550 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



46281. Psiloconcha elliptica Ulrich. Cotypes. 



Richmond (Ord.). Clarksville, Ohio. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 667, pi. 52, figs. 3, 4; Geol. 

 and Nat. Hist. Surv. Minn., Final Rept, III, Pt. II, 1894, 

 p. 530, figs. 42c, d. 



46283. Psiloconcha grandis Ulrich. Holotype. 



Richmond (Ord.). Waynesville, Ohio. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 665, pi. 52, figs. 1, 2; Geol, 

 and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. II, 1894, 

 P- 53°, figs. 42a, b. 



46284. Psiloconcha inornata Ulrich. Cotypes. 



Lorraine (Ord.). Cincinnati, Ohio. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 667, pi. 52, figs. 11, 12. 



46285. Psiloconcha minima Ulrich. Holotype. 



Utica (Ord.). Covington, Kentucky. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 669, pi. 52, figs. 8, 9. 



46286. Psiloconcha minnesotensis Ulrich. Holotype. 



Trenton (Ord.). Near Pleasant Grove, Minnesota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. II, 

 1894, p. 531, pl. 36, figs. 31, 32. 



46288. Psiloconcha sinuata Ulrich. Cotypes. 



Lorraine (Ord.). Cincinnati, Ohio. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 668, pl. 52, figs. 15, 16. 



46290. Psiloconcha subovalis (Ulrich). Holotype and plesiotypes. 



46291. Lorraine (Ord.). Morrow, Ohio. 



Utica (Ord.). Near Covington, Kentucky. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 666, pl. 52, figs. 5-7. 

 See Orthodesma subovale. 



46289. Psiloconcha subrecta Ulrich. Holotype. 



Richmond (Ord.). Waynesville, Ohio. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 667, pl. 52, figs. 13, 14. 



46292. Psiloconcha tenuistriata Ulrich. Holotype. 



Utica (Ord.). Covington, Kentucky. 



Ulrich, Geol. Surv. Ohio, VII, 1S93, p. 668, pl. 52, fig. 10. 



46287. Psilonychia perangulata Ulrich. Holotype. 



Lorraine (Ord.). Cincinnati, Ohio. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 649, pl. 51, figs. 1-3. 



114881. Pteria ( argentea var.?) chipolana Dall. Holotype. 



Oligocene. Calhoun County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898, 

 p. 669. 



