as breathing by coming to the surface of the water and carrying down a bubble of air adhering to the posterior part of the body; the larva of _Hydrocyphon_ (Fig. 132, A) {256}possesses several finger-like pouches that can be exstulpated at the end of the body. It is probable that these larvae are carnivorous. The imago of this Insect abounds on the bushes along the banks of some of the rapid waters of Scotland; according to Tournier, when alarmed, it enters the water and goes beneath it for shelter. The third form of larva belongs to the genus _Eucinetus_, it lives on fungoid matter on wood, and has ordinary antennae of only four joints.[132] It is very doubtful whether _Eucinetus_ is related to other Dascillidae; some authorities indeed place it in Silphidae. FAM. 59. RHIPICERIDAE.—_Tarsi five-jointed, furnished with a robust onychium (a straight chitinous process bearing hairs) between the claws; antennae of the male bearing long processes, and sometimes consisting of a large number of joints. Mandibles robust, strongly curved, and almost calliper-like in form._ This small family of less than 100 species is widely distributed, though confined to the warmer regions of the earth, a single species occurring in the extreme south of Eastern Europe. Very little is known as to the natural history. The larva of _Callirhipis dejeani_ (Fig. 133, A) is described by Schiödte as hard, cylindrical in form, and peculiarly truncate behind, so that there appear to be only eight abdominal segments, the ninth segment being so short as to look like an operculum at the extremity of the body. It lives in wood. [Illustration: Fig. 133—A, Larva of _Callirhipis dejeani_ (after Schiödte); B, _Rhipicera mystacina_ male, Australia; C, under side of its hind foot.] {257}[Illustration: Fig. 134—_Athous rhombeus._ New Forest. A, Larva; B, female imago.]