46 
BULLETIN OF THE LABORATORIES 
the freestone of the middle Waverly is thus named because of the con- 
ical spire resembling a fool’s cap. 
Since writing the above a number of specimens imbeded in the 
freestone near the top of division II have been collected. These 
specimens seem to prove that our species is a trochoid shell and not a 
Pleurotomaria. No evidence of a peripheral revolving band or of a 
notched outer lip can be observed, while the strictly conical spire and 
angulated lower margin of the body whorl and what can be seen of the 
lip suggest Fleminf^ia. The spire is often higher than in the specimen 
drawn and the outer surface of the volutions somewhat convex, but 
never in either respect equalling Flemingia turbinato-conica of Dekon- 
inck. It may be compared with F. coniformis, Dek. There are usu- 
ally four whorls which are marked in the casts only by the impressed 
lines of growth. The aperture is not well preserved but seems to be 
lenticular. The umbilical surface of the lower whorl forms nearly a 
right angle with the spire. 
Height of spire in largest specimen, 13 mm., diameter of largest 
volution, about 12 mm. Other specimens are only 4 mm. high, and 
equally broad. 
PLEUROTOMRIA TEXTILIGERA, Meek. 
(Pal. O., Vol. II, p. 314.) 
This pretty species is quite common at Bagdad, and occurs also 
at Lodi on a slightly lower horizon. It has not been found in the 
central or southern part of the state. 
PLATYCERAS LODIENSE, Meek. 
(Plate XI. Fig. 2^ Plate VIII, Figs, i and 7.) 
We have specimens from Bagdad which may represent this spe- 
cies if Meek’s description was prepared from a young or imperfect 
specimen. Much variation is permitted within species of this genus. 
The following added particulars are noted : 
The shell though never spirally coiled may be considerably arched 
and restricted at the tip or it may be nearly straight above the poster- 
ior margin of the aperature. The carina of the anterior surface (in 
the cast) does not reach the aperture in large specimens but termi- 
nates by a triangular attenuation. Near the aperture the sides are 
