 | Henry Walter Bates - 1863 - 452 páginas
...is of a dull slaty colour and belongs to the Lithosiide group of the silk-worm family (Bombycidae). When the caterpillar begins its work, it lets itself...intervals, connecting them at the same time by means of cross threads ; so that the whole, when finished, forms a loose web, with quadrangular meshes of nearly... | |
 | Henry Walter Bates - 1880 - 176 páginas
...is of a dull slaty color, and belongs to the Lithosiide groupe of the silk-worm family (Bombycidœ). When the caterpillar begins its work, it lets itself...intervals, connecting them at the same time, by means of cross-threads ; so that the whule, when finished, forms a loose web, with quadrangular meshes of nearly... | |
 | Henry Walter Bates - 1880 - 162 páginas
...siJk-worm family (Bombyckbe). When the caterpillar begins its work, it lets itself down from tlie lip of the leaf which it has chosen, by spinning a thread...proper length to the cord. it proceeds to weave its rtogant bag, placing itself in the centre and spinning rings of silk at regular intervals, connecting... | |
 | Henry Walter Bates - 1880 - 168 páginas
...is of a dull slaty color, and belongs to the Lithosiide groupe of the silk-worm family (Bombycidz). When the caterpillar begins its work, it lets itself down from the lip of the leaf which it has chosen, by spinning a thread of silk, the thickness of which it slowly... | |
 | Etty Woosnam - 1881 - 168 páginas
...process by which some caterpillars turn into a chrysalis, as thus described in natural history : — " When the caterpillar begins its work, it lets itself...which it has chosen, by spinning a thread of silk. Having given the proper length to the cord, it proceeds to weave its elegant bag, placing itself in... | |
 | Henry Walter Bates - 2004 - 452 páginas
...CATERPILLARS. 349 dull slaty colour and belongs to the Lithosiide group of the silk-worm family (Bombyeidae). When the caterpillar begins its work, it lets itself...intervals, connecting them at the same time by means of cross threads ; so that the whole, when finished, forms a loose web, with quadrangular meshes of nearly... | |
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When the caterpillar begins its work, it lets itself down from the tip of the leaf which it has chosen, by spinning a thread of silk, the thickness of which it slowly increases as it descends. Having given the proper length to the cord, it proceeds to... 