HELIX. SNAIL-SHELL. 
69 
aperture roundish oval; the outer-lip rather strong; inner- 
lip reflected and forming a slight groove behind it : length 
half an inch; breadth a quarter. 
Ponds and stagnant waters, v. v. 
62. Helix iutea. Yellow Snail-shell. 
Montagu, pi. 16. f. 6 . 
Shell somewhat oval, semitransparent, strong, smooth, 
dull orange-yellow, obtuse at the point: spires three, the 
first very large: aperture oval, very wide ; the outer-lip 
rather thick; inner-lip a little thickened, but not reflected 
or forming a hollow. It much resembles H. succinea, but 
is less, not so tumid, thicker and stronger, and an inhabi¬ 
tant of the ocean: length nearly half an inch ; breadth al¬ 
most a quarter. 
Sea coasts of South Devon, v. v. 
63. Helix glutinosa. Glutinous Snail-shell. 
Montagu, pi. 16. f. 5. 
Shell nearly orbicular, transparent, extremely thin and 
brittle, and finely glossed, smooth or very faintly wrinkled, 
1 often covered with a glutinous skin : spires three, the body- 
' one vastly large, occupying almost the whole of the shell, 
so as nearly to conceal the rest when it is lying with its 
mouth upwards: aperture oval, extremely large, reaching 
almost to the very tip; the inner-lip not reflected nor 
forming any kind of cavity: length more than half an inch 3 
breadth three eighths. 
In quite still waters, v. v. 
. 61. Helix lsevigata. Ventricose Snail-shell. 
Pennant, pi. 89. f. 8 — Donovan , pi. 105— Dorset Cat. 
pi. IS. f. 9. 
Shell nearly orbicular, very thin and brittle, transparent, 
very obtuse, faintly hut regularly striate longitudinally, 
often covered with a brownish wrinkled skin, under which 
it is pale flesh-color: spires four, the first very large and 
ride, the others minute, obtuse, and placed nearly flat on 
the larger volution; inside light purplish-brown or whitish : 
aperture nearly orbicular, vastly extended; the margin 
thin, not reflected at the pillar nor forming,a cavity: length 
half an inch or more; breadth something less. 
Variety , 
