126 R. P. Whitfield— Carboniferous air-breathing Mollusk. 
and propose the name Anthracopupa, with the following char- 
acters, ‘ 
ANTHRACOPUPA, new genus. 
Shell minute, pupaform, with few volutions, the last one 
unsymmetrical ; axis imperforate ; aperture large, nearly verti- 
eal; peristome thickened, united above by a thin callus on 
which may occur one or more palatal teeth; other tooth-like 
projections occur on the inner margin of the lip, and a small, 
nearly circular notch, resembling that in Pugna, deeply 
indents the inner edge of the outer limb near its junction with 
the body whorl. Surface of the shell marked by fine, nearly 
vertical lines. Type A. Ohzoensis. 
ANTHRACOPUPA OHIOENSIS, nD. Sp. 
Shell small and robust, having a length of about three and 
one-third mm. with a transverse diameter of about two mm. 
and consisting of about four volutions, the last one extremely 
ventricose except on the outer half, where it is obliquely 
flattened and contracted, and, with the aperture, forms about 
three-fourths of the entire length of the shell. Aperture large, 
longer than wide, and broadly rounded at the base; hi 
| 
/ 
Anthracopupa Ohioensis Whitf. 
_ Fig. 1, view of the aperture ; 2, lateral view to show the thickened lip; 3, back 
bind showing lip and strie; 4, aperture more enlarged. Figs. 1-3 enlarged 
es, 
thickened, rounded within and forming a flattened, thickened 
rim on the outside, particularly on the lower part. Labial 
notch situated very near the upper extremity of the lip, regu 
lar in shape, and forming nearly two-thirds of a circle. 
single tooth-like ridge of moderate size extends inward from 
the lip at about the middle of the columellar side, and another 
of greater size projects nearly vertically from the middle of the 
Formation and locality—In the higher beds of the Coal- 
measures, near Marietta, Ohio. 
