. Economic entomology . Diplodontus scapularis, larva. Ditto, perfect insect. About the size of a sweet pea. motion so rapid, that although tolerably long, the naked eye cannot see them when in motion, and the animal at the first glance seems to move by some interior hidden mechanism. There are several species of this genus. The colour of the present species is red behind, interrupted in the middle, and black in front, with some specks of red scattered through it. Duges places this species in the genus Diplodontus. Koch removes it into his genus Hygrobates. We have preferred to follow Dug^s. G
. Economic entomology . Diplodontus scapularis, larva. Ditto, perfect insect. About the size of a sweet pea. motion so rapid, that although tolerably long, the naked eye cannot see them when in motion, and the animal at the first glance seems to move by some interior hidden mechanism. There are several species of this genus. The colour of the present species is red behind, interrupted in the middle, and black in front, with some specks of red scattered through it. Duges places this species in the genus Diplodontus. Koch removes it into his genus Hygrobates. We have preferred to follow Dug^s. Genus Hydrochoreutes {Koch). Vos. Hydrochoreutes globulus (Hydrachna globulus, Mull.).—\2. Magnified sketch of first stage of larva ; 13. Specimens of Belostoma grandis, Linn, (the large water scorpion), with nymphs of Hydrachnidse ad- hering to various parts of its body ; 14. Enlarged sketch of hinder part of British water scorpion (Nepa cinerea), with nymphs of Hydrochoreutes globulus adhering to its body ; 15. Sketch of nymph of ditto still more
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha
