It is bell-shaped, becoming broadly open like a trumpet, and of a slate or ash color.
The color of this insect is a mixture of ash color and white.
In Germany it is called asche, from its gray or ash color in the water.
Nest and Eggs—Nest a crude affair on the ground, containing four eggs of an ash color, mottled with a dead brown.
Its water is always turbid, being of a muddy, ash color, though more so at its periodical rise than at other times.
In time the red-colored mass assumed an ash color, when it was collected on a filter and dried.