4.02 ALDO CASTELLANI AND ARTHUR WILLEY. 
EXPLANATION OF PLATE 24. 
Fic. 1.—Non-pigmented parasite (“ pseudovermicule”’) in the blood of a 
fever case from the Police Hospital, Colombo [malarial parasites absent ; 
vidal reaction negative]. April 24th, 1905. 
Fic. 2.—Another parasite of the same kind; the two dark spots are 
chromatoid granules. In this case a few ring-forms of tropical malaria were 
observed, but no crescents. Feb. 17th, 1905. 
Fic. 3.—A third example of the same parasite. Stained by Jenner’s 
method, dark blue near the terminal vacuoles, paler blue in the centre. 
March 16th, 1905. 
Fie, 4.—Analogous “pseudovermicules” in the blood of a common 
babbler, Crateropus striatus. Sometimes the free parasite appears to be 
surrounded by aclear halo. Two blood-corpuscles are shown with Halteri- 
dium. July 2lst, 1904. 
Fic. 5.—* Pseudovermicules” in the blood of the Indian crow, Corvus 
splendens. Colombo, Aug. 9th, 1904. 
Fic.6.—Hemocystidium simondi, Castellani aud Willey, in the blood 
of Hemidactylus leschenaulti. 
Fie. 7.—Hemogregarina nicorie, from Nicoria trijuga; one of 
the corpuscles shows a double infection. 
Fic. 8.—Hemogregarina mirabilis, Castellani and Willey, from 
Tropidonotus piscator. (a) Normal corpuscle; (4) the pale blue mono- 
zoite inside its red sheath; (c) monozoite commencing to issue from the 
sheath (cytocyst) and corpuscle; (¢) monozoite still further emergent, and in 
this case taking a reddish tinge as though it were coated with a thin film of 
mucus or residual protoplasm; (e) monozoite nearly free; (7) monozoite free ; 
(g) corpuscle containing an empty cytocyst from which the monozoite has been 
discharged. 
Stained by Leishmann’s modification of Romanowsky’s method. 
Fig. 9.—Trypanosoma saccobranchi n. sp. from Saccobranchus 
fossilis. 
Figs. 10 and 11.—Two embryos of Filaria tuberosa from the blood of 
Mabuia carinata. ‘The dried blood-film was fixed in absolute alcohol and 
stained with haematoxylin and eosin. The body of the organism is seen to be 
contracted within its cuticular sheath. 
Fic. 12.—Embryo of Filaria flavescens n. sp., from the blood of 
Calotes versicolor. 
Fre. 13.—Embryo of Filaria scopsiana n.sp., from the blood of Scops 
bakkameena var. malabarica (Colombo). 
