This domicil

Thomas Say, American Entomology, or Description of the Insect of North America, tome II, Philadelphie, S.A. Michell, 1824-26.

Here it soon begins to fabricate a tubular, portable dwelling, which, as respects form, may be compared to that of the clothes-moth. This domicil consist of a silky matter, with various objects attached to the exterior, such as sand, gravel, small pieces of wood or reed, &c., so proportionned that its weight exceeds but litle that of the water. As the inhabitant increases in bulk, the tube at length becomes too small, and is necessarily abandonned. Another, of suitable dimensions, is, however, soon constructed, and the little animal is again in a state of security. This artisan, is of a cylindrical, somewhat elongated form, consisting of twelve joints or segments; on the fourth joint is generally a conic tubercle on each side, and on the ultimate segment are two moveable hooks.