814 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Modiolopsis concinna Savage. 



Modiolopsis concinna Savage, Bull. Geol. Surv. Illinois, 23, 1913, p. 54, pi. 2, 



fig. 2. 

 Upper Medinan (Girardeau): Near Thebes, Illinois. 



Modiolopsis(?) consimilis Ulrich. 



Modiolopsis(?) consimilis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 505, pi. 42, 



figs. 17, 18. 

 Stones River (Murfreesboro) : Murfreesboro, Tennessee. 

 Holotype.— Gat. No. 46247, U.S.N.M. 



Modiolopsis contigua Sardeson. 



Modiolopsis contigua Sardeson, Bull. Minnesota Acad. Nat. Sci., 4, 1896, p. 72, 



pi. 2, fig. 8. 

 St. Peter: South St. Paul, Minnesota. 



Modiolopsis corrtjgata Miller and Faber. See Whiteavesia corrugata. 



Modiolopsis cuneiformis James. Not recognized. 



Modiolopsis cuneiformis James, Paleontologist, No. 3, 1879, p. 23. 

 Maysville or Richmond: Near Lebanon, Ohio. 



Modiolopsis curta Hall. Not recognized. 



Modiolopsis curta Hall, Pal. New York, 1, 1847, p. 297, pi. 81, fig. 4; pi. 82, figs. 



2a-d. — Nicholson, Rep. Pal. Prov. Ontario, pt. 2, 1875, p. 35, fig. 11a. 

 Lyonsia curta Emmons, Amer. Geology, 1, pt. 2, 1855, p. 171. 

 Cincinnatian (Pulaski): Loraine, Rodman, Rome, etc., New York. 

 Observation. — Hall's figures, plate 81, fig. 4, and plate 82, fig. 2t, are apparently 

 of Ischyi'odonta unionoides; plate 82, fig. 2a, is of Pterinea demissa and plate 

 82, fig. 2c, is of a small Cyrtodonta from Mineral Point, Wisconsin. 



Modiolopsis depressa Weller. 



Modiolopsis depressa Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 171, pi. II, 



fig. 8. 

 Trenton: Jacksonburg, New Jersey. 



Modiolopsis dictaeus Hall. 



Modiolopsis dictseus Hall, 20th Rep. New York State Cab. Hist., 1868, p. 338, pi. 



14 (5), fig. 7; rev. ed., 1870, p. 385, pi. 14, fig. 7.* 

 Niagaran (Racine): Racine, Wisconsin; Bridgeport, Illinois. 



Modiolopsis dubia Hall. See Goniophora dubia. 



Modiolopsis dychii Miller. 



Modiolopsis dychii Miller, 18th Ann. Rep. Indiana Dep. Geol. Nat. Res., 1894, p. 



331, pi. 8, figs. 4, 5 (adv. sheets, 1892). 

 Richmond: Lebanon, Ohio. 

 Observation. — Not recognizable. Probably based on a crushed specimen. 



Modiolopsis excellens Ulrich. 



Modiolopsis excellens Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 511, pi. 36, figs. 



13 and 14. 

 Richmond (Maquoketa): Spring Valley and Granger, Minnesota. 



Modiolopsis exilis Billings. 



Modiolopsis exilis Billings, Pal. Foss., Geol. Surv. Canada, 2, pt. 1, 1874, p. 132, 

 pi. 8, fig. 5, 5a. — Ami, Proc. Trans. Nova Scotia Inst. Sci., 8, 1895, p. 414 

 (loc. occ). 

 Silurian : Arisaig, Nova Scotia. 



