Mr. F. P. Pascoe on new Coleoptera. 345 and instructive series. Full illustrations, showing all its known characters, will be prepared for the reports of the Ohio Geological Survey. The two known species, L. Dyeri and L. crateriformisj occur in the Cincinnati group of the Lower Silurian, near Cincinnati, Ohio. XL VI. — Notes on Coleoptera^ with Descriptions of new Genera and Species. — Part I. By Feancis P. Pascoe, F.L.S. &c, [Plate XIV.] List of Genera TROGOSITID^. Elestora fulgui'ata. OTHNIID^. Elacatis lyncea. laticoUis. TENEBRIONID^. BOLITOPHAGIN^. Atasthalus (n. g.) spectrum. Dysantes (w. ff.) taurus, Calymmus (n.g.?) cucullatus. asperullis. Bolitoxenus bifurcus. Heledona nasalis. Diapering. Allophasia (n.g.) Fryi. XJlomin^. Toxicum grande. ZOPHERIN^. Rhypasma querulum, nanum. Exeniotis {n.g.) coUaris. Ancylopomin^. Aiicylopoma («. g.) punctigera. and Species. Helopin^. (Edemutes pretiosus. purpuratus. PYCNOCEBINiE. Odontopus physodes. asperatus. speciosus (note). Amakygjun^. Cyriogeton {n. g.) insignis. Cyphalein^. Cyphale\is Mastersii. GISTELID^. ^thyssius eros. PEDILID^. Egestria (n. g.) tseniata. suturalis. ANTHRIBID^. Nessiara histrio. Habrissus heros. Phides (n. g.) xanthodactylus, Phaulimia Scbauraii. Elestoea. (Trogositidge.) Caput transversum, obliquum, paulo exsertum ; clypeus brevissimus, arcuatus, sutura clypeali profunda ; labrum minutum. Mentum brevissimum, antice late emarginatum ; labium profunde bilobum, margiiie anteriore ciliatum ; palpi articulo ultimo dilatato; maxilJoe lobo interiore inermi. Ocxdi laterales, postice incurvi, tenuiter granulati. Antennce breves, articulo basali subgloboso.. secundo ad octavum brevibus, gradatim latioribus, tribus ultimis valde ti-ans-Ann, & Mag. N, Hist, Ser. 4. VoLyuu 26
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