r 



TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 459 



9826. Orthis arachnoides Hall ? Plesiotype. 



Carbcjiiifcrous ? Texas. Ivxact localiU' not i;ivfii. 



Hall, Rept. U. S. Mexican Hound. Siirv., Ivinory, I, I't. II, 1.S57, 



pi. 20, fij^.s. 3a, 3b. 

 [KitluT vSoliiichertella or Stre])torhynchus, possibly of the Lower 

 Carboniferous of the El Paso region, Texas.] 



CS547. Orthis biforata lynx (Eichwald). Plcsiotypes. 



Richnioiid (Ord. ). Silver City, New Mexico. 



White, Rept. U. S. Geol. vSurv. W. looth .^lerid., I\', PL J, 1S76, 

 p. 74, pi. 4, figs. 9a, 9b. 



= Platystro])liia lynx. 



6835. Orthis carbonaria vSwallow. Plesiotypes. 



Upper Carboniferoii.s. Rock Bluff near Nebra.ska Cit}', 

 Nebra.ska. 



Meek, Final Rept. U. vS. Geol. Surv. Nebr. (Hayden), 1S72, ]). 173, 

 pi. r, figs. Sa-c. 



= Rhipidomella pecosi. 

 See Orthis peco.si. 



17887. Orthis disparilis Conrad. Plesiotype. 



Trenton (Ord.). Ttirkey River, Iowa. 



Owen, Rept. Geol. Surv. Wis., Iowa, and Minn., 1852, pi. 2 B, 

 fiR- 2;,. 



= Dalnianella testtxdinaria. 



24596. Orthis eurekensis Walcott. Cotypes. 



Middle Cambrian. vSecret Canyon, Eureka Di.strict, 

 Nevada. 

 Walcott, Mon. VIII, I^. S. Geol. Surv., 1884, 3 22, j)l. 9, figs. 8, 8a. 

 — Orthis (Ortisia?) etircken.sis. 



17259. Orthis hamburgensis Walcott. Cotypes. 



Upper Pogonip (Ord.). Ettreka District, Nevada. 



Walcott, Mon. VIII, V. S. Geol. Surv., 18S4, p. 73, ])1. 1 1, figs. 5, 5a. 

 = Dalnianella haniburgen.sis. 



24363. Orthis harttii Rathbun. Cotypes. 



Middle Devonian. Rio Maecuru, Brazil. 



Rathbun, Proc. Boston Soc. Nat. Hist., XX, 1878, p. 23. 

 = Rhipidomella harttii. 



15355. Orthis ? highlandensis Walcott. Cotype. 



Lower Caml)rian. Near Pioclie, Nevada. 



Walcott, Bull. No. 30, U. S. Geol. Surv., 1886, p. 119, pi. S, figs. 

 3-30; Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 612, ])1. 72, 

 fi^s. 5-5l>- 



= Billingsella hiuhlandensis. 



