. The Cambridge natural history. Zoology. 254 COLEOPTERA by Diptera. Some of the species of NecroUa have been spread by commercial intercourse, and K rufiioes appears to be now one of the most cosmopolitan of Insects. The beautifully coloured Coryndes coeruhus is often found in our houses, and is useful, as it destroys the death-watches (Anohmm) that are sometimes very injurious. Trichodcs apiarius, a very lively-coloured red and blue beetle, destroys the larvae of the honey-bee, and Lampert lias reared Tricliodes alvearius from the nests of Chalicodoma muraria, a mason-bee; he re- cords that
. The Cambridge natural history. Zoology. 254 COLEOPTERA by Diptera. Some of the species of NecroUa have been spread by commercial intercourse, and K rufiioes appears to be now one of the most cosmopolitan of Insects. The beautifully coloured Coryndes coeruhus is often found in our houses, and is useful, as it destroys the death-watches (Anohmm) that are sometimes very injurious. Trichodcs apiarius, a very lively-coloured red and blue beetle, destroys the larvae of the honey-bee, and Lampert lias reared Tricliodes alvearius from the nests of Chalicodoma muraria, a mason-bee; he re- cords that one of its larvae, after being full grown, remained twenty - two months caulescent and then transformed to a pupa. Still more remarkable is a case of fasting of the larva of Tri- cliodes avimios recorded by Mayet; ^ this Insect, in its. Fic. 131. - Larva of TiJlus elongatus. (New Forest). A, Head ; B, front leg ; C, termination of the body, more mag- immature form, dcstroyS Acri- "^ dium maroccanum; a larva sent from Algeria to M. Mayet refused such food as was offered to it for a period of two and a half years, and then accepted mutton and beef as food; after being fed for about a year and a half thereon, it died. Some Cleridae bear a great resemblance to Insects of other families, and it appears probable that they resemble in one or more points the Insects on which they feed. The species are now very numerous, about 1000 being known, but they are rare in collections; in Britain we have only nine species, and some of them are now scarcely ever met with. Fam. 57. Lymexylonidae.—Slongateieetlcs, with soft integu- ments, front and middle coxae exserted, longitudinal in position; tarsi slender, five-jointed ; antennae short, serrate, hut rccther broad. Although there are only twenty or thirty species of this family, they occur in most parts of the world, and are remarkable on account of their habit of drilling cylindrical holes in hard wood, after the manner of Anobiidae. T
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