LSf) BULLETIN 53, TTNTTED STATES NATIONAL MUSEUM. 



46149. Ctenodonta retrorsa Ulrich. Holotype. 



Trenton (Ord.). Near Burgin, Kentucky. 



Ulrich, Geol. Snrv. Ohio, VII, 1S93, p. 679, pi. 50, figs. 14, 15. 



46150. Ctenodonta scofieldi Ulrich. Cotypes. 



46151. Black River (Ord.). vSix mile.s .south of Cannon F; lis, 



Minnesota. 

 Trenton (Ord.). Goodhue County, Minnesota. 



Ulrich, Geol. and Nat. Hist. vSurv. Minn., Final Rept., Ill, Ft. II, 

 1894, p. 539, pi. 42, figs. 53-58. 



46152. Ctenodonta similis ( Ulrich). Plesiotypes. 



Richmond (Ord.). Spring Valley, Minnesota. 



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

 1894, p. 604, pi. 42, figs. 102, 104-106. 



See Tellinoniya similis. 



46153. Ctenodonta simulatrix Ulrich. Holotype. 



Richmond (Ord.). Spring Valley, Minnesota. 



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

 1894, p. 601, pi. 42, figs. 95-97. 



46154. Ctenodonta socialis Ulrich. Cotypes. 



46155. Black River (Ord. ). Chatfield and .six miles south of Can- 



non Falls, Minnesota. 



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

 i'^94, P- 594, pl- 42, fiRS. 59, 60. 



46156. Ctenodonta subnasuta Ulrich. Holotype. 



Trenton (Ord. ). Near Cannon Flails, Minnesota. 



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

 1894, p. 585, pi. 42, figs. 34-36. 



28163. Ctenodonta subnasuta Ulrich? Ple.siotypes. 



Trenton (Ord.). Head of Frobi.sher Ba}^ Baffin Uand. 



Schuchert, Proc. U. S. Nat. Mas., XXII, 1900, p. 160, pi. 13, 

 figs. 4-6. 



430. Cucullaea (Idonearca?) cordata (Meek and Hayden). 



Holotype and paratypes. 

 F"ox Hills (Cret. ). Moreau River, South Dakota. 



Meek, Rep. U. vS. Geol. vSnrv. Terr., IX, 1876, p. 89, pi. 29, figs. 

 6a, 6h. 



See Area (Cuculkea) cordata. 



348. Cucullaea exigua Meek and Hayden. Holotype and paratype. 

 Fort Pierre (Cret.). Mouth of Milk River, Montana. 

 Meek and Hayden, Proc. .^.cad. vSci. Phila., VIII, 1856, p. 275. 

 = Trigonarca (Breviarca) exigua. 



12546. Cucullaea haguei Meek. Holotype. 



Jurassic. Weber Canyon, \Vah.satch Range, Utah. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1S77, p. 134, 

 pi. 12, figs. i-ib. 



