442 Wisconsin Academy of Sciences , Arts, and Letters . 
155. Alexenko, 1891, p. 61. Beyerinck, 1891, p. 279. Ianouch- 
kievitch, 1891, p. 289. Bennett, 1892, p. 5. Turner, 1892, p. 161. 
Weiss, 1892, p. 36. Franze, 1893, p. 286. Schroder, 1893, p. 72. 
Stokes, 1893, p. 52. Alexenko, 1894, p. 72. Borge, 1894, p. 9. 
Alexenko, 1895, p. 93. Schroder, 1897A, p. 372. Schroder, 1897B, 
p. 487. Wille, 1897, p.26. Forti, 1898, p.118. Nitardy, 1898, p. 104. 
Zacharias, 1898, p. 93. Forti, 1899, p. 89. Iwanoff, 1899, p. 379. 
Marquand, 1901, p. 321. Balsamo, 1900, p. 266. Neuweiler, 
1901, p. 45; PI. Ill, Figs. 6-8. Larder, 1902, p. 59. Schmidle, 
1902, p. 242. Volk, 1903, p. 103. Zacharias, 1903B, pp. 254, 262. 
Comere, 1904, p. 62. Dorogoslaisky, 1904, p. 224. Friih und 
Schroder, 1904, p. 364. Marquand, 1904, p. 269. Nitardy, 1904, 
p. 318. Schmidle, 1904, p. 30. Stadier, 1905, p. 236. Suhr, 
1905, p. 252. Petkoff, 1906A, p. 359. Brown, 1908, p. 247. 
Quelle, 1908, p. 43. Andrews, 1909, p. 379. Ghodat, 1909, p. 
101; PI. VII, Fig. F; PL XIII, Fig. C. Honigmann, 1909, p. 54. 
Smith, 1914A, p. 292; PI. XVI, Figs. 24-42. 
S. bijugatus. Klitzing, 1833, p. 607. de Brebisson, 1839, p. 271. 
Lagerheim, 1883, pp. 60, 65. Wille, 1884, pp. 10, 30, 45. Hansgirg, 
1886, p. 114; Fig. 61. Hansgirg, 1889, p. 132. de Toni, 1889B, p. 
563. llansgirg, 1890A, p. 111. Gutwinski, 1891, p. 302. Hansgirg, 
1891, p. 317. Lemmermann, 1891, p. 148. W. West, 1891B, p. 
421. Hansgirg, 1892B, p. 119. W. West, 1892A, p. 193. Lem¬ 
mermann, 1893, p. 523. Mobius, 1894, p. 330. Schmidle, 1893A, 
p. 13. Schmidle, 1894, p. 43. Borge, 1895, p. 6. Lemmermann. 
1895A, p. 41. West and West, 1895, p. 82. Boergesen, 1896, p. 36. 
Borge, 1896, p. 7. Lemmermann, 1896, p. 108. Zacharias, 1896, 
p. 76. Bohlin, 1897, p. 22. Farlow in Trelease, 1897, p. 196. 
Lemmermann, 1897, p. 108. Schroder, 1897C, p. 45. Strohmeyer, 
1897, p. 6. West and West, 1897B, p. 500. Lemmermann, 1898A, 
p. 191. Mez, 1898, p. 149. Schroder, 1898," p. 23. Boergesen, 
1899A, p. 135. Borge, 1899, p. 7. Garbini, 1899A, p. 15. Lem¬ 
mermann, 1899, p. 112. Levander, 1899, pp. 49, 54, 63, 70, 80, 90, 
93,100. Marsson, 1899, p. 102. G. S. West, 1899, p. 220. Chodat, 
1900, p. 3. Filarsky, 1900, p. 145. Lemmermann, 1900A, p. 68. 
Levander, 1900, p. 7. Schmidle, 1900C, p. (141). Schorler, 1900, 
p. 5. Boergesen, 1901 A, p. 240. Borge, 1901B, p. 13. Dalla Torre und 
von Sarnthein, 1901, p. 34. Fanning, 1901, p. 617; PL XLV, Fig. 4. 
Marsson, 1901 A, pp. 96, 101. Marsson, 1901B, p. 96. West and 
West, 1901A, p. 196. West and West, 1901B, p. 119. Wide, 1901, 
p. 11. Blumentritt, 1902, p. 86. Bohlin, 1902, p. 43. Gutwinski, 
1902, p. 576. Riddle, 1902, p. 317. West and West, 1902, p. 181. 
West and West, 1902B, p. 63. Forti, 1902, p. 60. Boergesen and 
Ostenfeld, 1903, p. 615. Hansgirg, 1903, p. 1. Pascher, 1903, p. 
175. Snow, 1903, p. 391. W. West, 1903, p. 100. Heering und 
Homfeld, 1904, p. 84. Lemmermann, 1904A, pp. 39, 71, 92, 158. 
G. S. West,. 1904B, p. 220; Fig. 92C. West and West, 1904, p. 
531. Hansgirg, 1905, p. 457. Huber, 1905, p. 57. Lemmermann, 
1905B, p. 160. Lemmermann, 1905C, pp. 167, 168. Riddle, 
