It attaches itself to the sprigs of shrubs, and, like the caddis worms, protects itself by a habitation from which it can protrude the anterior part of its body, being attached internally to its case by the tail, and by that means can feed and change its locality at pleasure, bearing its case with it, and re-attaching itself to any other place that may suit its habits; thus I have had them moving about in my room, attaching themselves to one place, and then removing to another; at first much to my surprise at their power of mobility, until I saw it was effected by the protrusion of the larva from its habitation. The case is composed internally of a very tough web, and the exterior is covered by bits of twigs interwoven upon it in a perpendicular direction; it suspends itself from the twig by a strong cluster of filaments. I have found this larva enclosed in its case of various sizes from three to six inches; this has led me to conclude that, like the caddis worms, they increase in size in the larva state, enlarging their habitations as the former ones become too small for the increased size of their bodies. I found, by cutting one of the cases open, that they readily repair any injury their dwellings may have sustained, for a few hours only having elapsed after I had made the incision to view the contained larva, I found the case restored as firmly as before. In company with my friend, Mr. Lauga, I visited the colonial museum, which is arranged for the present in a small room, assigned for the purpose, in the council-house, and which had been recently established at Sydney: it forms an excellent nucleus for a splendid collection, particularly in a country so prolific in rare, valuable, and beautiful specimens of natural productions. For the present, the ornithological collection is by far the best, both for the number, and being beautifully stuffed and “set up” in attitudes, from which it is evident that nature has been closely studied. Specimens of the families Columbæ, Psittaceæ,[30] Raptores, &c. are the most numerous. There are also several of the mammalia, and reptiles of the colony in the collection.