The rocky streams

Rev. Richard Taylor Te Ika a Maui or New Zealand and Its Inhabitants,  Londres, William Macintosh, 1870, p. 636.

The rocky streams have  a little ancyclus and amongst other caddis worms, one kind of Phryganea, which inhabits a dentalia-shap horny cases, which might almost be termedas  shell, and another which forms its case of agglutinated particles of sand in the form of  a trochus, and it was a question with Mr. Swainson, whether it was a caddis worm or not.