The microscope and its revelations . uction; and the vast order Coleo-ptera is subdivided into primary groups, according as thetarsus consists of five, four, or three segments. The lastjoint of the tarsus is usually furnished with a pair of stronghooks or claws (Figs. 294, 295); and these are often serrated(that is, furnished with saw-Hke teeth), especially near thebase. The under surface of the other joints is frequentlybeset with tufts of hairs, which are arranged in variousmodes, sometimes forming a complete sole; this is espe-cially the case in the family CurcuUonidce; so that a pair ofthe
The microscope and its revelations . uction; and the vast order Coleo-ptera is subdivided into primary groups, according as thetarsus consists of five, four, or three segments. The lastjoint of the tarsus is usually furnished with a pair of stronghooks or claws (Figs. 294, 295); and these are often serrated(that is, furnished with saw-Hke teeth), especially near thebase. The under surface of the other joints is frequentlybeset with tufts of hairs, which are arranged in variousmodes, sometimes forming a complete sole; this is espe-cially the case in the family CurcuUonidce; so that a pair ofthe feet of the diamond-beetle, mounted so that one showsthe upper surface made resplendent by its jewel-like scales,and the other the hairy cushion beneath, is a very interestingobject. In many Insects, especially of the Fli/ kind, the footis furnished with a pair of membranous expansions, termedpulviUi (Eig. 294); and these are beset with numerous hairs,each of which has a minute disk at its extremity. This FEET OF INSECTS. Fig. ) h m--d YootofFli/.
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Keywords: ., bookcentury1800, booksubjectmicroscopes, booksubjectmicroscopy
