Anonyme, Insects and their Habitations, Londres, John W. Parker, 1834, p.67-68.
Archives du mot-clé ballast
The inner wall of the case
James L. Drummond, Letters to a Young Naturalist on the Study of Nature and Natural Theology, Londres, Longman, 1832, p. 37-38.
If you are desirous
W. Kirby & W. Spence, An introduction to Entomology or Elements of the NaturaL History of Insects, vol. 1, Londres, Longman, Hurst, Rees, Orme & Brown, 1818, p. 470-472.