bd 370 | Binney's Monograph of the Helices 
where it was discovered by Mr. Nuttall during his 
late expedition. : 
Remarks. This beautiful species is unlike any 
other North American Helix, being much more 
brilliant in its coloring, and striking in its markings, 
than is common to them. The upper surface, in 
those specimens which ave come under my ob- 
servation, is either light yellow, strongly contrasted 
with a single a band, revolving on the ' middle of 
the body-whorl and on the lower edge of the other 
whorls, or a light chestnut with a black band.» The 
lower surface or band is of a uniform dark chestnut 
color. On some individuals there is a faint tracing 
of intermediate bands, and it’ is probable that when 
the shell becomes more common, it may be found 
that there is considerable diversity of coloring and 
marking. The lip varies from ashy-white to rufous. 
The revolving band is generally obsolete on the four 
whorls nearest the apex. The spire rises in à sub- 
Conical form to the apex, each whorl gradually and 
regularly diminishing from the body-whorl upwards. 
The whorls are convex; the stris of growth regular 
and fine, and very delicate: Crowded. impressed 
lines revolve upon the whorls. The lip is distinctly 
reflected at the base of the shell, but the reflection 
diminishes towards its upper part, and becomes eñ- 
tirely obsolete before it; joins the body-whorl. The 
umbilicus is of inconsiderable diameter but deep, and 
is. somewhat encroached. upon by the reflection of 
the lip. l 
- The name is a compliment to its discoverer. 
( 
