. 

 Upper zone: Mouth of Buckeye Fork, Fultonham, 



CLASS CRINOIDEA. 



CYATHOCRINUS MAXVILLENSIS-Whitfield. 



1882. Cyathocrinns inequidactylus. Whitfield, Ann. N. Y. Acad. Sci., 

 Vol. II, p. 219, (Not C. inequidactylus McCoy, 1844). 

 Maxville limestone : Newtonville, Ohio. 

 1891. Cyathocrinus maxvillensis. Whitfield, Ann. N. Y, Acad. Sci., Vol, 

 V, p. 577, pi. 13, figs. 5-8. 

 Maxville limestone : Newtonville, Ohio. 



