W.D. Funkhouser, Arts and Sciences, As taught in the World’s greatest, University, Lexington, 1947, p. 36.

The caddis-fly (Phryganea striata) is an excellent mason. It builds it home under water of grains of sand and small stones fastened together with a waterproof cement. Generally theses houses are tubular and shape and very regular in outline but certain species of so-called « mason caddis-worm » fasten large stones on the outside of the tube. Some species which build tubes entirely of sand make spiral houses which in shape very closely resemble snail shells. Some caddis-flies make houses of small pebbles held together with silk. Incidentally the caddis-fly is not only a mason but a fisherman as well.