CINCINNATI GROUP FOSSILS. 25 



Family MYTILIID^. 

 Genus Anodontopsis, McCoy. 



Range. 



537. A. (?) milleri, Meek 6—7 



538. A. ( ?) (Modiolopsis?) unionoides, Meek 3—4 



Genus Modiolopsis, Hall. 



539. M. anodontoicles, Conrad near 3^ 



540. M. eincinnatiensis, Hal) & Whitfield — 1 



541. M. concentrica, Hall & Whitfield 3—7 



54la.M. cuneiformis, James near 5 



542. M. curta, Hall 3—7 



543. M. faba, Conrad 0—3 



544. M. modiolaris, Conrad 1 — 7 



545. M. raodioliformis, Meek & Worthen near % 



546. M. nasuta, Conrad near 4 



547. M. pholadiformis, Foster & Whitney 5 — 7 



548. M. terminalis, Hall near 4 



549. M. truncata, Hall 3—6 



550. M. versaillesensis, S. A. Miller 6 — 7 



Family ORTHONOTID^E. 



Genus Orthonota, Conrad. 



551. O, pholadis, Conrad 3 — 6 



Genus Orthodesma, Hall & Whitfield. 



552. O. cancellatum, Ulrich 1 — 2 



553. O. contractum, Hall 3 — 6 



554. O. curvatum, Hall & Whitfield 3—6 



555. O. mickelboroughi, Whitfield near 6? 



556. O. parallelum, Hall 2—6 



557. O. rectum, Hall & Whitfield 4—6 



558. O. subovale, Ulrich 4 — 6 



559. O. intermedium, Ulrich. .. . 3 — 4 



Family CARDIOMORPHID^E. 



Genus Cardiomorpha, DeKoninck. 



560. C. obliquata, Meek near 6 



