160 
HELIX? Cimformis. 
TAB. CLXXI. —Fig. 2. 
Spec. Char. Conical, acute, umbilicate, decus- 
sato-striated ; with a band around the middle 
of the whorl crossed with arched striae ; aper- 
ture nearly round. 
A small space upon the upper part of each whorl is 
flattened, the remainder is very round, bearing upon the 
middle of it a broad band, strongly marked with lunate 
striae ; the decussating striae upon the other parts are 
small, and most distinct above the band. The rounded 
volutions which touch each other only in a small part of 
their surface, the aperture being nearly round, and rather 
wider than long, together with the conical form of the 
spire, give this a great resemblance to Cirrus acutus, tab. 
141 ; but the umbilicus does not appear large enough to 
authorize our placing it under the . same Genus ; I there- 
fore leave it for the present along with a shell to which 
it has as great an affinity. 
I received this along with the last from Mr. Martin ; 
it is from the same Limestone ; there is within it part of 
an Encrinus. 
