Inside, there is no foreign matter, nothing but foam and eggs. The latter occupy only the lower portion, where they are immersed in a frothy matrix and packed one on top of the other, slantwise. The upper portion, which is larger in some cases than in others, consists solely of soft, yielding foam. Because of the part which it plays when the young larvæ come into existence, I shall call it the ascending-shaft. A final point worthy of observation is that all the sheaths are planted more or less vertically in the soil and end at the top almost level with the ground. We will now describe specifically the layings which we find in the cages. That of Pachytylus cinerescens is a cylinder six centimetres long and eight millimetres wide. [82] The upper end, when it emerges above the ground, swells into a nipple. All the rest is of uniform thickness. The yellow-grey eggs are fusiform. Immersed in the froth and arranged slantwise, they occupy only about a sixth part of the total length. The rest of the structure is a fine, white, very powdery foam, soiled on the outside by grains of earth. The eggs are not many in number, about thirty; but the mother lays several batches. That of P. nigrofasciatus is shaped like a slightly curved cylinder, rounded off at the lower end and cut square at the upper end. Its dimensions are an inch to an inch and a half in length by a fifth of an inch in width. The eggs, about twenty in number, are orange-red, adorned with a pretty pattern of tiny spots. The frothy matrix in which they are contained is small in quantity; but above them there is a long column of very fine, transparent and porous foam. The Blue-winged Locust (Œdipoda cærulescens) arranges her eggs in a sort of fat inverted comma. The lower portion contains the eggs in its gourd-shaped pocket. They also are few in number, some thirty at most, of a fairly bright orange-red, but unspotted. This receptable is crowned with a curved, conical cap of foam. The lover of the mountain-tops, the Pedestrian Locust, adopts the same method as the Blue-winged Locust, the denizen of the plains. Her sheath too is shaped like a comma with the point turned upwards. The eggs, numbering about two dozen, are dark-russet and are strikingly ornamented with a delicate lacework of inwrought spots. You are quite surprised when you pass the magnifying-glass over this unexpected elegance. Beauty leaves its impress everywhere, even in the humble covering of an unsightly Acridian incapable of flight.