206 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



28159. Cyrtodonta sillimanensis Ulrich. Cotypes. 



Trenton (Ord.). Head of Frobisher Bay, Baffin Land. 



Ulrich, Proc. U. S. Nat. Mus, XXII, 1900, p. 162, pi. 13, figs. 

 31-33- 



46192. Cyrtodonta subovata Ulrich. Cotypes. 

 46849. Stones River (Ord.). High Bridge, Kentucky. 



46851. Black River (Ord.). St. Paul and Cannon Falls, Minne- 



46852. sota; Mercer County, Kentucky. 



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

 1894, p. 536, pi. 39- %s. 2S-33, 45. 



— Cyrtodonta huronensis. 



46193. Cyrtodonta tenella (Ulrich). Cotypes. 



Black River (Ord.). Six miles south of Cannon Falls, 

 Minnesota. 



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



1894, p. 546, pi. 40, figs. 15-19. 



See Cypricardites tenellus. 



45783. Cyrtolites carinatus Miller. Plesiotypes. 



Utica (Ord.). Newport, Kentucky. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 862, pi. 62, figs. 50-52. 



45949 Cyrtolites cristatus Safford. Cotypes. 



to Trenton (Ord.). Nashville, Jackson County, and L,ind- 



45951. sleys Hill, near Lebanon, Tennessee. 



Safford, Geol. Term., 1867, p. 2S9. 



=Oxy discus cristatus. 



457S4. Cyrtolites dilatatus Ulrich and Scofield. Cotype. 



Black River (Ord.). Near Cannon Falls, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1S97, p. 865, pi. 62, figs. 24-26. 



45785. Cyrtolites disjunctus Ulrich and Scofield. Holotype. 



Richmond (Ord.). Near Spring Valley, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1S97, p. 864, pi. 62, figs. 48, 49. 



45743. Cyrtolites nitidulus Ulrich. Holotype. 



Trenton (Ord.). Covington, Kentucky. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., II, 1879, p. 12, pi. 7, 

 figs. 7, 7a. 



= Cyrtolitina nitidula. 



17898. Cyrtolites ornatus Conrad? Plesiotype. 



Black River (Ord.). Three miles above Fort Snelling, 

 Minnesota. 



Owen, Rept. Geol. Surv. Wis., Iowa, and Minn., 1852, pi. 2B., fig. 1. 



