TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 337 



46207. Ischyrodonta elongata Ulrich. Holotype and plesiotype. 



4620S. Richmond (Ord. ). Oxford, Ohio, and Richmond, Indiana. 



Ulrich, Amer. Geol., VI, 1S90, p. 175; Geol. Surv. Ohio, VII, 

 1S93, p. 675, pi. 54, figs. 20, 21. 



46209. Ischyrodonta miseneri Ulrich. Holotype. 



Richmond (Ord.). Richmond, Indiana. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 675, pi. 54, figs. 10, 11. 



46210. Ischyrodonta modioliformis Ulrich. Cotypes. 



Richmond (Ord.). Richmond, Indiana. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 676, pi. 54, figs. 4-9. 



4621 1. Ischyrodonta ovalis Ulrich. Holotype. 



Richmond (Ord.). Near Richmond, Indiana. 



Ulrich, Nineteenth Ann. Rept. Geol. and Nat. Hist. Surv. Minn., 

 1892, p. 242; Geol. Surv. Ohio, VII, 1893, p. 674, pi. 54, figs. 

 12-15. 



46212. Ischyrodonta truncata Ulrich. Cotypes. 



Richmond (Ord.). Oxford, Ohio. 



Ulrich, Amer. Geol., VI, 1890, p. 174, figs, na-e; Geol. Surv. 

 Ohio, VII, 1893, p. 672, text figs. a-e. 



46213. Ischyrodonta unionoides (Meek). Plesiotypes. 



Lorraine (Ord.). Covington, Kentucky. 



Ulrich, Geol. Surv. Ohio, VII, 1893, p. 677, pi. 54, figs. 1-3. 



146116. Isocardia Carolina Dall. Holotype. 



Miocene. Edgecombe County, North Carolina. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. VI, 1903, p. 

 1067, pi. 46, fig. 22. 



1 15773. Isocardia floridana Dall. Holotype. 



Yicksburgian (Oligocene). Arredondo, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, p. 

 1066, pi. 46, figs. 21, 26. 



30235. Isocardia medialis (Conrad). Plesiotypes. 



Buda (IyOwer Cret.). Near Austin, Texas. 



Shattuck, Bull. No. 205, U. S. Geol. Surv., 1903, p. 27, pi. J4, 

 figs. 4, 5; pi. 15, figs. 1, 2. 



41289. Isochilina amiana Ulrich. Holotype. 



Chazy? (Ord.). Sussex street, Ottawa, Canada. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 180, 

 pi. 11, figs. I2a-I2C. 



41290. Isochilina amiana insignis Ulrich. Holotype. 



Chazy? (Ord.). Sussex street, Ottawa, Canada. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p, 181, 

 pi. 11, fig. 13. 



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