308 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Ctenodonta nitlda Continued. 



Ctenodonta nitida Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 592, pi. 42, figs. 



44-49. 



Black River (Decorah): Minneapolis, etc., Minnesota. 

 CotypesC&t. No. 46141, U.S.N.M. 



Ctenodonta novicia (Sardeson). 



Tellinomya novicia Sardeson, Bull. Minnesota Acad. Nat. Sci., 4, 1896, p. 74, 



pi. 3 "fig. 3. 

 St. Peter: South St. Paul and Daytons Bluff, Minnesota. 



Ctenodonta? nucleiformis (Hall). 



Tellinomya nucleiformis Hall, Pal. New York, 3, 1859, p. 263, pi. 49, fig. 1. 

 Cayugan (Manlius): Winfield, Herkimer County, New York. 



Ctenodonta nuculiformis (Hall). 



Modiolopsis? nuculiformis Hall, Pal. New York, 1, 1847, p. 298, pi. 82, figs. 5a, b. 

 Tellinomya nuculiformis ^liller, N. A. Geol. Pal., 1889, p. 515 (gen. ref.). 

 Lyonsia nuculiformis Emmons, Amer. Geology, 1, pt. 2, 1855, p. 172. 

 Ctenodonta nuculiformis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 581 (gen. ref.). 

 Utica: Turin and Waterford, New York. 



Ctenodonta obliqua (Hall). 



Nucula obliqua Hall, Amer. Jour. Sci. and Arts, 43, 1845, p. 292. 



Tellinomya? obliqua Meek, Pal. Ohio, 1, 1873, p. 139, pi. 11, figs, lla-c. Miller, 

 Cincinnati Quart. Jour. Sci., 1, 1874, p. 229. Lesley, Geol. Surv. Pennsyl- 

 vania, Rep. P 4, 1890, p. 1169, figs. 



Ctenodonta obliqua Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 604, pi. 42, figs. 

 83-87. Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 394, fig. 502i-j. 



Palaeoconcha obliqua Miller, N. A. Geol. Pal., 1889, p. 498 (gen. ref.). 



Palceoconcha faberi Miller, N. A. Geol. Pal., 1889, p. 498, fig. 878. Miller and 

 Faber, Jour. Cincinnati Soc. Nat. Hist., 17, 1894, p. 150. 



Trenton-Richmond: Cincinnati, Ohio, and vicinity; Kentucky; Tennessee; 

 Illinois; Iowa; etc. 



Plesiotypes.a,t. No. 46142, 46143, U.S.N.M. 



Ctenodonta ohioensis Bassler (new name). 



Tellinomya (Nucula?) socialis Foerste, Geol. Surv. Ohio, Pal., 7, 1893, p. 563, 



pi. 37, figs. 12a-c. 

 Upper Medinan (Brassfield): Near Dayton, Ohio. 



Ctenodonta ovata (Hall). 



Tellinomya ovata Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 28. Whit- 

 field, Mem. Amer. Mus. Nat. Hist., 1, pt. 2, 1895, p. 52, pi. 6, fig. 9. 

 Ctenodonta ovata Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 581 (gen. ref.). 

 Black River (Platteville): Beloit, Wisconsin. 



Ctenodonta oviformis Ulrich. 



Ctenodonta oviformis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 586, pi. 42, fig. 29. 

 Trenton (Prosser): Near Cannon Falls, Minnesota. 

 Black River (Auburn) : Lincoln County, Missouri. 

 Holotype.C&t. No. 46144, U.S.N.M. 



Ctenodonta parvidens Raymond. 



Ctenodonta parvidens Raymond, Amer. Jour. Sci., 20, 1905, p. 372. Whiteaves, 



Ottawa Nat, 22, 1908, p. 113, pi. 3, fig. 16. 

 Chazyan (Aylmer): Hog Back, Ottawa, Ontario. 



