_Barbules_, the subdivisions of the barbs, some of which are provided with hooklets. [Please select]
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Of what use are the hooklets on the barbules. [Please select]
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The saw-fly caterpillar, on the other hand, may have as many as eight pairs of pro-legs, the series beginning on the second abdominal segment; here, however, the pro-legs have no hooklets. [Please select]
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Of the posterior segments, five also bear false or pro-legs, which are short, unjointed, and provided with a number of hooklets. [Please select]
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