ART. 22 RICHMOND FAUNAL ZONES AUSTIN 15 



County, Ohio. Since all the strata exposed in this short tributary 

 belong to the upper part of the Liberty, the specimen was undoubt- 

 edly derived from that horizon. We know of no other specimen of 

 the species having been found in this territory. This type is now 

 in Wilmington College together with the rest of the Welch collection. 



Canisti'ocHjius richardsoni (Wetherby) : The type of this species 

 was discovered by Mr. J. M. Richardson in the crinoid bed (W. 17) 

 at the top of the Waynesville on Cowan's Creek, Clinton County. 

 Ohio, from which were taken the numerous specimens of Licheno- 

 crinus affinis which established the fact that Lichenocnnus is not a 

 cystid but a true crinoid. Although Mr. Richardson found a con- 

 siderable number of C. richardsoni at this locality with their bodies 

 well preserved, very few good specimens have been found elsewhere. 

 One peculiarity of this species was the unusual length of its large 

 column. One may occasionally find continuous sections five to six 

 feet long lying partly imbedded on the surface of a limestone layer ; 

 the length of the entire column must have been much greater than 

 this. As far as we know, its range is restricted to this bed. 



Catazyga headi schuchertana (Ulrich) : This species comes in a 

 foot or two below the top of the Clarksville in the lower Hebertella 

 insculpta bed. It appears to have been gregarious in its habits, de- 

 veloping widely separated colonies with onlj'^ an occasional individual 

 between. There is such a populous colony exposed in Mill Run, a little 

 tributary of Todd's Fork just north of Clarksville, Ohio, and another 

 at Blanchester, Ohio, in a little stream that enters into Second Creek. 

 At other localities where its horizon is exposed, it is only on rare 

 occasions that a specimen is to be found. This species appears to be 

 confined in the region to the very limited range named above, not 

 being found at any other horizon in the Richmond. 



C ompsocrinus ^niamiensis (Miller) : From Jonahs Run near Har- 

 veysburg, and from Roaring Run near Wellman, both localities in 

 Warren County, Ohio, we have collected this species from the crinoid 

 bed (W. 17) at the top of the Waynesville. Whether its range 

 extends beyond this horizon we can not say, but we have no knowl- 

 edge of its occurrence elsewhere. 



Dendrocrinus caduceus (Hall) : The type of this species was found 

 in Longstreth Branch at Oregonia, Warren County, Ohio, appar- 

 ently in the crinoid bed (W. 17) at the top of the Waynesville. We 

 have no knowledge of its occurrence east of the Little Miami River, 

 nor do we know the extent of its vertical range. 



Dendrocrinus casei (Meek) : This species also appears to have 

 made its first entrance into the Richmond at the crinoid bed (W. 17) 

 at the top of the Waynesville. At one locality near Clarksville, 

 Ohio, it was collected from this bed, where it was associated with 

 Beteocrmus nealli and Megdlograptus melchi. The species extends 



