TYPE SPECIMENS OE INVERTEBRATE EOSSILS. 337 



46207. Ischyrodonta elongata Ulrich. Holotype and ]-)le.siotype. 



46208. Richmond (Ord. ). Oxford, Ohio, and Richmond, Indiana. 



Ulrich, Amer. Geol., VI, 1890, p. 175; Geol. Surv. Ohio, \II, 

 1893, p. 675, ph 54, fijjs. 20, 21. 



46209. Ischyrodonta miseneri Ulrich. Holotype. 



Richmond (Ord.). Richmond, Indiana. 



Ulricli, Oeol. Siirv. Ohio, \'II, 1893, p. 675, pi. 54, figs. lo, 11. 



46210. Ischyrodonta modioHformis Ulrich. Cotypes. 



Richmond (Ord.). Richmond, Indiana. 



Ulrich, UtC'oI. vSurv. Ohio. VII, 1S93, p. 676, pi. 54. figs. 4-9. 



46211. Ischyrodonta ovalis Ulrich. H()loty])e. 



Richmond (Ord.). Near Richmond, Indiana. 



Ulrich, Nineteenth Ann. Rept. Geol. and Nat. Hist. vSurv. 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, iia-e; (Teol. Surv. 

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



46213. Ischyrodonta unionoides ( Meek). Ple.siotype.s. 



Lorraine (Ord.). Cox'ington, Kentncky. 



Ulrich, (ieol. Surv. Ohio, VII, 1893, p. 677, pi. 54, figs. r-3. 



146116. Isocardia Carolina Dall. Holotyioe. 



Miocene. Hdijeconibe County, North Carolina. 



Dall, Trans. Wagner I'ree Inst. Sci. Phila., Ill, Pt. VI, 1903, p. 

 1067, pi. 46, fig. 22. 



1 15773. Isocardia floridana Dall. Holotype. 



\'icksburgian (Oligocene). Arredondo, Florida. 



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

 1066, pi. 46, figs. 2r, 26. 



30235. Isocardia medialis (Conrad ). Plesiotypes. 



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



Shattuck, Bull. No. 205, U. S. Geol. Surv., 1903, p. 27, ])I. 14, 

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



41289. Isochilina amiana Ulrich. Holotype. 



Chazy? (Ord.). Sus.sex .street, Ottawa, Canada. 



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



pi. II, figs. I2a-I2C. 



41290. Isochilina amiana insignis Ulrich. Holotype. 



Chazy? (Ord.). vSus.sex street, Ottawa, Canada. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, j). uSi, 

 pi. II, fig. 13. 



23232—05 22 



