. Elementary lessons on insects . Fig. 31.—The dobson, Corydalis cornula (after Lintner); A, its larva (known to fishermen as the "hell-grammite"); B, the pupa; C, the adult male; D, the head of the female (note the shorter mandibles). The larva that hatches from the egg creeps down the stalk, and at once starts foraging. It is a very useful insect for it eats aphids (whence the name "aphis lion" by which it is sometimes known), and has a big appetite. It is one of

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Keywords: ., bookcentury1900, bookcollecti, bookdecade1920, booksubjectinsects