. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. â â 4 ⢠j i'-i I].,.; â *!â : :' â â ' 'ii'^ -â¢; jjl ....;â m " ' 14 i;jv . ; â â¢fll h'- â . â¢â !;â !â â ⢠".:. ⢠I'll »' , . â â â 60 CnLEurXEKA OP NORTH AMEHICA. soparati'd t'roiu the thorax, movable. 8ii,rn«. Ui^ad immei'beJ iu the thorax. Catoi'KS. Group I.âSllphae. Insects of large or moderate size, Hying on carrion, compose this group. Pteroloma (which includes Lyrosoma Mann.) and Necrophilus occur only in the Pacific district; the other two gene
. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. â â 4 ⢠j i'-i I].,.; â *!â : :' â â ' 'ii'^ -â¢; jjl ....;â m " ' 14 i;jv . ; â â¢fll h'- â . â¢â !;â !â â ⢠".:. ⢠I'll »' , . â â â 60 CnLEurXEKA OP NORTH AMEHICA. soparati'd t'roiu the thorax, movable. 8ii,rn«. Ui^ad immei'beJ iu the thorax. Catoi'KS. Group I.âSllphae. Insects of large or moderate size, Hying on carrion, compose this group. Pteroloma (which includes Lyrosoma Mann.) and Necrophilus occur only in the Pacific district; the other two genera are found on both sides of the continent. Our genera are:â AntennsB with ten apparent joints, club globose, 4-jointed. Nkcrophorcs. Antenna) with eleven distinct joints ; Antennffi clubbed,* tibi.'e armed with spines; Third joint of antennae not longer than the second, shorter than the first. 'HA. Third joint of antenna; as long as the first. Antennae nearly filiform, tibise not spinous. Ptekoloma. Group II.âCatopes. Insects of small size and usually ovate form; some live on car- rion, others in fungi, others in ants' nests. The 8th joint of the antennoe is smaller than the Tth, except iu Colon. Our genera are as follows :â Eyes wanting (anterior tarsi of J 4-jointed.) Adelops. Eyes distinct; Antennre serrate. CxTOPTnicnus. AntenniP clubbed; Eighth joint of antennie small. Catops. Eighth joint of antennce larger than the seventh. Colon. Gatoptrichufi Frankenhaueseri, the type and only species known, is found in Sitkha. Adelops hirtus, the only species yet found in the United States, occurs in the Mammoth Cave, Ken- tucky ; the other western caves will yet furnish other species. Sub-Tribe This sub-tribe contains but a single genus, Sphffirites, of which but one species in Europe and another (S. glahratus Mann.) in Russian America are known. The form is oblong oval, convex; * In NecropJtilus tenuic
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