HiEMATOZOA OF VERTEBRATES. 
91 
Supplementary Note on Halteridium. 
Quite recently it has been announced by Dr. Fritz Schaudinn 
that Halteridium is to be regarded as the sexual phase in the life- 
history of a Trypanosoma. This is a most surprising discovery, 
and cannot fail to lead to further unexpected developments. 
[Schaudinn, F. Generations-und Wirtswechsel bei Trypanosoma 
und Spirochaete. Arbeiten aus dem Kaiserl. Gesundheitsamt, 
Berlin. Bd. XX., Heft 3, 1904. Abstract by H, Kossel in Archiv 
fur Schiffs-und Tropen-Hygiene, Bd. VIII., 1904, p. 173.] 
EXPLANATION OF THE PLATE 
Illustrating the Article on the Hcematozoa of Ceylon, by Drs. Castellani and Willey, 
Fig. 1 .—Filaria mansoni ?. Drawn after preservation, x 4. 
Fig. 2.—-Same. Tail end with indication of vent. 4D cam. luc. 
Fig. 3.—Same. Head end. x 30. 
Fig. 4.—Same. Outline sketch of anterior end showing the 
discharge of the eggs. 
Fig. 5.—Same. Linear embryo discharged into the preserving 
uid. 4 D cam. luc. 
Fig. 6.—-Same. Blood-filaria from a stained preparation. Oc. 
3. Obj. r J 2 oil imm. cam. luc. 
Fig. 7.— Halteridium danilewskyi . Double infection of a blood 
corpuscle. The nucleus of the corpuscle is drawn in outline only 
in this and the following figures. The black spots in the parasites 
are pigment granules. 
Fig. 8.—Same. The parasite shows an interruption at the centre, 
and its ends are bifurcated with a refringent granule in each 
process. 
Fig. 9.-—Same. Male parasite becoming short and round. 
Fig. 10 .—Hcemocystidium simondi . Young male trophozoite 
in corpuscle, staining pale blue, with zone of pigment spots. 
Compensating oc. 4. obj. T ] g cam. luc. 
Fig. 11.—Same. Young female trophozoite, staining dark blue, 
with pigment spots and one vacuole; shape amoeboid. Same 
magnification as fig. 10. 
Fig. 12.—Same. Male (pale blue) trophozoite nearly filling a 
blood corpuscle ; with pigment spots. Freehand sketch. Dimen¬ 
sions of parasite 13 microns by 10 microns. 
Fig. 13.—Same. Male trophozoite rounded. 
Fig. 14.—Same. Female (dark blue) trophozoite with pigment 
and several vacuoles. 
Fig. 15.™Same. Female trophozoite rounded. 
