4(>2 I^ULLETIN .■"):{, UNITED STATES NATIONAL MUSEUM. 



17443. Orthis salemensis Walcott. Cotype. 



Lower Cambrian. Near Salem, Washington County, New 

 York. 



Walcott, Amer. Jouru. Sci. (3), XXXIV, 1887, p. 190, ])1. i, fig.s. 

 17, 17a; Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 612, 

 pi. 72, figs. 6, 6a. 



= Billingsella salemen.si.s. 



35214. Orthis (?) sandbergi Winchell. Plesiotypes. 



Gallatin ( Upper Cambrian). Ivlk Pa.s.s, Yellowstone Na- 

 tional Park. 



Walcott, Mon. XXXII, Pt. II, U. S. Geol. vSurv., 1899, p. 452, 

 pi. 61, figs. 2, 2a-d. 



= Billing.sella (Otusia) .sandbergi. 



17885. Orthis subjugata Hall ? Plesiotypes. 



17891. Richmond (Ord. ). Three miles above vSavannah, Illinois. 



Owen, Rept. Geol. vSiirv. Wis., Iowa, and Minn., 1852, pi. 2 E, 

 figs. 4, 5. (?9)- 



= Hebertella occidentalis. 



35455. Orthis (Dalmanella) testudinaria Dalman. Plesiotypes. 



Trenton (Ord.). Maury County, Tenne.s.see. 



Hayes and Ulrich, U. vS. Geol. Surv., Folio 95, 1903, illustration 

 sheet, fig. 43. 



= Dalmanella testudinaria. 



17246. Orthis testudinaria Dalman. Plesiotype. 



Upper Pogonip (Ord. J. l^ast of Hamburg Mine, Eureka 

 District, Nevada. 



Walcott, Mon. VIII, U. vS. Geol. vSurv., 1884, p. 72, pi. 11, figs. 

 10, loa. 



= Dalmanella testudinaria. 

 See Orthis di.sparilis. 



9346. Orthis thiemii White. Plesiotype. 



Kinderhook (Miss.). Burlington, Iowa. 



White, Twelfth Ann. Rept. U. vS. Geol. vSurv. Terr., Pt. I, 1883, 

 p. 164, pi. 4T, fig. 4d. 



= Rhipidomella thiemii. 



17252. Orthis tricenaria Conrad. Plesiotype. 



17253. Upper Pogonip (Ord. ). Rureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 74, pi. 11, figs. 

 4, 4a. 



13784. Orthis tulliensis Vanuxem. Ple.siot^'pe. 



Middle and U])per De\-onian. Ivureka District, Nevada. 



Walcott, Mon. VIII, V. S. Geol. Surv., 1884, p. 115, pi. 2, ligs. 

 12, 12a. 



= Schizophoria tulliensis. 



