848 BULLETIN r)3, UNITED STATES NATIONAL MUSEUM. 



4 1 28 1. Leperditia appressa Ulrich. Cotypes. 



41282. Trenton (Ord.). Near Harrodsburg and Danville, Ken- 



tucky. 



Ulrich, Joiirn. Cincinnati vSoc. Nat. Hist., XIII, 1890, p. 176, pi. 

 1 1, figs. 5a-5d. 



1 5401. Leperditia ? argenta Walcott. Cotypes. 



Middle Cambrian. One mile below Argenta, Big Cotton- 

 wood Canyon, Utah. 



Walcott, Bull. Nf). 30, T'. .S. Geol. vSurv., 1S86, p. 146, pi. S, fig. 5. 



41365. Leperditia bivertex Ulrich. Holotype. 



Utica (Ord.). Covington, Kentucky. 



IHrich, Journ. Cincinnati Soc. Nat. Hist., II, 1S79, p. 11, pi. 7, 

 figs. 5, 5a. 



1 741 1. Leperditia bivia White. Cotypes. 



Middle Ordovician. Queen Spring Hill, vSchell Creek 

 Range, Nevada. 



White, Prelim. Rept. U. S. Geogr. Surv. W. looth Merid., 1874, 

 p. 11; Rept. U. S. Geogr. vSurv. W. looth Merid., IV, Pt. I, 



1877, P- .S''^. pb 3. figs- 7a-7d. . 



41276. Leperditia caecigena Miller. Plesiotypes. 



Richmond (Ord. ). Indian Kentuck Creek, near Madi.son, 

 Indiana. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist.. XIII, 1890, p. 176, pi. 

 1 1 , figs. 6a-6d. 



41279. Leperditia caecigena frankfortensis Ulrich. Cotypes. 



Trenton (Ord. ). Frankfort, Kentucky. 



THricli, Join-n. Cincinnati Soc. Nat. Hist., XIlI, 1890, p. 177. 



41359. Leperditia crepiformis Ulrich. Cotypes. 



Utica (Ord.). Covington, Kentucky. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., II, 1879, p. 10, pi. 7, 

 figs. 3, 3a. 



= Jonesella crepidiformis. 



1744S. Leperditia (Isoxys) dermatoides Walcott. Holot3'pe. 



Lower Caml)rian. Washington County, New York. 



Walcott, Anier. Journ. Sci. (3), XXXI\', 1887, p. 192, pi. i, figs. 

 13, 13a; Tenth Ann. Rept. U. S. Geol. vSurv., 1890, p. 626, pi. 

 80, figs. I, I a. 



41315. Leperditia (? Primitia ) dorsicornis ITlrich. Holotype. 



Richmond (Ord.). vSavannah, Illinois. 



Ulrich, Anier. Cieol., X, 1S92, p. 267, pi. 9, figs. 24-26. 

 = Le])erditella dorsicornis. 



41263. Leperditia fabulites (Conrad). Plesiotypes. 



41267. vStones River (Ord.;. Beloit, Wisconsin; Lebanon, Ten- 



nessee. 



Ulrich. Jour. Cincinnati vSoc. Nat. Hist., XIII, 1890, p. 173, pi. 11, 

 figs ja-id; 2. 



