74 CAMBRIAN BRACHIOPODA. 



Present reference. 



Obolus pandemia Walcott [1898b, p. 388] Obolus pandemia. 



Obolus panderi Mickwitz [1896, pp. 149-151] Obolus panderi. 



Obolus parvus Walcott [1908d, pp . 61-62] Obolus parvus. 



Obolus pectenoides WTiitfield [1875, p. 103] Dicellomus pectenoides. 



Obolus? pectenoides ^^^litfield [1880, pp. 338-339] Dicellomus pectenoides. 



Obolus pheres Walcott [1905a, p. 328] Obolus pheres. 



Obolus pristinus Matthew [1895a, pp. 121-122] Trematobolus pristinus. 



Matthew [1902c, p. 96] Do. 



Obolus? pulcher Hall and Clarke [1892c, pp. 81 and 183] Botsfordia pulchra. 



Obolus pulcher Matthew [1889, p. 306] Do. 



Matthew [1890, pp. 151-155] Do. 



Obolus quenstedti Hall and Clarke [1892a, p. 243] Obolus apoUinis quenstedti. 



Hall and Clarke [1892b, p. 559] Do. 



Hall and Clarke [1892c, p, 339] Do. 



Matthew [1903, p. 120] Do. 



Mickwitz [1892, p. 62] Do. 



Walcott [1898b, p. 385] Do. 



Obolus ref ulgens Matthew [1892 , pp . 44^5] Obolus ref ulgens. 



Matthew [1902c, p. 96] Do. 



Obolus? refulgens Mickwitz [1896, pp. 23-24] Do. 



Obolus rhea Walcott [1898b, pp. 387-388] Obolus rhea. 



Obolus? rokitzanensis Barrande [1879b, PI. CXXVI] Obolus rokitzanensis. 



Obolus salteri Brogger [1882, pp. 44-45] Obolus (Broggeria) salteri. 



Obolus? salteri Dall [1870, p. 163] Do. 



Mickwitz [1896, p. 19] Do. 



Obolus schmidti Mickwitz [1896, pp. 152-1.54] -. '.Obolus schmidti. 



Obolus shensiensis Walcott [1905a, p. 327] Obolus shansiensis. 



Obolus siluricus Eichwald [1843a, pp. 7-8] Obolus (Mickwitzella) siluricus. 



Eichwald [1859, PI. XXXVII, figs. 6 and 7a-b] Do. 



Eichwald [I860, pp. 927-928] Do. 



Mickwitz [1892, p. 60] Do. 



Schmidt [1861, p. 218] Do. 



Schmidt [1881, p. 17] Do. 



Siemiradzki [1886, p. 672] Obolus (Acritis) antiquissimus. 



Obolus smithi Walcott [1908d, pp. 62-63, PL VII, fig. 9a] Obolus smith!. 



Walcott [1908d, PL VII, fig. 9] Micromitra (Paterina) major. 



Obolus tetonensis Walcott [1901, p. 684] Obolus tetonensis. 



Walcott [1905a, p. 327] Do. 



Obolus tetonensis leda Walcott [1908d, p. 63] Obolus tetonensis leda. 



Obolus tetonensis ninus Walcott [1905a, p. 328] Obolus tetonensis ninus. 



Obolus torrentis Matthew [1902c, p. 94] Obolus? torrentis. 



Matthew [1903, p. 76] Do. 



Obolus triangularis Mickwitz [1896, pp. 145-147] Obolus triangularis. 



Moberg and Segerberg [1906, p. 65] Do. 



Westergard [1909, p. 56] Do. 



Obolus triangularis inornatus Mickwitz [1896, pp. 148-149] Do. 



Obolus triparilis Matthew [1902c, p. 94] Lingulella triparilis. 



Obolus volborthi Mickwitz [1896, pp. 155-157]. Obolus volborthi. 



Obolus wortheni Walcott [1908d, pp. 63-64] Obolus wortheni. 



Obolus? zoppi Walcott [1901, pp. 684-685] Obolus? zoppi. 



Obolus sp. Kayser [1876, pp. 9-10] Obolus? sp. undt. 



Obolus? sp. Kjerulf [1873, p. 83, figs. 10 and 11] Obolella mobergi?. 



Obolus (?) sp. indet. Linnarsson [1876, p. 16] Obolus sp. undt. g. 



Obolus (Acritis) Mickwitz [1896, pp. 205-206] Obolus (Acritis). 



Walcott [1901, p. 683] Do. 



Walcott [1908e, PL XI, and pp. 142 and 144] Do. 



Obolus (Acritis) antiquissimus Mickwitz [1896, pp. 206-213] Obolus (Acritis) antiquissimus. 



Obolus (Acritis) antiquissimus ventrosus Mickwitz [1896, pp. 213-214]. . . . Do. 



Obolus (Acritis?) rugatus Walcott [1901, p. 694] Obolus (Acritis?) rugatus. 



Obolus (Botsfordia) Matthew [1891, p. 148] _. Botsfordia. 



Matthew [1892, p. 63] '. Do. 



Obolus (Botsfordia) pulcher Matthew [1891 , p. 148] Botsfordia pulchra. 



Matthew [1892," pp. 62-63] Do. 



