22 
BULLETIN OF THE LABORATORIES 
cular in outline, its margin oblique; outer lip having a broad notch a 
little above the middle; inner lip thickened. Our specimens indicate 
a species at least a third smaller than White’s types. 
EuomplialiiS sp ? 
(Plate II, Figs. 4, 5, and Plate V, Fig 5.) 
A small species is represented by impressions and fragments of 
the dorsal and umbilical side. About three whorls are preserved, meas- 
uring .42 in diameter. The dorsal or upper surface seems to be 
marked by a sharp carina along the outer margin and to have been or- 
namented with strong lines of growth. The umbilical surface is less 
perfectly preserved, but had a series of sharp prominences along the 
inner margin and semi-carinate ridges elsewhere. Since writing the 
above more perfect and larger specimens have been found. This spe- 
cies is also found in the flinty limestone at the top of Flint Ridge. 
The existence of prominences along the inside of the umbilical whorls is 
a constant character, and the revolving lines seem less so. The 
sharp external carina of the opposite or upper side is also a character 
identical with E. rugosus, but this species differs constantly in the 
presence of the prominences on the umbilical edge of the whorl. 
Genus Loxonema. 
(Plate III, Fig. 2.) 
A fine species of this genus is known from a single crushed speci- 
men which is represented (partly restored) in our figure. The shell 
is 2.20 or more in length, the ' diameter of the largest whorl being 
about. 75. The spire is elevated and has an apical angle of 15°. 
The number of volutions can not be less than ten (the terminal ones 
are absent in the specimen. ) The volutions are convex and are marked 
by strong, somewhat oblique plications, about seven in half an inch on 
the largest volution. The characters of the lip, aperture and colum- 
ella can not be made out, though there is some evidence of a projec- 
tion of the lip downward at the lower angle of the aperture. The 
shell accords in most points which can be made out with L. plicatum, 
Whitfield, but, as there are in the neighborhood of twenty described 
