. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. wlWi. I:-.; ', r)4 C0LE(1PTERA OF NOUTH AMEUICA. Those are famuli, sliiiiiiif.'-, usually ovate, sometimes slender in- sects, uf a brown eolor, more or less clothed with oreet Imirs. They are t'uuiid variously, near water, under stones, in ants' nests, and under bark, and are rre(iuently seen Hying in tiie twilight. Tlio general form is that of Pselaphidie, from which they differ by tin: long elytra and the conical distant posterior coxa). Our genera arc :â geniculate; fir
. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. wlWi. I:-.; ', r)4 C0LE(1PTERA OF NOUTH AMEUICA. Those are famuli, sliiiiiiif.'-, usually ovate, sometimes slender in- sects, uf a brown eolor, more or less clothed with oreet Imirs. They are t'uuiid variously, near water, under stones, in ants' nests, and under bark, and are rre(iuently seen Hying in tiie twilight. Tlio general form is that of Pselaphidie, from which they differ by tin: long elytra and the conical distant posterior coxa). Our genera arc :â geniculate; first joint as long as vlie two following. Micuostemma. Aii't' straight,; First joint of lal)ial palpi very short; Posterior trochanters long, situated in the axis of the thighs. KuMICKPS. Posterior trochanters small, on the internal face of the tliiglis. tScVDM;'S. First join' of lahial palpi distinct; I'rotii<irax cjaadrate, not wider than the elytra. Ki'thkia. Prothorax transverse, wider than the elytra. Eutheia has occurred in Russian America, and Cephennium in the Atlantic States. Scydmu^nus is represented numerous species on both sides of the continent. Eumicrus is represented by i,'i/. Zimmermanni in the Southern States. , I'ci .'J â â¢â -â ⢠Fam. IX.ârSELAPHTDAE. Mentum small, corneous, more o:^ less quadrate; ligula very small, membranous, with large diverging paraglodsiu; labial ;.ipi'very small. Maxilhe with membranous ciliated lobes, the outer mucV larger than the inner; j^alpi usually very long, and 4-jointe(.l. Mand'bles usually broad and short, with the tip curved and acute. Antennae 11-jointed (rarely 10-jointed) in the second sub- family; 1- to ti-jointed iu the first, usually clavate, rarely inonilifortn. Eyes composed of large lenses, sometimes wanting. Prothorax with the side pieces! not distinct; prosternum almost obsolete between thecoxic, coxal cavities open behind. M';sosternum short, obsolete between th
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