CINCINNATI GROUP FOSSILS. 27 



Range. 



577. A. minor, Ulrieh near 3 



578. A. parallelus, Ulrieh near 3 



579. A. quadratus, Hinde near 3 



580. A. tridentatus, Ulrieh near 3 



Order TUBICOLA. 



Genus Conchicolites, Nicholson. 



581. C. corrugatus, Nicholson 3— G 



582. C. flexuosus, Hall 0—6 



583. C. minor, Nicholson 3—6 



Genus Spirorbis, Lamark. 



584. S. cincinnatiensis, Miller & Dyer near 4? 



585. S. lovelandensis, James ? 



Genus Serpulites, McLeay. 



586. S. dissolutus, Billings 0—4 



Genus Tentaculites, Schlotheim. 



587. T. richmondensis, S. A. Miller 6—7 



588. T. sterlingensis, Meek & Worthen 3^—2 



589. T. tenuistriatus, Meek & Worthen %— 2 



CRUSTACEA. 



Family ACIDASPID^E. 



Genus Acidaspis, Murchison. 



590. A. cincinnatiensis, Meek 1 — 6? 



591. A. anchoralis, S. A. Miller near 4 



592. A. crossota, Locke near 1 



593. A. onealli, S. A. Miller near 6 



594. A.trentonensis, Hall % — 2 



Family CERAURIDJ1. 



Genus Ceraurus, Green. 



595. C. icarus, Billings 6 — 7 



