344 A PROPOSED CLASSIFICATION OF THE GENUS HELIX. 
or without clear brown bands; spire very much elevated; labrum 
very slightly reflected, except at base, where it is widely reflected; 
this pretty banded shell is an imported English species. It is found 
below Quebec. 
2. Lip simple. 
Sus-Sec. B.—Shells small, less than + inch in diameter. 
1. Lip reflected. 
2. Lip simple. 
H. cuersina (Say).—Whorls about 6, wrinkles not distinct ; 
shell sub-globose, conic ; pale yellowish white, pellucid ; body whorl 
slightly carinated above the middle; breadth about 2, inch. Lower 
Canada. 
H. ecena (Say).—Whorls 5, not distinctly wrinkled, rounded ; 
shell polished, aperture rather narrow, transverse; labrum at its in- 
ferior (lower) extremity, terminating at the centre of the base of the 
shell; umbilical region deeply indented; breadth over 4, inch; it is 
broader than chersina, and much more elevated, and not so broad as 
arborea; the aperture is also of a different shape. Lower Canada. 
Section B.—Shells umbilicated. 
Sus-Sec. A.—Shells large, umbilicus exhibiting all the whorls. 
1. LInp reflected. 
H. concava (Say).—Whorls 5, irregularly wrinkled across; shell 
horn color or whitish, depressed ; aperture large and short; labrum 
towards the base very slightly and inconspicuously reflected ; greatest 
width +, inch. Canada. 
2. Lip simple. 
H. attrernata (Say).—Whorls 5, striated across, with raised equi- 
distant acute lines, forming grooves between them; shell reddish 
brown, varied or alternating with pale rays ; aperture thin and brittle ; 
breadth 2 inch. Canada. 
Mr. Tytler, B.A., has a specimen of this shell in his possession, 
found at Weston, the dark rays of which are a deep black. 
H. perspectiva (Say).—Specimens from the States are nearly 
3 inch in diameter. Our Canadian species do not appear to be quite 
+ inch in diameter—see Sub-Sec. B. 
Sus-Sec. B.—Shells small, umbilicus exhibiting all the whorls. 
1. Lip reflected. 
H. minvuta (Say).—Ohio, &c. 
