. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. ELATEniDAE. 167 i' J"' Drftsterius fs united by Diiviil with Cryptoliypnus, but tlio narrower prostemuin, with (li)ul)lo sutures, ilisiinguish it mtv strongly from that gnnusus than in the nearly allied M. caprella. I would also include in this genus Li limbalis llerbst, though the coxal plates are much less suddenly dilated internally; hardly more so, in fact, thau iu Corijinbilt's sethiops. Group IV.âPhysorhlnl. The small number of species constituting this group have the thi
. Classification of the Coleoptera of North America [microform]. Beetles; Beetles; Coléoptères; Coléoptères. ELATEniDAE. 167 i' J"' Drftsterius fs united by Diiviil with Cryptoliypnus, but tlio narrower prostemuin, with (li)ul)lo sutures, ilisiinguish it mtv strongly from that gnnusus than in the nearly allied M. caprella. I would also include in this genus Li limbalis llerbst, though the coxal plates are much less suddenly dilated internally; hardly more so, in fact, thau iu Corijinbilt's sethiops. Group IV.âPhysorhlnl. The small number of species constituting this group have the third joint of the tarsi furnished beneath with a membranous lobe, the fourth being small, and received upon the fourth. The front is very convex, its anterior margin rounded; the posterior coxal plates very narrow externally, suddenly dilated and strongly ' M'M toothed internally; the claws are simple; the mesosternum always ,' v'^ oblique; the prostcrnal sutures double, and iu our gu-'uera exeu- f vated in front. - Coxal plates very suddenly, almost rectangularly, ; '' ..*,â â Second and third joints of antouure together ei^ual to the fourth. - CEEPlDOTRITrS. Third joint equal, or nearly equal, to the fourth. BiiAcuYCKEpis. Coxal plates obliquely, but very strongly, dilated; second and third joints i'. of antennas together nearly equal to the fourth, \M To Crepidotritus belong Cryptohypnus cinereipennis Mann. ' (Anchastus recedens Lcc) and C. tautillus Mann., both from : California. To Brachycrepis I would refer, besides the type B. bicarinatus Lee., also Elater binus Say.; the latter may, how- ever, constitute a new genus, as the joints of the anteunai are carinate on the middle of the broad surface. Group v.âMonocrepidil. In this group the front is convex, margliu'd in front; the first joint of the antenna; is longer thau usual; the prosterual ::uiurcs n '** :â 'â '''i m *â '';» 1 'â ] '} i k " !-, â â .'» :'. .'â â â ',â â
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