. The Cambridge natural history. Zoology. 74 HYMENOPTERA to wood : B, nests (Fig. 29) of this Insect are often attached to the twigs of shrubs, while those of the two species previously mentioned are usually placed on objects that offer a large surface for fixing the foundations to, such as walls. According to Goureau the larva of this species forms in one corner of its little abode, separated by a partition, a sort of dust-heap in which it accumulates the various debris re- sulting from the consumption of its stores. Eumenes ccniica, according to Home, constructs in Hindostan clay-nest
. The Cambridge natural history. Zoology. 74 HYMENOPTERA to wood : B, nests (Fig. 29) of this Insect are often attached to the twigs of shrubs, while those of the two species previously mentioned are usually placed on objects that offer a large surface for fixing the foundations to, such as walls. According to Goureau the larva of this species forms in one corner of its little abode, separated by a partition, a sort of dust-heap in which it accumulates the various debris re- sulting from the consumption of its stores. Eumenes ccniica, according to Home, constructs in Hindostan clay-nests with very delicate walls. This species pro- visions its nest with ten or Uvelve green de- caterpillars ; on one occasion this ob- ^rver took' from one cell eight green tion of the cell. (After caterpillars and one black. It is much Andre.) ., • • , attacked by parasites owing, it is thought, to the delicacy of the walls of the cells, which are easily pierced ; from one group of five cells two specimens only of the Eumenes were reared. ()<li/nerus, with numerous sub-genera, the names of which are often used as those of distinct genera, includes the larger part of the solitary wasps ; it is very widely distributed over the earth, and is represented by many peculiar species even in the isolated Archipelago of Hawaii ; in Britain we have about fifteen species of the genus. The Odynerus are less accomplished architects than the species of Eumenes, and usually play the more humble parts of adapters and repairers ; they live either in holes in walls, or in posts or other woodwork, or in burrows in the earth, or in stems of plants. Several species of the sub- genus H/i//rs have the remarkable habit of constructing burrows in sandy ground, and forming at their entry a curvate, freely projecting tube placed at right angles to the main bur- row, and formed of the grains of sand brought out by the Insect during excavation and cemented together. The habits of one such species were
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