84 CAMBRIAN BRACHIOPODA. 



Present reference. 



Plectorthis indianola Grabau and Shimer [1907, pp. 251-252] Eoorthis indianola. 



(Plectorthis) indianola [Orthis], Walcott [1905a, pp. 264-265] Do. 



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



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



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



(Plectorthis) linnarssoni [Orthis], Walcott [1905a, p. 266] Eoorthis linnarssoni. 



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



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



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



Plectorthis remnicha Grabau and Shimer [1907, p. 252] .Eoorthis remnicha. 



(Plectorthis) remnicha [Orthis], Walcott [1905a, pp. 268-269] Do. 



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



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



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



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



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



(Plectorthis) tullbergi [Orthis], Mobefg and Segerberg [1906, p. 69] Eoorthis tuUbergi. 



Walcott [1905a, p. 271] Do. 



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



(Plectorthis) wichitaensis Iseviusculus [Orthis], Walcott [1905a, p. 272] Eoorthis wiehitaensis Iseviusculue. 



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



Walcott [1905a, p. 272] Do. 



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



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



plicatella [Billingsella], Walcott [1905a, pp! 240-241] Billingsella plicatella. 



pogonipensis [Obolus (Lingulella)], Walcott [1898b, pp. 411^12] Lingulella pogonipensis. 



polita [Aulonotreta], Kutorga [1848, pp. 279-282] Obolus apollinis (in part), 0. apollinis 



ingricus (in part), and O. (Mickwitzella) 

 eiluricus (in part). 



polita [Dicellomus], Hall [1873, p. 246] Dicellomus politus. 



polita [Lingula], Hall [1861, p. 24] Do. 



polita [Lingula?], Hall [1862, pp. 21 and 435] : Do. 



polita [Lingula], WTiitfield [1862, p. 136]. : Do. 



polita [Obolella], Billings [1862c, p. 421] Do. 



polita [Obolella?], Hall [1863, pp. 133-134] Do. 



Hall [1867, pp. 112-113] Do. 



polita [Obolella], Hall and Clarke [1892c, pp. 72 and 73] Do. 



Walcott [1886b, p. Ill] ' Do. 



Whitfield [1880, pp. 339-340] Do. 



politus [Dicellomus], Grabau and Shimer [1907, pp. 189-190] Do. 



Walcott [1899, pp. 443 and 446] Do. 



Walcott [1905a, pp. 313 and 316-318] Do. 



Poljrtoechia? montanensis Walcott [1905a, pp. 295-296] Clarkella? montanensis. 



prsecisus [Obolus (Schmidtia) celatus], Mickwitz [1896, pp. 166-167] Obolus (Schmidtia) celatus. 



pretiosa [Acrothele], Walcott [1898b, p. 402]. Acrothele pretiosa. 



pretiosa [Billingsia], Ford [1886a, p. 467] Do. 



pretiosa [Elkania], Ford [1886b, p. 325] Do. 



pretiosa [Linnarssonia], Grabau and Shimer [1907, p. 200] Either Acrotreta sagittalis or Acrothele 



pretiosa. (See p. 652.) 



Hall and Clarke [1892c, p. 70] Acrotreta sagittalis. 



Schuchert [1897, p. 262] Acrotreta sagittalis (in part) and Acro- 

 thele pretiosa (in part). 



Walcott [1901, p. 673] , .Acrothele pretiosa. 



pretiosa [Linnarssonia cf .], Hall [1890, p. 55] Acrotreta sagittaKs. 



pretiosa [Mickwitzia], Walcott [1908d, pp. 54-55] Mick-s^atzia pretiosa. 



pretiosa [Obolella], Billings [1862d, pp. 68-69] Acrothele pretiosa. 



Billings [1863, p. 230] Do. 



Chapman [1863, p. 191] Do. 



Chapman [1864, p. 163] Do. 



pretiosa [Obolella?], Walcott [1886b, p. Ill] Do. 



pretiosa [Obolella (Linnarssonia)], Dawson [1890, pp. 53-54] Acrotreta sagittalis. 



prima [Acrothele matthewi], Hall and Clarke [1892a, PI. Ill, fig. 27] Acrothele prima. 



Hall and Clarke [1892c, PL III, fig. 25] Do. 



