THE DEVONIAN FOSSILS OF CANADA WEST. 359 
The surface is marked with large slightly elevated lines of growth 
four or five in one line which on the upper side of the whorl curve 
backwards to the outer margin, and, then crossing the marginal edge 
curve forward for half the depth of the whorl on the outside, then 
backwards to the edge of the umbilicus within which they are not 
preserved in any specimen that I have seen. The aperture has the 
upper outer and inner sides nearly straight and at right angles to each 
other. The lower side is narrowly convex at the outer angle and then 
concave conforming to the curve of the umbilicus. In a nearly 
perfect specimen three inches across, the upper-side of the last whorl 
is full an inch wide at the aperture and the outer-side an inch and a 
half: 
In general the spire is flat or gently concave but in some of the 
casts ‘the two inner whorls are a little elevated above the plane of the 
outer one. 
This fine species is closely allied to Huomphalus trigonalis.—(Gold- 
fuss) of the Devonian rocks of Germany, but it is flatter above, and, 
according to Goldfuss’ figures, the surface of that species is finely 
cancellated. 
Dedicated to the discoverer Mr. J. De Cew, of Cayuga, C. W. 
Locality and Formation.—County of Haldinand, Corniferous 
Limestone. 
Collector.—J. De Cew. 
STRAPAROLLUS? CanapEnsis.—(N. Sp.) 
Description.—This species consists of a simple, cylindrical, slender, 
gradually tapering tube, coiled up so as to make a nearly flat disc 
about two inches and a half across. A transverse section of the tube 
is very nearly circular, which must also be the form of the aperture. 
The spire is nearly flat or gently concave. The umbilicus is widely 
but not very deeply concave. There are about four whorls. In 
specimens two inches and a half wide the diameter of the aperture is 
from seven to nine lines. The surface markings are not preserved in 
the specimens that I have seen. In one there are several concave 
transverse septa and it may be that this is a Cephalopod of the genus 
Trochoceras and not a Gasteropod. As however species of Strapa- 
rollus are occasionally septate I shall place it in that genus provisionally. 
Thus species is closely allied to Euomphalus planorbis, (Archiac and 
Verneuil) of the Devonian Rocks of Germany but has fewer whorls. 
