Smith—Monograph of Scenedesmus. 
443 
1905, p. 268. Trotter, 1905, p. 45; Fig. 18. Volk, 1905, p. 64. 
West and West, 1905, p. 30. Hardy, 1906, p. 38. Pascher, 1906, 
p. 168. Ruttner, 1906, p. 10. Schorler, Thallwitz, und Schiller, 
1906, p. 247. West and West, 1906A, p. 489. Buchanan, 1907, 
p. 81. Huber, 1907, p. 455. Larsen, 1907A, p. 358. Lauterborn, 
1907, p. 123. Migula, 1907, p. 657; PL XXXII, Fig. 32; PI. 
XXXV K, Fig. 10. Lemmermann, 1907B, p.. 412. Selk, 1907, 
pp. 5, 57, 64, 73, 94, 98, 103, 112, 115. Teodoresco, 1907, p. 129. 
G. S. West, 1907, p. 138. West and West, 1907, p. 229. Adams, 
1908, p. 35. Bernard, 1908, p. 183; PI. XIV, Figs. 423-424. 
Huber, 1908, p. 313. Kolkowitz und Marsson, 1908, p. 514. 
Lemmermann, 1908A, p. 167.’ Marsson, 1908B, pp. 95, 120. 
Schneider, 1908, p. 46. Adams, 1909, p. 186. Bernard, 1909, p. 
77; PL VI, Figs. 162-163. Borge, 1909, p. 16. Eyferth, 1909, p. 
116. Gutwinski, 1909, p. 434. Honigmann, 1909, p. 54. G. S. 
West, 1909A, p. 16, 29. West and West, 1909A, p. 140. West and 
West, 1909B, p. 184. Ostenfeld, 1909, p. 174. Gugliemetti, 1910, 
p. 31. Kofoid, 1910, p. 31. Bachmann, 1911, p. 191. Comere, 
1911, p. 51. Marsson, 1911, pp. 283, 285, 286. Conrad et Kuf- 
ferath, 1912, p. 321. Griffith, 1912, p. 11. Brunnthaler, 1913, 
pp. 169, 171. Hardy, 1913, p. 93. Migula (no date) p. 37; PL 
IV, Fig. 6. 
S. trijugatus. Kiitzing, 1833, p. 607; Fig. 97. de Brebisson, 
1839, p. 271. Balsamo, 1900, p. 267. 
S. Leibleinii. Kiitzing, 1833, p. 607; Fig. 98. Meneghini, 1840, 
p. 207. Balsamo, 1900, p. 266. 
S. odaltemus. Kiitzing, 1833, p. 609; Fig. 95. Balsamo, 1900. 
p. 266. 
5. quadralternus. Kiitzing, 1833, p. 608; Fig. 94. de Brebisson, 
1839, p. 271. Balsamo, 1900, p. 266. 
Scenodesmus obtusus. Ehrenberg, 1834, p. 310. Kiitzing, 1845, 
p. 139. Kiitzing, 1849, p. 185. Nageli, 1849, p. 91: PL V, Figs. 
A-l-a to A-l-m. Rabenhorst, 1850’, p. 517. de Brebisson, 1856, 
p. 160. Archer, 1861, p. 753: PL I, Figs. 37-39. Kirchner, 1891, 
p. 18. Conn and Webster, 1908, p. 35; PL VI, Fig. 38. 
Scenodesmus quadricauda var. ecornis. Ehrenberg, 1834, p. 311. 
Arthrodesmus quadricaudatus ecornis. Ehrenberg, 1836. 
S. quadrialternans var. odalternus. de Brebisson, 1839, p. 271. 
S. quadrijugatus. de Brebisson, 1839, p. 271. Bailey, 1855, p. 
12 . 
S. quadrijugatus var. minor, de Brebisson in Meneghini, 1840, 
p. 207. 
S', quadr icaudatus var. ecornis. Rail's, 1845, p. 402; Pl. XII, Fig. 
4C. Hassall, 1845, p. 392. Ralfs, 1846, p. 159; PL XV, Fig. 4G. 
Snow, 1903, p. 391. 
S. quadricauda var. ecornis. Ralfs, 1848, p. 190; PL XXXI, 
Figs. 12H-12I. Schaarschmidt, 1884, p. 249. Parfitt, 1886, p. 
392. Nordstedt, 1888, p. 19. Balsamo, 1900, p. 266. Dalla Torre 
und von Sarnthein, 1901, p. 35. Petkoff, 1906A, p. 358. 
