SYNONYMIC REFERENCES. 69 



Present reference, 

 nitida [Obolella], Ford [1873, p. 21.3] Acrothele nitida. 



Grabau and Shimer [1907, p. 189] Do. 



Hall and Clarke [1892c, p. 70] Do. 



Walrott [1886b, pp. 118-119] Do. 



Walcott [1891a, p. 612] Do. 



notchensis [Obolus (Westonia)], Walcott [190Sd, p. 69] Obolus (Westonia) notchensis. 



nox [Acrotreta], Walcott [1905a, p. 301] Acrotreta nox. 



nundina [Obolus], Walcott [1905a, p. 326] Obolus nundina. 



nundina [Syntrophia], Walcott [1905a, p. 292] Syntrophia nundina. 



nunnebergensis [Protortbis?], Walcott [190.5a, p. 284] Protorthis? hunnebergensis. 



nympha [Orthis (Plectorthis) desmopleura], Walcott [190.5a, p. 262] Eoorthis desmopleura nympha. 



nyssa [Micromitra (Iphidella)], Walcott [190Sd, p. 57] Micromitra (Iphidella) nyssa. 



O. 



Obolella Billings [1861b, p. 7] Obolella. 



Billings [1861c, p. 946] Do. 



Billings [1862c, pp. 420-421] Do. 



Billings [1862e, p. 218] Do. 



Billings [1872a, pp. 217-218] Do. 



Billings [1872c, pp. 355-357] Do. 



Billings [1876, pp. 176-178] Do. 



Dall[1870, pp. 1.54 and 163] Do. 



Davidson [1866, p. 60] Do. 



Davidson [1868, pp. 308-309] Do. 



Davidson [1871, pp. 338-339] Do. 



Ford [1881, pp. 131-134] Do. 



Grabau and Shimer [1907, p. 188] Do. 



Hall [1863, p. 131] Do. 



Hall [1867, p. 108] Do. 



Hall and Clarke [1892a, pp. 240-241] Obolella (in. part) and Dicellomus (in part). 



Hall and Clarke [1892b, pp. 556-557] Do. 



Hall and Clarke [1892c, pp. 66-73 and 164-165] Obolella (in part), Dicellomus (in part), 



Bicia (in part), Obolus (in part), etc. 



Matthew [1892, pp. 39^0] Obolella. 



Meek and Hayden [1865, pp. 3^] Do. 



Mickwitz [1896, pp. 116, 121, and 123-126] Do. 



Oehlert [1887, p. 1262] Do. 



Obolella? Walcott [1884b, pp. 67-68] Do. 



Obolella Walcott [1886b, pp. 109-112] Do. 



Walcott [190Se, PI. XI, and pp. 142 and 145] Do. 



Zittel[1880, p. 664] Do. 



Obolella? ambigua Walcott [1884b, pp. 67-68] Elkania amblgua. 



Obolella asiatica Walcott [1905a, p. 297] Obolella asiatica. 



Obolella atlantica Burr [1900, p. 47] Obolella atlantica. 



Gorham[1905, PL I, figs. 2a-c] Do. 



Grabau [1900, pp. 620-621] Do. 



Grabau and Shimer [1907, p. 188] Do. 



Matthew [1899d, p. 70] Do. 



Walcott [1890b, p. 36] Do. 



Walcott [1891a, p. 611] Do. 



Obolella cf. atlantica Delgado [1904, p. 364] Obolella? sp. undt. 



Obolella belti Davidson [1868, pp. 310-311] Acrotreta belti. 



Davidson [1871, pp. 340-341] Do. 



Obolella cselata Billings [1872a, p. 218] Botsfordia caelata. 



Obolella chromatica Billings [1861b, pp. 7-8] Obolella chromatica. 



Billings [1861c, p. 947] J Do. 



Billings [1862e, p. 219] Do. 



Billings [1863, p. 284] Do. 



Billings [1876, pp. 176-178] Do. 



Ford [1881, p. 133] Do. 



Hall [1863, p. 132] Do. 



Hall [1867, p. 110] Do. 



Hall and Clarke [1892c, p. 67] Do. 



von Toll [1899, p. 27] (?) (See p. 592.) 



