| From a smoother central part it projects a ragged sheet. | Color may be white or cream, often with rosy rays; interior like white china. | The lips are thin and glossy white. | Color whitish lavender, often with purplish rays. | Aperture circular, with a thin and sharp outer lip. | Color bluish white with two red or purple blotches. |
| These lines have been likened to a series of steep walled tents. | Color dull white, sometimes tinged with greenish. | Color ranges from deep pink to pinkish white. | Small aperture pear shaped; outer lip thin and sharp. | Color dull chalky gray with the aperture showing tinges of iridescence. | The inner lip bears a single pleat. |
| Color green and surface quite shiny. | Lips heart-shaped, sometimes gaping a little at one end. | A handsome snow-white color; pleasingly formed. | The interior is like white china, with a rosy tinge around the edges. | Color yellowish white; aperture pearly. | Color purplish black, vertically flecked with white. |
| When this peals off it is often pinkish red. | Slender and elongate and often reddish in hue. | Color dull grayish; interior white. | Surface smooth and shining; color shiny tan. | Color yellowish green; the interior silvery white. | Lips rather thin and fragile, and often translucent. |
| Interior bluish, tinged with yellow. | The aperture is half-moon shaped, and the distinguishing character is a lengthened groove, or chink. | Color pale chocolate, often speckled with whitish. | Aperture small and oval; outer lip thin and sharp and wavy. | Aperture very large and nearly circular; color pinkish white. | Color varies from pale pink to purplish red. |
| Shiny and nearly black; interior bluish white. | Colors range from clear lemon yellow to watery egg white. | Interior colored with a tint of exterior color. | Liquids hooded and opulent; a shade of a lamp that is clouded. | Curiously plicated, curved inward and shy. | Deep within the outer lip are several elevated white revolving ridges that do not reach the edge of the lip. |
| Color deep purplish brown, with occasional paler rays. | Interior white, tinted with pinkish. | Lips but little inflated, not very much curved. | Inner surface silvery, with tints of pink and green. | Aperture oval and narrow; inner lip smooth, white, and slightly arched. | Color white; surface glossy. |
| Irregularly circular, it has a waxy luster. | The surface may be smooth and glossy or dull and chalklike. | Thin, egg-shaped; posterior tip bent. | Thin, fragile; flaring aperture velvety pinkish white. | Color grayish green, with blotches of black and bright green. | Lips form a sort of shield, which when empty and turned over suggests a small boat. |
| Thick and solid; its soft parts are commonly bright-colored. | The lips are winged, eared, swollen. | Triangular in shape, futile and translucent. | Interior may be bluish or pinkish. | Large, rounded; gash in inner lip; yellowish white. | Elongate and graceful, with just a slight bend to the right. |
| Interior pearly, and features very minute scars like pinpricks. | Inflated and golden as a thin bubble of spit. | Thick and solid; posterior sloping; grayish purple. | Rugged; white or pinkish white; rosy-pink aperture. | Dull with nothing knotted with drab. | Aperture teardrop shape, bordered by a thickened lip. |
| Lips about central and rather prominent, with one of them perforated by friction with the other. | Interior silvery, with green and pink reflections. | Outer rim projects over the pearly interior and forms a red edge. | Color ashy pink, with distinct brownish or reddish rays. | Surface rough, mottled gray and black with a bluish owl-shaped patch at the center. | Small, well polished; rosy red. |