298 
Aug. F. Foerste 
Beatricea undulata, Billings. 
{Plate VIII, Fig. 3.) 
Erect columnar growths with longitudinal rounded ridges 
separated by broad shallow grooves. The ridges and grooves 
are not necessarily continuous along the entire length of the stem 
but neighboring ridges may gradually disappear or run together 
and be replaced by others farther up the same stem. There fre- 
quently is a slight spiral twist to these grooves, which occasionally 
becomes more pronounced. The specimens found in Kentucky 
and Indiana usually do not exceed 60 millimeters in diameter but 
larger specimens are found in Canada. 
Geological position. In the lower part of the southern extension 
of the Liberty bed, in Bullitt, Nelson, and Marion counties, Ken- 
tucky. The specimens figured were obtained at Bardstown, Ken- 
tucky. The most southern specimens were found 2 miles north- 
east of Liberty, in Casey county, associated with Columnaria 
vacua, F etradium minus, and Lahechia ohioensis, at the base of 
the Liberty bed. It occurs at the corresponding horizon north 
of Ophelia, 4 miles north of Richmond, in Madison county. 
In Indiana, good specimens have been found a short distance 
above the chief Columnaria layer, near the base of the Saluda 
bed, along the Hanging rock road, at Madison. 
In some specimens of Beatricea the longitudinal ridges are much 
less distinctly defined than in the specimen here figured. Some- 
times these ridges are rather indefinite in direction and irregular ! 
in elevation, becoming nearly obsolete on some parts of the body. 
A specimen of this type, 60 millimeters in diameter, was found in 
the upper part of the Liberty bed north of Canaan, Indiana. 
Much smaller specimens of the same general type occur 14 and 
29 feet below the Brassfield or Clinton bed, in the Elkhorn bed, j 
along Elkhorn creek, south of Richmond, Indiana. It is the | 
extreme forms of this variety, without any indication of ridges, | 
which here are figured as Beatricea undulata-cylindrica. I 
Beatricea undulata-cylindrica, var. nov. 
{Plate IX, Fig. 7.) 
In typical specimens of Beatricea undulata the vertical ridges j! 
and intervening grooves are at least sufficiently distinct to be 1 
