A PROPOSED CLASSIFICATION OF THE GENUS HELIX. 347 
2. Lip simple. 
H. wineata (Say).—Whorls about 4, with numerous regular revolv- 
ing lines; shell much depressed, somewhat discoidal ; aperture longer 
than wide; umbilicus very large. As the shell is somewhat translu- 
cent, two pairs of white teeth, remote from each other, may be ob- 
served through the body whorl. One pair of these teeth is placed in 
the throat, and can be readily seen by looking im at the aperture; 
these teeth are nearly equidistant from each other, and from the ex- 
tremities of the labrum. The other pair is placed too far in to be 
seen from the aperture ; diameter 2, inch. Lower Canada. 
Sus-Sec. C.—Shells large, umbilicus not exhibiting all the whorls. 
1. Lip reflected. . 
H. rayroipus (Say).—Whorls 5, wrinkled ; shell rather thin, pale 
reddish brown; labrum widely reflected, white; labium with an ob- 
lique white tooth, not very prominent; umbilicus narrow, distinct ; 
breadth 4 to ,inch. Resembles Aléolabris but is always umbilicated, 
smaller and toothed. Garafraxa, and Walkerton, Co. Bruce. 
H. rripentaTa (Say).—Whorls 5, crossed by numerous lines, 
separated by regular grooves; shell depressed, brownish or horn 
color ; teeth placed triangularly, one on the labium; labrum widely 
reflected, white, furnished with two teeth; umbilicus moderate ; 
breadth } inch. Canada. 
2. Lip simple. 
Sus-Sec. D.—Shells small, umbilicus not exhibiting all the whorls. 
1. Lip reflected. 
H. TripENTATA (Say).—About 4 inch in breadth. See Sub-Sec. 
C. above. 
H. LaByrintuica (Say).—Whorls 5 or 6, with conspicuous ele- 
vated lines across, forming grooves between them; shell dark reddish 
brown, body whorl lighter; labrum rounded; labium with a large 
lamelliform elongated tooth which appears to revolve within the shell, 
a smaller raised line revolves nearer the base but becomes obsolete 
before it arrives at the labium; umbilicus rather large; breadth 51, 
inch. Lower Canada. 
H. monopon (Rackett).—Whorls 5 or 6, diminishing very gradu- 
ally in breadth from the outer whorl to apex, marked with fine lines 
of growth ; epidermis russet or chestnut color, with very minute hair- 
like projections ; aperture contracted by a deep groove behind the lip ; 
