SYNONYMIC KEFERENCES. 91 



Present reference. 



simplex [Wimanella], Walcott [1908d, p. 101] ' Wimanella simplex. 



since [Obolus (Lingulella)], Walcott [189Sb, pp. 416^17] Obolus sinoe. 



Siphonotreta Davidson [1853, pp. 131-133] Siphonotreta. 



Davidson [1866, p. 75] Do. 



Davidson [1877, pp. 13-16] Do. 



Davidson [1883, pp. 217-219] Do. 



Eichwald [1860, p. 915] Do. 



Hall and Clarke [1892a, pp. 252-253] Do. 



Hall and Clarke [1892b, pp. 568-.569] Do. 



Hall and Clarke [1892c, pp. 110-113] ; Do. 



Jeremejew [1856, pp. 73 and 80] Helmersenia. 



Kutorga [1848, pp. 261-263] Siphonotreta. 



Morris [1849, pp. 315-320] Do. 



Morris [1850, pp. 57-58] Do. 



Oehlert [1887, p. 1265] Do. 



Quenstedt [1871, pp. 673-674] Do. 



Seebach [1865, p. 341] Do. 



de Verneuil [1845, p. 286] '. Do. 



Walcott [1908e, PL XI, and pp. 142 and 146] ..-. Do. 



Winchell and Schuchert [1895, p. 358] Do. 



Zittel [1880, pp. 665-666] Do. 



Siphonotreta ? dubia Walcott [new] Siphonotreta ? dubia. 



Siphonotreta ladogensis Jeremejew [1856, pp. 73 and SO] Helmersenia ladogensis. 



Siphonotreta unguiculata Davidson [1853, PL IX, figs. 261-265, 269, and 



270] Siphonotreta unguiculata. 



Davidson [1877, pp. 14 and 1.5] Do. 



Eichwald [1860, pp. 915-916] Do. 



Gagel [1890, p. 23] Do. 



Hall and Clarke [1892a, p. 253] Do. 



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



Kutorga [1848, pp. 264 and 284] Do. 



Quenstedt [1871, p. 674] Do. 



Quenstedt [1885, p. 755] Do. 



Schmidt [1861, p. 218] Do. 



de Verneuil [1845, pp. 286-287] Do. 



Walcott [1884b, p. 16] Do. 



Zittel [1880, p. 666] Do. 



Siphonotreta unguiculata var. a Kutorga [1848, p. 284] Do. 



Siphonotreta unguiculata var. /3 Kutorga [1848, pp. 264-265] Do. 



Siphonotreta unguiculata var. ;- elongata Kutorga [1848, p. 265] Do. 



Siphonotreta verrucosa Davidson [1853, PL IX, figs. 267 and 268] Siphonotreta verrucosa. 



Eichwald [1860, pp. 916-917] Do. 



Gagel [1890, p. 22] Do. 



Kutorga [1848, pp. 266-267] -• Do. 



Morris [1849, PL VII, figs. 2a-d] Do. 



Quenstedt [1871, p. 674] Do. 



Quenstedt [1885, p. 755] Do. 



Schmidt [1861, p. 218] Do. 



de Verneuil [1845, p. 287] Do. 



rsipo [Acrotreta], Matthew [1902b, pp. 406-^07] Acrotreta bisecta. 



Matthew [1903, pp. 185-186] Do. 



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



Walcott [1908d, PL VII, fig. 9] Micromiti-a (Paterina) major. 



socialis [Acrotreta], Gronwall [1902, p. 39] Either Acrotreta schmalenseei or A. socialis. 



(Seep. 712.) 



Linnarsson [1876, pp. 16-18] Acrotreta schmalenseei. 



Linnarsson [1877, p. 374] Either Acrotreta schmalenseei or A. socialis. 



(See p. 712.) 



von Seebach [1865, p. 341] Acrotreta socialis. 



Walcott [1902, pp. 599-600] Do. 



Wallerius [1895, p. 66] Acrotreta schmalenseei. 



■socialis [Acrotreta cf.], Brogger [1882, pp. 46-47, PL X, figs. 2, 2a-b] Acrotreta carinata. 



Brogger [1882, pp. 46—47, PL X, figs. 3 and 4] Not referred in this monograph. 



Matley [1902, pp. 144-145] Acrotreta sabriuEe. 



