. The animal kingdom : arranged after its organization; forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 580 Div. 3. ARTICULATA.—INSECTA. Class 3. T. lucifugus SlwA flavicolUs iiiliabit the south of Fiance, livini^ in the interior of trees. The exotic species have been but imperfectly characterised, Linnaeus having confounded several under the name of Embia, Latr., comprises several insects allied to Ternies, butwith the head larger than the thorax ; tarsi 3-jointed; wings scarcely extending beyond the abdomen. [See my monograph on this exoti
. The animal kingdom : arranged after its organization; forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 580 Div. 3. ARTICULATA.—INSECTA. Class 3. T. lucifugus SlwA flavicolUs iiiliabit the south of Fiance, livini^ in the interior of trees. The exotic species have been but imperfectly characterised, Linnaeus having confounded several under the name of Embia, Latr., comprises several insects allied to Ternies, butwith the head larger than the thorax ; tarsi 3-jointed; wings scarcely extending beyond the abdomen. [See my monograph on this exotic genus, published in Transac- tions of the Linnaan Hodety of London.} The other Termitines have the tarsi 2-jointed ; tlie labial palpi indistinct, or very short; the antennae about 10-jointed ; the first segment of the thorax yery small, and the hind ivings smaller than the fore ones. They form the genus Psocus, Latr. (Termes, Hemerobius, Fabr.), These are insects with a short, soft, and gibbose body ; the head large ; the antennae setaceous ; wings roof-like, and but slightly veined. They are very active, and live on the bark of trees. We generally find in books of collections of plants, the P. pulsatorius, of a whitish coloUii', and which has been believed to produce the slight noise like the ticking of a clock, often heard in houses, whence its specific name. 5. The Perlides, which have three joints in the tarsi, the mandibles almost always membranous and snjall, with the hind wings broader than the fore wings, and folded at the inner edge. They consist of the genus Fig. 114. - .Mropos PeRLA, Geoff.,- puUaiorius. In wliich the body is elongate, narrow, and flattened; the head rather large; antennae setaceous; prothorax nearly square ; tlie wings shutting horizontally oiithe l>ody; and the abdomen generatly terminated by two setaj. Their larva; are aquatic, and are stated [by Latreille, but erroneously,] to reside in cases which they bear about with them. [TJjey are na
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