80 CAMBRIAN BEACHIOPODA. 



Present reference. 



Orthia (?) tatei Etheridge, jr. [1905, p. 249] Eoorthis tatei. 



Orthis ungula von Buch [1841, pp. 7-8] Obolus apoUinis. 



Orthis warthi Waagen [1891, pp. 102-104] Wynnia warthi. 



Orthis sp. Kayser [1876, p. 9] Orusia lenticularis. 



Pompeckj [lS96a, p. 4] Eoorthis bavarica. 



Pompeckj [1896b, p. 514, PI. XV, fig. 6] Eoorthis sp. undt. a.' 



Pompeckj [1896b, p. 514, PI. XV, fig. 7] Eoorthis sp. undt. b. 



Orthis (or Orthisina) sp. Etheridge [1905, p. 250] Huenella etheridgei. 



Orthis (Billingsella) pepina Sardeson [1896, p. 96] Billingsella coloradoensig. 



Orthis (Finkelnburgia) Walcott [1905a, pp. 277-278] Finkelnburgia. 



Orthis (Finkelnburgia) finkelnburgi Walcott [1905a, pp. 278-279] Finkelnburgia finkelnburgi. 



Orthis (Finkelnburgia) osceola Walcott [1905a, p. 279] Finkelnburgia osceola. 



Orthis (Finkelnburgia) osceola corrugata Walcott [1905a, p. 280] Finkelnburgia osceola corrugata. 



Orthis? (Orthisina?) pepina Hall [1883, PI. XXXVII, figs. 16-19] Billingsella coloradoensis. 



Orthis (Orusia) Walcott [1905a, p. 273] Orusia. 



Orthis (Orusia?) eurekensia Walcott [1905a, p. 277] Orusia? eurekensis. 



Orthis (Orusia) lenticularis Walcott [1905a, pp. 273-276] Orusia lenticularis. 



Orthis (Orusia) lenticularis atrypoides Walcott [1905a, p. 276] Orusia lenticularis ati-ypoides. 



Orthis (Orusia) lenticularis lyncioides Walcott [1905a, p. 277] Orusia lenticularis lyncioides. 



Orthis (Plectorthis) Walcott [1905a, pp. 257-259] Eoorthis. 



Orthis (Plectorthis) agreste Walcott [1906, p . 570] Eoorthis agreste. 



Orthis (Plectorthis?) atava Walcott [1905a, pp. 259-260] Eoorthis atava. 



Orthis (Plectorthis) christianise Moberg and Segerberg [1906, p. 69] Eoorthis christianise (in part only). The 



reference includes also E. daunus and 

 ^ E. tullbergi. 



Walcott [1905a, pp. 260-261] Eoorthis chriatiania. 



Orthia (Plectorthia) daunus Moberg and Segerberg [1906, p. 69] Eoorthis daunus. 



Walcott [1905a, p. 261] Do. 



Orthis 



Orthis 



Orthis 



Orthis 



Orthis 



Orthis 



Orthis 



Orthia 



Orthia 



Orthis 



Orthia 



Orthia 



Orthis 



Orthis 



Orthis 



Orthis 



Orthis 



Orthis 



Orthia 



Orthis 



Orthis 



Plectorthis) desmopleura Walcott [1905a, p. 261] Eoorthis desmopleura. 



Plectorthis) desmopleura nympha Walcott [1905a, p. 262] Eoorthis desmopleura nympha. 



Plectorthis) diablo Walcott [1905a, p. 262] Eoorthis? diablo. 



Plectorthis) doris Walcott []90oa, pp. 262-263] Eoorthis doris. 



Plectorthis) hastingsensis Walcott [1905a, p. 263] Eoorthis hastingsensis. 



Plectorthis) iddingsi Walcott [1905a, p. 264] Eoorthis iddingsi. 



Plectorthis) indianola Walcott [1905a, pp. 264-265] Eoorthis indianola. 



Plectorthis) johannensis Walcott [1905a, pp. 265-266] Eoorthis johannensis. 



Plectorthis) kayseri Walcott [1905a, p. 266] Eoorthis kayseri. 



Plectorthis) kichouensis Walcott [1906, p. 570] Eoorthis kichouensis. 



Plectorthia) linnarssoni Walcott [1905a, p. 266] Eoorthis linnarssoni. 



Plectorthis) newtonensis Walcott [1905a, p. 267] Eoorthis newtonensis. 



Plectorthis) pagoda Walcott [1905a, pp. 267-268] Eoorthis pagoda. 



Plectorthis) papias Walcott [1905a, p. 268] Eoorthis papias. 



Plectorthis) remnicha Walcott [1905a, pp. 268-269] Eoorthis remnicha. 



Plectorthis) remnicha sulcata Walcott [1905a, p. 269] Eoorthis remnicha sulcata. 



Plectorthis) remnicha texana Walcott [1905a, p. 270] Eoorthis remnicha texana. 



Plectorthis) remnicha winfieldensis Walcott [1905a, p. 270] Eoorthis remnicha winfieldensis. 



Plectorthis) retroflexa Walcott [1905a, pp. 270-271] Billingsella retroflexa. 



Plectorthis) saltensis Walcott [1905a, p. 271] Eoorthis saltensis. 



Plectorthis) tullbergi Moberg and Segerberg [1906, p. 69] Eoorthis tullbergi. 



■ Walcott [1905a, p. 271] Do. 



Orthis (Plectorthis) wichitaensis Walcott [1905a, pp. 271-272] Eoorthis wichitaensis. 



Orthis (Plectorthis) wichitaensis laeviusculus Walcott [1905a, p. 272] Eoorthis wichitaensis leeviusculus. 



Orthis (Plectorthis) wimani Moberg and Segerberg [1906, p. 70] Eoorthis wimani. 



Wdlcott [1905a, p. 272] Do. 



Orthis (Plectorthis) sp. Walcott [1905a, pp. 272-273] Eoorthis sp. undt. a and b. 



Orthis (Plectorthis) sp. undt. Walcott [1906, p. 571] Eoorthis various sp. undt. 



Orthis (Protorthis) billingsi Wysogorski [1900, p. 227] Protorthis billingsi. 



Orthisina alberta Matthew [1902c, p. 109] Nisusia alberta. 



Walcott [1889c, p. 442] Do. 



Orthisina? billingsi Matthew [1891, p. 131] Protorthis billingsi. 



Orthisina compta Tate [1892, p. 185] Nisusia compta. 



