[34] Amer. Journ. Trop. Dis. and Prevent. Med., ii, p. 256.
[35] Schaudinn (1903), Arb. a. d. Kaiserl. Gesundh., xix, p. 547.
[36] To explain this discrepancy it is stated that the border of the undulating membrane can be detached in the form of an independent flagellum. But Parisi (1910) places such quadriflagellate forms in the sub-genus Tetratrichomonas, Arch. f. Protistenk., xix, p. 232.
[37] According to Marchand, the nucleus is connected with a line, which becomes visible on addition of acetic acid, terminates at the posterior extremity, and does not correspond to the line of insertion of the undulating membrane. This formation probably is the same as the axostyle in Trichomonas batrachorum, Perty. Blochmann (1884) also mentions two longitudinal rows of granules, which commence at the same place as the nucleus and converge posteriorly.
[38] Under the term Cercomonas intestinalis, Lambl in different years has described two entirely distinct Flagellata, namely, in 1859 (“Mikr. Unters. d. Darm- Excrete,” Prag. Vierteljahrsschr. f. prakt. Hlkde., lxi, p. 51; and Lambl, A. d. Franz-Josephs-Kinderspitale in Prag, Prag, 1860, i, p. 360), a form that at the present day is termed Lamblia intestinalis; and in 1875 (in the Russian Medical Report, No. 33), a species identical with Cercomonas hominis, Dav.
[39] Davaine, C., “Sur les anim. infus. trouv. dans les selles d. malad. atteints du cholera et d’autr. malad.,” C. R. Soc. Biol., 1854, ii, p. 129.
[40] For the present the following should be regarded as synonymous: Protoryxomyces coprinarius, Cunningham (Quart. Journ. Micr. Sci. (2) 1880, xxi, p. 234), (Zeitschr. f. Biol., 1882, viii, p. 251). Monocercomonas hominis, Grassi, 1882. Cimænomonas hominis, Grassi, 1882. Trichomonas hominis, Grassi, 1888. Cercomonas coli hominis, May (Deutsches Archiv. f. klin. med., 1891, xlix, p. 51). Monocercomonas hominis, Epstein (Prag. med. Wochenschr. 1893, Nos. 38–40). Trichomonas confusa, Stiles (Zool. Anz., 1902, xxv, p. 689). Trichomonas elongata, Trichomonas elliptica, Cohnheim (Deutsche med. Wochenschr., 1903, xxix, Nos. 12–14). Trichomonas elongata, Trichomonas caudata, Trichomonas flagellata, Steinberg (Kiewer Zeitschr. f. neuere Medicin, 1862). Trichomonas pulmonalis, A. Schmidt, (Münch. med. Wochenschr., 1895, No. 51), and St. Artault (Arch. de parasit. 1898, i, p. 279).
[41] Brit. Journ. Children’s Diseases, x, p. 60.
[42] Bull. Soc. Path. Exot., vi, p. 120.
[43] Parasitology, iii, p. 210.