2 1 2 Bulletin of Laboratories of Denison University. [Voi. xi. 
spire conical moderately elevated, consisting of five volutions ; 
volutions convex, strongly lobed by the transverse grooves, 
about 1 6 of which are found on the second volution of a full- 
sized specimen; body volution nearly thrice the length of the 
spire ; aperture long and rather narrow ; columella, as far as 
seen, unmarked by folds ; surface of body volution marked by 
strong transverse plicae which are strong near the upper aspect 
but increase by intercallation below so that they are there about 
of the same size as the revolving striae with which they produce 
a beautiful cancellated appearance. Near the upper (sutural) 
margin is a strong groove which separates a part of the whorl 
as a prominent band which continues to the spire. The upper 
volutions are more strongly lobed and on them the revolving 
striae are obsolescent. Shell thick ; cast smooth. The species 
is more robust than any species of Volutomorpha known to us 
but the absence of the columella folds seems to prevent its ref- 
erence to Volutiderma, or Voluta. Length about 3.5 inches. 
Sigaretus textilis^ Stanton. 
Several specimens with about the size and form of this 
species and with the cancellated surface have been taken from 
the gasteropod zone east of San Francisco. The spire in some 
cases is proportionally larger than shown by Stanton but the 
individuals vary among themselves. 
Harp a (?) occidentalism sp. n. 
Plate XXVIII, Fig. 4. 
This beautiful shell cannot be definitely referred to any 
Cretaceous genus but seems to belong in the Harpidae. Body 
whorl enlarged ; spire low, conical ; aperture elongate, rather 
narrow, notched and curved below ; inner lip smooth, covered 
with a callus ; outer lip thickened. The surface is marked by 
broad, flattened, transverse ribs separated by narrower depres- 
sions with a square cross-section. The lower part of the body 
whorl has about five revolving grooves like those separating the 
transverse ribs. There is a shallow revolving groove near the 
suture. Length about three fourths of an inch. The figure is 
