TRICHOMONAS INTESTINALIS 45 



tinalis, R. Lkt., is identical with Trichomonas vaginalis, Donne. 

 Leuckart's species 1 was based on the discoveries of Marchand - 

 and Zunker, 3 who state that according to all appearances, and 

 in their opinion, it is the same as Cercomonas intestinalis, 

 Lambl, 1875 (nee 1859), which they found in the faeces of 

 patients suffering from intestinal disorders. The organism is 

 described by them as being 0-01-0-015 mm. in length ; the posterior 

 extremity terminates in a point, while a row of twelve or more 

 cilia commence at the anterior end and extend over the body. 

 Leuckart states that this parasite placed by the two authors 

 with the Cercomonas, is a Trichomonas, that they mistook the 

 undulating membrane for cilia, and overlooked the flagella. Not- 

 withstanding its striking similarity 

 with Tr. vaginalis it is distinguish- 

 able from this species by the con- 

 siderably larger number of parts 

 (cilia) composing the ciliated crest 

 (undulating membrane). Lambl's 

 Cercomonas intestinalis^ (of 1875) 

 which corresponds with Cercomonas 

 hominis, Davaine 5 (1854), is re- 

 garded by Leuckart as a true CerCO- FlG - 10. Trichomonas intestinalis, 

 , ; , . , , n Lkt. (after Grass! ). 



monade (characterised by a flagellum 



and the absence of an undulating membrane) thus generically distinct 



from Trichomonas. 



The correctness of Leuckart's judgment in regard to Mar- 



Trich. vag." (C. R. Ac. so., Paris, 1868, xl., p. 1076) ; Hausmann, Die Paras, d. weibl 

 Geschlechtsorg, Berlin, 1870; Blochmann, F., "Bern. iib. einig. Flagell." (Z. /. w. Z. 

 1884, xl., p. 42) ; Kiinstler, J., " Trichom. vagin., D." (Journ. d. microgr., 1884, vi"- 

 p. 317) ; Marchand, F., " Ueb. d. York. v. Trick, im Harne eines Mannes " (C. /. B. u. P. 

 1894, xv., p. 709) ; Miura. K., " Trick vag. im frisch gelass. Urin eines Mannes " (ibid. 

 1894, xvi., p. 67) ; Marchand, F., " Bern z. d. vorsteh. Arbeit " (ibid., p. 74) ; Dock, G. 

 "Flag. Protoz. in the Freshly Passed Urine of a Man" (Med. News, 1894, Ixv. 

 p. 640) ; Dock, G., " Trichom. as a Paras, of Man " (Am. Journ. Med. Sc., 1896 

 p. i) ; Laveran, A., and F. Mesnil, " Sur la Morph. et la syst. d. Flag., d membr. ondnl." 

 (C. R. Ac. sc., Paris, 1901, cxxxiii., p. 131). 



1 Leuckart, R., Die Parasiten d. Mensch. (Lpzg. 1879-86, i., 2nd edition, p. 

 315). 



* Marchand, " Bin Fall von Infusorien im Typhusstuhl " (Virchow's Arch. /. path. 

 Anat., 1875, ixiv., p. 293). 



3 Zunker, " Ueb. d. York. d. Cercom. intestinalis - im Digestionscanal des Menschcn " 

 Deutsch. Ztschr. f. pract. Med., 1878, p. i.) 



1 Under the terra Cercomonas intestinalis, Lam,bl in different years has described 

 two entirely distinct flagellata, namely, in 1859 (Mikr. Unters. d. Darm- Excrete. Prag 

 Vierteljahrsschr. f. prakt. Hlkde., Ixi., p. 51 ; and Lambl A. d. Franz- Josephs-Kinderspitalc 

 in Prag., Prag., 1860, i., p. 360), a form that we at the present day term Lamblia intes- 

 tinalis ; and in 1875 (in the Russian Medical Report, No. 33), a species identical with 

 Cercomonas hominis, Dav. 



5 Davaine, C., " Sur les anim. in/us, trouv. dans les selles d. malad. atteints du chol.'-rn 

 et d'aiitr. malad." (C. R. soc. biol., 1854, ii., p. 129). 



