All that we have said relates to the _Aphrophora spumaria_, or Froghopper (Fig. 85), an insect common all over Europe, and which Geoffroy calls the _Cigale bedeaude_. [Illustration: Fig. 85.--The Froghopper (_Aphrophora spumaria_).] "It is of a brown colour," says Geoffroy, "often rather greenish. Its head, its thorax, and its elytra, are finely dotted; on these last one sees two white oblong spots. The lower part of the insect is light brown."[27] [27] "Histoire abrégée des Insectes, dans laquelle ces animaux sont rangés dans un ordre méthodique." In 4to. Tome i., p. 416. An VII. de la République. We will mention, as it belongs to the group with which we are now occupied, a noxious insect, _Iassus devastans_, which since 1844 seems to have taken up its quarters in the commune of Saint Paul, in the department of the Basses-Alpes. It sucks the leaves and stalks of cereals, causing them to wither, and may be found even in winter on young corn, but principally in the spring. According to M. Guérin-Méneville, its head is of an ochrey yellow, with the apex marked with black spots; the forehead yellow, elongated, striped with black, as are the legs. The elytra are straw-coloured and spotted with brown. The wings are transparent, and slightly blackened at the extremities. This remarkable insect, which is not more than the twelfth of an inch in length, jumps and flies with great ease. [Illustration: Fig. 86.--1. Hypsauchenia balista. 2. Membracis foliata. 3. Centrotus cornutus. 4. Umbonia Spinosa. 5. Bocydium globulare. 6. Cyphonia furcata.] A small brownish insect, whose strange appearance struck Geoffroy, the historian of the insects of the environs of Paris, may be seen springing over the fern stalks and thistles, in the damp parts of most of the woods of Europe. Geoffroy calls this insect "le Petit Diable." "Le Petit Diable," he writes, "is of a dark blackish-brown. Its head is flat, projecting but slightly, and, as it were, bent downwards. Its thorax, which is rather broad, has two sharp horns, which terminate in pretty long points on the sides. In the middle of the thorax is a crest or comb, which, prolonged into a sort of sinuous and crooked horn, terminates in a very sharp point, reaching to within one quarter of the extremity of the wing-cases. These--viz., the wing-cases--are dark, with brown veins; and the wings, shorter than their cases, are rather transparent. The insect jumps very well, and is not readily caught."[28] [28] "Histoire abrégée des Insectes, dans laquelle ces animaux sont rangés dans un ordre méthodique." In 4to. Tome i., p. 423. An VII. de la République.